Energy and exergy analysis of compact power generation and hybrid solar energy-waste heat-based triple effect ejector-vapor absorption refrigeration cycle

TLDR: In this paper, an NH3-H2O ejector-absorption refrigeration cycle and an R-152a ejector cooling cycle were employed with a renewable energy power generator to make a proposed compact power generation and triple effect ejectorabsorption cooling cycle.

Abstract: An NH3–H2O ejector-absorption refrigeration cycle, and an R-152a ejector refrigeration cycle are employed with a renewable energy power generator to make a proposed compact power generation and triple effect ejector-absorption refrigeration cycle. The exergy analysis of the cycle leads to a possible performance improvement. Approximately 71.69% of the input exergy is destructed due to irreversibilities in different components. Around 7.976% is available as the useful exergy output. The exhaust exergy lost to the environment is 20.33%, which is lower than the exhaust energy loss of 47.95%, while the useful energy output is 27.88%. The refrigerants used are of zero ODP and negligible GWP, and the CO2 emission of the exhaust gases is very small as compared to that of the fossil fuel run engine, hence, this cycle is favorable to the global environment. The results also show that the proposed cycle has significant higher energy and exergy efficiency than the earlier investigated 'triple effect refrigeration cycle' and 'the combined power and ejector-refrigeration cycle'.