PERFORMANCE EVALUATION OF A COMBINED ORGANIC RANKINE CYCLE AND AN ABSORPTION REFRIGERATION SYSTEM

Autor/autori: Andreea MARIN , Adrian UNTEA , Lavinia GROSU (Franta), Alexandru DOBROVICESCU, Diogo QUEIROS-CONDE (Franta)


Abstract: In this paper, exergy analysis is used to assess the exergetic performance of a solar powered Organic Rankine Cycle (ORC) and a LiBr Absorption Refrigeration System. The exergy efficiency and the exergy destruction rates are calculated for the whole combined system. The goal of this research is to highlight that this kind of systems is able to satisfy air-cooling and electrical power need for an existing building. Thus, cogeneration system using solar energy for combined cooling and electrical power in buildings is studied. The simulations for the ORC are performed for different working fluids and show that using R245fa as working fluid in the low-temperature solar Rankine cycle is suitable. For the LiBr absorption refrigeration system the coefficient of performance is calculated, as well as the influence of the inlet temperature in the Generator.

Keywords: Organic Rankine Cycle, Absoption Refrigeration System, solar system, combined cycles, exergy analysis.

 

DOWNLOAD PDF