Discussion in 'Geothermal Loops' started by Mark Custis, Apr 23, 2010.
I am back in Massillon, Ohio and will pressure test our spring developement system this week.
Please keep us posted as this idea has been talked to death, and argued at length add nauseam. Real world data is what is lacking. Enter Mark.
when I have the data I will post it here.
I'm new here so please excuse my question if it's been asked before...
Where can I find out more about this and how is your progress/results?
You may call me,
I am thinking this up as I go.
(9 & 10....there now I have enough characters for my message to post
We started her up July 4, 2010
She ran with what I would consider a large load of 89* at 92% RH. I went to bed. The next morning we had reached set point of 72* with the RH down to about 45. The tank when we started was at 64* EWT and at 65* the next day.
Some quick stats:
500 gallon tank
Unscientific measurement of 24 gpm from the spring head.
Four tons of cooling ran 12 hours to get rid of the sensible and latent load.
The water perffed our 3/4" refrigeration tubing in under four months, so we replaced the copper with four three hundred foot rolls of SDL 11 HDPE. That was a job I will not do again as we had to unroll the pipe outside of the tank and reroll the pipe inside the tank.
We are headed back to the job in about ten days to add controls, pressure gauges and thermometers. I still have to order the custom sheet metal and install it before I can do any real testing.
My gut is this will work fine. Gabby's thermometer told us when we did the dig that I could get 55* water or so all winter. I ran a bell curve based on that EWT and the heat loss of the home against design day weather and I calculate about a 90% geo fraction year round.
Our customer is a brave soul and has opped to not install the hydronic natural gas fired auxiliary heat system until we see how we do in real life this winter. (He does have back up, just not automatically)
Congrats Mark, this is all really good stuff!!! Keep us updated.
Any update on this?
The customer declined further service. I was into doing a lot more work to provide numbers for this type of system.
I did learn enough by doing this that I can do it again.
So can you give a synopsis of the potential of that tank?
Can a system like this support 5 tons?
The limiting factor
is not the tank, but the water flow from the spring.
Given enough water flow I am sure we could support aa 5 ton system.
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