Variable Speed Cooling Tower
Hello,
I am trying to change a single speed cooling tower serving WSHPs to a variable speed cooling tower, but every time I make the change in OS, it stops working and I have to close it. No error file is generated, so it is not possible to understand the reason for the issue. I am keeping the design inputs same for the single speed and variable speed with the only change being the fan control. Even if I specify a fluid cooler instead of a cooling tower, the issue persists. Even if I change the type of setpoint manager, or delete one / all setpoint managers, the issue persists.
Here is the picture of the configuration:
The heat exchanger exchanges heat with boilers. That's how the system is designed.
Looks like a similar problem was reported previously. https://unmethours.com/question/580/o.... However, answers to that thread don't help me. OS does not seem to model variable speed as readily as single speed.
Please share your thoughts on this.
Pranav
PS:Since I was not able to model the variable speed control in OS, I tried modeling it in E+. E+ simulated the IDF file, but (prima facie) the electrical energy increased instead decreasing.....so that's one more issue. I will write about this if I don't get any helpful tips on the OS issue above!!
Here is the picture of the issue C:\fakepath\OS-April3-1.png
When you say "stops working" do you mean that the OpenStudio application stops responding, or the EnergyPlus simulation doesn't run? Could you post a link to the .osm?
@aparker I edited the question. I included a file showing the issue. Hope that helps.
This looks like a software bug and should be reported in a github issue not on unmet hours.