[Equest-users] Medical equipments

Fred Betz fbetz at aeieng.com
Tue Nov 29 06:58:37 PST 2011


The USGBC/GBCI doesn't have much of a choice when accepting custom schedules, because they are based on user requirements and data, not USGBC mandates.

The two regulated items pertaining to schedules are that the Baseline schedules must be the same as the Proposed, and you should have around 25% of your energy as process loads. Even the last item is somewhat flexible depending on the circumstances.

We have used a number of custom schedules that are based on client input rather than "typical" schedules, and have never had any issues with it. It does help to include a note on the schedules in your narrative indicating that they are based on user feedback or metered data.

Real data on schedules is difficult to come by, so you should ask your client if they are willing to let you publish the data in some format. It would be helpful to the modeling community as a whole.

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: Chen, Ke-Huang [mailto:kehuang.chen at siemens.com]
Sent: Tuesday, November 29, 2011 12:02 AM
To: Fred Betz; Bruce Easterbrook
Cc: equest-users at lists.onebuilding.org
Subject: RE: [Equest-users] Medical equipments

Hi all,

If I get the information about the standby time, operation time of the equipments and the number of patient everyday from the hosipital (Estimate data provided by the hosipital).
Will USGBC believe in what I present to them if there is no certificate?
What should I need to do to convince them of the information?

Thanks for any help and suggestions.

Best regards,


KeHuang Chen
System Engineer
IC BT Division
Siemens Limited Taiwan

Tel : (+886)2-2652-8888 ext. 896
Mobile : (+886)960548011
Fax : (+886)2-2652-8824


________________________________
From: Fred Betz [mailto:fbetz at aeieng.com]
Sent: Wednesday, October 26, 2011 8:09 PM
To: Chen, Ke-Huang; Bruce Easterbrook
Cc: equest-users at lists.onebuilding.org
Subject: RE: [Equest-users] Medical equipments
The most important factor in that is knowing the hospital's census. What percentage of the beds are in use at any one time?

Then hospitals use a fairly typical work day where most procedures happen between 7am and 6pm, but there are exceptions.

Yes, you can create a separate electric meter under the utilities tab, and then assign the loads to that meter.

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: Chen, Ke-Huang [mailto:kehuang.chen at siemens.com]
Sent: Wednesday, October 26, 2011 5:56 AM
To: Fred Betz; Bruce Easterbrook
Cc: equest-users at lists.onebuilding.org
Subject: RE: [Equest-users] Medical equipments

Hi Fred,

Thanks for your information.
I also have a question about the schedule of medical equipments. Since it is only used when there is a patient, how do you schedule the medical equipments.
Is there any way I can schedule the medical equipments separately?

Many thanks for your any help.

Best regards,


KeHuang Chen
System Engineer
ICBT Division
Siemens Limited Taiwan

Tel : (+886)2-2652-8888 ext. 896
Mobile : (+886)960548011
Fax : (+886)2-2652-8824



________________________________
From: Fred Betz [mailto:fbetz at aeieng.com]
Sent: Tuesday, October 25, 2011 9:25 PM
To: Bruce Easterbrook; Chen, Ke-Huang
Cc: equest-users at lists.onebuilding.org
Subject: RE: [Equest-users] Medical equipments
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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