[Bldg-sim] eQUEST vs. Energypro

Matthew Higgins higgins at edi-arch.com
Thu Apr 23 07:53:06 PDT 2009


I also use both eQuest and EnergyPro and have found that the biggest 
(envelope) difference is that eQuest uses a "time value" (via thickness 
of most materials), whereas EnergyPro has preset assemblies that you 
choose from, none of which have multiple thermal components, just an 
R/U-Value. I assume this is why you are experiencing this difference.

Matthew Higgins, LEED AP + ASHRAE-HBDP
Building Performance Specialist
Environmental Dynamics, Inc.
Architecture and Sustainability Consulting Services
505.242.2851

Any data provided by the Consultant, verbal or written, are to be considered opinions of building energy and/or daylight performance. The Client understands that the Consultant has no control of occupant habits, equipment or material performance or characteristics, site or climate conditions or the Contractor's method of assembly, and that the Consultant's opinions regarding building energy/daylight performance are made on the basis of the Consultant's professional judgment and experience. The Consultant makes no warranty, express or implied, that the energy/daylight performance of the building will not vary from the Consultant's opinion of building energy/daylight performance.

eric wang wrote:

> Hi Folks.
>  
> I recently start to use Energypro to model the VRF system. In order to 
> fully understand Energypro, I created a single zone building served by 
> PSZ DX system in eQUEST and Energypro. All parameters such as 
> location, design days, U factors, wall areas and Shading coefficients 
> are all the same in both models. However, I found the conduction 
> through window, wall, roof and underground floor and window solar gain 
> are all different in LS-C report. Even I exported all DOE reports and 
> compared them side by side, I still didn't figure out what the problem 
> is. Hopefully some experts on this board can answer my question. Your 
> feedback is highly appreciated.
>  
> Best,
>  
> Shaojie  
>  
>
>
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