[Equest-users] Minimum Efficiency System 5

[Ömer Moltay]

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

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  ----- Original Message ----- 
  From: Piyush Varma 
  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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