[Bldg-sim] Length of cooling (and heating) season

[Abela, Alan 2010 (PGR)]

Thanks all


Anything specific re cooling season rather than heating season


Even when it comes to degree days, I am not so sure about the selection of the reference temperature.

?


ALAN ABELA

Doctoral Research Student
School of Architecture, Design and the Built Environment
Nottingham Trent University
________________________________
From: Bldg-sim <bldg-sim-bounces at lists.onebuilding.org> on behalf of Julien Marrec <julien.marrec at gmail.com>
Sent: 03 July 2014 17:09
To: Max D
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Length of cooling (and heating) season

Sometimes it is mandatory and defined in the (local) law (ex: in NYC, heating season is October 1st to May 31st for multiple dwellings)

In other cases it's likely more a combination of common sense/following weather.

You could infer that pretty quickly yourself. Get some typical weather data, at least daily. Whenever you've got X days dropping below say 13.5°C/55°F (I think 2<= X <= 5 is appropriate), you're probably in heating season...

I just tested for NYC and it worked well. I also know in Paris, for affordable housing, they use that with X=2.

Best,
Julien
--
Julien Marrec, EBCP, BPI MFBA
Ingénieur en efficacité énergétique du bâtiment
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2014-07-03 16:44 GMT+02:00 Max D <lists at spacesustainers.org<mailto:lists at spacesustainers.org>>:
Hi Alan, just a thought - have you looked at Degree Day methods..?
http://en.wikipedia.org/wiki/Heating_degree_day

Best,
Max

> "Abela, Alan 2010 (PGR)" <alan.abela2010 at my.ntu.ac.uk<mailto:alan.abela2010 at my.ntu.ac.uk>> hat am 3. Juli 2014 um
> 16:32 geschrieben:
>
>
>
>
> Hi everybody
>
> This seems a really basic question to me, but  I have been unable to trace
> much information on it.
>
> What methods exist for the definition of the length of the heating and cooling
> seasons prior to the performance of an energy simulation.
>
> I am aware that the European Standard EN13790 provides a method for doing
> this, but are there are any other methods?
>
> Alternatively is there any record of established national practice, eg heating
> on from Dec to Mar in a particular country and cooling on from Jun to Sept?
>
> Sometimes simulation can generate cooling loads on a year round basis at
> certain times of day, although the cooling system is not normally on for 12
> months of the year.
>
> I am looking for a justifiable way to filter out these loads.
>
> Alan Abela
>
> Doctoral Research Student
> School of Architecture, Design and the Built Environment
> Nottingham Trent University
>
>
>
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