[Bldg-sim] VRV System Equipment Efficiency

[Larry Degelman]

Here's another opinion (non-authoritative): I believe the VRV efficiency requirements would match best with the "air cooled, cooling and heating modes" requirements in Table 6.8.1B (for heat pumps).  In the ECB method, this would most likely be system 8, Packaged terminal heat pumps.  I agree that the ventilation should be modeled separately as a DOAS.

LOD
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Larry O. Degelman, P.E.
Professor Emeritus of Architecture
Texas A&M University
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From: Shubhra Kothari 
Sent: Monday, March 15, 2010 12:32 AM
To: reniel barroso 
Cc: bldg-sim at lists.onebuilding.org 
Subject: Re: [Bldg-sim] VRV System Equipment Efficiency


Well, there seems to be no ARI standard for testing VRV yet. So, you won't find it in 90.1.  
The closest you can get is packaged single zone (match cooling capacity) i believe but you'll have to figure out a way of modelling the fresh air side- as DOAS or others. 
Thanks
Shubhra Kothari

On Mon, Mar 15, 2010 at 12:26 AM, reniel barroso <renielbarroso at yahoo.com> wrote:

  Hi to all!

  Where can we find the Minimum Requirement System Efficiency of a VRV System in ASHRAE 90.1?
  Which of those systems mentioned in the ASHRAE 90.1 can we use to compare such equipment?


  Thanks


  Reniel


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