Forum: Geothermal & Heat Pumps
10-06-18, 09:01 AM
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Replies: 1,943
Views: 4,634,093
made a tube in tube water to R22 exchanger
...
made a tube in tube water to R22 exchanger
36mm inside diameter PVC plastic pipe carries water
Inside the PVC pipe have 18 mm diameter coper pipe with R22 inside.
25 meters length = ...
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Forum: Geothermal & Heat Pumps
09-15-17, 10:07 PM
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Replies: 14
Views: 8,923
for a coax tube reference, I have a 70 ft long...
for a coax tube reference, I have a 70 ft long 3/4 copper inside 1-1/4" pvc evaporator on WSHP, 9 gpm flow. I get 5 Tons at COP of 5.2 for 56F entry water.
Scale accordingly for your 2T unit. ...
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Forum: Solar Power
10-14-16, 12:07 PM
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Replies: 157
Views: 89,254
One more PS:
What is great about this site...
One more PS:
What is great about this site are helpful pros like Steve: If you went to someplace like HVAC-talk.com for heat pump advice, all you would get from the 'pros' is a statement like:...
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Forum: Solar Power
10-14-16, 12:03 PM
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Replies: 157
Views: 89,254
How often do you need to clean them?
Posted...
How often do you need to clean them?
Posted before I say your question. The study from the early 80's I mentioned looked at the maintenance costs, specifically cleaning.
With the exception of...
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Forum: Solar Power
10-14-16, 11:57 AM
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Replies: 157
Views: 89,254
Was going to reply also, but like Pinball,...
Was going to reply also, but like Pinball, realized that Steve has just about said all you need.
Go for it if physically able. You will learn a lot also.
You did not say what your age is or...
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Forum: Conservation
07-27-16, 04:05 PM
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Replies: 11
Views: 8,335
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Forum: Renovations & New Construction
07-22-16, 06:07 PM
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Replies: 18
Views: 9,688
re:
Safe AS much rain water as you can
...
re:
Safe AS much rain water as you can
Read that due to water rights laws (first in time, etc) it is illegal in CO to even have a rain barrel without having state granted water 'rights'. You...
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Forum: Geothermal & Heat Pumps
07-13-16, 10:25 AM
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Replies: 31
Views: 17,505
If you are going to get an 80 CF bottle for...
If you are going to get an 80 CF bottle for welding also, get it filled with Argon, more useful for welding and only about $15 more (at least around here) for an Argon refill vs. nitrogen.
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Forum: Geothermal & Heat Pumps
07-11-16, 06:46 AM
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Replies: 5
Views: 5,139
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Forum: Geothermal & Heat Pumps
07-08-16, 10:32 PM
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Replies: 27
Views: 19,230
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Forum: Geothermal & Heat Pumps
06-18-16, 03:35 AM
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Replies: 20
Views: 14,152
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Forum: Geothermal & Heat Pumps
06-17-16, 04:54 PM
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Replies: 20
Views: 14,152
I use a propane tank painted appropriate EPA...
I use a propane tank painted appropriate EPA colors for the recovery cylinder.
A salvaged 1/2 T scroll compressor from a free CL AC unit is the compressor.
Had the 4T compressor fail on my...
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Forum: Conservation
06-01-16, 11:00 AM
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Replies: 189
Views: 161,341
3742.1
Have most of turbine welded...
3742.1
Have most of turbine welded up (pic), need to get the bearing supports welded up next, etc.
Grandsons did some of the welding, lots of technique for them to learn yet.
I'll...
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Forum: Appliances & Gadgets
03-31-16, 01:42 PM
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Replies: 2
Views: 3,651
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Forum: Conservation
03-31-16, 10:49 AM
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Replies: 18
Views: 12,727
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Forum: Conservation
01-12-16, 02:38 PM
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Replies: 13
Views: 9,473
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Forum: Conservation
01-10-16, 09:06 PM
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Replies: 13
Views: 9,473
I would suggest 3plink go online and pursue...
I would suggest 3plink go online and pursue 'psychometric chart'.
That is the basis for the questions he is asking.
After becoming familiar with the ps chart, 3 plink can find the weather...
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Forum: Geothermal & Heat Pumps
11-21-15, 11:01 AM
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Replies: 7
Views: 5,440
linear tube in tube HE
Cannot recall which thread I was going to put this in, so will post as a general thread.
Rather than a coil, my 5 T water to R22 (or R290) evaporator is simply tying a bunch of coaxial pipe...
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Forum: Geothermal & Heat Pumps
11-16-15, 11:26 PM
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Replies: 8
Views: 5,123
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Forum: Renovations & New Construction
03-15-15, 09:44 AM
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Replies: 10
Views: 11,429
cheap recycled building
Finished building a shop/studio/MIL apt 1600 sq ft building for son.
Not including own labor, Total cost (less permits) about $5 per sq ft! OF the total, $1k was oak flooring, $1K for mini split,...
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Forum: Conservation
01-24-15, 05:41 PM
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Replies: 100
Views: 128,034
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Forum: Geothermal & Heat Pumps
09-18-14, 01:26 PM
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Replies: 45
Views: 85,660
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Forum: Geothermal & Heat Pumps
08-26-14, 05:07 PM
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Replies: 10
Views: 8,382
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Forum: Lighting
02-19-14, 10:32 AM
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Replies: 11
Views: 8,761
PSE with heavily subsidizing
Next time you...
PSE with heavily subsidizing
Next time you are in SeaTac or in PSE area, and have the time, pickup some $3 each PSE 'instant rebate' 6.5W LED bulbs. You may need to have your bud get them, as...
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Forum: Lighting
02-08-14, 08:55 PM
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Replies: 11
Views: 8,761
re-use 'burnt out' T12 bulbs
Scored a score of 3 lamp electronic ballasts on ebay a few months back, for 3ea 32W T8 bulbs. About $4 ea ballast.
Have noticed that the 'burnt out' 40W T12 fluorescent tubes waiting to go to...
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