Thursday

April 17, 2014

April 17, 2014

Posted by **Becky** on Saturday, October 8, 2011 at 12:28am.

. We will take the thickness of the walls and ceiling to be L(wall) = 12 cm. Assume that the house is a cube of length L = 9.0 m on a side. Assume that the roof has very high conductivity, so that the air in the attic is at the same temperature as the outside air. Ignore heat loss through the ground.

a)What is H, the total rate of energy loss due to heat conduction for this house?

b)Let us assume that the winter consists of 150 days in which the outside temperature is 0*C on average. This will give the typical number of "heating degree days" observed in a winter in Vancouver. Given that heating oil has an energy content of 35 MJ per litre when burned, how much oil will be needed to supply the heat lost by conduction from this house over a winter? Assume that the heating system is 75% efficient.

**Related Questions**

Statistics - What percentage of college students are attending a college in the ...

college physics - how can i find heat capacity of silver without there being a ...

Physics - My question is two parts How many calories of heat energy would it ...

Math-Statistics - A marketing research company needs to estimate which of two ...

college-- chemistry - I am having a problem with this problem from my homework. ...

Physics - I'm understanding most of this physics, but here is one last question ...

math - Problem The latent heat of fusion (solid become liquid) for ice is 79.8 ...

Math - I cannot figure this problem out. I have did it several ways and get ...

Physics - A 50.0 g silver spoon at 20.0 degrees Celsius is placed in a cup of ...

College Chem - 4. Write the balanced equation for CH4+Cl2„_CH2Cl2+HCl6. For the ...