Good Graphic
Last Post 30 Nov 2008 07:34 AM by dkiernan. 5 Replies.
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Palace GeothermalUser is Offline
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29 Nov 2008 12:43 PM
This tells an important story

Attachment: Resize of ScreenHunter_8.jpg

Dewayne Dean

<br>www.PalaceGeothermal.com<br>Why settle for 90% when you can have 400%<br>We heat and cool with dirt!<br>visit- http://welserver.com/WEL0114/- to see my system
engineerUser is Offline
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29 Nov 2008 08:53 PM
Minor quibbles:

1) I assume the CCF shown for Propane is a cut / paste error, and that the intended unit is gallons. In that case, the Btu value for a gallon of propane is closer to 92k Btu. A CCF of Propane would contain approx 250,000 Btu, but nobody buys the stuff that way as far as I know.

2) Unit for fuel for geo ought to read Kwh, not KW.

3) I was a bit confused by "electric parasetic effect", until I guessed that the factor represents an allowance for electricity used by propane or oil furnace. That would be a "parasitic" effect. Just to be certain, I Googled "parasetic" and an expanded version of that chart showed up on the first page...from Northeastgeo.

Minor issues aside, still a good chart.


Curt Kinder <br><br>

The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is - Winston Churchill <br><br><a href="http://www.greenersolutionsair.com">www.greenersolutionsair.com</a>
TechGromitUser is Offline
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29 Nov 2008 10:35 PM

Do you have an Excel version you can attach? I think it would be very useful for someone trying to figure out the figures based on the variable of what Gas, Oil, and electric costs in there local region, instead of ballpark figures.  

 

 



engineerUser is Offline
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29 Nov 2008 11:09 PM
Go to northeastgeo / homeowners / operational cost modeling for the complete spreadsheet. You can input your own fuel unit costs and COP. You can also download the Excel and use it offline.


Curt Kinder <br><br>

The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is - Winston Churchill <br><br><a href="http://www.greenersolutionsair.com">www.greenersolutionsair.com</a>
retiredengUser is Offline
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30 Nov 2008 01:02 AM
If your looking for an unbiased calculator that has regional (northeast) up-to-date information try this:
http://nhclimateaudit.org/calculators.php
It has fields that you can change for your local fuel prices and efficiency.

If your looking for a spreadsheet (that is a little more complicated) to run on your computer download this:
http://www.eia.doe.gov/neic/experts/heatcalc.xls




dkiernanUser is Offline
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30 Nov 2008 07:34 AM
I used the nhclimateaudit site suggested by retiredeng to calculate my cost of heating here in RI. I just bought oil at $2.04/gal and I pay $.22/kwh for electricity. The result was 18.93/million btu for oil and $16.12 for geo. I am pretty certain that oil prices will eventually take off again and I love the idea of geo, but for now considering the high initial installation cost(about 50K for my home) and lack of qualified installers in my area I am going to keep watching and waiting.


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