In recent times, there is an upsurge in research on renewable energy based combined cooling, heating and power (CCHP) using natural working fluids such as NH3, CO2 etc. Supercritical carbon dioxide (S-CO2), when compared to other working fluids, offers some unique properties like low critical temperature (31.1 °C), non-toxicity, non-flammability, zero ODP and a GWP of 1. Hence it is found to be a promising working fluid for advanced power and cooling cycles. This paper presents a comparative study between two solar assisted CCHP systems, one operating with a throttle valve, and other operating with an expansion turbine. Based on the comparison, it is observed that the cooling user output and electrical power output improve by using an expansion turbine while the heating user output remains the same for both the configurations.
INAE Letters – Springer Journals
Published: May 29, 2018
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