Plate heat exchanger flow rate issue
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The model of the plate heat exchanger is known to be BR03B; it has 172 plates and an area of 50 square meters. The pressure of the hot inlet water is 0.45 MP, while the pressure of the hot outlet water is 0.35 MP. What is the flow rate of the hot inlet water? :$ :$ :$ Thank you.
This simply can’t be calculated. For the same model and same area, the flow rates vary due to differences in load and temperature.
Import and export temperatures are necessary. It’s impossible to calculate; too little information is available.
Inlet temperature: 50 degrees, outlet temperature: 35 degrees
Please provide the pipe outlet size, and I will estimate the flow rate at the pipe outlet based on the plate heat exchanger design
Based on the pipe outlet, the maximum flow rate for the plate heat exchanger is 50 m3/h, but this value is not typically used in designs; I estimate it to be around 30 m3/h. The water pump flow rate should be 40 m3/h
I think there are two methods of estimation; the first is to calculate based on the relationship between heat load, mass flow rate, and temperature difference. The second method is the one mentioned above, which involves estimating values based on the pipe diameter and the typical flow velocity of the fluid; however, it seems that the errors in this approach are still quite significant. I don’t know if there’s a better way downstairs
Of course there are errors; with no other parameters, this is the only option.