Relationship between reaction heat and heat exchange area
Thread Content
I would like to ask an expert: when calculating whether the heat exchange area meets the heat exchange requirements, I was given data on the reaction heat; I don’t understand what relationship this has with the heat exchange area
The total heat is calculated using the reaction heat, and then the heat exchanger is designed based on this total heat
The heat transfer calculation formula is Q=KA·DT; in simple terms, Q represents the heat of reaction, A is the heat exchange area of the equipment, K is the overall heat transfer coefficient, and DT is the temperature difference for heat transfer. To determine whether the heat exchange area is sufficient, the required heat exchange area is calculated based on heat flow, the overall heat transfer coefficient, and the temperature difference; this calculated value is then compared with the actual heat exchange area of the device. If the calculated value is smaller than the device’s actual heat exchange area, then it is sufficient. For a detailed understanding, it is recommended to read Principles of Chemical Engineering.
In the case of intermittent operation, the heat transfer capacity of the heat exchanger must also meet the requirements of the peak heat load, with an appropriate margin to prevent the reactor temperature from getting out of control.