ventilation systems
PRODUCTS CATALOGUE MCI(cover)final.indd 1
10/22/2013 5:13:09 PM
Contents A.
MCC Company Profile
B.
Mission & Vision Statement
C.
Rectangular Ducts & Fittings
D.
Rectangular Ducts Technical Guidelines
E.
Spiral Ducts & Round Fittings
F.
Fire Rated Ducts
G.
Aluminum Pre Insulated Ducts
H. Technical Data & Useful Notes
Our management and technical team has a vast experience in the field of ductwork manufacturing and HVAC contracting. Our Riyadh factory produces the following products in accordance with the relevant international industry standards such as ASHRAE, SMACNA & DW: • • • •
Rectangular Ductwork and fittings. Plenum boxes for Air outlets. Spiral Ductwork and Round fittings. Rectangular Aluminum pre-insulated duct.
MCC offers a full range of additional & special products such as Ductwork accessories (Fire Dampers, Fire Smoke Dampers, Access Doors, Volume Dampers, VAV Boxes, Silencers and Air Devices), Fire Rated Duct.
Yanbu National Petrochemical Co. (YANSAB) - Yanbu
ventilation systems
ventilation systems
COMPANY PROFILE
MCC Duct factory is the manufacturing arm of Modern Contracting Co., located in Riyadh with over twelve years of experience as HVAC ductwork manufacturer and HVAC contractor.
Our mission is to provide our community with an established dependable company to work with for their HVAC comfort needs. We pledge to help our employees to excell and succeed in delivering a positive experience for the team member and the customer. Success is the result of clear, concise, positive and cooperative thinking of all team members for the common goal of excellence.
Vision Statement Our vision is to become the premier supplier of air distribution products in the Kingdom of Saudi Arabia and the GCC countries. We are committed to service our community with excellence as a team to our highest potential, personally and professionally for the greatest integrity and concern of all.
ventilation systems
ventilation systems
Mission and Vision Statement
Mission Statement
Rectangular ducts and fittings
ventilation systems
ventilation systems
Technical Information About the System
Design
We present you a production range of rectangular ducts and fittings The catalogue includes rectangular ducts and fittings with dimensions as required by the standard: SMACNA (metal and flexible) or DW144 and all standards referenced therein. They are used in low and medium pressure building ventilation and air-conditioning systems. Stainless steel or aluminum ducts and fittings can be fabricated on request where better protection against corrosion is needed. We also offer unusual fittings, not included in the catalogue, based on your drawing.
The rectangular ducts and fittings are designed with slip-fit connections, either welded or button punched. The rectangular components can be made of other materials such as stainless steel, aluminum or black steel sheet.
Dimensions The normal dimension, which is conventionally used to identify and calculates straight ducts and fittings, corresponds to the internal dimensions of sides W and H, where W stands for the width and H for the height. Dimension L represents the useful length of the straight duct, i.e. a dimension that affects the total length of the duct system. Dimension L represents the useful length of the fitting, i.e. a dimension that affects the total length of the duct system. Dimensions of rectangular ducts and fittings are treated as standard from 130 mm to 2500 mm size of any side. Ducts and fittings with a smaller or larger size in relation to the stated objects to a special order. Imposition of the entire surface, and the term of the contract shall be determined on an individual basis.
ventilation systems
ventilation systems
Duct
RSD Dimensions W
H
L
L
H
Description On its ends the rectangular ducts has plain edges for slip connection or mounting frames with sheet metal joining profiles and is stiffened with transverse sheet corrugation. In addition, depending on its size, it is stiffened with galvanised rods. For the purpose of production, transport and installation standardization, the ducts are fabricated in maximum standard length of 1,200 mm.
Example Identification product code
RSD
F
GI
- 500 X 300 - 1200
W
The duct can be supplied as follows: 1. Single wall metal duct 2. Internally lined duct with plain facing or perforated sheet on top of lining complete with insulation guard and insulation pins. 3. Double wall factory insulated duct with inner and outer sheet metal and insulation.
type F S GI SS BS ALU W H L
F S GI SS BS ALU W H L
Flanged connection Slip connection Galvanised material Stainless Steel Black Steel Aluminum width height length
ventilation systems
ventilation systems
Bend
RMBF H
H
H
W
H
Description On its ends the 90° bend has either plain end for slip connection or mounting frames with sheet metal joining profiles. Bends are advisable for systems with low flow rates/ pressures and smaller side lengths. A bend is usually used to divert the direction of the duct system by 90 degrees without changing the cross-section of the duct
Example Identification product code
RMBF
F
GI
- 500 X 300 - 120
type F S GI SS BS ALU W H r
F S GI SS ALU BS W H r
Flanged Connection Slip Connection Galvanised Material Stainless Steel Material Aluminum Material Black steel material width height radius
ventilation systems
ventilation systems
W
Radiused Bend
RBF
Dimensions W
H
H
H
Description
Description
On its ends the standard 90° bend has either plain ends for slip connection or mounting frames with sheet metal joining profiles. Bends are advisable for systems with high flow rates/ pressures and greater side lengths.
A bend is usually used to divert the direction of the duct system by an angle while maintaining the cross-section of the duct.
Example Identification product code
RBF
F
GI
- 500 X 300 -
30
type F S GI SS BS ALU W H r
F S GI SS ALU BS W H r
Flanged Connection Slip Connection Galvanised Material Stainless Steel Material Aluminum Material Black Steel Material width height radius
ventilation systems
ventilation systems
Rectangular-to-Round Transition
RRTF
Dimension d
d
L
H
W
W
H
Description The Transition is used to change the cross section of the duct system from rectangular to round. The fitting enables to design a ventilation system with all dimensions freely changeable and any offset in both directions.
Transitions can be fabricated with both centric and eccentric construction. Transitions length L is determined by the drawing and site conditions.
Example Identification product code
RRTF
F
GI
- 500 X 300 200
type F S GI SS BS ALU W H d
F S GI SS ALU BS W H d
Flanged Connection Slip Connection Galvanised material Stainless steel material Aluminum material Black Steel material width height diameter
ventilation systems
ventilation systems
Reducer
RCRF Dimension c
d
L
W H
H
d
Description
c
The reducer is used for joining two rectangular ducts with different dimensions. On its ends it has either plain end for slip connection or mounting frames with sheet metal joining profiles. It enables to design a ventilation system by reducing its cross section concentrically. The axes of both dimensions match each other.
The reducer can be fabricated in eccentric construction RERF.
Example Identification product code
RCRF
F
GI
- 500 X 300 X 400 - 200
type F S GI SS BS ALU W H c d
F S GI SS ALU BS W H c d
Flanged Connection Slip Connection Galvanized material Stainless steel material Aluminum material Black Steel material inlet width inlet height Outlet width Outlet height
ventilation systems
ventilation systems
Offset
ROF Dimension H
W
L
H
Description The variable cross-section is used to bypass any obstructions in the ventilation system while changing the height of the duct, e.g. at duct crossings. On its ends it has either plain end for slip connection or mounting frames with sheet metal joining profiles. To ensure proper flow, it is recommended to select appropriate dimensions for length L and deviation e.
