Design of an Ice Plant With 78 Tons of Block Ice Capacity

Design of an Ice Plant with 78 tons of Block Ice Capacity

Using standard size of ice can 11” ×” ×!!” and 1"#$ calci%& chloride 'rine fro& (ent)s *echanical +ngineering ,and'ook- pp. 11/!8- ta'le 1 0eight of Ice Block- l'. or&al 2 344 5ct%al 2 31"  6i&e of $reezing $reezing 2 "4 hrs.

 6otal  6otal n%&'er of cans2

(Weight of ice , lbs. )( Freezing  Freezingtime time , hrs. hrs . ) eight of of one one block block of ice , lbs lbs . ) 24 ( Weight (

)( 50)  2 1483.33 24 ( 300 )

78 2000

2



≈  1144 cans to acco%nt for possi'le losses

Di&ensions of Brine 6ank  6he clearance for each sides is set to ."” and 'etween ice cans is 1."”. ecessary clearance for the hook of crane in har9esting ice 'locks is set to "”.

0idth 2  C s  :  C c  : 7 C i  :  N w ;w 2 ."” :"” :71."” :1411” 0 2 13"."”

al%es of ther&al cond%cti9ity of ins%lating &aterials and s%rface El& cond%ctance of o%tside air are taken fro& (ent)s *echanical +ngineering ,and'ook 6a'le 1- pp. 11/37. F%rface El& cond%ctance of calci%& chloride- !G- 'rine is taken fro& *ark)s Ftandard ,and'ook for *echanical +ngineers- 11 th  edition 6a'le1.1.11- pp. 1/1.

5t sides- 0 U2 1

 + 1  + 2  + 3 1 + + + hi k 1 k 2 k 3 ho 1

+

1

2

1 53

3

5

8

0.3

+ +

+

1 4.3

+

1 1.65

U 2 4.4""!

T  hr∗s-.ft.∗ F 

❑❑ 'w  2 U;5;t 2 4.4""!;13"."”A1 ; ".!=;8=/1" 'w  2 !84.""==

T   2 4.1!48! (w hr

5t sides- < ' L  2 U;5;t 2 4.4""!;=!”A1; ".!=;8=/1"

' L  2 374.788 5t top-

T   2 .7!=1 (w hr

U2 1

 + 1  + 2  + 3 1 + + + hi k 1 k 2 k 3 ho 1

+

1 1

2

53

+

1 1.15

U 2 4.!"7387

+

1 1.4

+

1 1.65

T  hr∗s-.ft.∗ F 

❑❑ 't   2 U;5;t 2 4.!"7387;13"."”A1 ;=!”A1 ;8=/1" T   2 3.!188" (w hr

' t   2 71.==!

$or total load'T   2

' (  :

' T  'w  :

' L  :

't   2 33.3"= : 4.1!48! : .7!=1 :

3.!188" ' T   2 !1.="8 (w

Checking 6?@

!1.="8 (w % 11.333

≤

≤

TOI  0.61

1 TO# 3.5167 w

17.8=8-



≤

78 0.61

H??D

Design proced%re will %se 14 6?@ for ice &aking e9aporator to acco%nt for other losses.

Design of +9aporator for Ice *aking Using horizontal shell J t%'e 'rine cooler for indirect syste&- no&inal size of t%'e dia&eter is ” .  6%'e speciEcations3K o&inal pipe size 2 ” Fched%le 84 LF ?%tside dia&eter 2 .37"” Inside dia&eter 2 1.3”  6hickness 2 4.18”  6he design proced%re will %se a te&perat%re rise of "#$ ! and s%ction press%re in an a&&onia syste& reM%ired for 1"#$ 'rine is 4 psig " 3.18 (Paa. 6he eM%i9alent e9aporator te&perat%re /1!.718#C = ".37!=#$. $or o9er/all heat transfer coeNcientr

( o) ri

r o ln ¿ / k   o  2

¿

( ) ro

ri h i

+¿

1

¿

 ,and'ook of *echanical @efrigeration- *acIntire- ,.O.- Brine Cooling, pp. "" 3 *ark)s Ftandard ,and'ook for *echanical +ngineers- 11 th ed.- 6a'le 8.7.3- pp.8/ 1!! ! (ent)s *echanical +ngineering ,and'ook- Brine Piping,  pp. 11/" " (ent)s *echanical +ngineering ,and'ook- Ice Making Capacity,  6a'le - pp. 11/! = @efrigeration and 5ir/conditioning- Fta. *aria- ,.B.- pp. 18"

(

(  o  2

1.1875 0.9695

1.1875 12

)∗

)

ln ¿ / 59

¿   1.1875 / 12 +¿ 0.9695 ∗53

((

12

)

)

1

¿ T  s-.ft.∗hr∗ F 

 o  2 37.33"=

 6e&perat%re 4#$

1"#

 t&a

 t&in ".37!=#