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

Harald Taxt Walnum, Daniel Rohde and Yves Ladam

International Journal of Low-Carbon Technologies, 2011, vol. 8, issue 1, 29-36

Abstract: Electricity production with an organic Rankine cycle and a transcritical Rankine cycle is investigated in this paper with R-123 and CO 2 as working fluids, respectively. The analysis focuses on the off-design behavior with different control strategies to show some of the occurring difficulties. It was found that both cycles need an advanced control strategy to avoid non-feasible operation (R-123) or significant losses in work output (CO 2 ). A challenge for the advanced control is the required large change in expander speed, which can lead to compatibility problems with the grid. Copyright , Oxford University Press.

Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:oup:ijlctc:v:8:y:2011:i:1:p:29-36

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