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What is the meaning of the variable of *ht.DeltaH*?

Posted 10 août 2020, 21:42 UTC−4 Heat Transfer & Phase Change Version 5.4 2 Replies

Tianjiao Bi
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When I studied the application* Concentric tube heat exchanger(Application Library path: Heat_Transfer_Module/Applications/concentric_tube_heat_exchanger, version: 5.4), I found a variable *ht.DeltaH in the expression of E (effectiveness of heat exchanger), which I couldn't find it in the Help document. What is the meaning of the variable ht.DeltaH ? Thanks for your help!

2 Replies Last Post 21 août 2020, 02:45 UTC−4
Will Tran
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Posted: 4 years ago 21 août 2020, 00:47 UTC−4

Can you say clearer

Can you say clearer
Magnus Ringh COMSOL Employee

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Posted: 4 years ago 21 août 2020, 02:45 UTC−4

Hi,

If you search for ht.DeltaH using the Find tool (press Crtrl+F), you will see that where it's defined, and moving to that list of variables in an Equation View node (enable Equation View in the Show More Options dialog box), you can see its definition and that it's the sensible enthalpy, which is related to sensible heat. We will look into if we can make the model documentation more clear about the variables that it uses.

Best regards,

Magnus Ringh, COMSOL

Hi, If you search for `ht.DeltaH` using the **Find** tool (press Crtrl+F), you will see that where it's defined, and moving to that list of variables in an **Equation View** node (enable **Equation View** in the **Show More Options** dialog box), you can see its definition and that it's the *sensible enthalpy*, which is related to sensible heat. We will look into if we can make the model documentation more clear about the variables that it uses. Best regards, Magnus Ringh, COMSOL

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