Saturated vapor R-134a leaves the evaporator Saturated vapor R-134a leaves the evaporator in a heat pump system at 10째C, with a steady mass flow rate of 0.1 kg/s. What is the smallest diameter tubing that can be used at this location if the velocity of the refrigerant is not to exceed 7 m/s? Is this […]
Read More »Repeat Prob. 11–15 assuming an isentropic Repeat Prob. 11â15 assuming an isentropic efficiency of 85 percent for the compressor. Also, determine the rate of energy destruction associated with the compression process in this case. Take T0 = 298 K. Is this the question you were looking for? If so, place your order here to get […]
Read More »Saturated vapor water at 150oC is expanded to a lower pressure with constant temperature. Find the changes in u and s when the final pressure is a. 100 kPa b. 50 kPa c. 10 kPa Saturated vapor water at 150oC is expanded to a lower pressure with constant temperature. Find the changes in u and […]
Read More »Saturated vapor R-22 enters an insulated compressor with an Saturated vapor R-22 enters an insulated compressor with an isentropic efficiency of 75% and the R-22 exits at 3.5 MPa, 120ď°C, find the compressor inlet temperature by trial and error. Is this the question you were looking for? If so, place your order here to get […]
Read More »Saturated vapor R-134a leaves Saturated vapor R-134a leaves the evaporator in a heat pump system at 10째C, with a steady mass flow rate of 0.1 kg/s. What is the smallest diameter tubing that can be used at this location if the velocity of the refrigerant is not to exceed 7 m/s?A hot air home heating […]
Read More »Saturated vapor R-134a at 50oC changes Saturated vapor R-134a at 50oC changes volume at constant temperature. Find the new pressure, and quality if saturated, if the volume doubles. Repeat the question for the case the volume is reduced to half the original volume. Is this the question you were looking for? If so, place your […]
Read More »Saturated liquid butane enters an insulated constant pressure Saturated liquid butane enters an insulated constant pressure combustion chamber at 25?C, and x times theoretical oxygen gas enters at the same P and T. The combustion products exit at 3400 K. With complete combustion find x what is the pressure at the chamber exit? And what […]
Read More »Saturated steam coming off the turbine Saturated steam coming off the turbine of a steam power plant at 30째C condenses on the outside of a 3-cmouter- diameter, 35-m-long tube at a rate of 45 kg/h. Determine the rate of heat transfer from the steam to the cooling water flowing through the pipe. Is this the […]
Read More »Refrigerant-134a is compressed by a compressor Refrigerant-134a is compressed by a compressor from the saturated vapor state at 0.14 MPa to 1.2 MPa and 70째C at a rate of 0.108 kg/s. The refrigerant is cooled at a rate of 1.10 kJ/s during compression. The power input to the compressor is (a) 5.54 kW (d) 7.74 […]
Read More »Rooms with floor areas of up to 15-m 2 are cooled adequately by window air Rooms with floor areas of up to 15-m2Â are cooled adequately by window air conditioners whose cooling capacity is 5000 Btu/h. Assuming the COP of the air conditioner to be 3.5, determine the rate of heat gain of the room, in […]
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