2006-07-27 09:04:49 · 8 answers · asked by jose u 1 in Science & Mathematics ➔ Engineering
Heat Exchanger
Heat exchangers are devices built for efficient heat transfer from one fluid to another and are widely used in engineering processes. Some examples are intercoolers, preheaters, boilers and condensers in power plants. By applying the first law of thermodynamics to a heat exchanger working at steady-state condition, we obtain:
mi hi=0
where,
mi= mass flow of the i-th fluid
hi= change of specific enthalpy of the i-th fluid
There are several types of heat exchanger:
recuperative type, in which fluids exchange heat on either side of a dividing wall
regenerative type, in which hot and cold fluids occupy the same space containing a matrix of material that works alternatively as a sink or source for heat flow
evaporative type, such as cooling tower in which a liquid is cooled evaporatively in the same space as coolant.
The recuperative type of heat exchanger which is the most common in practice may be designed according to one of the following types:
Parallel-flow
Counter-flow
Cross-flow
2006-07-27 09:09:42 · answer #1 · answered by stroha 2 · 2⤊ 0⤋
Heat exchanger are devices or equipment designed to transfer heat from one region to another .It is usually made up of materials that can transfer heat easily such as copper and aluminum.Heat exchangers are group of devices such as condensers and evaporators of air conditioner, cooling towers,refrigerators etc. . It makes one region colder the other hotter. It needs a substance to transport heat such as water ,air and refrigerant.
2006-07-29 00:16:44 · answer #2 · answered by yar2005 2 · 0⤊ 0⤋
heat exchangers are equipments which are used to transfer heat from a hot fluid to a colder fluid. they are fabricated out of materials which conducts heat easily. a variety of equipments are designed to suit the process needs.
2006-07-27 10:01:21 · answer #3 · answered by charles great 2 · 0⤊ 0⤋
You're in for some fairly complex calculations if you want a detailed design from scratch. There are many different types.
2006-07-27 09:10:34 · answer #4 · answered by Robert A 5 · 0⤊ 0⤋
with what?
It exchanges heat... thats exactly what it does.
2006-07-27 09:07:45 · answer #5 · answered by AresIV 4 · 0⤊ 0⤋
its a device to absorbe heat from system by cooling with water ,,
2006-07-27 09:11:43 · answer #6 · answered by source_of_love_69 3 · 0⤊ 0⤋
Do you want to build one, buy one, repair one, or other?
2006-07-27 12:44:57 · answer #7 · answered by STEVEN F 7 · 0⤊ 0⤋
Sure!!!
2006-07-27 10:23:22 · answer #8 · answered by Jeffrey S 6 · 0⤊ 0⤋