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"Wynand Groenewald" "A Techno-Economical Analysis of a C02 Heat Pump" "Final program" 'This program contains the coefficients that were attained and is used to compare our results to the results from the compressor charts" "Compressor chart used was attained from DORIN innovation- compressor =: TCS362-D" "Fluid is R744(C02)" "S. Inlet to Evaporator" {PJS] =: 4S00 [kPaJ} {TJS] := 283 [K]} {Q3 = 36.S [kW]} h_[S] =: h_[4] x_[S] =Quality(R744,h=:h_[S],P=:P_[S]) {cpJS]=Cp(R744,T=TJS],P=PJS])} s_[5]=Entropy(R744,x=x_[5], P=P_[5]) "6. Outlet evaporator" P_[6] =PJS] P_[7] = PJ5] TJ6] = TJ5] T_[7] =T_[6] +10 U6]= 1 h_[6]=Enthalpy(R744,x=x_[6],P=P_[6]) hJ7j=Enthalpy(R744,T=:T_[7],P:::PJ7]) Q 3 = m_dot_g * (hJ7]-hJ5]) s_[6]=Entropy(R744,x=x_[6],P=P_[6]) sJ7j=Entropy(R744,T=TJ7],P=P_[7]) lip sue" liT':::evaporation" "Cooling capacity" "Constant enthalpy over expansion device" "2-phase" "Evaporation takes place at constant pressure" "in consideration for adding superheat" "Superheat added" "Gas" "8. Outlet Internal heat exchanger suction side" PJ8]=P_[7] (hJ8]-hJ7]) (hJ3]-hJ4]) TJ8]=Temperature(R744,h=hJ8],P=PJ8]) sJ8]=Entropy(R744,T=TJ8],P=PJ8]) T_[4] :::; TJ3]-0 "no heat exchange is added through the internal heat exchanger" P_[4] =PJ3] h_[4]=Enthalpy(R744,T=T_[4],P=P_[4]) s_[4]=Entropy(R744,T=T_[4], P=P_[4]) "1. Inlet compressor" "2. Outlet compressor and inlet gas cooler" {P_[2] 12000 [kPa]} {Q_p ::: 17.9 [kW]} {eta_c::: 0.9} Q_h Q_e+ QJ) COP = Q_hfPJ) QJ) = m_doCg * (hJ2]-h_[1]) PJ) =QJ)*1.05 "Discharge pressure" "Compressor work" A Techno-Economical Analysis of a CO2 Heat Pump. School ofMechanical Engineering, North-West UniversityPDF Image | CO2 HEAT PUMP Analysis
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