Thermodynamic Analysis of Combined ORC-VCR System Using Low Grade Thermal Energy
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 7
Abstract
The world is facing energy and environmental challenges due to population growth and economy development. The utilization of renewable energy can significantly contribute to reduction in consumption of conventional energy and environmental pollution. Low grade thermal energy can be utilized in organic Rankine cycle driven vapour compression refrigeration system (combined ORC-VCR) to produce refrigeration effect. Low grade renewable energy can be obtain from the source such as solar, geothermal and waste heat of industries. This work deals with thermodynamic analysis of combined ORCVCR system with low GWP working fluids. In this paper four hydrocarbons; butane (R600), iso-butane (R600a), propane (R290) and propylene (R1270) are used as a working fluid to analyze the effect of various operating parameters of combined organic Rankine cycle drive vapour compression refrigeration system and evaluated to find the best candidate for the system. It is found that the butane (R600) gives the highest overall COP of combined system as the boiler exit temperature is between 60 to 90 0C, the condenser temperature 30 to 55 0C and evaporator temperature range -15 to 15 0C. At boiler exit temperature 90 0C, the butane (R600) gives maximum overall system COP is 0.4696.
Authors and Affiliations
K. S. Rawat, H. khulve, A. K. Pratihar
Keywords
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