使用附加热交换器的小型有机朗肯循环性能

Q2 Environmental Science

Evergreen Pub Date : 2023-09-01 DOI:10.5109/7151720

Dwika Budianto, Budi Ismoyo, None Cahyadi, Euis Djubaedah, Arnas Lubis, None M. Idrus Alhamid

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Small-Scale Organic Rankine Cycle Performance Using an Additional Heat Exchanger

: The Organic Rankine Cycle (ORC) power generation system is a unique approach to heat recovery which substitutes an organic fluid with a low boiling point for water. To improve its lower thermal efficiency and maximum power generation, an Internal Heat Exchanger (IHE) is proposed after the expansion scroll expander. Using a small-scale scroll expander ORC testing facility as the simulation model, this study analyzes the net thermal efficiency and energy consumption of the ORC system with and without the IHE under conditions of equivalent power output. While the working fluid's outlet temperature in the evaporator was adjusted from 70 to 130 degrees Celsius, the outlet condenser temperature was kept constant at 55, 60, and 65 degrees Celsius. In the numerical simulation of the small-scale ORC, five distinct working fluids, including R245fa, R123, R1233zd, n-Pentane, and R141b were assessed. The results indicated that R245fa had the largest recuperation effect on the working fluid, followed by n-Pentane, R1233zd, R123, and R141b, with a total thermal energy reduction of 3.34 kW, 2.63 kW, 2.06 kW, 1.9 kW, and 0.92 kW, respectively. In conclusion, the installation of IHE in ORC units leads to improved thermal

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来源期刊

Evergreen Environmental Science-Management, Monitoring, Policy and Law

CiteScore

4.30

自引率

0.00%

发文量

期刊介绍： “Evergreen - Joint Journal of Novel Carbon Resource Sciences & Green Asia Strategy” is a refereed international open access online journal, serving researchers in academic and research organizations and all practitioners in the science and technology to contribute to the realization of Green Asia where ecology and economic growth coexist. The scope of the journal involves the aspects of science, technology, economic and social science. Namely, Novel Carbon Resource Sciences, Green Asia Strategy, and other fields related to Asian environment should be included in this journal. The journal aims to contribute to resolve or mitigate the global and local problems in Asia by bringing together new ideas and developments. The editors welcome good quality contributions from all over the Asia.