The issue of waste heat utilization in boilers.
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I want to make use of the waste heat from the boiler; the steam temperature is around 180 degrees. To do this, I’m thinking of installing a plate heat exchanger to heat the soft water to around 130 degrees before sending it back to the boiler. Is that feasible? Has anyone done this before? I would appreciate your advice! The original design concept involved using a plate heat exchanger; steam was used as the heat source, while soft water was used on the cold side. The soft water, at around 70 degrees Celsius, was heated to 130 degrees Celsius and stored in a pressurized hot water tank, from where it could then be used in the boiler. Maintain a pressure of around 3-4 kilograms throughout the entire pipeline. It is necessary to verify the feasibility; please give your advice!
Have any friends done this or something similar? I would appreciate your guidance.
For plate heat exchangers, fully welded plate-and-shell heat exchangers are the best choice, as they are resistant to high temperatures and impacts, and offer safety and efficiency.
Spiral plates are more suitable; there is a problem with the pressure resistance of plate exchangers, but spiral plates do not have this issue