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[rsk]

We have employed a plate type HX for cooling of water in pond which contains a heat source. Now during summer seasons atmosphere over pond becomes very humid. In design it was envisaged to maintain pond water temperature 35 deg celcius and was maintaining during initial days.now it is reaching up to 45 deg Celsius. We checked cooling water flow rates and cooling water inlet temperature are as per original design values. Now if we increase the no of plates will it give any benefit or increasing which side flow pond side or cooling water side will give benefit.
please how to analyze this using effectiveness NTU method.

[rsk]

If we want to calculate the heat load contributed by heat source in pond how to do it..
Whether I am right it will be sum of
HX duty and heat loss by evaporation from pond surface.