How can I model a heat exchanger between moist gas and gas system in simulink?

Hi

I am modelling a simulink heat exchanger between moist hydrogen gas and dry air. For hydrogen, I am using Moist gas model with hydrogen as trace gas and for air I am using gas. But simscape library does not have the heat exchanger between G-MA. It has G-G model but there I cannot use moist hydrogen gas.

Thanks in advance

[Yifeng Tang]

Hi Prithviraj,

You are right that there isn't a MA-MA heat exchanger. We have to get a bit creative here. Just an idea, you'll have to try it and see if it works.

I would assume you are trying to cool down the moist hydrogen and water condensation can occur. If this is not the case, leave a comment; it would be easier actually :p

The workaround I have in mind is to use a 2P-MA heat exchanger, and use two Interface (2P-G) blocks to go between the 2P & G domains. You will need to attached a two-phase property block to the 2P part so it's air, and you'll need REFPROP or Coolprop to get the air thermodynamic properties. If you have access to either software, you can use the twoPhaseFluidTables command to get the properties into Simscape (see: https://www.mathworks.com/help/simscape/ref/twophasefluidtables.html ).

Not super elegant, but I feel it may work.