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"Two phase evaporation stage, between T1 and T1.5" {--------------------------------------------------------------} delta_evap_in= T_brine_0.5-T_evap delta_evap_out=T_brine_out-T_evap (delta_evap_in/delta_evap_out)=exp((delta_evap_in-delta_evap_out)/LMTD_evap) Q_dot_evap=m_dot_ref*(h_1.5-h_1) Q_dot_evap=m_dot_brine*cp_brine*delta_T_brine_evap Q_dot_evap=UA_evap*LMTD_evap "Single phase superheating stage, from T1.5 to T2" {-----------------------------------------------------------------} delta_sup_in= T_brine_in-T_2 (delta_sup_in/delta_evap_in)=exp((delta_sup_in-delta_evap_in)/LMTD_sup) Q_dot_sup=m_dot_ref*(h_2-h_1.5) Q_dot_sup=m_dot_brine*cp_brine*delta_T_brine_sup Q_dot_sup=UA_sup*LMTD_sup Q_dot_2=Q_dot_evap+Q_dot_sup {Cooling capacity} COP_2= Q_dot_2/E_dot_comp "Condenser" {--------------------------------------------------------------------------------------------------------------------} UA_des=-2.6208+2.4611*m_dot_ref+287997*mu_3.35-0.0372*T_cond UA_cond=124.1568724-1092.001679*k_3.7-0.791741052*T_cond-69.6615*m_dot_ref UA_sub=-450.716+2941.455*k_3.7-1005.03*k_4+0.026945*P_cond+ 705593.4*mu_4+ 0.105813*Rho_3.7+1.520151*T_cond-30.3314*m_dot_ref "Single phase desuperheating stage, from T3 to T3.35" {------------------------------------------------------------} delta_des_in=T_cond-T_water_0.35 delta_des_out= T_3-T_water_out (delta_des_in/delta_des_out)=exp((delta_des_in-delta_des_out)/LMTD_des) Q_dot_des=m_dot_water*cp_water*delta_T_water_des Q_dot_des=UA_des*LMTD_des {Two phase condensation stage from T3.35 to T3.7} {----------------------------------------------------------------} delta_cond_in=T_cond-T_water_0.7 (delta_cond_in/delta_des_in)=exp((delta_cond_in-delta_des_in)/LMTD_cond) -v-PDF Image | Next generation of refrigerants for residential heat pump systems
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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