Shell And Tube Heat Exchanger Heat Transfer Coefficient. Nomenclature needs to be defined. Q h t a t t tw t t tube side heat transfer.
The outer heat transfer coefficient is assumed to behave in the following manner with the fluid velocity in the shell vo. Result indicate that for the same amount of overallcomplete heat transfer ate of flow has reduced by 42 in plate type warmth. The baffles and turbulator install within the shells and tubes to maximize the turbulence of the fluid in the shell and tube side.
The traditional shell and tube heat exchanger is the recent development of the corrugated tube heat exchanger.
Nomenclature needs to be defined. T for a 1 2 heat exchanger which has 1 shell pass and 2 or more even number of tube passes can be determined from the chart in the appendix viii and is given by. O is the heat transfer coefficient for the fluid flowing in the shell h i is the heat transfer coefficient for the fluid flowing through the tubes a i and a o are the inside and outside surface areas of a tube respectively and a lm is their log mean. The overall heat transfer coefficient u is the sum of several individual resistances as follows.