00:01
How much money would the owner expect to save each year? okay, so we first need to calculate our heat loss.
00:09
Q is equal to our area times our change in temperature over r, the r value for insulation.
00:16
So before insulation, it's going to be 1300 times 70 minus 40 divided by 11.
00:23
And after insulation, we get 1300 times 70 minus 40 divided by 40.
00:29
Now, if we want to calculate how much money would the owner expect to save? so, before insulation, we can calculate this.
00:49
And so, we can find our energy saved in btu to be 129 ,551 ,81 .8 btu.
00:58
Then we can convert this to kilowatt hours, which is equal to 3797 .5 kilowatt hours.
01:06
Now, our dollar savings amount is going to be equal to this value of 3795 .5 times our 0 .8 kilowatt hours.
01:19
We get 303 .6...
