How do I calculate my energy usage savings month to month, compared to last
year (pre insulation upgrades,) when the monthly average temperature is
different.
Example: 2007, use 110 ccf, 33 bill days, 34 degree avg. temp. 2006 use
86, 31 days, 42 degrees.
Energy Savings Payback
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Comments
Doris Penndorf
22 Dec 2007, 14:14
22 Dec 2007, 14:14
AsktheBuilder
22 Dec 2007, 14:48
22 Dec 2007, 14:48
Doris,
You have to get the weather data and see how many heating-degree days each day was that you are trying to compare. If the thermostat setting was not constant on all days, you can't do the calculations.
You have to get the weather data and see how many heating-degree days each day was that you are trying to compare. If the thermostat setting was not constant on all days, you can't do the calculations.
Doris Penndorf
23 Dec 2007, 10:53
23 Dec 2007, 10:53
Tim - thanks for your quick reply. With all the push to insulate, etc. how
can any company/gov. say you will save a certain % by doing xyz. Just
pondering.... Love your site!
AsktheBuilder
23 Dec 2007, 11:13
23 Dec 2007, 11:13
Doris,
Easy! With accurate scientific testing and measuring!
Easy! With accurate scientific testing and measuring!
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