Off-design operation of ORC and CO 2 power production cycles for low temperature surplus heat recovery

Harald Taxt Walnum, Yves Ladam, Petter Nekså and Trond Andresen

International Journal of Low-Carbon Technologies, 2011, vol. 6, issue 2, 134-140

Abstract: In process industry, large amounts of surplus heat are available. Electricity production is an interesting method to recover this energy. This paper focuses on the off-design operation of the Rankine cycles and compares the behaviour of transcritical CO 2 cycles and an organic Rankine cycle (ORC) with R-123 as the working fluid. The simulations show that the ORC is more sensitive than the CO 2 cycle to reduction in available heat, and will with only small changes get droplets in the inlet of the expander. With small increments in the available heat source, the CO 2 cycle also seem to have a marginally better response without control of the process. Copyright , Oxford University Press.

Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:oup:ijlctc:v:6:y:2011:i:2:p:134-140

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