Heat Load Estimation E20 Form-SI

E20 SHEET

1 of 1

PREPARED BY

Khairul Anuar Abd Jabar

NAME OF JOB

D35 Upgrade For HVAC System

LOCATION

Miri Serawak

SPACE USED FOR

Electrical Main Room

SIZE

APPROVED

1,460.00

ITEM

HEAT LOAD ESTIMATION FORM

DATE

3.60

m2 X

ESTIMATE FOR

m3

LOCAL TIME SUN TIME

PEAK LOAD

September 4.00 pm

EQUIPMENT OPERATION

SUN GAIN OR TEMP. DIFF

AREA OR QUANTITY

5,256.00

=

FACTOR

LOCAL TIME SUN TIME

HOUR/DAY

10 hours

WATTS CONDITIONS

SOLAR GAIN - GLASS

DB

WB

DP

%RH

g/Kg

OUTDOOR (OA)

NW

GLASS

m2 x

x

0.57

0

ROOM (RM)

NE

GLASS

m2 x

x

0.57

0

DIFFERENCE

SE

GLASS

m2 x

x

0.57

0

SW

GLASS

m2 x

x

0.57

0

m2 x

x

-

-

OUTDOOR AIR PEOPLE x

7

l/s

5,256

l/s =

1,460.01

-

l/s VENTILATION =

1,460.01

Ventilation SKYLIGHT

1 Air change/hr :

0

m3 =

SOLAR & TRANS. GAIN - WALLS & ROOF NW

m2 x

WALL

3.04

x

0

NE

WALL

m2 x

x

3.04

0

SE

WALL

m2 x

x

3.04

0

SW

WALL

m2 x

x

3.04

0

ROOF - SUN

m2 x

x

0

ROOF - SHADED

m2 x

x

0

Infiltration

-

PARTITION

PEOPLE x

OPEN DOORS

DOORS x

l/s per person =

-

l/s per m

-

mX

l/s INFILTRATION =

m2 x

-

x

m2 x

-

x

5.89

APPARATUS DEW POINT & DEHUMIDIFIED AIR QUANTITY

0 0

EFFECTIVE SENSIBLE = HEAT FACTOR

CEILING

m2 x

-

x

0

FLOOR

m2 x

-

x

0

ADP

INDICATED ADP =

INFILTRATION

m2 x

-

x

0

Dehum. Rise

(1-

INTERNAL HEAT PEOPLE

-

x

245

0

POWER

KW

x

1,000.00

0

LIGHTS

WATTS

x

-

ERSH

-

ERTH

= 56.00 C

1.25

-

C - TADP

56.00 -

56.00 C) =

x

0

ADDITIONAL HEAT GAINS

x

0 SUB TOTAL

ERSH

(-

) SUB TOTAL

SAFETY FACTOR

5

%

ROOM SENSIBLE HEAT (RSH) =

OUTDOOR AIR

SUPPLY DUCT LEAK LOSS

%+

SUPPLY DUCT HEAT GAIN

l/s x

1,460.01

-

%+

FAN H.P.

C

x

Outlet Temp. Diff

-

RSH =

-

RSH =

#DIV/0! C (RM - OUTLET AIR)* 1.20

-

x

l/sDA

BF x

g/kg

kg/hr x

0 0

1.2

0

-

10

%

ROOM LATENT HEAT (RLH) =

l/s x

-

g/kg x

0.15

x (TOA

-

CTROOM

0.15 BF x (TEDB

-

C - TADP

-

C) = TEDB

-

56.00 C) = TLDB

TEWB

C,

TEWB

C

47.60 C C

NOTES

0

SUB TOTAL

1,460.01

1,460.01 l/sOA ######## l/s**

C +

**WHEN BYPASSING A MIXTURE OF OUTDOOR AND RETURN AIR, USE SUPPLY l/s, WHEN BYPASSING RETURN AIR ONLY, USE DEHUMIDIFIED l/s.

g/kg x

SUPPLY DUCT LEAKAGE LOSS

56.00

C +

FROM PSYCH. CHART:

0

SAFETY FACTOR

-

0

0

OUTDOOR AIR

TRM

0

0

x

l/sBA

3

ADDITIONAL HEAT GAINS 0.01

l/sDA =

205

x

2310

SQ.m x

-

*IF THIS DT IS TOO HIGH, DETERMINE SUPPLY CFM FOR DESIRED DIFFERENCE BY SUPPLY AIR QUANTITY FORMULA.

0

APPLIANCES, ETC.

VAPOR TRANS.

l/sSA

#DIV/0!

TADP

x

STEAM

CDESIRED DIFF

RESULTING ENT & LVG CONDITIONS AT APPARATUS 0.15

l/s x -

Bypass l/s

#DIV/0!

x

0

LATENT HEAT

PEOPLE

l/s SA

#DIV/0! 1.20

0

%

EFFECTIVE ROOM SENSIBLE HEAT (ERSH) =

INFILTRATION

l/s DA

SUPPLY AIR QUANTITY

0

0

-

(47.60) CDEHUM. RISE

x

Supply l/s x

C

(47.60) C

= 1.20

0

APPLIANCES, ETC.

#DIV/0!

SELECTED ADP =

0.15 BF) x (TRM

Dehum. l/s

m2 x

l/s OA

l/s OUTDOOR AIR THRU APPARATUS =

ESHF

STORAGE

-

l/s per door=

EXHAUST FAN CRACK

TRAN. GAIN - EXCEPT WALLS & ROOF ALL GLASS

SWINGING REVOLVING DOORS

0 0 0

15

%

0

BF x

3

0

EFFECTIVE ROOM LATENT HEAT (ERLH) =

0

EFFECTIVE ROOM TOTAL HEAT (ERTH) =

0

OUTDOOR AIR HEAT SENSIBLE

1,460.01

l/s X

-

Cx

(1-

0.15

BF) x

1.2

0

LATENT

1,460.01

l/s X RETURN DUCT % RSH + LEAKAGE GAIN

-

g/kg x

(1-

0.15

BF) x

3

0

RETURN DUCT HEAT GAIN RETURN AIR OR BLOW - THRU FAN

UMP H.P.

CHECK FIGURES % RSH

BTU/HR/SQ.FT =

-

GRAND TOTAL

1000

0

SQ.FT/PERSON =

WATT/SQ.FT =

GRAND TOTAL HEAT (GTH) OR DEHUMIDIFIER LOAD =

0

VENT. AIR CFM/SQ.FT

TOTAL AIR CFM/SQ.FT

TOTAL AIR CHANGE

MIN. OUTSIDE AIR CHANGE

kw. x

% GTH +

0

PIPING HEAT GAIN

% GTH REFRIGERATION LOAD =

RM SENS.

MIN.

0 0

AIR CONDITIONING LOAD ESTIMATE

FORM E - 20 (3 - 72)