Calculation method for condenser circulation water volume

It’s impossible to calculate without knowing the heat transfer rate; otherwise, an estimate can be made based on the diameters of the inlet and outlet pipes, with the circulation water volume calculated at 1.5 m/s.

What medium is used in the shell side and what is the flow rate to enable an accurate estimation?

The shell-side fluid is C4 and methanol, with a flow rate of 15,780 kg/h

They really spare no words – they don’t even bother to state the ratio of C4 to methanol. The general approach is to first determine the composition and flow rate of the medium being cooled, then look up its specific heat (and the heat of vaporization if there is a phase change), in order to calculate the amount of heat required. Based on the heat transfer equation at http://wenku.baidu.com/view/dd201520aaea998fcc220efb.html, a value for K is taken as an empirical value; A is determined based on the actual conditions of the heat exchanger, and the average temperature difference is calculated. From this, the temperature of the cooling water can be determined. The flow rate can then be calculated using the specific heat of water, the temperature difference, and the heat transfer amount. It is also possible to use specialized software to enter the necessary values – just type them in and press Enter, and the result will be displayed

It has nothing to do with heat transfer. It needs to be calculated based on the heat load, or the heat load can be determined by providing information such as the composition on the process side and the inlet and outlet temperatures. The calculated circulating water flow rate is only a design value, and it is related to the actual inlet and outlet temperatures of the circulating water. There is a way to measure the flow rate of circulating water, which allows for the direct calculation of the actual flow volume. What is the purpose of calculating circulating water?