CAJ | 학술논문

提出了一种使用非共沸混合工质的内置热泵的有机朗肯循环冷、热、电联供系统.与前人提出的纯工质系统不同,该系统将工质的冷凝过程分为高温段和低温段.在高温冷凝器后,将气、液两态的工质分离,使接下来的2种流程中的工质浓度产生差异.在热、电联供和冷、热、电联供2种运行模式下,分别计算不同引射系数时该系统(使用混合工质R245fa/R134a,75:25)和纯工质系统(分别使用 R245fa 和R134a)的发电效率、性能系数、(火用)效率、经济热效率和制冷热效率,并将2种系统进行对比.混合工质系统在2种运行模式下的性能系数分别达到了1.35和1.39,明显高于纯工质系统.
제출료일충사용비공비혼합공질적내치열빙적유궤랑긍순배랭、열、전련공계통.여전인제출적순공질계통불동,해계통장공질적냉응과정분위고온단화저온단.재고온냉응기후,장기、액량태적공질분리,사접하래적2충류정중적공질농도산생차이.재열、전련공화랭、열、전련공2충운행모식하,분별계산불동인사계수시해계통(사용혼합공질R245fa/R134a,75:25)화순공질계통(분별사용 R245fa 화R134a)적발전효솔、성능계수、(화용)효솔、경제열효솔화제랭열효솔,병장2충계통진행대비.혼합공질계통재2충운행모식하적성능계수분별체도료1.35화1.39,명현고우순공질계통.
A combined cooling heat and power-organic Rankine cycle (CCHP-ORC) system installed with a heat pump using zeotropic mixtures was presented. Unlike the system using pure working fluids previousy proposed, the condensation process was divided into high and low temperatures in this system. Theseparation of gas and liquid working fluids made the concentration of working fluids different in two kinds of following process. In combined heating and power(CHP) or combined cooling heating and power(CCHP) modes, the power generation efficiency, coefficient of performance(COP), exergy efficiency, economic thermal efficiency and refrigeration efficiency of different ejector coefficients were calculated and the system using mixture R245fa/R134a (75:25) was compared with system using pure working fluids R245fa or R134a. In two modes, thecoefficient of performance of the system reach 1.35 and 1.39 respectively, higher than the system previously proposed obviously.