Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning
Exercise : Heat Transfer, Refrigeration and Air Conditioning - Section 3
- Heat Transfer, Refrigeration and Air Conditioning - Section 1
- Heat Transfer, Refrigeration and Air Conditioning - Section 2
- Heat Transfer, Refrigeration and Air Conditioning - Section 3
- Heat Transfer, Refrigeration and Air Conditioning - Section 4
- Heat Transfer, Refrigeration and Air Conditioning - Section 5
- Heat Transfer, Refrigeration and Air Conditioning - Section 6
- Heat Transfer, Refrigeration and Air Conditioning - Section 7
- Heat Transfer, Refrigeration and Air Conditioning - Section 8
1.
Which of the following refrigerant has the maximum ozone depletion potential in the stratophere?
2.
Which of the following statement is correct?
3.
According to Stefan's law, the total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature.
4.
In electrolux refrigerator
5.
Two long parallel surfaces each of emissivity 0.7 are maintained at different temperatures and accordingly have radiation heat exchange between them. It is desired to reduce 75% of the radiant heat transfer by inserting thin parallel shields of emissivity 1 on both sides. The number of shields should be
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