Example Identification product code
ROF
F
GI
- 500 X 300 X 400 - 200
type F S GI SS BS ALU a b e L
F S GI SS BS ALU W H e L
Flanged connection Slip connection Galvanised material Stainles Steel material Black Steel material Aluminum material width height Shift length
ventilation systems
ventilation systems
T-piece with Rectangular Outlet
RTF
Dimension
L
H
W
Description On its ends the T-piece has either plain end for slip connection or mounting frame with sheet metal joining profiles. The T-piece enables to design a ventilation system with a 90 degree tap and an outlet reduction. The inlet and passage are fixed.
Example Identification product code
RTF
F
GI
- 500 X 300 - 600 - 250 -
20
-
20
type F S GI SS BS ALU W H L d e f
F S GI SS ALU BS W H L c
Flanged Connection Slip Connection galvanized material Stainless Steel material Aluminum material black steel material width height length outlet width
d e f
outlet Height longitudinal outlet shift transverse outlet shift
ventilation systems
ventilation systems
c
Twin Bend
RTBF
Dimension
W
Description On its ends the twin bend has either plain ends for slip connection or has mounting frames with sheet metal joining profiles. It enables to design a ventilation system with two taps directed any angle. Turning vanes can be used.
Example Identification product code
RTBF
F
GI
- 500 X 300 - 300 - 200 - 100
type F S GI SS BS ALU W H c d e
F S GI SS BS ALU W H c d e
Flanged Connection Slip Connection galvanized material Stainless Steel material Black Steel material aluminum material height width outlet height 1 outlet height 2 base height
ventilation systems
ventilation systems
H
R-Fitting
RRF
H
L
W
H
Description On its ends the R-Fitting piece has either plain ends for slip connection or has mounting frames with sheet metal joining profile. The bend tap enables uniform air distribution with turning vanes to prevent air whirls in the duct.
Example Identification product code
RRF
F
GI
- 500 X 300 - 300 - 200 - 600
type F S GI SS BS ALU W H c d L
F S GI SS BS ALU H W c d L
Flange Connection Slip Connection Galvanized material Stainless Steel material Black Steel material Aluminum material height width passage height outlet height length
ventilation systems
ventilation systems
L
End Cap
RECF
Dimension
W
H
H
W
Description The end cap is intended for terminating ducts. It is made of galvanised sheet metal the flange is made of an end cover with sheet metal joining profiles.
Example Identification product code
RECF
F
GI
- 500 X 300 -
30
type F S GI SS BS ALU W H e
F S GI SS BS ALU W H e
Flanged Connection Slip Connection Galvanised material Stainless Steel material Black Steel material aluminum material width height extension (by defult, e = 30 mm)
ventilation systems
ventilation systems
Rectangular ducts Technical Guidelines
ventilation systems
ventilation systems
ventilation systems
ventilation systems
I - Rectangular Ducts: Fabrication Procedure
Fabrication Procedure: According to The Drawing / Take Off Provided by The Client, MCI Engineers The Start The Operation of Production Following The Consequent Steps: a) b) c) d) e) g)
Shop Drawing to be Prepared. Accurate B.O.Qs and work orders to be released Fabrication Begins releasing the work order to CNC Plasma and CNC Autofold coil line All Ductworks are Fabricated According to SMACNA or DW 142/144 Each Item to be Numbered On The Drawing Provided, Fabricated Items to be Labeled: Each Label Shows The Project Name, Customer Name, Job Ref., Item Number, Item Description (Straight Duct, Elbow, Tee Etc...), Size & Length, Thickness. QA/QC to be Made For Each Item Before Collection (Delivery).
9
PB 300X300X3000
8 6
5 8 10
8 6
10
BOD 2450
BOD 2450
500X300
4 BOD 2800 3
8 10
8 10
2 BOD 2450
600X300
BOD 2450
2 BOD 2800
15
15
1 14 500X200 13
14
FCU-42TX-036
12 BOD 2800
500X200
11
12
13
BOD 2800
ventilation systems
ventilation systems
8 6
8 4
BOD 2450
7
I - Rectangular Ducts: - Slip & Drive Longitudinal seams Asper:
- Slide-on Flange - Companion Angle
- SMACNA (2nd Edition - 1995) See Pages 1.17/1.67/1.74 - SMACNA (3rd Edition - 2005) See Pages 2.10/2.113 - DW/144 See Page 20
ventilation systems
ventilation systems
I - Rectangular Ducts: - Slip & Drive
Asper:
- Slide-on Flange - Companion Angle
- SMACNA (2nd Edition - 1995) See Pages 2.3/2.9/A.42/A.43 - SMACNA (3rd Edition - 2005) See Pages 4.3/4.9/4.12/4.13 - DW/144 See Pages 55/57
ventilation systems
ventilation systems
I - Rectangular Ducts: - Slip & Drive
Asper:
- Slide-on Flange - Companion Angle
- SMACNA (2nd Edition - 1995) See Pages 2.8/2.9 - SMACNA (3rd Edition - 2005) See Pages 4.8/4.9 - DW/144 See Page 55/58
ventilation systems
ventilation systems
I - Rectangular Ducts: - Slip & Drive
Asper:
- Slide-on Flange - Companion Angle
- SMACNA (2nd Edition - 1995) See Pages 2.8/2.9/3.18 - SMACNA (3rd Edition - 2005) See Pages 3.36/4.8/4.9 - DW/144 See Pages 55/58
ventilation systems
ventilation systems
I - Rectangular Ducts: - Slip & Drive
Asper:
- Slide-on Flange - Companion Angle
- SMACNA (2nd Edition - 1995) See Pages 2.7 - SMACNA (3rd Edition - 2005) See Pages 4.7 - DW/144 See Page 52/55
ventilation systems
ventilation systems
I - Rectangular Ducts: - Slip & Drive Splitter Damper
- Slide-on Flange - Companion Angle
ventilation systems
ventilation systems
I - Rectangular Ducts: - Slip & Drive Duct Acoustic Liner Asper:
- Slide-on Flange - Companion Angle
- SMACNA (2nd Edition - 1995) See Pages 2.24/2.28 - SMACNA (3rd Edition - 2005) See Pages 7.13/7.17
ventilation systems
ventilation systems
I - Rectangular Ducts:
Plenum Box Asper:
- SMACNA (2nd Edition - 1995) See Pages 2.20 - SMACNA (3rd Edition - 2005) See Pages 10.1
