4.1) There is a real thermal engine that has an absorbed heat (Q1) of 5 kJ, the temperature of the cold sink is -7 °C. The efficiency of the thermal engine is 0.30, the work that cannot be extracted from the engine is 300 J. The machine and its characteristics can be seen in the following figure: T,=? ↓ Q₁=5KJ WR=¿? MT ↓ T₂=-7°C Get: A. Real work of the machine (WR) B. Heat transferred by the machine (Q2) C. Ideal performance of the machine W₁-WR+300J Q2= 6?

4.1) There is a real thermal engine that has an absorbed heat (Q1) of 5 kJ, the temperature of the cold sink is -7 °C. The efficiency of the thermal engine is 0.30, the work that cannot be extracted from the engine is 300 J. The machine and its characteristics can be seen in the following figure: T,=? ↓ Q₁=5KJ WR=¿? MT ↓ T₂=-7°C Get: A. Real work of the machine (WR) B. Heat transferred by the machine (Q2) C. Ideal performance of the machine W₁-WR+300J Q2= 6?

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 2RQ: The operating condition for the single compressor in a household refrigerator is the lowest box...

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The operating condition for the single compressor in a household refrigerator is the lowest box temperature, which is typically A. 0F B. -20F C. 20F D. 40F
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Refrigerator 1 simulates an ideal refrigerator and therefore operates on a Carnot cycle using R-134a as the refrigerant at a flow rate of 1.4 kg/sec. The condensing and evaporating temperatures are 30 °C and -10 °C, respectively. To assess the performance of Refrigerator 1, you must submit the report. of the project with the following information: Enthalpies corresponding to the states indicated in the cycle (1, 2, 3 and 4); 1.a. The cooling rate (QL); 1.b. The work provided to the fluid by the compressor; 1.c. The work generated by the turbine; 1.d. The condenser heat rejection rate (QH); 1e. The coefficient of performance of the cycle;
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