Sunday, August 20th, 2017

Design study of configurations on system COP for a combined ORC (organic Rankine cycle) and VCC (vapor compression cycle)

Publication year: 2011brbSource:/b Energy, In Press, Corrected Proof, Available online 20 June 2011brHailei, Wang , Richard, Peterson , Tom, HerronbrThe study introduced a novel thermally activated cooling concept – a combined cycle couples an ORC (organic Rankine cycle) and a VCC (vapor compression cycle). A brief comparison with other thermally activated cooling technologies was conducted. The cycle can use renewable energy sources such as solar, geothermal and waste heat, to generate cooling and power if needed. A systematic design study was conducted to investigate effects of various cycle configurations on overall cycle COP. With both subcooling and cooling recuperation in the vapor compression cycle, the overall cycle COP reaches 0.66 at extreme military conditions with outdoor temperature of 48.9 °C….br Highlights: ► The article introduces a novel thermally activated cooling concept – a combined cycle couples an ORC (organic Rankine cycle) and a VCC (vapor compression cycle). ► A systematic design study was conducted to investigate effects of a variety of cycle configurations on overall cycle COP. ► The combined cycle with cooling subcooling and recuperation can achieve overall cycle COP of 0.66, which is 22% above the basic cycle. ► The parametric design study identified expander isentropic efficiency, condensing temperature and boiling pressure to be the most critical parameters. ► Two advanced cycle configurations including dual-fluid system were proposed for future studies.


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