ventilation systems
ventilation systems
I - Rectangular Ducts: - Slip & Drive Accessories Asper:
- Slide-on Flange - Companion Angle
- SMACNA (2nd Edition - 1995) See Pages 1.14/1.61 - SMACNA (3rd Edition - 2005) See Pages 2.6/2.7/2.8 - DW/142 See Page 28/31
ventilation systems
ventilation systems
I - Rectangular Ducts:
Accessories Asper:
- SMACNA (2nd Edition - 1995) See Pages 1.14/1.61 - SMACNA (3rd Edition - 2005) See Pages 2.6/2.7/2.8 - DW/142 See Pages 28/31
ventilation systems
ventilation systems
I - Rectangular Ducts: VENTO Accessories (BEGIUM)
ventilation systems
ventilation systems
I - Rectangular Ducts:
Ductwork Construction Schedule - Table 1A / 1B / 1C - 1” Asper:
- SMACNA (3rd Edition - 2005 Table 2.2) See Pages 2.16
ventilation systems
ventilation systems
I - Rectangular Ducts:
Ductwork Construction Schedule - Table 2A / 2B / 2C - 2” Asper:
- SMACNA (3rd Edition - 2005 Table 2-3) See Pages 2.18
ventilation systems
ventilation systems
I - Rectangular Ducts:
Ductwork Construction Schedule - Table 3A / 3B / 3C - 3” Asper:
- SMACNA (3rd Edition - 2005 Table 2-4) See Pages 2.20
ventilation systems
ventilation systems
I - Rectangular Ducts:
Ductwork Construction Schedule - Table 4A / 4B / 4C - 4” Asper:
- SMACNA (3rd Edition - 2005 Table 2-5) See Page 2.22
ventilation systems
ventilation systems
I - Rectangular Ducts:
Ductwork Construction Schedule - Table 5A / 5B / 5C - 500 Pa Asper:
- DW/142 See Page 18 - DW/144 See Page 18
ventilation systems
ventilation systems
I - Rectangular Ducts:
Ductwork Construction Schedule - Table 6A / 6B / 6C - 1000 Pa Asper:
- DW/142 See Page 19 - DW/144 See Page 19
ventilation systems
ventilation systems
I - Rectangular Ducts:
Ductwork Construction Schedule - Table 7A / 7B / 7C - 2000 Pa Asper:
- DW/142 See Page 19
ventilation systems
ventilation systems
II - Rectangular Ducts Welded Longitudinal Seams & Connections
ventilation systems
ventilation systems
II - Rectangular Ducts Welded Asper:
- SMACNA (2nd Edition - 1995) See Pages 2.3/2.9/A.42/A.43 - DW/144 See Pages 55/57
ventilation systems
ventilation systems
II - Rectangular Ducts Welded Asper:
- SMACNA (2nd Edition - 1995) See Pages 2.8/2.9 - DW/144 See Pages 55/58
ventilation systems
ventilation systems
II - Rectangular Ducts Welded Asper:
- SMACNA (2nd Edition - 1995) See Page 2.7 - DW/144 See Pages 55/57
ventilation systems
ventilation systems
II - Rectangular Ducts Welded Tables: - Coating Mass (Weight) - Galvanized Thicknesses - Weight of Galvanized Steel Asper:
- DW/144 See Pages 93/97/98
Weight of Galvanized Steel Thickness mm
Kg
0.5
4.42
0.6
5.64
0.8
6.86
1.0
8.08
1.2
10.52
1.6
12.96
ventilation systems
ventilation systems
Weight per Square meter
Surface Area Calculation STRAIGHT DUCT RECTANGULAR TO ROUND TRANSITION B A
L
AREA = 2 (A +B) L
A
B Ø L
REDUCER AREA = 2 (A +B) L
B
ELBOW L
A
B1 L1
AREA = 2 (A +B) L
A1 B TEE
A
L2 A1
AREA = 2 (A +B) (L1 + L2) L1
B1
L3
OFFSET B3
B2
L1
A3
A2 L2
B L2
AREA = 2 (A1 +B1) L1 + 2 (A2 +B2) L2 + 2 (A3 +B3) L3
A AREA = 2 (A +B) (L1 + L2)
ventilation systems
ventilation systems
Spiral Ducts and Round Fittings
ventilation systems
ventilation systems
ventilation systems
ventilation systems
Single Wall
ventilation systems
ventilation systems
Single Wall
ventilation systems
ventilation systems
Double Wall
ventilation systems
ventilation systems
Double Wall
ventilation systems
ventilation systems
ventilation systems
ventilation systems
Fire Rated Ducts
Fire Rated Ducts
FIRE RESISTANT DUCTWORK SYSTEMS
01
COMPANY PROFILE Firemac was established in 1989 and has grown to become a major provider of passive fire protection products, both in the UK and internationally. Passive fire protection (PFP) is a key part of the structural integrity and fire safety in a building. Passive fire protection contains or slows the spread of a fire through the use of fire-resistant ductwork, walls, floors, and doors. Firemac has been at the forefront in product design for the PFP sector for over 20 years, and has extensive experience advising a broad range of clients on solution selection through to designing and installing ductwork protection systems, fire walls and ceilings, and fire resistant services’ enclosures. Firemac’s market leading product range for ductwork - Firemac FM60, Firemac FM120 and Firemac FM240 - has a proven track record in builds both in the UK, and increasingly in international markets. More recently, Firemac has introduced FM Blue – an impact resistant, steel-faced board that can be used to form fire resisting walls, ceilings and enclosures. As our customers would expect of a company working in safety critical systems Firemac is ISO 9001 registered and Third Party Accredited.
Firemac FM Ductwork Systems are in place across many builds in the UK and internationally, including the redevelopment of Terminal 2 at Heathrow Airport, London
Firemac FM Blue has been incorporated in a number of major civil engineering projects including Crossrail, Europe's biggest construction project.
02
FIREMAC FM60 / FM120 / FM240 DUCTWORK SYSTEMS
Building Regulations require that new buildings must be divided into fire compartments in order that the spread of fire in the building is contained. There are obvious areas of weakness which include doors, building services and ventilation ductwork passing from one compartment to another. In particular the standard ventilation ductwork system offers little or no protection against fire spread, and to overcome this fire resistant ductwork is used. Firemac FM ductwork systems gives ductworkers complete control of both fabrication and installation of fire resistant ducts where required in commercial developments.
