I have a question regarding the calculation of heat during the insulation process
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It is a drying chamber with dimensions of approximately 25,000×5,000×4,000. The heating process involves an exhaust fan drawing air out of the chamber, heating that air through a shell-and-tube heat exchanger, and then a blower delivering the heated air back into the chamber in a closed-loop system. In this heat exchanger, diesel fuel flows through the tube side while air flows through the shell side. Once the temperature inside the chamber reaches the set value, the insulation procedure is activated, the fans stop operating, and the diesel fuel ceases to burn. When the system detects that the temperature inside the chamber drops by 3°C below the set value, the heating process is restarted: the fans come back online and the diesel fuel begins to burn, and this cycle repeats itself. I would like to ask everyone how to calculate the heat involved in this heating and insulation process; no specific data are provided, so please share some ideas. Thank you so much
My understanding, though it may not be correct, is that the initial and final temperatures of the heated air are known; the mass of the air can be determined from the flow rate of the fan, and then the first law of thermodynamics can be used to calculate the value. It’s not necessarily true; learn together
The volume of the drying room is constant, and the heating process is a closed-loop one; therefore, the air quality can be determined. What you mentioned is only the calculation of the heat required to heat from the initial state to the final state, while the heat retention phase isn’t taken into account
The process of drying the room should start with the drying equipment, right?
Starting with the equipment – does that mean looking at the time interval between insulation and heating of the equipment, or something else?