Turn on thread page Beta
 You are Here: Home >< Physics

# Please help! No-ne seems to know this area of physics!! watch

1. Looking for a bit of feedback for the following question:
Compare the rate and flow of heat per unit area through a solid brick wall and that of a cavity wall, filled with insulating foam. Assume steady state conditions,parallel flow and that the outside and inside temperatures are 21 cent and 1 cent respectivley.Solid brick wall=200mm thick. Cavity wall=brickd 2x100mm thick, with 50mm cavity.talk about surface resistance too.
2. (Original post by sazzarooo)
Looking for a bit of feedback for the following question:
Compare the rate and flow of heat per unit area through a solid brick wall and that of a cavity wall, filled with insulating foam. Assume steady state conditions,parallel flow and that the outside and inside temperatures are 21 cent and 1 cent respectivley.Solid brick wall=200mm thick. Cavity wall=brickd 2x100mm thick, with 50mm cavity.talk about surface resistance too.
is this like thermal stuff?

cos i know about steady state i think
3. (Original post by andyj72)
is this like thermal stuff?

cos i know about steady state i think
yes-
4. its about energy going from a hot environment to a cold environment where the hot environment has a constant input of energy, steady state, but ive never had to do any calculationsfor that sort of stuff. what exam board are you on?
5. Is this a synoptic question, if it is i think i've done it.My teacher bought a book with loads of them in. If it is the same question everything is analogous to electrical equations, mainlyV=IR. The difference in temperature is like the potential difference, I think you are given a thermal resistance co-effcient for every material used, which is analogous to resistivity. Multiply this by the length of each material used, this gives resistance per unit area, then you can work out "I/A", where I represents heat flow.
6. is this edexcel???
7. Thankyou ever so much for your feedback. I had almost given up with anyone coming up with anything. James-your feedback is spot on and although it is knew to me I am beginning to get a grasp of it. Cheers.
With only a week to go and my portfolio still incomplete-I am offski now to get on with the finishing touches.
Thanks again!

Turn on thread page Beta

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: June 13, 2005
The home of Results and Clearing

### 3,091

people online now

### 1,567,000

students helped last year
Today on TSR

### University open days

1. London Metropolitan University
Sat, 18 Aug '18
2. Edge Hill University
Sat, 18 Aug '18
3. Bournemouth University
Clearing Open Day Undergraduate
Sat, 18 Aug '18
Poll

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE