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How do I obtain a desired UA or Approach Temperature in a heat exchanger?

April 26, 2017approach Desired exchanger heat obtain temperature UA

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How do I obtain a desired UA or Approach Temperature in a heat exchanger?

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For simple cases the UA or Approach Temperature can be specified directly in a cross-exchanger. Note that this must be a cross-exchanger block because the UA, LMTD, and Approach Temperature specifications are not available for two single-sided exchangers linked by an Energy Stream. For more complicated configurations with interconnected cross exchangers and recycles, a simple solver can be used to find the value of duty or temperature in a cross exchanger to achieve the desired UA or Approach Temperature. See ProMax Help for detailed examples describing the setup of UA or Approach Temperature solvers.