What is different between heat exchanger and condenser in term of internal construction.?

Answer 1

Condensor is a type of heat exchanger where the phase changes.
It is a special type of heat exchanger.

A heat exchanger is a device built for efficient heat transfer from one fluid to another, whether the fluids are separated by a solid wall so that they never mix, or the fluids are directly contacted. They are widely used in refrigeration, air conditioning, space heating, electricity generation, and chemical processing. One common example of a heat exchanger is the radiator in a car, in which a hot engine-cooling fluid, like antifreeze, transfers heat to air flowing through the radiator.

(Phase-change heat exchangers:
In addition to heating up or cooling down fluids in just a single phase, heat exchangers can be used either to heat a liquid to evaporate (or boil) it or used as condensers to cool a vapor to condense it back to a liquid. In chemical plants and refineries, reboilers used to heat incoming feed for distillation towers are often heat exchangers. Distillation set-ups typically use condensers to condense distillate vapors back into liquid.

Power plants which have steam-driven turbines commonly use heat exchangers to boil water into steam. Heat exchangers or similar units for producing steam from water are often called boilers. In the nuclear power plants called pressurized water reactors, special large heat exchangers which pass heat from the primary (reactor plant) system to the secondary (steam plant) system, producing steam from water in the process, are called steam generators. All power plants, fossil-fueled and nuclear, using large quantities of steam have large condensers to recycle the water back to liquid form for re-use.

In order to conserve energy and cooling capacity in chemical and other plants, regenerative heat exchangers can be used to transfer heat from one stream that needs to be cooled to another stream that needs to be heated, such as distillate cooling and reboiler feed pre-heating.

This Term can also refer to heat exchangers that contain a material within their structure that has a change of phase. This is usually a Solid to liquid phase due to the small volume difference between these states. This change of phase effectively acts as a buffer because it occurs at a constant temperature but still allows for a the heat exchanger to accept additional heat. One example where this has been investigated if for use in high power Aircraft Electronics.)

Answer 2

All condensers are heat exchangers but not all heat exchangers are condensers. Heat exchangers may be used to heat or cool a liquid or gas using a second liquid or gas. A condenser is used to cool and change the state of a vapor into a liquid, often steam into water. As such the condenser must have more space within it for a large volume of vapor to obtain maximum heat transfer surface area. There may also be baffles to direct the steam and protect the tubes from erosion and to direct noncondensable gases to and orifice where they can be removed, perhaps by an air ejector.

Answer 3

I thank God that I have no hatred for another human being,having said that there are many times I dislike certain things that people do and I am sure some people feel the same way about me.