[Equest-users] One question about eQUEST

[Sami, Vikram]

Ok here goes - copying the group in case anyone else has better feedback

At first glance here's a couple of impression. I don't do too many single family homes, so my mental validation might be off.


*         The fan load is high compared to everything else. Partly because everything else is really low. Your annual EUI is 13.2 KBTU/ft2-yr - that's very low - even for a house. This makes sense with a GSHP.

*         1" static pressure on your fans might be high for a residential terminal unit that's not ducted.

*         PVVT might not be the best system choice to go with a ground loop - try a water loop heat pump. You will still have fan energy, but with a terminal unit (as opposed to a ducted one) you should see that go down.

*         The heat recovery system for the ventilator is a more complex matter that will require you to go well beyond the SD wizard. You will need to model a DOAS with energy recovery.




Vikram Sami
Associate Partner



ZGF ARCHITECTS LLP
T 206.521.3509 E vikram.sami at zgf.com
925 Fourth Avenue, Suite 2400
Seattle, WA 98104


From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Sami, Vikram
Sent: Tuesday, September 17, 2013 3:17 PM
To: James Mathias; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] One question about eQUEST

James,

What is your system selection? Also - could you attach your inp file?

Vikram Sami
Associate Partner



ZGF ARCHITECTS LLP
T 206.521.3509 E vikram.sami at zgf.com<mailto:vikram.sami at zgf.com>
925 Fourth Avenue, Suite 2400
Seattle, WA 98104


From: equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org> [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of James Mathias
Sent: Monday, September 16, 2013 3:04 PM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: [Equest-users] One question about eQUEST

Hello,

I have one, I think fairly simple questions about eQUEST.

1. My simulation shows quite a bit of energy used by ventilation fans but it is for a simulation of a house that does not have ventilation fans. Where can I tell eQUEST there are no ventilation fans? I do actually have an heat recovery ventilation system but it runs for about only 2 hours each day. Does eQUEST have the ability to simulate that also?

James Mathias, Ph.D., P.E.
Associate Professor
Mechanical Engineering and Energy Processes
Mailcode 6603
ENGR E-024, 1230 Lincoln Drive
Carbondale, IL 62901
618-453-7016, -7658 fax


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