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[EnergyPlus_Support] Re: Can HVAC system take air from earth tubes instead of ambient?
Hi all,
First of all I would like to thank you for the great solution you find for the EarthTube issue. I had to set up earth tubes in my model and I encountered the same problem as you. But after using your EMS code, this problem seems to be perfectly solved!
As of now, I am trying to get more accurate results on my earth tube system simulations but I find another shortcoming of the E+ EarthTube object.
In my actual building I have an earth-tube system which consists of 7 pipes (50m lenght each) that feed the HVAC system of the building for pre-cooling. But E+ only allows to set up 1 pipe per Zone so I'm afraid that the simulation results may differ from the real performance.
So far, only two alternatives I have thought of are:
1. Set up and equivalent length (1 pipe of 350m) or
2. Divide my room into 7 equal zones and set one EarthTube in each of them
First alternative I think, it may affect in a wrong way to the pressure drop in the pipe, thus to the Fan Electricity consumption
As for the second one, I'm not sure if the outlet temperatures coming of the EarthTube will still be consistent according to the actual performance due to mixing and heat gains.
I would really appreciate any comments or solutions.
Thank you!!
Cheers
Marcos Perez-Vazquez
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Posted by: marcusbrown1326@xxxxxxxxx
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