Abstract:HFOs refrigerant R1234ze(E) has been widely applied in supercritical heat pump system and supercritical Organic Rankine Cycle (ORC) in recent years due to zero ODP and extremely low GWP. In this paper, experimental research on the cooling heat transfer performances of supercritical HFO-1234ze(E) in horizontal helically coiled tube (HCT) is performed. The impacts of mass flux (G) and pressure (P) on the heat transfer coefficient (h), the relative proportion of gravitational buoyancy effect and centrifugal buoya… Show more
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