Heat exchanger UA calculation, urgent! ! !

If only the temperature is known and not the corresponding flow rate, it should be impossible to calculate the UA value

The known conditions are incomplete. There are formulas in chemical engineering principles!

In the heat transfer formula: Q=UA×△t, and the calculations performed by heat exchanger software are also based on this principle. The heat load Q and the temperature difference for heat transfer Δt; thus, UA = Q/Δt, and UA is a constant value

With conditions like the one you mentioned, one can only find devices with the same manufacturing process but different scales to make comparisons.:lol The U value can be obtained by consulting relevant information!

U refers to the amount of heat per unit area per unit time

We’ll find out by simulating it with HYSYS

If you want to do the calculations manually, you can use the qualitative temperatures of the fluids on both sides to look up their physical properties (density, specific heat, thermal conductivity, dynamic viscosity, etc.), and then calculate the heat load and the logarithmic mean temperature difference. The heat load is given by Q = C * T * M, where C is the specific heat at constant pressure, T is the temperature difference, and M is the mass flow rate of the fluid. You need to choose the diameter and length of the shell, as well as the specifications of the heat exchange tubes inside it, along with the spacing between the baffle plates and the height of their notches, in order to determine the flow velocities of the fluids on both sides. From this, you can determine the heat transfer coefficients for each side. The overall heat transfer coefficient can be determined based on the heat resistances on both sides and those of the pipe walls. Once that is known, the heat exchange area A can be calculated using the formula A = Q / (U * T)