Forum: Geothermal & Heat Pumps
11-27-15, 03:16 PM
|
|
Replies: 1,943
Views: 4,656,438
|
|
Forum: Geothermal & Heat Pumps
11-27-15, 01:58 PM
|
|
Replies: 1,943
Views: 4,656,438
|
|
Forum: Geothermal & Heat Pumps
11-27-15, 01:46 PM
|
|
Replies: 1,943
Views: 4,656,438
|
|
Forum: Geothermal & Heat Pumps
11-27-15, 06:38 AM
|
|
Replies: 1,943
Views: 4,656,438
Just re did calculations for Reynolds number...
Just re did calculations for Reynolds number (predictor of turbulent conditions) in each of the loop fields Len spoke of above. Here 0.75 inch internal diameter at 3 gallons per minute of water...
|
|
Forum: Geothermal & Heat Pumps
11-26-15, 03:08 PM
|
|
Replies: 1,943
Views: 4,656,438
Details on my "pump & dump" (open-loop)...
Details on my "pump & dump" (open-loop) geothermal situations.
Water sources are two 250 ft deep wells in multi-strata sand/shale/clay layers. Water table typically about 30-40 feet from surface. ...
|
|
Forum: Geothermal & Heat Pumps
11-26-15, 08:10 AM
|
|
Replies: 1,943
Views: 4,656,438
Just found a GREAT flow rate calculator that...
Just found a GREAT flow rate calculator that calculates diameter, velocity and flow rate. Put in two and it calculates the other in more units than I could imagine. Had to check my calculations for...
|
|
Forum: Geothermal & Heat Pumps
11-26-15, 07:50 AM
|
|
Replies: 1,943
Views: 4,656,438
|
|
Forum: Geothermal & Heat Pumps
11-26-15, 06:10 AM
|
|
Replies: 1,943
Views: 4,656,438
|
|
Forum: Geothermal & Heat Pumps
11-25-15, 05:37 PM
|
|
Replies: 1,943
Views: 4,656,438
AC - you make us laugh!
The take home point...
AC - you make us laugh!
The take home point is that you cannot have turbulent flows in any of the distribution fields as Len has described. I am wondering about just his supply and return pipes. ...
|
|
Forum: Geothermal & Heat Pumps
11-25-15, 01:25 PM
|
|
Replies: 1,943
Views: 4,656,438
Len,
15 gpm is a lot of water to move...
Len,
15 gpm is a lot of water to move through the pipe. Did you check Reynold's number to see if you are approaching turbulence? You will not in the parallel loops, but you may well be in the...
|
|
Forum: Geothermal & Heat Pumps
11-25-15, 08:28 AM
|
|
Replies: 1,943
Views: 4,656,438
|
|
Forum: Geothermal & Heat Pumps
07-10-14, 11:00 AM
|
|
Replies: 1,943
Views: 4,656,438
phreich,
Not AC, but have some thoughts.
...
phreich,
Not AC, but have some thoughts.
The best way to look at your costs is to look at what it costs to provide a BTU of heat or cooling. There are a number of spreadsheets on the web that...
|
|
Forum: Geothermal & Heat Pumps
12-12-13, 02:43 PM
|
|
Replies: 1,943
Views: 4,656,438
Florin,
All good ideas. I bet 1 ton (12,000...
Florin,
All good ideas. I bet 1 ton (12,000 BTU) would be sufficient heat so long as you can blow warm air around the inside of the boat.
The gallons per minute is not large ~ 2 (or about 8...
|
|
Forum: Geothermal & Heat Pumps
12-09-13, 06:38 PM
|
|
Replies: 1,943
Views: 4,656,438
|
|
Forum: Geothermal & Heat Pumps
09-05-13, 02:59 PM
|
|
Replies: 1,943
Views: 4,656,438
|
|
Forum: Geothermal & Heat Pumps
09-04-13, 08:14 AM
|
|
Replies: 1,943
Views: 4,656,438
AC,
I frequent the scrap yards and I am...
AC,
I frequent the scrap yards and I am amazed at the "scrap" copper that only has a marginal kink, dent or bend. Yes, I certainly do advocate using the best cost material that can be found.
...
|
|
Forum: Geothermal & Heat Pumps
09-03-13, 03:38 PM
|
|
Replies: 1,943
Views: 4,656,438
|
|
Forum: Geothermal & Heat Pumps
09-03-13, 11:35 AM
|
|
Replies: 1,943
Views: 4,656,438
Thumperoo,
I also love open loop (aka "pump...
Thumperoo,
I also love open loop (aka "pump and dump") and have one at my current home and farm. But city lots can't do that . . .
Yes, I agree that the thermodynamics of the open loop...
|
|
Forum: Geothermal & Heat Pumps
09-03-13, 07:55 AM
|
|
Replies: 1,943
Views: 4,656,438
Jeff,
As AC has mentioned (in the prior...
Jeff,
As AC has mentioned (in the prior post), many of the efficiency issues have been settled in the internal heat exchanger (HX). Yes, more can be done, but a lot of the issues have been solved...
|
|
Forum: Geothermal & Heat Pumps
09-02-13, 03:11 PM
|
|
Replies: 1,943
Views: 4,656,438
AC is correct, but sadly much of the flow in...
AC is correct, but sadly much of the flow in vertical and horizontal ground loops is laminar and not turbulent. Straight pipes have the highest laminar flow conditions, curled slinky just a bit...
|
|
Forum: Geothermal & Heat Pumps
09-01-13, 05:55 AM
|
|
Replies: 1,943
Views: 4,656,438
|
|
Forum: Geothermal & Heat Pumps
04-12-13, 08:28 AM
|
|
Replies: 1,943
Views: 4,656,438
Here is why a buffer tank is necessary. Almost...
Here is why a buffer tank is necessary. Almost all thermal systems have a series of loops. Typically, the loops on the periphery deal with conduction infiltration and have a large water flow and...
|
|
Forum: Geothermal & Heat Pumps
04-11-13, 10:48 AM
|
|
Replies: 1,943
Views: 4,656,438
Yup, the German Roth is very pricey. Look up...
Yup, the German Roth is very pricey. Look up WaterFurnace (made in Ft. Wayne IN) or ClimateMaster (made in Oklahoma City, OK) for comparable "026" water to water units. Their public websites have...
|
