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Forum: Renovations & New Construction 01-16-19, 11:57 AM
Replies: 11
Views: 11,205
Posted By WyrTwister
Get the highest SEER unit you can afford . I...

Get the highest SEER unit you can afford . I recommend 3 separate units , instead of a 3 head unit .

We have installed 2 units in our house , DIY . I had the vacuum pump and mosy of the...
Forum: Geothermal & Heat Pumps 11-03-14, 02:49 PM
Replies: 51
Views: 35,448
Posted By jeff5may
Since the size and capacity of your has changed,...

Since the size and capacity of your has changed, your cap tube is now incorrectly sized. I suggest replacing it with a txv that matches the capacity of the compressor. It will instantly solve your...
Forum: Geothermal & Heat Pumps 11-02-14, 04:12 PM
Replies: 51
Views: 35,448
Posted By jeff5may
V2 heat exchanger looks 100 times better than V1....

V2 heat exchanger looks 100 times better than V1. Well done!

If this one doesn't transfer enough heat for you as-is, you can improve on it the way it is.
You can either paint it or solder it. If...
Forum: Geothermal & Heat Pumps 11-02-14, 07:37 AM
Replies: 51
Views: 35,448
Posted By NiHaoMike
Here's a pump that should work fine for this...

Here's a pump that should work fine for this application:
http://www.amazon.com/Brushless-Solar-Water-Pump-Panel/dp/B00E0FXR6K/ref=sr_1_3?ie=UTF8&qid=1414934817&sr=8-3&keywords=solar+pump
It will...
Forum: Geothermal & Heat Pumps 11-01-14, 08:33 PM
Replies: 51
Views: 35,448
Posted By NiHaoMike
R290 heats less on compression and would be a...

R290 heats less on compression and would be a better choice for that application.
Forum: Geothermal & Heat Pumps 10-23-14, 11:51 AM
Replies: 51
Views: 35,448
Posted By Ron342
Winding and winding

First congratulations!
I'm dying to know how you did such nicely wound coils!
I tried salt filled 3/8 copper around the outside of 1 1/2 copper but had only marginal luck with it.
Nice thing about...
Forum: Geothermal & Heat Pumps 10-18-14, 05:52 PM
Replies: 51
Views: 35,448
Posted By jeff5may
Why insulate the center? The copper pipe will...

Why insulate the center? The copper pipe will have a positive effect on the heat transfer. If you want to restrict the flow, just stuff the pipe with copper or stainless steel pot scrubbers.
Forum: Geothermal & Heat Pumps 10-18-14, 04:56 PM
Replies: 51
Views: 35,448
Posted By Mikesolar
Try it out but you won't need to reduce anything....

Try it out but you won't need to reduce anything. It needs very low resistance and the flow rate is self limiting so no need to restrict it.

BTW, I assume you are a VW nut (?). Check out my...
Forum: Geothermal & Heat Pumps 10-18-14, 05:09 AM
Replies: 51
Views: 35,448
Posted By stevehull
I agree with Bernie. As currently built, only a...

I agree with Bernie. As currently built, only a small fraction (10%?) of the water will flow over the copper coil. But a simple solution exists. Just block off the interior central hole with a PVC...
Forum: Geothermal & Heat Pumps 10-17-14, 09:54 PM
Replies: 51
Views: 35,448
Posted By jeff5may
Definitely a good first time effort. Your concept...

Definitely a good first time effort. Your concept is not wrong, but there is a lot of room for improvement.

Look around for the best way to plumb the tank. It has been proven that plumbing in the...
Forum: Geothermal & Heat Pumps 10-17-14, 05:29 PM
Replies: 51
Views: 35,448
Posted By Mikesolar
OK, a couple of issues. I am assuming this is a...

OK, a couple of issues. I am assuming this is a thermosyphon system so all my comments are based on this assumption.

First, thermosyphon systems work when the the fluid path is like a circle with...
Forum: Geothermal & Heat Pumps 10-07-14, 05:22 AM
Replies: 51
Views: 35,448
Posted By Mikesolar
It is a "tube in shell" (official term, if there...

It is a "tube in shell" (official term, if there is such a thing). Assuming it is placed vertically at the bottom of the tank, it will heat the body of liquid within it which will simply rise to the...
Forum: Geothermal & Heat Pumps 10-07-14, 01:40 AM
Replies: 51
Views: 35,448
Posted By AC_Hacker
Acquario did a very similar HX...

Acquario did a very similar HX (http://www.tortosaforum.com/poolheater.html) for heating a swimming pool.

Here is how he did his coils:

http://www.tortosaforum.com/gallery/hxmk2_2.jpg

...
Forum: Geothermal & Heat Pumps 10-06-14, 12:14 PM
Replies: 51
Views: 35,448
Posted By jeff5may
That is known as a "high density" exchanger and...

That is known as a "high density" exchanger and if you mount it vertically it may not need a water pump. If you run a pump the water is going to need to do multiple passes to get hot.

Now, on to...
Forum: Geothermal & Heat Pumps 10-06-14, 09:28 AM
Replies: 51
Views: 35,448
Posted By berniebenz
Could be improved. Will have poor heat transfer...

Could be improved. Will have poor heat transfer because of very low water velocity in contact with cu tube. Water will flow straight thru the center.
Forum: Forum News & Feedback 12-03-12, 05:37 AM
Replies: 17
Views: 14,625
Posted By Mikesolar
Grundfos and others make a neat little magnetic...

Grundfos and others make a neat little magnetic do-hingy that you put on the end of your pump motor and it shows how fast it is spinning. Kinda specific but neat, none-the less. Beer is the only...
Forum: Forum News & Feedback 11-11-12, 10:21 AM
Replies: 17
Views: 14,625
Posted By ecomodded
My suggestions are A pack or 2 of LED light...

My suggestions are

A pack or 2 of LED light bulbs

A watt meter

A Solar power design book, for DIY

A Geothermal book for homeowners
Forum: Appliances & Gadgets 10-02-12, 04:05 PM
Replies: 6
Views: 7,030
Posted By MN Renovator
I know a guy who will drop a business card and a...

I know a guy who will drop a business card and a note in peoples paper boxes when he sees a car that he likes that's been parked where the vegetation has grown in around it. He collects various...
Forum: Solar Heating 09-16-11, 11:33 AM
Replies: 59
Views: 67,764
Posted By strider3700
for comparison this fan looks comparable but is...

for comparison this fan looks comparable but is less then half the price Newegg.com - Scythe DFS123812-3000 "ULTRA KAZE" 120 x 38 mm Case Fan...
Showing results 1 to 19 of 19

 
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