Subcooling

About: Subcooling is a research topic. Over the lifetime, 6150 publications have been published within this topic receiving 99125 citations.

Method and system for cooling material using carbon dioxide snow

Abstract: High pressure liquid CO2 from a storage vessel is subcooled by flashing a portion of a liquid stream therefrom to liquid plus vapor and passing the remaining portion of the liquid stream in heat-exchange therewith. The lower pressure vapor, which is compressed and returned to the storage vessel, is used to transfer the subcooled liquid CO2 to a holding tank which may be located at a substantial distance from and above the storage vessel. High pressure vapor from the storage vessel is employed to intermittently supply subcooled high pressure CO2 to one or more snow-making devices, located closer to the holding tank, which apply CO2 snow to the material being cooled. High pressure vapor is also employed to prevent snow formation in the system upstream of the snow-making devices.

Natural Gas Hydrate Formation in an Ejector Loop Reactor: Preliminary Study

Abstract: A natural gas hydrate formation system based on the ejector-type loop reactor (ELR) has been built Three types of flow patterns in the reactor are observed with variation of the gas entrainment rate, ie, single-bubble regime, intermediate regime, and jet regime The flow pattern under the free suction state of the ejector is in the jet regime The microbubble generated from ELR with a static mixer can shorten the induction time for hydrate formation significantly However, it cannot improve the hydrate formation rate as the gas entrainment rate decreased with the static mixer on The hydrate formation rate of the ELR system is dependent on the subcooling, gas entrainment rate, and pressure and is fairly comparable with the formation rate of both water spraying and stirring reactor in the literature

Subcooled water flow boiling at 1. 66 MPa under uniform high heat flux conditions

Abstract: Steady-state subcooled water flow boiling experiments have been carried out in a uniformly heated horizontal circular channel with an exit pressure of 1.66 MPa and with the mass velocity G varying from 4.4 to 32.0 Mg/m{sup 2} {center dot} s. These experiments are related to high heat flux removal in fusion reactor beam dumps and first walls in compact fusion reactors. For the chosen values of L/D and exit pressure, the measured critical heat flux (CHF) values are higher than any previous values for smooth tubes in the literature. An increase in the exit pressure resulted in an increase in the slope of this relationship. However, the local heat transfer coefficient actually decreased as the pressure increased, for the same power level and mass velocity.