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In aqua- ammonia absorption refrigeration system, the temperature to be maintained in the refrigerator is −5C and the ambient temperature is 27C. If the actual COP is 50% af the maximum COP and the heat supply to generator is 120KW at 110C, then the refrigeration load is
  • a)
    108 KW
  • b)
    133.33 KW
  • c)
    150 KW
  • d)
    240 KW
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
In aqua- ammonia absorption refrigeration system, the temperature to b...
given, QG = 120KW
Generator temperature, T1 = 110C + 273 = 383K
Condenser and absorber temperature, T2 = 27 + 273 = 300K Evaporator temperature,
TR = -5°C + 273 = 268K
(COP)max = product of ideal COP of a refrigerator warking between TR and T2 and ideal thermal efficiency of an engine working between T1 and T2
= 1.81
(COP)actual = 0.5 X 1.81 = 0.9
Refrigeration load, QE = 108KW
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In aqua- ammonia absorption refrigeration system, the temperature to be maintained in the refrigerator is −5C and the ambient temperature is 27C. If the actual COP is 50% af the maximum COP and the heat supply to generator is 120KW at 110C, then the refrigeration load isa)108 KWb)133.33 KWc)150 KWd)240 KWCorrect answer is option 'A'. Can you explain this answer?
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