[Equest-users] Minimum Efficiency System 5

[Cam Fitzgerald]

Omer:

 

For system type 5 you should be using sub-category "single package" with the appropriate heating section type from Table 6.8.1A.  Table 6.8.1D applies to system types 1 and 2, small packaged terminal units.

 

Hope this helps.  Have a great day!

 

Cam S. Fitzgerald, PE, LEED AP

 

Energy Opportunities, LLC

a 7group company

e-mail:  fitzgerald at sevengroup.com

 

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Pasha Korber-Gonzalez
Sent: Tuesday, May 04, 2010 5:30 AM
To: Ömer Moltay
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Minimum Efficiency System 5

 

Omer,

 

I would use 6.8.1D.  Just because you are looking at a COP value doesn't mean that it wasn't originally an EER or SEER value, you might want to back out the EER value from your equivalent COP and see if you can reference it from the 6.8.1D table for Packaged equipment performance.

 

pasha

2010/5/4 Ömer Moltay <omoltay at mimtarch.com>

Dear All,

 

 

What would you choose as the minimum efficiency for baseline modelling for the DX cooling (923 kW) of System Type 5 from Appendix G (Packaged rooftop VAV with reheat)? I am looking at a model previously done by someone else and the COP has been chose as 2.96, which could mean that they have used Table 6.8.1A - Condensing units, air cooled. But I am not sure if this should be correct.

 

Thanks,

 

Ömer Moltay, LEED AP
Mimta Ltd.
Hekimsuyu Cad. 559. Sk. No:39
34255 Kucukkoy Istanbul Turkey
Tel: 90-212-617-2296
Fax: 90-212-617-2297
www.mimtarch.com <http://www.mimtarch.com/> 

 

Sürdürülebilir Binalar Blog
http://surdurulebilirbina.blogspot.com <http://surdurulebilirbina.blogspot.com/> 

 

Green Building in Turkey on LinkedIn
http://www.linkedin.com/groups?gid=2278249

	----- Original Message ----- 

	From: Piyush Varma <mailto:varpiyush at gmail.com>  

	To: equest-users at lists.onebuilding.org 

	Sent: Tuesday, May 04, 2010 11:55 AM

	Subject: [Equest-users] Queries

	 

	Hi all, 

	 

	I am an eQuest newbie and had 2 small queries which hopefully would be answered.

	 

	01. What's the logic behind eQuest giving positive (+ve) Cooling Loads & (-ve) negative Heating Loads. (I made an Admittance Method Algorithm & it gives me the opposite values, eQuest i.e. negative cooling loads & +ve heating loads, have checked all sign convention...can't figure out why? My algorithm simulates for Delhi's (India) climate predominantly, cooling loads.

	 

	02. I have asked this before...is there any library for data of alternating solar gain factors, especially for Delhi, India. (As far as i believe it does'nt take into account the alternating solar gain factor...) 

	 

	hope these get resolved soon, thanks in advance.

	 

	Regards,

	Piyush

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