Seeking help with calculations related to steam heaters and shell-and-tube heat exchangers in Aspen EDR
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Attached are my calculation parameters; steps one to eight are the results of my calculations. This is the first time I have designed this type of heat exchanger. I’m not familiar with software or anything like that. Please help me figure out where there’s an error in my calculations. My calculation must be wrong. Because, based on experience, the heat transfer coefficient is around 1500, resulting in a heat transfer rate of about 27 W. Please help take a look.
Type: Horizontal shell-and-tube. Heat transfer capacity: 27MW. Steam inlet pressure: 0.3 Mpa. Steam inlet temperature: 143.6°C. Hot water inlet temperature: 75°C. Hot water outlet temperature: /℃. Steam flow rate: 46,700 Kg/m³. Design pressure on the steam and hot water sides: 1.6 Mpa. Pressure drop on the steam and hot water sides: 0.05 Mpa. Water supply rate: 2,450,000 Kg/h
You haven’t included the specific calculation parameters and steps, so it’s not possible to identify the problem directly. However, you can check the following common error points: verify that the fluid properties (such as temperature, pressure, flow rate, specific heat capacity, etc.) have been entered correctly, check whether the appropriate type of heat exchanger and materials have been selected, and ensure that all heat losses and pressure drops have been taken into account. If all of these are fine, it may be necessary to check the calculation settings in the Aspen EDR software or contact technical support for assistance. .