District or Utility Scale Geothermal

sellears

I am looking at the possibility of putting in utility scale geothermal for a new development of about 250 "homes" in our community. I am the Dir. of Public Works and so will be coordinating all utility planning/design/install for this development. Looking for examples of similar-scale projects in the ground throughout the US or abroad and also looking for consultants with experience in planning and vetting the concept. Located in Southern Wisconsin. Thanks.

Jamie Hall

Get in contact with Carleton College, Northfield, Minnesota. They have recently installed and commissioned a complete geothermal heat pump system for the entire campus, replacing a steam/hot water system.

Erin Holohan Haskell

@sellears, I recommend you contact geothermal expert Jay Egg (https://egggeo.com/).

And here's a residential community in Austin, Texas that's on a GeoGrid: https://www.whispervalleyaustin.com/ecosmart/

jumper

I think HongKong distributes sea water.

Jamie Hall

Folks, he's talking Wisconsin... not Texas or Hong Kong. A very different problem.

jumper

Jamie Hall said:

Folks, he's talking Wisconsin... not Texas or Hong Kong. A very different problem.

If you can distribute enough ground water; if the system does not end up with too cold or too warm water during lifetime of system; then what's so problematic about Wisconsin?

My guess is that OP will learn how economic his idea is.

EBEBRATT-Ed

Big project. The cost of the underground will be big $$$$$

Jamie Hall

jumper said:

Jamie Hall said:

Folks, he's talking Wisconsin... not Texas or Hong Kong. A very different problem.

If you can distribute enough ground water; if the system does not end up with too cold or too warm water durin @Eg lifetime of system; then what's so problematic about Wisconsin?

My guess is that OP will learn how economic his idea is.

Purely a matter of getting enough capacity in the cold weather. The system I mentioned has several hundred wells, all over the campus. As @EBEBRATT-Ed said. big dollars. I believe I'm correct in saying that an alum with even bigger dollars (the college has a few) was involved.

EBEBRATT-Ed

We did a geo job about 10 yeas ago and as far as I know i still is working well. But this was a restaurant probably had about 30 tons of cooling and heating. The groundwater loop took a lot of space

retiredguy

Before I retired I started two (2) H B Smith boiler which were part of a newly installed geo-thermal heating system. at the Laurel valley Elementary School in Ligonier, Pa. You could call them for answers as to how the system performed. The Engineering firm that designed that system and many others was The H F Lenz Company with offices in Johnstown, Pa; Conneaut, Ohio; and Pittsburgh, pa. They may be able to help you with the planning or recommend someone in your area that could provide the information or help that you desire.

jumper

Two kinds of geothermal. Loop transferring heat with ground. Or pumping water from lake or well to return somewhere elsewhere. I presume OP is talking about latter?

Jamie Hall

The one which I mentioned in Northfield, MN is loops in deep wells, transferring heat from the ground. It is a closed loop system, yes, but unlike some closed loop systems with a grid of pipes at some relatively shallow depths, this is the type with the loops in grouted deep wells.

hot_rod

Districtenergy.org is the trade association. Some projects in Canada also. Here is a map of systems from that site

jumper

Jamie Hall said:

The one which I mentioned in Northfield, MN is loops in deep wells, transferring heat from the ground. It is a closed loop system, yes, but unlike some closed loop systems with a grid of pipes at some relatively shallow depths, this is the type with the loops in grouted deep wells.

Why not have individual well for each home?

Jamie Hall

jumper said:

Jamie Hall said:

The one which I mentioned in Northfield, MN is loops in deep wells, transferring heat from the ground. It is a closed loop system, yes, but unlike some closed loop systems with a grid of pipes at some relatively shallow depths, this is the type with the loops in grouted deep wells.

Why not have individual well for each home?

Eh? It's a college campus -- not individual homes. You have all the academic buildings as well as ... I think 10 dormitories. 1300 students in residence. More or less.

psb75

Jamie, jumper is referencing the original poster's application of "geo" for a 250-home development.

Jamie Hall

Sorry. I had sort of assumed that @sellears , the OP, was interested in a district system for the development and that he or she had very good reasons for that preference...