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When we transfer heat power from one sort of liquid on a solid surface to another sort of liquid also on a firm surface, we use what we call a heat exchanger. It's a device that is meant to apply the foundations of convection [url=http://www.msc-sahc.org/moncler.asp]moncler pas cher[/url] and conduction. If uninsulated or if its exterior is at high temperature, it does not transfer heat energy to the outward environment. [url=http://www.gotprintsigns.com/hollisterpascher/]hollister[/url] It is frequently used in the world of engineering.

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One common kind of a heat exchanger is the automobile radiator. In this case, the warm fluid contained in the radiator is chilled by the air that passes over the outer surface of the radiator. The presence of heat transfer paste is not really a duty in all the types. Other examples of heat exchangers are intercoolers, condensers, [url=http://www.lcdmo.com/hollister.php]hollister co france[/url] boilers, preheaters, and other kit found in [url=http://www.gotprintsigns.com/uggpascher/]bottes ugg pas cher[/url] power plants. Its other uses are in chemical processing, [url=http://www.vivid-host.com/barbour.htm]barbour uk[/url] refrigeration, power production and air conditioning.

Heat exchangers come in different types, dependent on what materials they are made from, how heat transfer is done, what processes the liquids involved go through, how long the entire process occurs, etc . The types enumerated below differ in their construction :

A. Plate [url=http://www.achbanker.com/home.php]hollister france[/url] and frame heat exchangers when the heat flow is toward the baffles and there are plates with huge surface areas that serve as separators between the fluids, it is assessed as a plate and frame heat exchanger.

B. Shell and tube heat exchangers this sort is more common than the 1st one. It is made from several finned tubes where one sort of liquid flows and the other sort of liquid gets heated or cooled after it is going thru these finned tubes.

Heat [url=http://www.gotprintsigns.com/hollisterpascher/]hollister france[/url] exchangers can also be classified according to their purpose like whether they need a heat transfer paste, the way in which the heat transfer happens, which materials are essential for the method to occur, and the like. They can belong to the evaporative type, recuperative type, and regenerative type.

A. Evaporative type heat exchanger there are some things like a cooling tower where the liquid is chilled just like in the case of a coolant.

B. Recuperative type heat exchanger liquids exchange heat even if there's a dividing wall between them. It can be classified farther into the following :

1.Counter-flow [url=http://www.rtnagel.com/airjordan.php]jordan pas cher[/url] heat exchanger this sort enables fluids to exchange heat by passing through individual pipes toward opposite directions.
2.Parallel-flow heat exchanegr this type enables fluids to exchange heat by passing through individual pipes and going to the same direction.

C.Regenerative type heat exchanger all of the cold and hot fluids can compromise on the same space where a matrix of material exists and acts as a heat flow source or a sink.

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