Issue with fluctuating chilled water loop temperature in a trajectory

asked 2024-03-29 12:18:44 -0500

larry liong's avatar

updated 2024-04-01 09:34:53 -0500

I tried running two test cases here

1, Fluctuating the chilled water loop setpoint temperature within a trajectory. Ex. randomize the temperature in the range of [6, 11] C at each timestep. 2. Simulate 6 times from [6,11] C, where a similar setpoint temperature is used for every trajectory. Ex. 6C for trajectory 1, 7C for trajectory 2, ...

Despite achieving the desired setpoint at times, the HVAC values for test case 1 are inconsistent with test case 2.
Has anyone faced this issue and how to overcome it?

test case 1


test case 2


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@Gen Bing what simulation tool are you using? Please mention it in the title or body of your post, as well as add a tag so that others can provide better help.

Aaron Boranian's avatar Aaron Boranian  ( 2024-04-01 09:34:02 -0500 )edit