Heat exchanger selection and calculation
Thread Content
RT. It is now necessary to convert the coal-fired heat transfer oil boiler into a heat exchanger that uses steam to heat the heat transfer oil. Steam parameters (superheated): T=300℃, P=3.5MPa (the saturation temperature of steam at this pressure is approximately 245℃). Heat transfer oil parameters: Inlet: T=220℃, P=0.6MPa ； Conditions: T=250℃, P=0.6MPa. Flow rate: 200 m3/h. I have not done anything similar before, so I don’t know what type of heat exchanger to use. Those who are good at calculations, please show the process so that I can learn from it. This situation involves phase changes as well as high temperatures and pressures; I’m not sure what aspects need attention, so I hope experts can give me some advice. = =Please do not discuss the meaning of doing this; I also think this change is not a good one.
Look for relevant heat exchanger software for calculations
Contact the original designer of the coal-fired heat transfer oil boiler to get an estimate.
The outlet temperature of the heat transfer oil cannot be achieved
Why is it meaningless? When superheated steam is heated, it first cools down before condensing; at the same temperature, the pressure of saturated steam is too high, which places high demands on the equipment.
We do manufacture such heat exchangers; it’s just that in your application the pressure of the heat source is a bit too high, and it needs to be reduced. Fully welded plate heat exchangers are suitable for high-temperature and high-pressure operating conditions: with a working pressure of up to 2.8 MPa and a working temperature of below 280 degrees Celsius. You can add me on QQ 1035366037 for details