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# Can you solve this??? watch

1. An irregular shaped single storey school measures 70m x 25m x 3m high. Including glazing, the external walls have an area of 2000m2. The total area of the glazing is 750m2. The building will be maintained at 22oC and assume a winter design temperature of -2oC. Assume there will be no internal losses.

Data:
Rate of infiltration 1.5 air change per hour
U-value of external walls 0.32 W/m2K
U-value of windows 1.6 W/m2K
U-value of floor 0.30 W/m2K
U-value of roof 0.25 W/m2K

Calculate the heat loss in kW including a 10% margin.

2. Decent question lol, might forward it to my math teacher if you're having trouble later on
3. Please do, I've no idea how it's done, teacher just handed it to me and said figure it out.. No notes I dont even know what the hell the title is to research for formulas >.>
4. (Original post by Blindsidev1)
Please do, I've no idea how it's done, teacher just handed it to me and said figure it out.. No notes I dont even know what the hell the title is to research for formulas >.>

http://www.tombling.com/heaters/heatloss.htm
5. Are you sure that is the correct formula , nothing about those figures in the table to the right were talked about?
6. no I'm not, although the method of caculating heat loss seems to be the same on the few web sites I looked at, I doubt many people on the student room maths forum are structural engineers so I'm suggesting you use google to research the formulae you might use with the information you have been given.

another e.g. http://www.arca53.dsl.pipex.com/index_files/tt7.htm

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Updated: March 23, 2011
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