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re: energy audit
19 oct 2003
daestrom wrote:
>and you know, i've read that darn refrigerator manual from cover to cover,
>and i can't find anywhere in it where it tells me the unit draws 3 watts
>when the compressor is off. nor anywhere that explains the compressor unit
>and phantom 3 watts combined draw an average of 87 kwhr in a 720-hour month.
>
>guess george's manuals are more complete than the ones here in the us.
let's be fair. george mentioned an alternative. if he wanted to measure the
power consumption of an 11 w cf bulb to say, 1% with a house meter with 1 kwh
resolution, he might turn off everything else in the house and wait till the
meter reading increased by 100 kwh, after 100kwh/11w = 9091 hours, ie about
379 days. he could then proceed with the next appliance.
this might go faster if he kept a diary with frequent meter readings and noted
the exact times when every appliance in the house was turned on an off, for
a year or so. given such a huge detailed list, george could surely develop
a spreadsheet to analyse it and estimate the energy usage of each individual
appliance to within 1%.
nick
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