Dual fluid trigeneration combined organic Rankine-compound ejector-multi evaporator vapour compression system

• ORC and compound ejector-multi evaporator vapour compression systems are combined. Nine ultra-low global warming potential refrigerant pairs proposed to replace R134a R245fa. Condenser waste heat recovery increases the overall coefficient of performance. The pair R1234ze(Z)/R1234ze(E) results in highest energy This article evaluates exergy performance a novel dual fluid combined organic Rankine-compound ejector multi evaporators system (ORCEMES) for power, cooling heating purposes. Six working fluids with potential: R1234ze(E), R1243zf, R1234yf CEMES R1234ze(Z), R1336mzz(Z) R1224yd(Z) were selected, resulting nine combinations. can work two operating modes: power-cooling power-heating modes. combination R1234ze(Z) R1234ze(E) power generation from 21% 75% at high geothermal low temperatures, respectively, compared separated basic multi-evaporator same conditions capacity. reduces compressor consumption 85% system, increasing COP remarkably. Concerning analysis, low-temperature recapture exchanger shows destruction rest components, followed by turbine. Besides, second expansion valve presents lowest percentage.