How to calculate the cooling water flow rate for a fixed-tube-sheet heat exchanger?
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The heat exchange area is 44 square meters; the media in both the tube side and the shell side are water, with hot water on the shell side. The inlet temperature is 120°C, the outlet temperature is 50°C, and the flow rate is 3 tons per hour； Cold water is water at 36°C at the inlet; how much cold water is needed?
The outlet temperature or flow rate must be determined first in order to make the calculation; based on a 5-degree temperature difference, 42 tons of refrigerant are required
The cold water flow rate is calculated based on thermal balance, but the heat exchange area is incredibly large!
If the previous conditions remain unchanged and the refrigerant flow rate is also 3 tons per hour, by how much can the temperature of the hot water be reduced?
If the cold water is also 3 tons, by how much can it lower the temperature of the hot water?