[Equest-users] Medical equipments
Fred Betz
fbetz at aeieng.com
Tue Oct 25 06:25:06 PDT 2011
Chen,
I do a lot of LEED modeling in health care. You should be seeing between 20% and 35% for the electrical process load.
If you have a lot of large equipment; CT's, MRI's, etc. then you'll be closer to the 35%. If you have a small clinic or medical office building that shares equipment between locations, then you'll be closer to 20%.
Another consideration is that your large equipment might be water cooled. If that's the case, you should put about 10-15% of the electric load in the space, and then 85-90% of the load as an external load similar to exterior lights. Make sure to put an equivalent cooling load on you chilled water loop as a process load.
Hope that helps,
Fred
Fred Betz PhD., LEED AP
Sustainable Systems Analyst
AEI | AFFILIATED ENGINEERS, INC.
5802 Research Park Blvd. | Madison, WI 53719
P: 608.236.1175 | F: 608.238.2614
fbetz at aeieng.com<mailto:fbetz at aeieng.com> | www.aeieng.com<http://www.aeieng.com/>
From: Bruce Easterbrook [mailto:bruce5 at bellnet.ca]
Sent: Sunday, October 23, 2011 9:35 PM
To: Chen, Ke-Huang
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Medical equipments
Hi Chen,
I don't do much medical work or LEED but the medical equipment should be modelled like a process load and have it's own schedule you can manipulate. 60% sounds like a lot. With it's own schedule you can change it to reflect its actual loads and locations in the building. Process loads, like industrial loads don't effect LEED. But they do effect the sizing of your HVAC equipment. So you do have to model them realistically. You could put them on their own sub meter as well. This might make separating from the LEED parts of your project simpler. LEED or not, your building has to work well. That is your primary focus. 60% is a big effect, make sure it is realistic and make sure your systems can handle it.
Bruce Easterbrook P.Eng.
Abode Engineering
On 23/10/2011 4:35 AM, Chen, Ke-Huang wrote:
Dear eQUEST users,
I am trying to build a LEED Health Care model and have a question about the electric of medical equipments. After I modeled the equipments, the electric consumption of Misc. Equip. is about 60% of total electric but the medical equipments are not used very frequently. Do I have to add the medical equipments to the model or where can I plan a schedule for the medical equipments? Did anyone have the experience of modeling a LEED Health Care model? It's my first time building a Health Care model, is there anything I need to look over ? Any suggestion will be appreciated.
Best regards,
KeHuang Chen
System Engineer
IBT Division
Siemens Limited Taiwan
Tel : (+886)2-2652-8888 ext. 896
Mobile : (+886)960548011
Fax : (+886)2-2652-8824
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