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Re: GBlist: Re: Greywater & Lighting in NYC
In another message I mentioned that occupancy sensors are not a problem
vis-a-vis energy use of the ballast. It is certainly true that they are
a waste of money if they are not used in a space with intermittent
occupancy. If the lights are turned off anyway (conscientous people)
then you're talking about a very expensive light switch and if the space
is used constantly the savings will be very small. The NYS Energy Code
requires individual switching for large spaces and I *believe* requires
occupancy snesors in new construction in many or all cases.
kwright@SMTP-ROCKVILLE.dynamac.com wrote:
>
> Marilyn,
>
> I had never heard that before. The US EPA Green Lights program
> recommends them, however after further reading I've discovered that
> they do recommend them for spaces where "occupancy is infrequent or
> unpredictable, such as private offices, conference rooms, storage
> rooms, or rest rooms".
>
> The more I think about it, the less appropriate they are for the home,
> especially if they use that much energy to turn on.
>
> I suppose it depends on how much energy the sensor takes to start and
> run versus how often people forget to turn off the lights for long
> periods of time. Did the people at Phillips give you any numbers for
> the energy requirements?
>
> Thanks for the info.
>
> Ken
>
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--
Warren C. Liebold
wliebold@waonline.com
wliebold@pppmail.nyser.net
Director of Conservation
New York City Department of Environmental Protection
__________________________________________________________________
This greenbuilding dialogue is sponsored by Oikos (www.oikos.com)
and Environmental Building News (www.ebuild.com). For instructions
send e-mail to greenbuilding-request@crest.org.
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