Heat-Transfer Fluid

Heat-Transfer Fluid

 

(also heat-transfer medium or coolant), a mobile medium used for transferring heat from a hotter object to a cooler object. Heat-transfer fluids are used for cooling, drying, and heat treatment in heat-supply, heating, and ventilation systems and in industrial heat devices. The most common mediums are flue (stack) gases, water, steam, liquid metals (potassium, sodium, and mercury), Freons, and aerosols of bulk materials.

In the process of transferring heat, heat-transfer fluids may change their state of aggregation, as in the case of boiling liquids and condensing vapors, or they may remain in the same state, as with nonboiling liquids, superheated vapors, and noncondensing gases. In the first instance, the temperature of the heat-transfer fluid is unchanged, since only the heat of transformation is transferred; in the second, the temperature of the fluid increases or decreases. There are special requirements for the heat-transfer fluids (coolants) in nuclear reactors.

REFERENCE

Chechetkin, A. V. Vysokotemperaturnye teplonositeli, 3rd ed. Moscow, 1971.

heat-transfer fluid

Liquid which absorbs heat energy at a heat source (for example, in a solar collector) and then transports this energy to a heat exchanger or to its point of use.
References in periodicals archive ?
First, new Paratherm HT heat-transfer fluid is a partially hydrogenated terphenyl suitable for very high-temperature uses--up to 675 F.
The loan is to support the export of American heat-transfer fluid produced by Dow Chemical Company for concentrating solar power projects (CSP) in Spain and South Africa.
6 million to Abengoa of Seville, Spain, that will facilitate the export of American heat-transfer fluid produced by The Dow Chemical Company for use in solar projects in Spain and South Africa.
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Characteristics of microncapsulated PCM slurry as a heat-transfer fluid.
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Solar units use the sun's rays to heat either water or a heat-transfer fluid in collectors mounted, in most cases, on a roof.
Heat-transfer fluid is circulated between the heater and the dies to provide consistent, uniform heating for the manufacturing of parts.
The company produces name-brand products, such as SAFLEX plastic interlayer, Wear-Dated carpet fibers, and Therminol heat-transfer fluid, for domestic and international markets.
In addition, Paratherm recently came out with a higher-temperature heat-transfer fluid for use at up to 650-675 F.
The new class of heat-transfer fluid is called nanofluids.
It's a time-consuming task that is best prevented through regular cleanings and application of an anti-seize product like Watlow Release and Heat-Transfer Fluid (from Watlow Electric Mfg.