In a Carnot-cycle heat pump, heat is rejected from R-22 at 40¬¨¬®‚Äö√†√ªC, during which the R-22 changes from saturated vapor to saturated liquid. The heat is transferred to the R-22 at 0¬¨¬®‚Äö√†√ªC. Determine the COP for the cycle.$

In a Carnot-cycle heat pump, heat is rejected from R-22 at 40¬¨¬®�

1.	In a Carnot-cycle heat pump, heat is rejected from R-22 at 40¬¨¬®‚Äö√†√ªC, during which the R-22 changes from saturated vapor to saturated liquid. The heat is transferred to the R-22 at 0¬¨¬®‚Äö√†√ªC. Determine the COP for the cycle.$
A.	6.83
B.	7.83
C.	8.83
D.	9.83
Answer» C. 8.83

Discussion

No Comment Found

Related MCQs

A_PISTON/CYLINDER_HAS_2KG_AMMONIA_AT_100_KPA,_50¬¨¬®‚ÄÖ√†√ªC_WHICH_IS_COMPRESSED_TO_1000_KPA._THE_TEMPERATURE_IS_ASSUMED_TO_BE_CONSTANT._FIND_THE_WORK_FOR_THE_PROCESS_ASSUMING_IT_TO_BE_REVERSIBLE.?$#
1KG_OF_WATER_AT_300¬¨¬®‚ÄÖ√†√ªC_EXPANDS_AGAINST_A_PISTON_IN_A_CYLINDER_UNTIL_IT_REACHES_100_KPA,_AT_WHICH_POINT_THE_WATER_HAS_A_QUALITY_OF_90.2%._THE_EXPANSION_IS_REVERSIBLE_AND_ADIABATIC._HOW_MUCH_WORK_IS_DONE_BY_THE_WATER??$#
A cylinder containing R-134a at 150 kPa, 10¬¨¬®‚Äö√†√ªC has an initial volume of 20 L. A piston compresses the R-134a in a isothermal, reversible process until it reaches the saturated vapour state. Calculate the required work in the process.$#
A piston cylinder has R-134a at 100 kPa, ‚Äö√Ñ√∂‚àö√ë‚àö¬®20¬¨¬®‚Äö√†√ªC which is compressed to 500 kPa in a reversible adiabatic process. Find the specific work.$#
Water at 250¬¨¬®‚Äö√†√ªC, 1000 kPa is brought to saturated vapour in a rigid container. Find the specific heat transfer in this isometric process.$
Water at 250¬¨¬®‚Äö√†√ªC, 1000 kPa is brought to saturated vapour in a piston/cylinder with an isothermal process. Find the specific work.$
A piston/cylinder has 2kg water at 250¬¨¬®‚Äö√†√ªC, 1000 kPa which is now cooled with a constant load on the piston. This isobaric process ends when the water has reached a state of saturated liquid. Find the work.$
Compression and heat transfer brings R-134a from 50¬¨¬®‚Äö√†√ªC, 500 kPa to saturated vapour in an isothermal process. Find the specific work?#
An insulated cylinder fitted with a piston contains 0.1 kg of water at 100¬¨¬®‚Äö√†√ªC and 90% quality. The piston is moved, compressing the water till it reaches a pressure of 1.2 MPa. How much work is required in the process?$
A cylinder-piston contains ammonia at 50¬¨¬®‚Äö√†√ªC, 20% quality, volume being 1 L. The ammonia expands slowly, and heat is transferred to maintain a constant temperature. The process continues until all liquid is gone. Determine the work for this process.$

In a Carnot-cycle heat pump, heat is rejected from R-22 at 40¬¨¬®‚Äö√†√ªC, during which the R-22 changes from saturated vapor to saturated liquid. The heat is transferred to the R-22 at 0¬¨¬®‚Äö√†√ªC. Determine the COP for the cycle.$

Discussion

No Comment Found

Related MCQs

Reply to Comment