Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion
Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 3 (Q.No. 35)
35.
The super-heating in a refrigeration cycle
Discussion:
16 comments Page 1 of 2.
Veniston James said:
7 years ago
In practically, if superheat temp is 5- 6 ° cel then cooling effect will increase and compressor work needs more compare than increase Colling effect. So COP reduces.
If the degree of superheat less than 5 then work input negligible. So cop increases.
If the degree of superheat less than 5 then work input negligible. So cop increases.
Ajitesh Sethi said:
8 years ago
D is the right answer as refrigeration effect is increasing as well as work input (because it is the function of inlet temperature to the compressor). Also it increases or decreases depending upon refrigerant.
Ashish mali said:
7 years ago
Due to the superheating refrigerating effect (R.E) increases and also work done in the compressor increases. But R.E. is less compared to w/D so the net effect is to have decreased in cop.
Nikhilesh said:
10 years ago
If Super heating or sub cooling or both increases in refrigeration system then refrigerating effect get increases and vice versa and COP = R.E/W.
So super heating increases COP.
So super heating increases COP.
Swapnil Shelke said:
5 years ago
D because it depends on refrigerant.
In some cases, it increases and some cases decrease.
In some cases, it increases and some cases decrease.
Anup chauhan said:
9 years ago
The answer is d.
Because for R12 refrigerant it increase but for ammonia, it decreases.
Because for R12 refrigerant it increase but for ammonia, it decreases.
Aditya said:
10 years ago
Depends on the refrigerant for r-12 it will increase and for ammonia it will decrease.
Dipak Khade said:
9 years ago
Depends on the refrigerant for r-12 it will increase and for ammonia it will decrease.
Seraj khan said:
8 years ago
Depends on the refrigerant for r-12 it will increase and for ammonia it will decrease.
Shibunath said:
7 years ago
It may increase or decrease depends upon range of pressure and degree of superheating.
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