[Equest-users] Cascading airflows in eQUEST

[Kathryn Kerns]

This is just a suggestion and I haven't had time to investigate it yet, but I would think that the zone that the air is cascaded to could be represented by a PSZ system that uses the specified amount of zone transfer supply air with supply heating and cooling temperatures around 65 F heating and 75 F cooling and heating and cooling devices that are artificially constructed so they don't consume energy since you have already paid for the energy in the first zone. Its not perfect, but it might be close enough.

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From: Equest-users on behalf of PKConsulting
Sent: Mon 6/2/2014 4:05 PM
To: Sami, Vikram
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Cascading airflows in eQUEST


Hi Vik,  no you can't.  DOE2 is a static calculation and cannot exchange from zone to zone.  The only way I can consider to try to mimic something would be to use one large zone for both and then reduce the amount of air changes in that zone compared to a normal input; and then try to widen the t-stat range for a lower load in that zone so it acts more 'neutraly' conditioned than a typical HVAC approach.  Otherwise if you figure something out id like to learn what you did.  

Pasha 
Ph: 308-763-1593

On Jun 2, 2014, at 3:00 PM, "Sami, Vikram" <vikram.sami at zgf.com> wrote:



	Is it possible to cascade airflow from one zone to another in eQUEST? I'm familiar with the OA from system function. Is there an OA from Zone command? I have a situation where we have significant makeup air from one zone coming into another. 

	 

Vikram Sami
BEMP, LEED BD+C 
Associate Partner

 

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

	 

	 

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