PDF Publication Title:
Text from PDF Page: 070
CHAPTER 3: PUMP SIMULATION MODEL 58 -_ • • • • • • • • • • • • .... _-------- The refrigerant leaving the evaporator is assumed to be a gas at all times. The enthalpy of the refrigerant after it has left the evaporator is determined in terms of the outlet temperature and the suction pressure. Since the cooling capacity is known and the enthalpy is calculated before and after the evaporator the mass flow of the refrigerant can be calculated with the following formula: [3.1] The entropy of the refrigerant after the evaporator is calculated in terms of the temperature of the refrigerant after the evaporator and the suction pressure. (1) The temperature, pressure, entropy and enthalpy entering the compressor are now known. (2) The discharge pressure and compressor power are given in the compressor chart of Table 3.1. With the compressor power known and the mass flow of the refrigerant already calculated, the enthalpy exiting the compressor can be calculated with the following formula: [3.2] The isentropic enthalpy of the refrigerant after the compressor can be calculated in terms of the discharge pressure and the entropy entering the compressor. With the isentropic enthalpy and the enthalpy leaving the compressor known, the compressor effiCiency can be calculated as follows: eta c=hs2 ~ ~~ [3.3] The compressor efficiency is known and with the compressor power known the heating capacity can be calculated: Q_h = Q e+Q_p·eta_c [3.4] From all the known factors, the heating coefficient of performance (COP) of the system can now be calculated with the following formula: COP = Qp [3.5] (3) The gas cooler outlet temperature is known from the compressor chart and a constant pressure over the gas cooler is assumed. A Techno-Economical Analysis of a COl Heat Pump. School ofMechanical Engineering, North-West UniversityPDF Image | CO2 HEAT PUMP Analysis
PDF Search Title:
CO2 HEAT PUMP AnalysisOriginal File Name Searched:
co2-heat-pump-techno-analysis.pdfDIY PDF Search: Google It | Yahoo | Bing
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
Heat Pumps CO2 ORC Heat Pump System Platform More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)