Sunday, 26 May 2019

Ice Making

ICE MAKING
  M, mass of water                    =   1000 kg.  =     1 tonne
C, specific heat of water          =  4.1868 kj/kgk,
Ci,  = specific  heat  of  water  = 1.17 kj / kgk
L, latant heat of  fusion of water = 335 kj / kgk
Ts, water temp.                        =  30 Deg. C,
Tbr, brine water temp.               = -10 deg. C
Refrigeration required to produece  01 Tonne Iice in  24 Hr.
=  M * (C * (Ts - 0)) + L + (Ci * ( 0 - (-10)) )
= 472100 kj / Tonne/ 24 hrs.
= 5.466 kwc
= 1.553TR.
Compressor capacity for Ice making
PD, required per tonne of Ice per day = 4.8 lps,
Number of Ice cane per tonne of Ice making
Brine Temp. 10 Kg. 22 Kg. 45 Kg. 90 Kg. 135 Kg. 180 Kg.
Deg.C, 10*25cm 10*40cm 20*40cm 28*56cm 28*56cm 28*56cm
-18 14 7 13 12 8 6
-16 16 8 15 14 9 7
-14 19 9 17 17 11 8
-12 22 10 20 19 13 10
-10 26 12 22 23 15 12
-8 33 15 29 28 19 14
-6 44 20 39 38 25 19
-4 65 30 58 56 38 28
x=25.95xa2/(wx(-tb))
x=number of can per tonne,
w= mass of water in one can
tb= brine temp. in Deg. C
a2= area of canin cm sq.

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