Hi all. I am ashamed to say that the excitement of cheap heating and cooling overcame my better judgement as an engineer and I after some research on this forum I am afraid I may be overestimating the capabilities of my well.
To make a long story short: I just purchased a house with no working heat. With a well, a pond/creek to dump into, and a blank slate to start from an open loop GSHP (dual fuel with NG for the coldest days) seemed like a nice option for the house. I had an anlysis done by the HVAC firm selling me the geo system and after measuring my flow they said I would have no problems. After reading some threads here on GSHP I see that sizing the well, pump, tanks, etc. can be a very complicated ordeal. Now I am extremely nervous that I may have made a bad mistake!
So here I am...looking to size a new pressure tank for the domestic supply and heat pump, I am hoping someone may be kind enough to provide me with some advice.
Here are the details of what I know today:
1) I will soon have a 3 ton 2 stage heat pump (climatemaster tranquility 27: model 038)
2) 4" case well down to 116 ft
3) Static water level of 14 ft. with drawdown to 42 ft after 3 hrs pumping at 22 GPM (measured almost 30 years ago...)
4) Current flow of 10.4 gal/min through a 50 ft. hose connected to an outside spigot
5) 1976 Submersible Red Jacket R75N1-12BC Pump (3/4 HP, 13 GPM capacity?)
6) Length of drop pipe 42 ft.
I essentially have a blank slate on the water side also and I am redoing this system from the well head out. My objectives are to:
1) supply the geo with adequate flow
2) recapture the geo water for my domestic supply
3) increase house pressure to normal levels with a booster pump (~60 psi)
4) maintain the life of the well pump as best I can...
Any advice you guys can provide on how to layout my system will be VERY appreciated. Thanks for contributing your free time to help out newbies like myself...
PS: the spent water from the open loop geo will be dumping in the back yard, down a fairly steep 30 ft. slope (30' drop), if I size my discharge pipes correctly could this help reduce the overall head on my pump??
To make a long story short: I just purchased a house with no working heat. With a well, a pond/creek to dump into, and a blank slate to start from an open loop GSHP (dual fuel with NG for the coldest days) seemed like a nice option for the house. I had an anlysis done by the HVAC firm selling me the geo system and after measuring my flow they said I would have no problems. After reading some threads here on GSHP I see that sizing the well, pump, tanks, etc. can be a very complicated ordeal. Now I am extremely nervous that I may have made a bad mistake!
So here I am...looking to size a new pressure tank for the domestic supply and heat pump, I am hoping someone may be kind enough to provide me with some advice.
Here are the details of what I know today:
1) I will soon have a 3 ton 2 stage heat pump (climatemaster tranquility 27: model 038)
2) 4" case well down to 116 ft
3) Static water level of 14 ft. with drawdown to 42 ft after 3 hrs pumping at 22 GPM (measured almost 30 years ago...)
4) Current flow of 10.4 gal/min through a 50 ft. hose connected to an outside spigot
5) 1976 Submersible Red Jacket R75N1-12BC Pump (3/4 HP, 13 GPM capacity?)
6) Length of drop pipe 42 ft.
I essentially have a blank slate on the water side also and I am redoing this system from the well head out. My objectives are to:
1) supply the geo with adequate flow
2) recapture the geo water for my domestic supply
3) increase house pressure to normal levels with a booster pump (~60 psi)
4) maintain the life of the well pump as best I can...
Any advice you guys can provide on how to layout my system will be VERY appreciated. Thanks for contributing your free time to help out newbies like myself...
PS: the spent water from the open loop geo will be dumping in the back yard, down a fairly steep 30 ft. slope (30' drop), if I size my discharge pipes correctly could this help reduce the overall head on my pump??