pjc57
Registered Users
Posts:19
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| 05/08/2008 1:47 AM |
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Considering Geothermal. Already have a 3KW PV system.
I have a 25'x25' Cape with full dormer front and back with a 20'x20' single story addition. The main house has a full basement 25'x25'x 8' walls with concrete floor. The addition crawl space is 20'x20'x4' walls with R13 insulation and a concrete floor. There is no insulation in the floors above in either space. I currently have OIL FIRED STEAM HEAT in the main house and hot water baseboard in the addition, using the boiler water.
Ceilings 625' R20
400' R30
Walls 840' R13
Glass 210' R2 STD. Double glaze 1/2 space
3 Solid Entry Doors with storms
6400 degree days Hartford CT
My preliminary calculations concluded.
0 degrees - 36000 btuh
10 degrees - 31000 btuh
20 degrees - 26000 btuh
What temp do I design for?
What size closed loop WSHP?
I will keep the entire heating system in place for back up.
Thanks, Paul |
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geodean
Registered Users
Posts:416
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| 05/08/2008 9:02 AM |
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My heat loss program lists 7° as the design temp for Hartford. If you use 20° then your system will cost less but you will use your backup system more.
If you are hooking your heatpump up to a closed ground loop then you need a GSHP, if you are hooking up an open loop on a well then you would use a WSHP. The heating capacity of these two types of systems are different.
Since your other post asks about ground loops I am assuming that is what you are planning.
Also heating capacity varies by manufacturer and model.
A Climate Master Tranquility 3 ton unit has a heating capacity of 25,800 while a GS 3 ton unit has capacity of 26,700.
A Hydron 3 ton H series has capacity of 31,600 while a HC series 3 ton has capacity of 32,000.
So it really depends on which brand of heat pump you want to install
Hope this helps
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Dewayne Dean
PalaceGeothermal.com
Why settle for 90% when you can have 400%
We heat and cool with dirt! |
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GeoTemp Services LLC
Registered Users
Posts:22
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| 05/13/2008 11:13 PM |
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geodean you use Hydron Module???
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geodean
Registered Users
Posts:416
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| 05/14/2008 12:25 AM |
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Posted By GeoTemp Services LLC on 05/13/2008 11:13 PM
geodean you use Hydron Module???
Yes
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Dewayne Dean
PalaceGeothermal.com
Why settle for 90% when you can have 400%
We heat and cool with dirt! |
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tuffluckdriller
Registered Users
Posts:330
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| 05/14/2008 11:17 AM |
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| GeoTemp Services: What's wrong with Hydron Module? |
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Clark Timothy
VP sales, Tuff Luck Geothermal Drilling
Geothermal, Heating and Cooling that's Dirt Cheap! |
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GeoTemp Services LLC
Registered Users
Posts:22
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| 05/14/2008 7:28 PM |
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Nothing at all I know them well Im a GeoComfort distributor. Same manufacture.
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DrGhia
Registered Users
Posts:3
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| 05/31/2008 7:27 PM |
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| I live in northern Hartford County and I am considering a geothermal heat pump... My heat loss calculation for a older ranch with a (1999) Cape type addition, fluctuated with the program used. I have a total of 2200 sqft. on a full basement. The heat loss calculations ranges between 39,000 btu and 59,000 btu. The diy website that I have been talking to says a 4 ton unit would work and I could keep my newer Oil fired hot air system as an auxiliary.
My problem is loop type. 4 "slinky coils" will fit but I have to clear brush and trees on the back of my lot...
I guess my issue is, can you really do this yourself. I have used a back hoe to build a patio but not sure about the plumbing or how much of a pain in the but will the digging be.... But the $$$ savings is impressive. Raw materials alone about 10K vs. 20+K for a vertical system, I have not been able to find a contractor for horizontal systems to get a quote... |
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tuffluckdriller
Registered Users
Posts:330
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| 06/01/2008 1:38 AM |
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Please don't do it yourself.
As someone else stated on this site, those who diy typically post here with something like: "I installed my own system....help!"
It's certainly not rocket science, and there may be parts of the system you could do just fine. But I would recommend not opening that can of worms. Bad installations give geothermal a bad name, and you're much better off with a properly installed oil system than a poorly/wrongly installed geothermal system. |
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Clark Timothy
VP sales, Tuff Luck Geothermal Drilling
Geothermal, Heating and Cooling that's Dirt Cheap! |
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Brock
Registered Users
Posts:125
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| 06/01/2008 10:43 AM |
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| If you want to save some money find someone who will do the install, but allow you to do things you’re comfortable with. If the contractor says he needs a 250' trench dug and then later buried and you can do that, that alone will save you a bundle. Some of the other things you might be able to do yourself as well. But I would agree, have a contractor or someone in the business be the "general". |
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Green Bay, WI. - geothermal heated indoor pool with a small solar setup |
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