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 :xparty:

 

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 13162 in our Science Projects and Homework Forum, where these kinds of things go.

 

Hopefully you'll see an answer there soon!

 

Have Fun!

Buffy