Standing Column Well - North Shore Long Island

The local talent " boots on the ground " is what we prefer here. Doing a SCW in sand is going to be a gamble IMHO. A costly gamble if it goes badly. Ask the local guy. He should know if anybody has pulled this off in your local. If it is a no go, at least you can rescue the well for other uses. A horizontal loop would work fine, or explore ways to tighten up your house and go with a higher efficiency conventional set up. Sometimes getting geo is like trying to put a round peg in the proverbial square hole. Knowing when it is not going to be a good fit prior to spending a wheelbarrow full of cash, makes you an expert! Keep us posted. A lot of the pros here do both geo and high efficiency traditional. Ask them and they will chime in with advice.
Eric

 

Great, hoping to get him here asap. We have just started to consider to install another well to dump back down into. Is there anything I need to know about water quality/soil type for this application? How many GPM do you think I would need for a 5 ton and 3 ton unit from the same well? Does the sandy soil affect anything? Thanks!

 

24 gpm would be your max demand. A pump and dump can be tuned down to as low as 1.5 gpm per ton reducing your demand by 1/2. Ask your local talent what they think. If they are positive about it, god on you! If they hesitate..... you have a answer.
Eric

 

So he went out to take a look and is going to price up dropping a dump well. He said he wouldn't pull more than 17GPM from an old well like that because you can pull up the screen from the bottom. I'm going to ask if we could pump from the new well and dump to the old, does that make sense? For what it's worth, I don't think this guy is a geothermal guy, he's a well guy. But he has been involved in a few pump and dumps before.

 

You need to have your existing well tested for water quality and capacity (extended pump down) before you make any decisions.

All manufacturers list minimum water quality for there equipment by coil type in the specification catalogs.

The rule of thumb for open loop with 50F or greater entering water is 1 1/2 GPM per Ton.

Take a look here if you want to find someone qualified in your area-
http://www.li-geo.org/

 

Ok thanks! I asked about the extended pump down and the guys said wells literally don't run out of water around here. What type of water quality specs should I be looking for?

 

ClimateMaster TE30 is here as an example on Page 24-
http://www.climatemaster.com/geothe...l-heating-and-cooling-installation-manual.pdf

Perhaps it is time to start a new thread in the Open Loop section.

 

How did it work out? I am in Mount Sinai and I have a similar situation.