Firemac’s FM systems have been designed around the needs of ductworkers, allowing them to manufacture fire resistant ductwork in their own factories without the need for third party suppliers. Using Firemac’s FM systems puts all elements of a contract in the hands of the ductworker, and allows entry into a specialist and lucrative market segment, without the need to develop highly expensive in house systems. Full training in the fabrication of fire resistant ductwork is given, and as part of Firemac’s service commitment we work with our customers as the ductworker’s technical support department. Firemac can deal directly with specifiers and consultants on any queries relating to fire protection, whether at the tender, fabrication, install or sign off stage. The National Museum of Scotland, first opened in 1866, has undergone a complete renovation at a cost of £47.5m. Firemac FM Ductwork Systems have been installed in the new restaurant in the Museum, which welcomed over 1.4m visitors last year
03
PRODUCT DESCRIPTION Firemac FM Ductwork Systems use a flexible glass fibre fabric, bonded both physically and mechanically onto the duct to give the required fire rating. The fabric material is only 1mm thick and adds virtually nothing to the overall weight of the duct. The fabric is silver grey in appearance, unobtrusive and gives a neat, aesthetically pleasing finish. During the finishing process the fabric is overprinted with FIRE RATED to ensure it remains independent of standard ventilation ductwork and service trays. Ductwork is made in the normal manner, broadly following the requirements of DW144 / SMACNA, and there is usually no requirement to upgrade the gauge of steel used to achieve the required fire resistance. Once the duct has been fabricated the fabric is applied quickly and easily, and bonded to the duct using a contact adhesive. The fabric is mechanically fixed using mild steel rivets or screws along a single longitudinal edge. Flanges are then tapped on and fixed mechanically to the duct - no curing time is required and the duct is then ready to ship to site for installation.
TESTING AND THIRD PARTY CERTIFICATION With standard ventilation ductwork offering limited protection against fire spread it is an easy way for fire and smoke to spread rapidly through a building, penetrating fire compartment walls and floors and cutting off means of escape. Therefore it is critical that any safety critical product is rigorously tested. Firemac FM systems have been tested and assessed to BS476, Part 24, and demonstrated fire resistance of up to four hours. A full appraisal of Firemac FM duct systems, which includes a summary of the supporting test evidence, has been issue by the Building Research Establishment (BRE) and is available on request. Independent inspection of Firemac FM Ductwork Systems has been carried out by IFC, a UKAS accredited and internationally recognised provider of Third Party Certification.
04
FIREMAC SYSTEMS: YOUR PARTNER FOR FIRE RESISTANT DUCTWORK For companies who have not installed fire rated ductwork before, or have limited experience, initial entry into this market can seem daunting. As it is a safety critical area of the industry, the technical knowledge required can be off putting. Firemac acts as your in-house technical department, and will answer any questions you or a consultant has regarding fire rated ductwork, and the performance of Firemac's range of systems. Our technical team include some of the UK’s leading experts on passive fire protection and Firemac's systems have been designed to be a straightforward addition to the range of services you offer.
BENEFITS FOR DUCTWORKERS The process of becoming a Firemac installer is simple and involves no set up costs, or licencing agreement. Using Firemac systems allows a ductworker to bring all aspects of a project under their control without the need to outsource to third party contractors. The benefits of using Firemac’s range of ductwork systems include: l l l l l l l l l l
System proven in UK and Middle East in a number of high profile builds The fabric is applied by ductworkers themselves, quickly and easily, with minimum wastage, and at the point of fabrication, giving them complete control of the whole contract, without the need to resort to any third party suppliers for fire rated ductwork. There is no loss of time on site, continuity is guaranteed and any plan changes are easily accomplished. Cuts out the need to develop costly in-house systems Allows the ductworker to build a reputation for fire resistant ductwork Full training given at customer’s premises Complete technical back up and site sign off The fabric itself is extremely strong, while its flexibility means it is easy to apply, usually by one worker. No curing time is required, meaning that fire resisting ductwork can be built, delivered and installed within hours. There is usually no need to upgrade the duct to achieve the required fire resistance.
05
TRAINING AND ONGOING SUPPORT All of Firemac’s customers receive full training prior to the fabrication or installation of fire resistant ductwork. The training package is delivered at the customer’s factory and is a combination of technical presentations, training videos and hands on manufacture if fire resistant ductwork. At the completion of the training each company is certificated as an Accredited Installer. An annual training refresher is also given and any changes to the Technical Manual is communicated directly to the customer. Each customer is listed on www.firemac.com and can access their own secure area of the website where the training packages are hosted. Completed projects and photographs can be listed within the customer’s details on the website, allowing them to build a portfolio of successful projects and a reputation for the manufacture and installation of fire resistant ductwork. Firemac recognises that specifiers and building control officers can interpret the requirements around the installation of fire resistant ductwork in different ways. We will work directly with specifiers and other key influencers to ensure any technical submission meets their requirements, and become our customer’s in house technical department. Firemac inspectors will visit the instalation of the ductwork on site to ensure it is fitted to the requirements of the Technical Manual, and issue a Certificate of Conformity in the name of the ductworker.
FIREMAC TRAINING PACKAGE The training is a mixture of presentations, video and hands on fabrication designed to give our customers an introduction into the purpose and requirements of fire resistant ductwork. The training will include the fabrication of standard fire resistant ductwork, flanges and mechanical fixings, transitions and bends, patches, access panels and installation.
06 BENEFITS FOR SPECIFIERS The fabric itself is extremely strong, while its flexibility means it is easy to apply, usually by one worker. It is applied after the duct has been manufactured by a combination of adhesive and mechanical fixings - no curing time is required, meaning that fire resisting ductwork can be built, delivered and installed within hours without the need to use any third party contractors. This ensures any plan amendments can be easily and quickly accommodated, without any loss of time on site. There is usually no need to upgrade the duct to achieve the required fire rating. l l l l l l l l
Proven track record in major builds Industry leading technical expertise in passive fire protection Tested to British and European standards Fire resistance from 1-4 hours No need to upgrade ductwork or hangers reducing time, wastage and cost Delivered on site, fire rated and ready to install No requirements for second trades Firemac is a ISO 9001 accredited company
APPLICATIONS Suitable for a wide range of environments, Firemac’s fire resistant ductwork has been successfully installed in factories, commercial kitchens, schools, hospitals, shopping centres and a wide range of other projects for the purposes of safeguarding life and property from fire. Firemac fire resisting ductwork can be used in any area of a building to protect life and property and to aid the emergency services in the event of a fire. Typical areas include: l l l l l l l l l l
Ventilation Ductwork Smoke Extract Ductwork Systems Non Domestic Kitchen Extract Ductwork Basement and Enclosed Car Park Duct Systems Escape Route Ducts Pressurisation Ductwork Systems Basement Smoke Extract Systems Dual Ventilation / Smoke Extract Systems Fume Cupboard Extract Systems High Risk Areas
07
UK PROJECTS Firemac’s range of systems have been successfully installed in a range of builds including schools and universities, restaurants, shopping complexes, hospitals, offices and other commercial developments Recent customers include a wide range of blue chip private sector organisations including Holiday Inn, Marks and Spencer, Premier Inn, Burger King, Wagamama, TGI Friday, Easy Jet, Tesco Bank, Next, Boots, Debenhams and ASDA. Public sector clients include a number of NHS Hospital Trusts, universities, schools and colleges, the MOD and the Nuclear Decommissioning Authority. An up to date list of recent projects is available at www.firemac.com
UK EXHIBITIONS Firemac has attended a number of UK based exhibitions including Firex International in order to promote the brand to specifiers and other influencers.
