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Internal heat exchange, expanders and intercooling in transcritical CO2 cycles.
Author(s) : BULLARD C.
Summary
This paper quantifies thermodynamic tradeoffs among three strategies for increasing efficiency of the standard transcritical CO2 cycle. It extends earlier work on internal heat exchange (IHX), expanders and multistage compression with intercooling, which analyzed each technology individually or in pairs. Realistic estimates of achievable efficiencies are obtained by using performance data from state of the art components to constrain the thermodynamic cycle. Hardware configurations are also addressed, such as bypassing the IHX during some operating conditions encountered in reversible heat pump systems, in order to protect lubricants from excessively high discharge temperatures.
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Pages: 2004-2
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Details
- Original title: Internal heat exchange, expanders and intercooling in transcritical CO2 cycles.
- Record ID : 2005-2461
- Languages: English
- Source: Natural Working Fluids 2004: 6th IIR-Gustav Lorentzen Conference
- Publication date: 2004/08/01
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