[Bldg-sim] ERV with increasing cooling load
Xiaobing Liu
XLiu at climatemaster.com
Tue Oct 28 08:15:47 PDT 2008
I'm wondering whether the Mixed Air Reset will really be implemented in the real system? How big difference the air temperature control strategy will make?
Xiaobing
-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org]On Behalf Of eric wang
Sent: Tuesday, October 28, 2008 10:06 AM
To: bldg-sim at lists.onebuilding.org; Kingsley, Michael L.
Subject: Re: [Bldg-sim] ERV with increasing cooling load
Hi,
Thanks a lot for all your replies. I changed the following settings and solved the problem.
Control Sequences Operation: when minimum OA
Make air temperature cotrol: Mixed Air Reset
Best,
Shaojie
--- On Tue, 10/28/08, Kingsley, Michael L. <MICHAEL.L.KINGSLEY at saic.com> wrote:
From: Kingsley, Michael L. <MICHAEL.L.KINGSLEY at saic.com>
Subject: RE: [Bldg-sim] ERV with increasing cooling load
To: shaojieworld2006 at yahoo.com, bldg-sim at lists.onebuilding.org
Date: Tuesday, October 28, 2008, 8:09 AM
Shaojie,
Check to make sure that you are not recovering heat during hours that
you can be using the economizer. Choose the Control Sequences:
Operation: "When Minimum OA" so that the heat recovery device will
only
operate when you cannot benefit from free cooling.
Mike
Michael L. Kingsley, PhD, PE, LEED AP
Senior Engineer/ Project Manager
SAIC
6390 Fly Road
East Syracuse, New York 13057
Phone: (315) 437-1869 x205
Cell: (315) 373-4081
Fax: (315) 437-1866
Email: kingsleym at saic.com
-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of eric wang
Sent: Monday, October 27, 2008 11:32 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] ERV with increasing cooling load
Hi,
I model a PSZ system with exhaust air heat recovery. I set the static
pressures of supply/exhaust fans as zero in ERV tab. Therefore, the fan
energy is the same with or without ERV. However, there is an increasing
cooling load in the cooling model. I changed the hourly report and
didn't find the reason. Any suggestions are highly appreciated.
Thanks
Shaojie
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