08
Hamad Medical City in Doha, Qatar, is a world class medical facility. The project is spread over 500,000 square metres and comprises three hospitals with a total bed capacity of 1,100. It is the second largest healthcare development in the Middle East. When completed over 25,000 square metres of Firemac FM Ductwork Systems will form an integral part of the building’s fire protection.
INTERNATIONAL PROJECTS Firemac has partnerships in a number of international markets in the Middle East and Southern Asia, including Malaysia, India, UAE, Qatar and Saudi Arabia. In each market Firemac’s range of products complies with local Civil Defence requirements. As in the UK full training is given to Firemac’s international partners alongside ongoing technical and sales support.
INTERNATIONAL EXHIBITIONS Firemac also exhibits alongside our partners at the key trade shows in the region, including The Big 5 series of construction exhibitions and Project Qatar. This allows Firemac to meet key buyers and specifiers with our partners, promote the range of products and answer any technical queries.
ventilation systems
ventilation systems
Aluminum Pre Insulated Ducts
Aluminum Pre Insulated Ducts
Technical Data & Useful Notes
ventilation systems
ventilation systems
Design Velocities for Air-Handling System Components Face Velocity,
Duct element
fpm
Louvers Intake 1. 7000 cfm and greater 2. 2000 to 7000 cfm
400 250 to 400
Exhaust 1. 5000 cfm and greater 2. Less than 5000 cfm
500 300 to 400
Filters Panel filters 1. Viscous impingement 2. Dry-type extended-surface Flat (low-efficiency) Pleated media (medium efficiency) HEPA Renewable media filters 1. Moving-curtain viscous impingement 2. Moving-curtain dry-media Electronic air cleaners, ionizing-type Heating coils Steam and hot water
Dehumidifying coils
200 to 800 Duct velocity up to 750 250 500 200 150 to 350 400 to 600 (200 min., 1500 max.) 500 to 600
Air washers Spray type High-velocity spray type
300 to 700 1200 to 1800
Source: ASHRAE Handbook 1989, Fundamentals
Recommended Maximum Duct Velocities for Low Velocity Systems (fpm) APPLICATION Residences Apartments Hotel Bedrooms Hospital Bedrooms Private Offices Directors Rooms Libraries Theaters Auditoriums General Offices High Class Restaurants High Class Stores Banks Average Stores Cafeterias Industrial
CONTROLLING FACTOR NOISE GENERATION Main Ducts
CONTROLLING FACTOR-DUCT FRICTION Main Ducts Branch Ducts Supply Return Supply Return
600
1000
800
600
600
1000
1500
1300
1200
1000
1200
2000
1500
1600
1200
800
1300
1100
1000
800
1500
2000
1500
1600
1200
1800
2000
1500
1600
1200
2500
3000
1800
2200
1500
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Velocity Pressures VELOCITY PRESSURE (in. wg) 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29 0.30 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 0.49 0.50 0.51 0.52 0.53 0.54 0.55 0.56
VELOCITY (fpm) 400 565 695 800 895 980 1060 1135 1200 1265 1330 1385 1445 1500 1550 1600 1650 1700 1745 1790 1835 1880 1920 1960 2005 2040 2080 2120 2160 2190 2230 2270 2300 2340 2370 2400 2440 2470 2500 2530 2560 2600 2630 2660 2690 2720 2750 2770 2800 2830 2860 2890 2920 2940 2970 3000
VELOCITY PRESSURE (in. wg) 0.58 0.60 0.62 0.64 0.66 0.68 0.70 0.72 0.74 0.76 0.78 0.80 0.82 0.84 0.86 0.88 0.90 0.92 0.94 0.96 0.98 1.00 1.04 1.08 1.12 1.16 1.20 1.24 1.28 1.32 1.36 1.40 1.44 1.48 1.52 1.56 1.60 1.64 1.68 1.72 1.76 1.80 1.84 1.88 1.92 1.96 2.00 2.04 2.08 2.12 2.16 2.20 2.24 2.28
VELOCITY (fpm) 3050 3100 3150 3200 3250 3300 3350 3400 3450 3490 3540 3580 3630 3670 3710 3760 3800 3840 3880 3920 3960 4010 4080 4160 4240 4310 4390 4460 4530 4600 4670 4740 4810 4870 4940 5000 5070 5130 5190 5250 5310 5370 5430 5490 5550 5610 5660 5720 5780 5830 5890 5940 5990 6050
NOTES: 1. Data for standard air (29.92 in. Hg and 70°F) 2. Data derived from the following equation: where:
V = velocity in fpm H = pressure difference termed "velocity head" (in.
ventilation systems
ventilation systems
Circular Equivalents of Rectangular Duct for Equal Friction and Capacity Lgth
b
Adj.
a
6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 112 114 116 118 120 122 124 126 128 130 132 134 136 138 140 142 144
6 6.6 7.6 8.4 9.1 9.8 10.4 11.0 11.5 12.0 12.4 12.8 13.2 13.6 14.0 14.4 14.7 15.0 15.3 15.6 15.9 16.2 16.5 16.8 17.1 17.3 17.6 17.8 18.1
