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A pistoncylinder device contains 8 kg of refrigerant- 134a
Chapter 8, Problem 829(choose chapter or problem)
A pistoncylinder device contains 8 kg of refrigerant- 134a at 0.7 MPa and 608C. The refrigerant is now cooled at constant pressure until it exists as a liquid at 208C. If the surroundings are at 100 kPa and 208C, determine (a) the exergy of the refrigerant at the initial and the final states and (b) the exergy destroyed during this process
Questions & Answers
QUESTION:
A pistoncylinder device contains 8 kg of refrigerant- 134a at 0.7 MPa and 608C. The refrigerant is now cooled at constant pressure until it exists as a liquid at 208C. If the surroundings are at 100 kPa and 208C, determine (a) the exergy of the refrigerant at the initial and the final states and (b) the exergy destroyed during this process
ANSWER:Step 1 of 6
A cylinder is initially filled with R-134a at a specified state. The refrigerant is cooled and condensed at constant pressure. The exergy of the refrigerant at the initial and final states, and the exergy destroyed during this process are to be determined.
The kinetic and potential energies are negligible.