About Heat Exchanger.

HE is short for Heat Exchanger (heat exchanger) and stomach is an integral part of its importance and the need to be in any operation  needs to transfer heat from hot liquid to cold liquid or vice versa.


# What is the idea of Heat Exchanger?

* In principle, heat is usually transferred from hot materials to cold materials and this lead to a decrease in temperature of hot materials and high temperature of cold materials (the amount of heat lost = heat gained + heat leaked into the atmosphere)
* Heat transfer in the heat exchanger is mainly in two ways:
1- Conduction
2- Convection


# What is the purpose of the Heat Exchanger?
• The main purpose of the use of heat exchangers is to save money ... as the cost of heating crude oil, for example, requires a lot of fuel and energy. In the same unit, oil products need to be cooled before being sent to the tanks (so the two functions can be performed in one heat exchanger or a set of heat exchangers).




#Cases of fluid flow in heat exchangers?
There are two cases of fluid flow in heat exchangers:

1. Parallel Flow or Co- Current: The direction of fluid flow, in this case, is similar, ie, the fluid flows in the same direction.


2. Counter-Current Flow: The direction of fluid flow is the opposite, that is, the two substances are moving in opposite directions.

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