Can anyone please tell me how to calculate the LMTD value for this shell and tube heat exchanger.
Shell side has two separate inlets which are considerably far from each other. One is a gas stream sparged at 187 0C temperature and other is a liquid stream at 106 0C.The gas stream is continuously sparged through a pool of liquid,(with the continuous liquid stream coming) and an exothermic chemical reaction happens between the gas and the liquid.I have calculated the heat load of the heat exchanger.
Both gas and liquid streams mix ,react and leave at two outlets in same place ,where gas and liquid are in same temperature at 175 0C.
Tube side is a U tube bundle submerged in the pool of liquid. Inlet is saturated water at 4.5 bar pressure (at 147.9 0C) and outlet is saturated steam at 4.5 bar pressure (at 147.9 0C)
I'm puzzled about how to get the inlet temperature of the shell side to calculate LMTD value, Should I use the average temperature ? or is there any other way.
Edited by cheminst, 01 January 2016 - 06:09 AM.