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How can I set Heat exchanger fluil-to-fluid supply side outlet temperature?

asked 2020-11-21 08:52:38 -0600

I using primary and secondary loops to provide cooling in my case. A heatexchanger:fluidtofluid is used to connect these two loops. The problem is that the primary loop, which contains water/glycol as the working fluid, cools the heat-exchanger with a supply temperature of -4. I don't want that heat-exchanger outlet on the supply side of heat-exchanger flow the negative temperature. Because the fluid in the secondary loop is pure water. I'm using an ideal heat exchanger.

The green temperatures are my desired temperatures and the red ones with plenty of error are ones that I get! image description

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answered 2020-11-24 10:06:38 -0600

Did you place a setpoint manager on secondary loop?

If you are running the HX Uncontrolled , I suggest you to try CoolingSetpointModulated (reference here), then place a setpoint manager on the HX demand side outlet node (in addition to the sub-loop setpoint manager that should be placed at the supply side sub-loop outlet node

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Thanks, @Ag....

Mehrdad Vojdani's avatar Mehrdad Vojdani  ( 2020-11-26 15:07:00 -0600 )edit

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Asked: 2020-11-21 08:52:38 -0600

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Last updated: Nov 24 '20