[Bldg-sim] IES-VE for LEED

M F A Ramadan M.Fahmy at sheffield.ac.uk
Tue Aug 12 21:44:53 PDT 2008

A single and simple question please;

Have IES the CFD capability to simulate an outdoor environemnt of large urban
areas or even small ones ???

Best wishes to all,

Quoting Ho Tinkit <ho.tinkit at scottwilson.com.hk>:

> Dear all,
> I have been trying the IES-VE for LEED assessment for some time. Regarding
> to setting up the baseline model according to Ashrae 90.1 2004, I have
> following questions need to be clarified.
> For a 31 levels commercial building, a VAV system with centrifugal Chiller
> (300tons) at minimum efficiency of COP 6.1 and IPLV 6.4 is required as the
> baseline HVAC model as stated in table 6.8.1C of section 6.8 of Ashrae
> Standard 90.1 2004 and Table G3.1.1 of Appendix G. (Please correct me if it
> is wrong).
> Q.1 	Could anyone please  tell me the way to setup a such system in the IES
> Model? Should I use Apache system or Apache HVAC?
> Q.2  	For using Apache system, could anyone please tell me how to input the
> required values, especially to
> 		1) Generator nominal EER,
> 		2) Generator seasonal EER, and
> 		3) SSEER
> 		4) Heat rejection fraction
> Q.3 	In this connection, I noted that chapter5 of the VE Compliance User
> manual states this
> "On the cooling side an analogous relationship exists between SSEER and the
> following parameters:
> EER - the cooling system generator energy efficiency ratio or COP "
> As the general conversion of EER to COP is 3.412, then a system with EER of
> 6.1 would be equal to COP of 20.8, which is out of the editable range in the
> IES VE. Could anyone please  help to clarify the difference between EER and
> COP here.
> Thank a lot for any kindly information, and your reply is highly
> appreciated.
> Best Regards,
> Senior Assistant Engineer
> Scott Wilson Ltd
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