8
8.7 9.8 10.7 11.5 12.2 12.9 13.5 14.1 14.6 15.1 15.6 16.1 16.5 17.0 17.4 17.8 18.2 18.5 18.9 19.3 19.6 19.9 20.2 20.6 20.9 21.2 21.5 21.7 22.0 22.3 22.6 22.8 23.1 23.3 23.6 23.8 24.1
Table based on De = 1.3[(ab)
10
10.9 12.0 12.9 13.7 14.5 15.2 15.9 16.5 17.1 17.7 18.3 18.8 19.3 19.8 20.2 20.7 21.1 21.5 21.9 22.3 22.7 23.1 23.5 23.8 24.2 24.5 24.8 25.1 25.5 25.8 26.1 26.4 26.7 27.0 27.3 27.5 27.8
0.625
/(a+b)
Length of One Side of Rectangular Duct (a), inches 12 14 16 18 20 22 Circular Duct Diameter, inches
13.1 14.2 15.1 16.0 16.8 17.6 18.3 19.0 19.6 20.2 20.8 21.4 21.9 22.4 22.9 23.4 23.9 24.4 24.8 25.2 25.7 26.1 26.5 26.9 27.3 27.6 28.0 28.4 28.7 29.1 29.4 29.7 30.0 30.4 30.7 31.0 31.3 31.6 31.9 32.2 32.5 32.8 33.0 33.3
0.250
]
15.3 16.4 17.3 18.2 19.1 19.9 20.6 21.3 22.0 22.7 23.3 23.9 24.5 25.0 25.6 26.1 26.6 27.1 27.6 28.0 28.5 28.9 29.4 29.8 30.2 30.6 31.0 31.4 31.8 32.2 32.5 32.9 33.3 33.6 33.9 34.3 34.6 34.9 35.3 35.6 35.9 36.2 36.5 36.8 37.1 37.4 37.7 38.0 38.3
17.5 18.5 19.5 20.4 21.3 22.1 22.9 23.7 24.4 25.1 25.7 26.4 27.0 27.6 28.1 28.7 29.2 29.8 30.3 30.8 31.2 31.7 32.2 32.6 33.1 33.5 33.9 34.4 34.8 35.2 35.6 36.0 36.3 36.7 37.1 37.4 37.8 38.2 38.5 38.8 39.2 39.5 39.8 40.2 40.5 40.8 41.1 41.4 41.7 42.0 42.3 42.6 42.9 43.2 43.5 43.8 44.0
24
a
26
19.7 20.7 21.9 21.7 22.9 24.0 22.7 23.9 25.1 26.2 23.5 24.9 26.1 27.3 28.4 24.4 25.8 27.1 28.3 29.5 25.2 26.6 28.0 29.3 30.5 26.0 27.5 28.9 30.2 31.5 26.7 28.3 29.7 31.1 32.4 27.4 29.0 30.5 32.0 33.3 28.1 29.8 31.3 32.8 34.2 28.8 30.5 32.1 33.6 35.1 29.4 31.2 32.8 34.4 35.9 30.0 31.8 33.5 35.1 36.7 30.6 32.5 34.2 35.9 37.4 31.2 33.1 34.9 36.6 38.2 31.8 33.7 35.5 37.2 38.9 32.3 34.3 36.2 37.9 39.6 32.9 34.9 36.8 38.6 40.3 33.4 35.4 37.4 39.2 41.0 33.9 36.0 38.0 39.8 41.6 34.4 36.5 38.5 40.4 42.3 34.9 37.1 39.1 41.0 42.9 35.4 37.6 39.6 41.6 43.5 35.9 38.1 40.2 42.2 44.1 36.3 38.6 40.7 42.8 44.7 36.8 39.1 41.2 43.3 45.3 37.2 39.5 41.7 43.8 45.8 37.7 40.0 42.2 44.4 46.4 38.1 40.5 42.7 44.9 47.0 38.5 40.9 43.2 45.4 47.5 38.9 41.4 43.7 45.9 48.0 39.3 41.8 44.1 46.4 48.5 39.7 42.2 44.6 46.9 49.0 40.1 42.6 45.0 47.3 49.6 40.5 43.1 45.5 47.8 50.0 40.9 43.5 45.9 48.3 50.5 41.3 43.9 46.4 48.7 51.0 41.6 44.3 46.8 49.2 51.5 42.0 44.7 47.2 49.6 52.0 42.4 45.0 47.6 50.1 52.4 42.7 45.4 48.0 50.5 52.9 43.1 45.8 48.4 50.9 53.3 43.4 46.2 48.8 51.3 53.8 43.7 46.5 49.2 51.7 54.2 44.1 46.9 49.6 52.2 54.6 44.4 47.3 50.0 52.6 55.1 44.7 47.6 50.3 53.0 55.5 45.1 48.0 50.7 53.4 55.9 45.4 48.3 51.1 53.7 56.3 45.7 48.6 51.4 54.1 56.7 46.0 49.0 51.8 54.5 57.1 46.3 49.3 52.2 54.9 57.5 46.6 49.6 52.5 55.3 57.9 46.9 50.0 52.9 55.6 58.3 47.3 50.3 53.2 56.0 58.7 47.5 50.6 53.5 56.4 59.1 47.8 50.9 53.9 56.7 59.4 48.1 51.2 54.2 57.1 59.8 48.4 51.6 54.5 57.4 60.2 48.7 51.9 54.9 57.8 60.5 49.0 52.2 55.2 58.1 60.9 49.3 52.5 55.5 58.4 61.3 49.6 52.8 55.8 58.8 61.6 b Length adjacent side of rectangular duct (b), in.
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ventilation systems
28
30.6 31.7 32.7 33.7 34.6 35.6 36.4 37.3 38.1 38.9 39.7 40.5 41.2 41.9 42.7 43.3 44.0 44.7 45.3 46.0 46.6 47.2 47.8 48.4 48.9 49.5 50.1 50.6 51.1 51.7 52.2 52.7 53.2 53.7 54.2 54.7 55.2 55.6 56.1 56.6 57.0 57.5 57.9 58.3 58.8 59.2 59.6 60.0 60.4 60.9 61.3 61.7 62.1 62.4 62.8 63.2 63.6 64.0 64.3
a
Circular Equivalents of Rectangular Duct for Equal Friction and Capacity (Cont.) Lgth
30
32
34
Adj. 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 112 114 116 118 120 122 124 126 128 130 132 134 136 138 140 142 144
32.8 33.9 34.9 35.9 36.8 37.8 38.7 39.5 40.4 41.2 42.0 42.8 43.5 44.3 45.0 45.7 46.4 47.1 47.7 48.4 49.0 49.6 50.3 50.9 51.4 52.0 52.6 53.2 53.7 54.3 54.8 55.3 55.8 56.4 56.9 57.4 57.9 58.3 58.8 59.3 59.8 60.2 60.7 61.1 61.6 62.0 62.5 62.9 63.3 63.8 64.2 64.6 65.0 65.4 65.8 66.2 66.6 67.0
35.0 36.1 37.1 38.1 39.0 40.0 40.9 41.8 42.6 43.5 44.3 45.1 45.8 46.6 47.3 48.0 48.7 49.4 50.1 50.8 51.4 52.1 52.7 53.3 53.9 54.5 55.1 55.7 56.3 56.8 57.4 57.9 58.4 59.0 59.5 60.0 60.5 61.0 61.5 62.0 62.5 63.0 63.4 63.9 64.4 64.8 65.3 65.7 66.2 66.6 67.0 67.5 67.9 68.3 68.7 69.1 69.5
37.2 38.2 39.3 40.3 41.3 42.2 43.1 44.0 44.9 45.7 46.5 47.3 48.1 48.9 49.6 50.4 51.1 51.8 52.5 53.2 53.8 54.5 55.1 55.8 56.4 57.0 57.6 58.2 58.8 59.3 59.9 60.5 61.0 61.6 62.1 62.6 63.2 63.7 64.2 64.7 65.2 65.7 66.2 66.6 67.1 67.6 68.0 68.5 69.0 69.4 69.9 70.3 70.7 71.2 71.6 72.0
