Ole Fanger deserves a lot of credit for defining comfort on a quantifiable basis, but there has been a lot of studies the past 20 years evaluating comfort under cooling conditions. If you're concerned about the appropriateness of the Fanger PPD/PMV for your situation, a good place to start looking would be this paper, "Developing an Adaptive Model of Thermal Comfort and Preference", by Richard de Dear and Gail Brager (1998):
http://escholarship.org/uc/item/4qq2p9c6#page-1
Joe
Joe Huang White Box Technologies, Inc. 346 Rheem Blvd., Suite 108D Moraga CA 94556 yjhuang@xxxxxxxxxxxxxxxxxxxxxxxx www.whiteboxtechnologies.com (o) (925)388-0265 (c) (510)928-2683 "building energy simulations at your fingertips"
On 3/21/2013 2:52 PM, nikolasspiliopoulos wrote:
I am glad for triggering this interesting conversation,and I would say that I agree with the last comment.But,I have to come in some conclusion for PPD acceptable levels to use them for my undergraduate thesis.So,which solution do you suggest me,for academic purposes??the "leave it up to the user to determine acceptability" one?
My building is located in Greece (Crete island).
Please let me know,because its a quite important issue for me
thank you all again!!
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Ooi" <ooi_kb3@...> wrote:
>
> i like Linda's comment 'leave it up to the user to determine acceptability' Prof Fanger did a lot of his work in Denmark, or regions that are far away from the equator. There or other indices, from others who did a lot of work in tropical countries notably Koenigsberger. Besides different climate classifications in different parts of Australia, comfort in its residential buildings depends on also whether there is a fan, three sizes available in its FirstRate software, or not. Recently ASHRAE, particularly 55, has emphasized on the effects of air movement and EnergyPlus has Adaptive Thermal Comfort index. ooi
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Linda Lawrie <linda@> wrote:
> >
> > There is the reference in the Eng Ref:
> >
> > ISO. 1983. "Determination of the PMV and PPD Indices and
> > Specification of the Conditions for Thermal Comfort", DIS 7730,
> > Moderate Thermal Environment, 1983.
> >
> > We calculate the indices -- but leave it up to the user to determine
> > acceptability.
> >
> > At 07:48 AM 3/20/2013, nikolasspiliopoulos wrote:
> > >Hello,
> > >I would like to ask something about FangerPPD.
> > >Does anybody know if there are any acceptable levels for this factor??
> > >Probably any value of PPD lower than 50% indicates that the majority
> > >of people is satisfied,but I am not sure.
> > >I didnt find something relevant,in Engineering Reference.
> >
>
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