[Bldg-sim] Typical hot water usage in commercial buildings

Karen Walkerman kwalkerman at gmail.com
Fri Jul 16 04:37:59 PDT 2010


It is my understanding that the user's manual btu/day/person is btu's used
at the tap.  Depending on supply water temperature, you can figure out the
flowrate, and then apply your equipment efficiency.

--
Karen

On Thu, Jul 15, 2010 at 10:55 PM, Joe Huang <
YJHuang at whiteboxtechnologies.com> wrote:

> Thanks for the information. I'll look for a copy of the User's Manual.
> However, I'm trying to move away from Btu/h to gallons/day or gallons/hr
> profiles that would allow me to account for differing boiler efficiencies as
> well as entering water temperatures by location.
>
>
> Joe Huang
> White Box Technologies, Inc.
> 346 Rheem Blvd. Suite 108D
> Moraga CA 94556
> (o) +925 388 0265
> (c) +510 928 2683
> yjhuang at whiteboxtechnologies.com
> www.whiteboxtechnologies.com
>
>
> Craig Gann wrote:
>
>>  The ASHRAE 90.1 User's Manual lists typical hot water consumption for
>> various building types (P. G-32). For offices it is 175 Btu/h per person.
>> They also have representative hourly usage schedules.
>>
>> Regards,
>>
>> Craig J. Gann, P.E. LEED AP
>> www.EnergySimulators.com <http://www.EnergySimulators.com>
>>
>>
>> On 7/15/2010 6:17 PM, Joe Huang wrote:
>>
>>> Does anyone have default values for the amount of hot water used per day,
>>> either per person or per floor area, preferably the former, in commercial
>>> buildings by building type, i.e., offices, hotels, retail,
>>> supermarket, schools, hospitals, etc. ?
>>>
>>> I'm trying to clean up my prototypical commercial building models and
>>> found those inputs to be highly questionable.
>>>
>>> Thanks.
>>>
>>> Joe Huang
>>> White Box Technologies, Inc.
>>> 346 Rheem Blvd. Suite 108D
>>> Moraga CA 94556
>>> (o) +925 388 0265
>>> (c) +510 928 2683
>>> yjhuang at whiteboxtechnologies.com <mailto:
>>> yjhuang at whiteboxtechnologies.com>
>>> www.whiteboxtechnologies.com <http://www.whiteboxtechnologies.com>
>>>
>>>
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