Kirk,
It is weather data from Stockholm and we have data that represent a so called standard year. The simulations are made during the periods October - April.. Some simulations are values for full year. I can not tell you exact periods for this specific calculations, since I do not have access to the calculations, only briefs of results that describes behavior and conclusions. Engelbrekt IsfŠlt who is one of the partners in our web site have recently done an extensive research in emission treatment of bricks. It show some quite remarkable results and resulted in some patents. At the moment they are working on licensing and test production. When the products are market ready, I think that we have a quite complete background material for descriptions of the effect of low emission materials. Hakan At 09:05 PM 9/25/2002 -0600, you wrote: >What is the assumed outdoor temperature these efficiency ratings are >calculated from? > >Kirk > >-----Original Message----- >From: Hakan Falk [mailto:[EMAIL PROTECTED] >Sent: Wednesday, September 25, 2002 5:47 PM >To: biofuel@yahoogroups.com >Subject: Re: [biofuel] Radiant barriers > > > >Caroline, > >I finally read trough the fact sheet from Department of Energy and they >seem to miss a few things about radiant barriers. They are studying and >measure the effect of radiant barriers with fixed air temperature and >without any other considerations. The assumptions and measurements does not >consider the effect on the effective temperature and comfort. > >Simulations show that with the same effective temperature (perception >temperature) the air temperature will be lower and the comfort factor >improve and it is verified by practical research. This means that in the >practical use, the air temperature will be lowered with 2-4 degree F with >the indirect saving 10 to 20% and the total saving between 15 to 25%. This >is also confirmed by the practical results from the studies of low emission >paints. > >http://energy.saving.nu/calculations/effectivetemp.shtml > >The problem with the fixation on air temperature and insulation, is that >they both only represent a smaller part of our environment and will not >represent the actual reality. By varying radiation factors, air >temperatures and humidity, it is possible to create a room with the same >perception of temperature, within an air temperature that ranges from 16 to >26 degree Celsius. The simplest way to study this is by field studies of >the practical result on energy use. It can also be studied by measurement >of effective temperature in built models or simulations that includes HVAC >system, effective temperature and comfort coefficient. > >Since you described your house, I am sure that you have experiences that >have a correlation with what I am saying. DOE's paper on radiant floors, >show similar discrepancies from realities. > >Hakan ------------------------ Yahoo! Groups Sponsor ---------------------~--> Sell a Home with Ease! http://us.click.yahoo.com/SrPZMC/kTmEAA/MVfIAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