b
a
Table based on De = 1.3[(ab)
0.625
/(a+b)
Length of One Side of Rectangular Duct (a), inches 36 38 40 42 44 46 Circular Duct Diameter, inches
39.4 40.4 41.5 42.5 43.5 44.4 45.3 46.2 47.1 48.0 48.8 49.6 50.4 51.2 51.9 52.7 53.4 54.1 54.8 55.5 56.2 56.9 57.5 58.2 58.8 59.4 60.1 60.7 61.3 61.9 62.4 63.0 63.6 64.1 64.7 65.2 65.8 66.3 66.8 67.3 67.8 68.3 68.8 69.3 69.8 70.3 70.8 71.3 71.7 72.2 72.6 73.1 73.6 74.0 74.4
0.250
]
41.5 42.6 43.7 44.7 45.7 46.6 47.5 48.4 49.3 50.2 51.0 51.9 52.7 53.5 54.2 55.0 55.7 56.5 57.2 57.9 58.6 59.3 59.9 60.6 61.2 61.9 62.5 63.1 63.7 64.3 64.9 65.5 66.1 66.7 67.2 67.8 68.3 68.9 69.4 69.9 70.5 71.0 71.5 72.0 72.5 73.0 73.5 74.0 74.5 74.9 75.4 75.9 76.3 76.8
43.7 44.8 45.8 46.9 47.9 48.8 49.7 50.7 51.6 52.4 53.3 54.1 54.9 55.7 56.5 57.3 58.0 58.8 59.5 60.2 60.9 61.6 62.3 63.0 63.6 64.3 64.9 65.6 66.2 66.8 67.4 68.0 68.6 69.2 69.8 70.3 70.9 71.4 72.0 72.5 73.1 73.6 74.1 74.6 75.1 75.7 76.2 76.7 77.1 77.6 78.1 78.6 79.1
48
50
45.9 47.0 48.1 48.0 49.2 50.3 49.1 50.2 51.4 52.5 50.0 51.2 52.4 53.6 54.7 51.0 52.2 53.4 54.6 55.7 52.0 53.2 54.4 55.6 56.8 52.9 54.2 55.4 56.6 57.8 53.8 55.1 56.4 57.6 58.8 54.7 56.0 57.3 58.6 59.8 55.5 56.9 58.2 59.5 60.8 56.4 57.8 59.1 60.4 61.7 57.2 58.6 60.0 61.3 62.6 58.0 59.4 60.8 62.2 63.6 58.8 60.3 61.7 63.1 64.4 59.6 61.1 62.5 63.9 65.3 60.3 61.9 63.3 64.8 66.2 61.1 62.6 64.1 65.6 67.0 61.8 63.4 64.9 66.4 67.9 62.6 64.1 65.7 67.2 68.7 63.3 64.9 66.5 68.0 69.5 64.0 65.6 67.2 68.7 70.3 64.7 66.3 67.9 69.5 71.0 65.4 67.0 68.7 70.2 71.8 66.0 67.7 69.4 71.0 72.6 66.7 68.4 70.1 71.7 73.3 67.3 69.1 70.8 72.4 74.0 68.0 69.7 71.5 73.1 74.8 68.6 70.4 72.1 73.8 75.5 69.2 71.0 72.8 74.5 76.2 69.9 71.7 73.4 75.2 76.9 70.5 72.3 74.1 75.8 77.5 71.1 72.9 74.7 76.5 78.2 71.7 73.5 75.4 77.1 78.9 72.3 74.1 76.0 77.8 79.5 72.8 74.7 76.6 78.4 80.2 73.4 75.3 77.2 79.1 80.8 74.0 75.9 77.8 79.7 81.5 74.5 76.5 78.4 80.3 82.1 75.1 77.1 79.0 80.9 82.7 75.6 77.6 79.6 81.5 83.3 76.2 78.2 80.2 82.1 84.0 76.7 78.7 80.7 82.7 84.6 77.2 79.3 81.3 83.2 85.2 77.8 79.8 81.8 83.8 85.7 78.3 80.4 82.4 84.4 86.3 78.8 80.9 82.9 84.9 86.9 79.3 81.4 83.5 85.5 87.5 79.8 81.9 84.0 86.1 88.0 80.3 82.5 84.6 86.6 88.6 80.8 83.0 85.1 87.1 89.2 81.3 83.5 85.6 87.7 89.7 b Length adjacent side of rectangular duct (b), in.
ventilation systems
ventilation systems
52
56.8 57.9 59.0 60.0 61.0 62.0 63.0 63.9 64.9 65.8 66.7 67.5 68.4 69.3 70.1 70.9 71.7 72.5 73.3 74.1 74.9 75.6 76.3 77.1 77.8 78.5 79.2 79.9 80.6 81.3 81.9 82.6 83.3 83.9 84.5 85.2 85.8 86.4 87.0 87.6 88.2 88.8 89.4 90.0 90.6 91.1 91.7
Circular Equivalents of Rectangular Duct for Equal Friction and Capacitya (Cont.) Lgth
54
56
58
Adj. 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 112 114 116 118 120 122 124 126 128 130 132 134 136 138 140 142 144
59.0 60.1 61.2 62.2 63.2 64.2 65.2 66.1 67.1 68.0 68.9 69.8 70.6 71.5 72.3 73.2 74.0 74.8 75.6 76.4 77.1 77.9 78.7 79.4 80.1 80.8 81.6 82.3 83.0 83.6 84.3 85.0 85.7 86.3 87.0 87.6 88.2 88.9 89.5 90.1 90.7 91.3 91.9 92.5 93.1 93.6
61.2 62.3 63.4 64.4 65.4 66.4 67.4 68.3 69.3 70.2 71.1 72.0 72.9 73.7 74.6 75.4 76.3 77.1 77.9 78.7 79.4 80.2 81.0 81.7 82.4 83.2 83.9 84.6 85.3 86.0 86.7 87.4 88.0 88.7 89.4 90.0 90.6 91.3 91.9 92.5 93.2 93.8 94.4 95.0 95.6
63.4 64.5 65.5 66.6 67.6 68.6 69.6 70.5 71.5 72.4 73.3 74.2 75.1 76.0 76.8 77.7 78.5 79.3 80.1 80.9 81.7 82.5 83.3 84.0 84.8 85.5 86.2 86.9 87.7 88.4 89.1 89.7 90.4 91.1 91.8 92.4 93.1 93.7 94.3 95.0 95.6 96.2 96.8 97.4
b
a
Table based on De = 1.3[(ab)
0.625
/(a+b)
Length of One Side of Rectangular Duct (a), inches 60 64 68 72 76 80 Circular Duct Diameter, inches
65.6 66.7 67.7 68.8 69.8 70.8 71.8 72.7 73.7 74.6 75.5 76.4 77.3 78.2 79.1 79.9 80.8 81.6 82.4 83.2 84.0 84.8 85.6 86.3 87.1 87.8 88.5 89.3 90.0 90.7 91.4 92.1 92.8 93.5 94.1 94.8 95.5 96.1 96.8 97.4 98.0 98.7 99.3
0.250
]
70.0 71.0 72.1 73.2 74.2 75.2 76.2 77.1 78.1 79.0 80.0 80.9 81.8 82.7 83.5 84.4 85.3 86.1 86.9 87.7 88.5 89.3 90.1 90.9 91.7 92.4 93.2 93.9 94.6 95.4 96.1 96.8 97.5 98.2 98.9 99.6 100.2 100.9 101.6 102.2 102.9
74.3 75.4 76.5 77.5 78.6 79.6 80.6 81.5 82.5 83.5 84.4 85.3 86.2 87.1 88.0 88.9 89.7 90.6 91.4 92.2 93.1 93.9 94.7 95.5 96.2 97.0 97.8 98.5 99.3 100.0 100.7 101.5 102.2 102.9 103.6 104.3 105.0 105.7 106.3
84
88
