Topic
Subcooling
About: Subcooling is a research topic. Over the lifetime, 6150 publications have been published within this topic receiving 99125 citations.
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TL;DR: In this article, the authors analyzed the critical heat flux (CHF) phenomenon under uniform and one-side heating conditions for a high performance cooling device with pressurized subcooled water flow under one side heating conditions.
50 citations
TL;DR: In this article, the behavior of multichannel system two-phase flow instability is studied theoretically, and a physics model that includes the entrance section, heater section and riser section is built.
50 citations
TL;DR: Theoretical analyses of subcritical/transcritical heat pumps using four natural refrigerants, carbon dioxide, ammonia, propane and isobutane have been carried out for high temperature heating applications at different heating outlet temperatures and heat sources using computer models.
Abstract: Theoretical analyses of subcritical/transcritical heat pumps using four natural refrigerants, carbon dioxide, ammonia, propane and isobutane have been carried out for high temperature heating applications at different heating outlet temperatures and heat sources using computer models. The compressor discharge pressures have been optimized for transcritical and subcritical (with near critical operation of condenser) cycles. Results show that for subcritical heat pumps, use of subcooling is efficient for heating applications with a gliding temperature. Results also show that although propane yields better coefficient of performance (COP) in low temperature heating applications, ammonia performs the best in high temperature heating applications. Finally, design aspects of major components of all the four heat pumps for high temperature heating have been discussed, particularly with reference to suitability of available lubricants to the newly evolved operating conditions.
50 citations
TL;DR: In this article, a small-sized auto-cascade refrigeration cycle using CO 2 /propane as the refrigerant was proposed, and the effect of FHEX on the performance of the cycle was analyzed.
50 citations
TL;DR: In this article, an experimental evaluation of a heat-sink based on flow boiling of R134a inside micro-scale channels was performed, and the average heat transfer coefficient increases when the mass velocity increases.
50 citations