A geothermal heat pump operating at steady state with Refrigerant-22 as the working fluid is shown...

  

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A geothermal heat pump operating at steady state with Refrigerant-22 as the working fluid is shown schematically in figure below. where Qout = 3 tons and T₂ = 90°C. The heat pump uses 12°C water from wells as the thermal source. Operating data are shown on the figure for a day in which the outside air temperature is -10°C. Assume adiabatic operation of the compressor. For the heat pump, determine: (a) the volumetric flow rate of heated air to the house, in m³/s. (b) the isentropic compressor efficiency. (c) the compressor power, in horsepower. (d) the coefficient of performance. (e) the volumetric flow rate of water from the geothermal wells, in L/s. (f) For To = -10°C, perform a full exergy accounting for the system, and devise and evaluate a second law efficiency for the heat pump system. To = -10°C P3 14 bar T₁ = 30°C P4= 4 bar Return air from house 20°C Expansion valve lout www Condenser Heated air to house +45°C Water discharged at 9°C Evaporator www 2+ Condenser P₂ = 14 bar T₂ P₁ = 4 bar T₁ = -1°C Water from geothermal wells enters at 12°C P = 14 bar T3=30°C 4 P4 = 4 bar T2, p2 = 14 bar 2s, P1 = 4 bar T₁=-1°C A geothermal heat pump operating at steady state with Refrigerant-22 as the working fluid is shown schematically in figure below. where Qout = 3 tons and T₂ = 90°C. The heat pump uses 12°C water from wells as the thermal source. Operating data are shown on the figure for a day in which the outside air temperature is -10°C. Assume adiabatic operation of the compressor. For the heat pump, determine: (a) the volumetric flow rate of heated air to the house, in m³/s. (b) the isentropic compressor efficiency. (c) the compressor power, in horsepower. (d) the coefficient of performance. (e) the volumetric flow rate of water from the geothermal wells, in L/s. (f) For To = -10°C, perform a full exergy accounting for the system, and devise and evaluate a second law efficiency for the heat pump system. To = -10°C P3 14 bar T₁ = 30°C P4= 4 bar Return air from house 20°C Expansion valve lout www Condenser Heated air to house +45°C Water discharged at 9°C Evaporator www 2+ Condenser P₂ = 14 bar T₂ P₁ = 4 bar T₁ = -1°C Water from geothermal wells enters at 12°C P = 14 bar T3=30°C 4 P4 = 4 bar T2, p2 = 14 bar 2s, P1 = 4 bar T₁=-1°C