How to convert the heating area into the total heat exchange amount
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Due to capacity reduction and the shutdown of coke ovens, the heating water used to cool gas through the upper section of the pre-cooler could not be supplied properly this winter. It is planned to use low-pressure steam at 0.3 MPa and 200°C to indirectly heat fresh water into hot water for heating purposes. There is an existing old shell-and-tube heat exchanger (preheater for the pressure tower in the methanol plant), with a heat exchange area of 513 m3. The heat exchanger was originally used to heat crude methanol at 85°C to 125°C using steam condensate at ~150°C and 0.5 MPa. Can this heat exchanger be used? Given that the heating area is 15,414 m2, how can this be converted into the total heat exchange capacity, so as to determine the required heat exchange area? I have never designed a heating system; please help me out. Thank you
Heat index = heat load / area X
Do thermal indicators refer to the heating water volume and the temperature difference of the heating water? Thank you
A thermal index refers to the heat consumed per unit area of heating.
The total heat exchange amount needs to be determined based on the heating requirements of the building. For buildings that are not energy-efficient, it is necessary to consult relevant manuals; the \"HVAC Design Manual\" can serve as a reference in this regard