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, a thermodynamic analysis of carbon dioxide-ammonia (R744-R717) cascade refrigeration system is presented to optimize the design and operating parameters of the system.
Abstract: A thermodynamic analysis of carbon dioxide–ammonia (R744–R717) cascade refrigeration system is presented in this paper to optimize the design and operating parameters of the system. The design and operating parameters considered in this study include (1) condensing, subcooling, evaporating and superheating temperatures in the ammonia (R717) high-temperature circuit, (2) temperature difference in the cascade heat exchanger, and (3) evaporating, superheating, condensing and subcooling in the carbon dioxide (R744) low-temperature circuit. A multilinear regression analysis was employed in terms of subcooling, superheating, evaporating, condensing, and cascade heat exchanger temperature difference in order to develop mathematical expressions for maximum COP, an optimum evaporating temperature of R717 and an optimum mass flow ratio of R717 to that of R744 in the cascade system.
165 citations
TL;DR: In this paper, the relationship between subcooling and the true driving force at different conditions for pure gaswater and natural gas-water systems are analyzed. But the authors did not consider the effect of pressure on the induction time in the presence and absence of a kinetic inhibitor.
165 citations
TL;DR: In this article, the static Ledinegg instability in horizontal microchannels under different flow conditions and fluids pertinent to electronics cooling was studied experimentally and numerically, and a parametric instability study was systematically conducted with varying system pressure, heat flux, inlet subcooling, and channel size with and without inlet restrictor.
163 citations
TL;DR: In this paper, the authors obtained ultra-high critical heat flux (CHF) data, with many values exceeding 100 MW m−2, using high mass velocity, subcooled water flow through short, small diameter tubes.
162 citations
TL;DR: In this article, the critical heat flux (CHF) of subcooled flow boiling was analyzed based on the liquid sublayer dryout mechanism, i.e. the dryout of a thin liquid layer beneath an intermittent vapour blanket due to the coalescence of small bubbles.
161 citations