heat exchange


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heat exchange

[′hēt iks‚chānj]
(chemical engineering)
A unit operation based on heat transfer which functions in the heating and cooling of fluids with or without phase change.
References in periodicals archive ?
Briancon [3] and Andritsos [6] considered mainly the dependence of kinetics and mechanisms of sediments, depending on flow multiplicity of the heat exchange tubes surface, ribbing, and the recycling of the circulating water.
Diffusive (conductive) heat exchange in the pipe wall:
Heat Exchange Products also take care of process water systems incorporating filtration, softening, demineralisation or reverse osmosis as well as "stripping-water plants", producing clean water that does not block spray-nozzles.
Heat exchange areas of various shapes are used in practice e.
The surface of tube and fin bionic designed is done by bionics theory in this paper, which can reduce the dust accumulation, increase the heat exchange efficiency, and can fit for the high temperature and high humidity and high dust concentration bad environment.
Earlier this year, Alsius introduced the new Quattro(TM) catheter, a four-balloon heat exchange catheter that provides increased surface area and power for situations requiring insertion in the leg.
The important factors for the heating and cooling capacity of surface systems are the heat exchange coefficient between the surface and the room, the acceptable minimum and maximum surface temperatures based on comfort and consideration of the dew point in the space and heat transfer between the pipes and the surface (Table 1 (2,8)).
Duration of the pellet melting, heated in the course of the convection heat transfer, depends upon thermal physics properties of the material and coefficient of heat exchange at the interface between the body and the medium.
For these very high temperatures, the company developed a system using horizontal water-cooled tubes as the heat exchange surface.
With the primary heat exchange system running at 1,200[degrees]F," says Schoell, "the steam density would have been too low for the heat exchanger to be efficient.
Cold water, drawn from 250 feet deep, travels to a heat exchange facility where it transfers its coldness through solid stainless-steel plates to water that circulates to the campus in a second loop of pipeline.
Smith advocates the use of "pusher style" fans, saying the system is less likely to allow particles to accumulate between fins and inside the openings of radiator systems, reducing the surface area available for heat exchange and subsequently, their cooling efficiency.