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A vapour absorption refrigeration system is a heat pump with three thermal reservoirs as shown in the figure. A refrigeration effect of 100 W is required at 250 K when the heat source available is at 400 K. Heat rejection occurs at 300 K. The minimum value of heat required (in W) is
  • a)
    167
  • b)
    100
  • c)
    80
  • d)
    20
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A vapour absorption refrigeration system is a heat pump with three the...
From question, since refrigeration effect of 100 W is required
So, 

Now for this amount of work, heat is absorbed fromreservoir 3 and rejected to sink 2.

⇒ Q3 =4W = 4 x 20 W = 80 W
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Most Upvoted Answer
A vapour absorption refrigeration system is a heat pump with three the...
From question, since refrigeration effect of 100 W is required
So, 

Now for this amount of work, heat is absorbed fromreservoir 3 and rejected to sink 2.

⇒ Q3 =4W = 4 x 20 W = 80 W
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A vapour absorption refrigeration system is a heat pump with three thermal reservoirs as shown in the figure. A refrigeration effect of 100 W is required at 250 K when the heat source available is at 400 K. Heat rejection occurs at 300 K. The minimum value of heat required (in W) isa)167b)100c)80d)20Correct answer is option 'C'. Can you explain this answer?
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