I am working on a cold storage project going for LEED certification , I am not able to understand the modelling procedure for the refrigerated spaces in eQuest.
The project has a built up of 1,35,000 sq. ft. out of which 89,913 sq. ft. incorporates refrigerated areas. I googled all the guidelines for cold storage energy modelling and followed the one by IACSC. The guideline was helpful but I was not able to understand the modelling of systems for the refrigerated areas.
Any suggestions on how shall I proceed ?
Thanks
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5914 thumbs up
June 28, 2018 - 12:27 pm
Sounds like you need to find someone to provide you with eQuest training.
This is a very broad question and is therefore difficult to actually answer in an online post. If you have more specific questions about eQuest I would suggest you join the eQuest Users group found at this web site - onebuilding.org
These folks offer eQuest training - http://energy-models.com/
N Sai Balaji
Project EngineerDesign2Occupancy Services LLP
June 29, 2018 - 1:40 am
Hi Marcus, Thanks for your response.
The LEED reference guide indicates that ASHRAE 90.1 has to be followed for the Energy Modelling purposes. However, the ASHRAE 90.1 does not indicate the modelling procedure for the refrigerated areas.
My query was that what other guideline shall we use, if any, for preparing a baseline case as the LEED reference guide does not specify any other guideline for these building types. Without a proper guideline, I will not be able to prepare a base case.
What methodology shall I use in this case ?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5914 thumbs up
June 29, 2018 - 9:54 am
Refrigeration is a process load and is not regulated by 90.1. All process loads must be modeled identically in both models based on the proposed systems. So you model the systems as designed and then include the same energy use in the baseline model.
If you wish to claim savings for this process load through an exceptional calculation then you typically establish the baseline yourself and provide a justification for why that baseline represents standard industry practice in your location. There are some prescriptive strategies for walk-in refrigeration equipment that may apply to your situation within the LEED Retail process load baselines here - https://www.usgbc.org/credits/new-construction-existing-buildings-commer...
N Sai Balaji
Project EngineerDesign2Occupancy Services LLP
July 30, 2018 - 8:41 am
Hi Marcus, I followed your advice. The above mentioned link is for retail process load appliances. However, in our case our whole building type is Cold Storage.
Can you confirm that whether we can follow the Appendix 3. Retail process load baselines, for A Cold Storage building ?
Thanks
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5914 thumbs up
July 30, 2018 - 3:38 pm
Basically your whole building is a walk in refrigeration unit so I think that Table 3 would apply.