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http://dx.doi.org/10.7316/KHNES.2016.27.5.597

Comparative Thermodynamic Analysis of Organic Rankine Cycle and Ammonia-Water Rankine Cycle  

KIM, KYOUNG HOON (Department of Mechanical Engineering, Kumoh National Institute of Technology)
KIM, MAN-HOE (School of Mechanical Engineering, Kyungpook National University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.27, no.5, 2016 , pp. 597-603 More about this Journal
Abstract
In this paper a comparative thermodynamics analysis is carried out for organic Rankine cycle (ORC) and ammonia-water Rankine cycle (AWRC) utilizing low-grade heat sources. Effects of the working fluid, ammonia concentration, and turbine inlet pressure are systematically investigated on the system performance such as mass flow rate, pressure ratio, turbine-exit volume flow, and net power production as well as the thermal efficiency. Results show that ORC with a proper working fluid shows higher thermal efficiency than AWRC, however, AWRC shows lower mass flow rate of working fluid and lower pressure ratio of expander than ORC.
Keywords
Organic Rankine cycle; Ammonia-water Rankine cycle; Low-grade source; Working fluid; Thermal efficiency;
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