A comparative study of combined cycles for concentrated solar power for efficient power generation using low Global Warming Potential (GWP) fluids to reduce environmental effects

Abstract

A comparative analysis of a combined system comprising organic Rankine cycles (ORC) and supercritical CO2 (sCO2) cycles for concentrated solar power (CSP) applications was performed in the article. Low global warming potential (GWP) fluids were used to investigate strategies for reducing the effects on global warming. In the current study, four different combinations of the sCO2 cycles and ORC, including basic recuperated, pre‐compression, recompression with main compressor intercooling, and partial cooling, were taken into consideration, and their performances with regard to CSP application were compared. The integrated recompression with main compressor intercooling and ORC arrangement was seen to operate thermodynamically more efficient than the other considered configurations. This configuration's highest thermal and exergy efficiencies were discovered to be 51.9% and 55.84%, respectively, and R1243zf was found to be the best‐performing fluid among other considered low GWP fluids to reduce the environmental effects.

Thermodynamic assessment of a novel solar powered trigeneration system for combined power generation, heating, and cooling

“…Due to its high density, sCO 2 may be used to fabricate incredibly compact turbo machinery, which makes it appealing for uses including recovering of waste heat in automobiles. 6 The solar based trigeneration system is the popular technology for providing combined cooling, heating and power (CCHP). There are various studies were performed in this regards such as Saini et al 7 proposed the trigeneration system in which they developed CCHP system driven by evacuated solar collector.…”

Sustainable Power Generation Through Solar‐Driven Integration of Brayton and Transcritical CO2 Cycles: A Comprehensive 3E (Energy, Exergy, and Exergoenvironmental) Evaluation

“…The tCO 2 performed better than ORC in terms of the comparable thermodynamic mean heat rejection temperature. [17] The previous works were performed by Khan et al [13] where they considered recuperated HBC and tCO 2 cycle and Khan et al [27] where they used combined pre-compression sCO 2 cycle and ORC and different SPT systems with molten salt as HTF. However, the present study deals with new configuration pre-compression HBC and tCO 2 combined cycle for SPT (air as HTF) utilization.…”

“…[ 13 ] where they considered recuperated HBC and tCO 2 cycle and Khan et al. [ 27 ] where they used combined pre‐compression sCO 2 cycle and ORC and different SPT systems with molten salt as HTF. However, the present study deals with new configuration pre‐compression HBC and tCO 2 combined cycle for SPT (air as HTF) utilization.…”