Abstract
Abstract >> This paper presents the analytical results of the thermodynamic performance characteristics for a cogeneration system using regenerative organic Rankine cycle (ORC) driven by low-grade heat source. The combined heat and power cogeneration system consists of a regenerative superheated ORC and an additional process heater in a series circuit. Eight working fluids of R134a, R152a, propane, isobutane, butane, R245fa, R123, andisopentane are considered for the analysis. Special attention is paid to the effect of turbine inlet pressure on thesystem performance such as thermal input, net power and useful heat productions, electrical, thermal, and systemefficiencies. The results show a significant effect of the turbine inlet pressure and selection of working fluid onthe thermodynamic performance of the system.Key words : ORC(유기랭킨사이클), Combined heat and power(CHP, 열병합발전), Series circuit(직렬연결), Working fluid(작동유체), Thermodynamic performance(열역학적 성능) † Corresponding author : manhoe.kim@knu.ac.kr
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