Intro

[Daniel Durrant]

Greeting All,

I am nearly 42 and haven't had to do any algebra for 26 years. I am studying to become an Eco Home assessor. I have an exam on 14/11/07 and could do with some help with a couple of calculations.
The people running the course have not replied to my emails asking for help so I am on my own.
Is this the kind of thing your forum could help with?

If so, the one I am struggling with at the moment is understanding the formula for calculating energy used appliances in Zero Carbon Homes.

kg CO2/year from appliances and cooking:

99.9 x (TFA x N)0.4714 - (3.267 X TFA) + (32.23 x N) + 72.6
Where TFA is the Total Floor Area and N is the Number of Occupants
For TFA < 43m2; N = 1.46
TFA ≥ 43m2; N = 2.844 x (1 - exp(-0.000391 x TFA2))

I have cut and pasted this and the figure 0.4714 is written in smaller numbers as is 2 in m2 so I asume this means 0.4714 squared

I am using 70.98m2 as the floor area so need to understand what exp means to calculate number of occupants.
I also don't understand how to apply 0.4714

Hope this wasn't too long for an Intro

Any help would be greatly appreciated.

Kind regards

Daniel

[Buffy]

Greetings Daniel!

This is the kind of thing we do do around here: I saved you some work and copied your post to a new thread called "Eco Home Math Problem" (click here to go to it) in our Science Projects and Homework Forum, where these kinds of things go.

Hopefully you'll see an answer there soon!

Have Fun!
Buffy