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In a refrigerating machine, heat rejected is _________ heat absorbed.
Answer & Solution
Correct Answer:
Option
B
In a refrigerating machine, the heat rejected is less than the heat absorbed. This is due to the basic principle of refrigeration cycles, where heat is absorbed from the refrigerated space (or substance) at a low temperature and rejected to a higher temperature environment.
During the refrigeration cycle, the refrigerant absorbs heat from the evaporator, causing it to evaporate and thus cooling the refrigerated space. This absorbed heat is typically less than the heat rejected by the refrigerant in the condenser, as the heat rejected includes both the heat absorbed from the refrigerated space and the additional heat input required to overcome irreversibilities and losses in the system.
Therefore, the heat rejected is less than the heat absorbed in a refrigerating machine, making Option B: Less than the correct choice.
During the refrigeration cycle, the refrigerant absorbs heat from the evaporator, causing it to evaporate and thus cooling the refrigerated space. This absorbed heat is typically less than the heat rejected by the refrigerant in the condenser, as the heat rejected includes both the heat absorbed from the refrigerated space and the additional heat input required to overcome irreversibilities and losses in the system.
Therefore, the heat rejected is less than the heat absorbed in a refrigerating machine, making Option B: Less than the correct choice.
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LoginHeat rejected is equal to sum of refrigeration effect and work input
Work input is always less than refrigeration effect in case of VCR
Always condenser heat rejected more then the evaporator heat is absorbed .