Heat exchanger principle

Heat exchangers work since heat normally spills out of a higher temperature to bring down temperatures. Along these lines, if a hot liquid and a chilly liquid are isolated by a heat leading surface heat can be exchanged from the hot liquid to the cool liquid.

The rate of heat stream anytime (kW/m2 of exchange surface) relies upon:

Heat exchange coefficient (U), itself an element of the properties of the liquids included, liquid speed, materials of development, geometry and cleanliness of the trade

Temperature distinction amongst hot and frosty streams

Add up to heat exchanged (Q) relies upon:

Heat exchange surface territory (A)

Heat exchange coefficient

Normal temperature distinction between the streams, entirely the log mean (DTLM)

Along these lines, add up to heat exchanged Q = UADTLM

Be that as it may, the bigger the zone the more noteworthy the cost of the trade

Accordingly, there is an exchange off between the measure of heat exchanged and the trade cost