Ive been paying the landlord (office landlord) for electricity. But now I (and he) realise half of the roof has not been properly insulated. So Id like to know how much wasted electricity/money has gone through the roof.
If my office is 4400 sq feet, second floor, modern with double glazed windows on three sides. Is there an industry standard I can apply that will estimate my energy consumption to heat it ? Or what goes through the roof.
Just a rough estimate based on some science will do as a starter for negotiation processes.
Cheers.
[url= http://www.arca53.dsl.pipex.com/index_files/tt7.htm ]Calculate the continuous los in Watts[/url] then multiply by 24 for the kWhs lost per day.
Assume U = .2 if there's the usual 200mm of insulation and U = 5 if there's no insulation at all.
Yes you can.
Calculate a loss through the current arrangement and the new arrangement and work out a wattage loss per m2 / per degree K.
So for example - old roof say 0.6 / new roof say 0.2 - difference over 4400sq ft (408m2) = 0.4 x 408 = 163 watts. However note that this is per degree K difference between inside and out.
So say 20 degrees inside / 5 degrees outside would equal 163watts x 15 = 2.4kwh per hour (call it 30p)
Cheers chaps - looks like I can get about 18k off my bill 🙂