- #1
jake96
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Homework Statement
Hi guys, I have read this question over and over and have no idea where to start, would anyone be able to help.
The Question
Up to 20% of all heat lost in domestic dwellings occurs through walls. Many modern Australian homes are built by constructing walls using ‘cavity concrete blocks’ which have at least a 75 mm air gap or ‘cavity’ as part of their design.
Consider a home built using cavity concrete blocks and compare this to using two other construction materials; brick and aluminium siding. By investigating the heat flow through an external wall,
a) outline the range of assumptions you make.
b) determine, using appropriate calculations to support your answer, the required equivalent
thickness of a home's wall, in order to give the same amount of insulation as a cavity concrete
block wall if the wall is made of
i) brick.
ii) aluminium siding.
c) Discuss comparisons between the individual construction materials.
Thanks
Homework Equations
no idea
The Attempt at a Solution
don't know where to start