01-05-14, 10:18 AM | #1 |
Steve Hull
Join Date: Dec 2012
Location: hilly, tree covered Arcadia, OK USA
Posts: 826
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graphical analysis of GT heat pump
My electric utility has a data logger that gives graphs and data for daily electrical consumption and the average temperature for that interval.
I grabbed about two months of data and plotted average temp vs. kWhrs for each day. I have geothermal heat pumps in both houses and I expect that the colder it gets the more consumption Not surprisingly, the above is true, but I was surprised at how linear the relationship was. To be truthful, I have used this analysis for other companies and homes and it works when you have a meter you can interrogate (or look at) on a consistent basis (natural gas meter for example). For this, I looked up our local winter degree days and average winter temp. From that, I can find from the graph, the average daily kWhr consumption and the statistical length of winter. By observing where the electrical consumption is at 65 F, I can account for basal use. Subtracting total from basal use, I can see just how much just heating costs. Mind you, I must appear rather extravagant to many uses here, but this accounts for two homes, barn office, pumps for water (livestock) and heaters to keep livestock waterers from freezing. Now I post and see if converting the Excel spreadsheet to a PDF and loading that helps. Thanks Daox! Steve
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consulting on geothermal heating/cooling & rational energy use since 1990 Last edited by Daox; 01-06-14 at 08:18 AM.. |
The Following User Says Thank You to stevehull For This Useful Post: | Daox (01-06-14) |
Tags |
graphical analysis, heat pump |
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