Off-design operation of ORC and CO<sub>2</sub> power production cycles for low temperature surplus heat recovery
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<sub>2</sub> 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<sub>2</sub> 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<sub>2</sub> cycle also seem to have a marginally better response without control of the process. Copyright , Oxford University Press.
Year of publication: |
2011
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Authors: | Walnum, Harald Taxt ; Ladam, Yves ; NeksÄ, Petter ; Andresen, Trond |
Published in: |
International Journal of Low-Carbon Technologies. - Oxford University Press, ISSN 1748-1317. - Vol. 6.2011, 2, p. 134-140
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Publisher: |
Oxford University Press |
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