78.7 79.8 80.9 83.1 81.9 84.2 82.9 85.2 87.5 84.0 86.3 88.5 85.0 87.3 89.6 91.8 85.9 88.3 90.7 92.9 86.9 89.3 91.7 94.0 96.2 87.9 90.3 92.7 95.0 97.3 88.8 91.3 93.7 96.1 98.4 89.7 92.3 94.7 97.1 99.4 90.7 93.2 95.7 98.1 100.5 91.6 94.2 96.7 99.1 101.5 92.4 95.1 97.6 100.1 102.5 93.3 96.0 98.6 101.1 103.5 94.2 96.9 99.5 102.0 104.5 95.1 97.8 100.4 103.0 105.5 95.9 98.7 101.3 103.9 106.4 96.7 99.5 102.2 104.8 107.4 97.6 100.4 103.1 105.8 108.3 98.4 101.2 104.0 106.7 109.3 99.2 102.1 104.9 107.6 110.2 100.0 102.9 105.7 108.4 111.1 100.8 103.7 106.6 109.3 112.0 101.6 104.5 107.4 110.2 112.9 102.4 105.3 108.2 111.0 113.8 103.1 106.1 109.1 111.9 114.6 103.9 106.9 109.9 112.7 115.5 104.6 107.7 110.7 113.6 116.4 105.4 108.5 111.5 114.4 117.2 106.1 109.2 112.3 115.2 118.1 106.8 110.0 113.0 116.0 118.9 107.6 110.7 113.8 116.8 119.7 108.3 111.5 114.6 117.6 120.5 109.0 112.2 115.3 118.4 121.3 109.7 112.9 116.1 119.2 122.1 b Length adjacent side of rectangular duct (b), in.
ventilation systems
ventilation systems
92
100.6 101.7 102.7 103.8 104.8 105.9 106.9 107.9 108.9 109.9 110.8 111.8 112.7 113.7 114.6 115.5 116.4 117.3 118.2 119.1 120.0 120.8 121.7 122.5 123.4 124.2 125.0
Friction Loss Chart for Round Duct
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ventilation systems
FRiction of Round Duct System Elements
ventilation systems
ventilation systems
FRiction of Rectangular Duct System Elements
ventilation systems
ventilation systems
FRiction of Rectangular Duct System Elements (Cont)
ventilation systems
ventilation systems
FRiction of Round Elbows
ventilation systems
ventilation systems
FRiction of Rectangular Elbows
ventilation systems
ventilation systems
FRiction of Rectangular Elbows(Cont)
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ventilation systems
USEFUL FORMULAS 1. Airside System Equa on HS = 1.08 x CFM x ∆T HS = 1.1 x CFM x T HL = 0.68 x CFM X ∆WGR. HL = 4840 x CFM X ∆WLB. HT = 4.5 x CFM X ∆h HT = HS + HL HS HS SHR = = HS + HL HT HS = Sensible Heat (Btu/hr.) HL = Latent Heat (Btu/hr.) HT = Total Heat (Btu/hr.) ∆T = Temperature Difference (°F) ∆WGR. = Humidity Ra o Difference (Gr.H2O/lbs.DA) ∆WLB. = Humidity Ra o Difference (lbs.H2O/lbs.DA) ∆h = Enthalpy Difference (Btu/lbs.DA) CFM = Air Flow Rate (Cubic Feet per Minute) SHR = Sensible Heat Ra o m = Mass flow (lbs.DA/hr.) DA = Dry Air
2. Air Change Rate Equa ons AC
=
HR
CFM x 60 VOLUME
CFM = (AC/HR) x VOLUME 60 AC/HR = Air Change Rate per Hour CFM = Air Flow Rate (Cubic Feet per Minute) VOLUME = Space Volume (Cubic Feet)
3. Fan Laws CFM2 CFM1
= RPM2 RPM1
SP2 = CFM2 SP1 CFM1 BHP2 = BHP1
CFM2 CFM1
2
3
=
RPM2 RPM1
=
RPM2 RPM1
2
3
=
SP2 SP1
1.5
ventilation systems
ventilation systems
Cont. Useful Formulas…
BHP
=
MHP
CFM RPM SP BHP Fan Size
CFM x SP x SP.GR. 6356 x FANEFF.
=
BHP M / DEFF.
= Cubic Feet/Minute = Revolutions/Minute = in. W.G. = Break Horsepower = Constant
Air Density SP.GR.(Air) FANEFF M/DEFF M/D
= Constant = 1.0 = 65-85% = 80-95% = Motor/Drive
4. Ductwork Equations TP = SP + VP VP =
V 4005
2
V = Q = Q x 144 A WxH DBQ = 1.3 x (A x B) 0.25 (A + B) TP SP VP Q A W H DBQ A B
0.625
= Total Pressure = Static Pressure, Friction Losses = Velocity, ft./min. = Flow through Duct, CFM = Area of Duct, sq.ft. = Width of Duct, in. = Height of Duct, in. = Equivalent Round Duct Size for Rectangular Duct, in. = One Dimension of Rectangular Duct, in. = Adjacent Side of Rectangular Duct, in.
ventilation systems
ventilation systems
Conversions of length and Area To convert
From
To
Multiply by
Length Length Length Length Area Area Area Area
In. Ft m m In.² Ft² m² m²
m m In. Ft m² m² In.² Ft²
0.0254 0.3048 39.3701 3.28084 0.00064516 0.092903 1550 10.7639
Conversions of velocity, pressure, and flow rate To convert
From
To
Multiply by
Velocity Velocity Pressure Pressure Pressure Pressure Pressure Pressure Flow Rate Flow Rate Flow Rate Flow Rate Flow Rate Flow Rate
Ft/min M/s Psi Ft of water In. of water Pa Pa Pa Cfm Cfm Gpm m³/s L/s
M/s Ft/min Pa Pa Pa Psi Ft of water In. of water L/s m³/s L/s Cfm Cfm Gpm
0.00508 196.850 6894.76 2988.98 249.082 0.000145038 0.000334562 0.00401474 0.4719 0.000471947 0.0630902 2118.88 2.1191
L/s
ventilation systems
ventilation systems
15.8503
ventilation systems
Modern Contracting Co. P.O. Box 9677 - Riyadh 11423 Tel.: (011) 4653234 - Fax: 4658566 Email:
[email protected]
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