IES-VE User Forum

Hi,

I'm interested in modelling earth tubes and or labyrinth systems in IES but unsure where to begin. I've seen a few links to a PDF guide but none of them seems to work! Any guidance would be great guys.

Many thanks,

C

Thanks for the response John, apologies for the late, LATE reply.

I understand I can draw the 'tubes'(rooms) at a minus level, but surely a little more detail on the inputs is required to see how the tubes or labyrinth will perform over the course of a year?

Regards,

C

Have a look here.
http://www.iesve.com/support/faq/pdf/ea ... faq221.pdf

There's s search facility on the iesve.com/support page. Not amazing but there's some helpful stuff on there.

Zap

Nice use of the multiple question marks - now you have my attention and displayed your ridicule that I have tried to help you out and FAILED in such a fantastic manner... the board as a whole should now shun me for the fool I am.

Okay, from the PDF, I thought the steps were pretty clear (probably a little wordy) so I guess you've already:
- drawn the tubes (how insulting of them to include in the pdf).
- assigned the adjacent ground condition using an annual profile that models the ground temperature (you've probably taken an average of the last 20 years or so... no point going much further back than that).
- then either:
i) Set up and assigned Macroflo openings for a fully passive system
or
ii) Set up your Labyrinth air exchange using a formula profile to reference the tubes and applied to the affected spaces
or
iii) Used an ApacheHVAC system - I'm not even going to start on this one for you I'm afraid... If you know how to use ApacheHVAC you'd probably not be asking in here.

That's all done and you aren't seeing anything happening? Sounds a little strange - the observing annual performance is the easiest bit: run simulation (Jan 1 - Dec 31), look at results in Vista (it should open automatically when the simulation ends).

Zap.

One quick google later...

Here's a paper by Kwang Ho Lee, and Richard K. Strand on using EnergyPlus for modeling labyrinths:
http://simulationresearch.lbl.gov/dirpu ... wangho.pdf

ZapBran wrote:Nice use of the multiple question marks - now you have my attention and displayed your ridicule that I have tried to help you out and FAILED in such a fantastic manner... the board as a whole should now shun me for the fool I am.

Zap, you fool! How dare you attempt to help someone in a help forum.

If anyone wants me I'll be in the angry dome.

Hey.. I see that the post is very old but there is no other discussion on modelling earth tubes. I am a graduate student at RIT Dubai campus. Very new to IES and have to model earth tubes. Please give me a detailed procedure for the same. I dont know how to even draw tubes at minus level.