Seeking help with heat exchanger design
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Flue gas side: 400,000 cubic meters of coke oven flue gas, with a temperature of 320 degrees Celsius and a pressure of -500 Pa; the outlet temperature should be such that it meets the requirements for the air. Air side: 150,000 cubic meters of air, at a temperature of 20 degrees Celsius; a fan is required. It is not clear whether the fan should be used before or after the heat exchanger, so the air pressure is unknown and needs to be determined through design. The required air outlet temperature is 250 degrees Celsius, and the pressure can be several thousand Pa. Could you please advise on how to calculate the parameters for this heat exchanger? Thank you. I’m not sure whether to use specific heat to calculate such a heat exchanger, or heat capacity Could you please tell me what the enthalpy and specific heat capacity are for flue gas and air? Thank you. Could the teacher who understands the manufacturing process please help with the design? Thanks. Also, how should the flow rates of smoke and air be considered?
If the fan is on the outlet side, its operating conditions must be harsh, right? I think both enthalpy and specific heat are fine, but specific heat is related to temperature; you need to know the relationship formula. As for enthalpy, unless the enthalpy of phase change can be found, such enthalpy changes that do not involve phase changes are also calculated using the constant-pressure heat capacity
How much heat is required to raise 100,000 cubic meters of air from 20 degrees Celsius to 220 degrees Celsius? How much heat is released when the exhaust gas from a coke oven, with a volume of 100,000 cubic meters, is cooled from 350 degrees Celsius to 300 degrees Celsius? How should it be calculated?
Is it possible to add tubes for heat exchange in the convection section of a heating furnace?