Inderscience Publishers

A novel cogeneration cycle based on a recompression supercritical carbon dioxide cycle for waste heat recovery in nuclear power plants

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Courtesy of Inderscience Publishers

In this study, a novel cogeneration cycle based on the recompression S–CO
2
Brayton cycle is proposed, analysed and optimised thermodynamically to utilise the waste heat from a nuclear power plant. The cycle was constructed theoretically on the basis of a transcritical CO
2
power cycle and a LiBr/H
2
O Absorption Heat Transformer (AHT) to enhance the overall performance of the cycle. It was found that both the energy and exergy efficiencies of the new S–CO
2
cycle are about 5.526% higher than that of the simple S–CO
2
cycle. A maximum pure water flow rate of 3.317 kg/s was obtained under the analysed condition for the new S–CO
2
cycle.

Keywords: supercritical CO2 cycle, recompression S–CO2 cycle, transcritical CO2 cycle, Brayton cycle, exergy, AHT, absorption heat transformers, carbon dioxide, cogeneration cycle, waste heat recovery, nuclear power plants, NPP, nuclear energy, water flow rate

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