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CHAPTER 3: HEA T PUMP SJ:l\1ULATIONMoDEL 85 T_ev 5 (278) 10 (283) The two equations were found to be: COP =3.626+6.925x1 • • Q=47.51+2.131· 5.58x10-2 ·T/ 0.1785·Tw- 0.02479·Ta + [3.25] [3.26] A Techno-Economical Analysis of a CO2 Heat Pump. School of Mechanical Engineering, North-West University T_wi T_9c 278 283 283 288 288 293 293 298 298 303 303 308 ')78 P dis = Q_h 71.38 68.49 65.43 62.14 58.48 10000 P 17.05 17.05 17.05 17.05 17.05 17.05 17.58 16.53 16.53 16.53 16.53 16.53 kPa COP 4.186 4.016 3.837 3.644 3.429 3.178 4.462 4.763 4.537 4.294 4.025 3.71 I 283 288 288 293 293 298 298 303 303 308 78.71 74.99 70.98 66.52 61.32 We now have sufficient data to characterize the system at an operating discharge pressure of 10000kPa. The data attained is read into the EES program shown in Appendix A. The EES program has all the variables that are shown in Table 3.8 in terms of the wet bulb temperature and water inlet temperature. From the results given to the program it can make a profile fit through the equations, determining the coefficients built into the formulas in the program. Once the coefficients are determined they can be replaced within the formula leaving only the ambient wet bulb temperature and the water inlet temperature as the unknown. We now have two formulas, one for determining the COP of the system and one for the determining the heating capacity of the system in terms of ambient wet bulb temperatures and water inlet temperatures. Therefore these two equations can give the systems COP and heating capacity for any wet bulb temperature and any water inlet temperature. 54.2 283 78.46PDF Image | CO2 HEAT PUMP Analysis
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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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