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Search: Posts Made By: GaryGary
Forum: Solar Heating 01-09-20, 12:59 PM
Replies: 8
Views: 1,347
Posted By GaryGary
Hi, Don't know if this is still a current...

Hi,
Don't know if this is still a current project for you, but a little info on your questions...

Heat Stored in Water:

Heat Stored = (specific heat of water)(Thi - Tlow) (weight of water)
...
Forum: Solar Heating 01-09-20, 12:12 PM
Replies: 11
Views: 1,210
Posted By GaryGary
Hi, Here is an interesting solar air to...

Hi,

Here is an interesting solar air to water heater that goes a long ways back, but is very simple.
https://www.builditsolar.com/Projects/WaterHeating/SolarAirWaterHeater.pdf

The air to water...
Forum: Solar Heating 03-09-18, 11:27 AM
Replies: 3
Views: 5,617
Posted By GaryGary
Hi, Here is a simple crawlspace solar heater I...

Hi,
Here is a simple crawlspace solar heater I did:
https://www.builditsolar.com/Projects/SpaceHeating/MiniPolySunspace.htm

https://www.builditsolar.com/Projects/SpaceHeating/0036.JPG

It was...
Forum: Solar Heating 03-09-18, 11:17 AM
Replies: 3
Views: 2,319
Posted By GaryGary
Hi, Looks great! Mine is more than 10...

Hi,
Looks great!

Mine is more than 10 years old now and still going strong.

Only change I've made was to change the lower glazing panels from Acrylic to twinwall polycarbonate after banging...
Forum: Renovations & New Construction 09-14-16, 07:35 PM
Replies: 30
Views: 4,797
Posted By GaryGary
Hi, It seems like the most expensive and labor...

Hi,
It seems like the most expensive and labor intensive part of your floor is the concrete.

We use pex with alum heat dispersion plates air stapled to the subfloor over a conditioned crawl...
Forum: Solar Heating 03-11-15, 04:48 PM
Replies: 5
Views: 1,507
Posted By GaryGary
Hi, Norm put a lot of thought and work into his...

Hi,
Norm put a lot of thought and work into his scheme for supporting and separating the copper hx coils in his tank:
Solar Hot Water and Space Heating System With Integrated Boiler...
Forum: Solar Heating 03-11-15, 11:07 AM
Replies: 13
Views: 8,978
Posted By GaryGary
A little more. This email response from Mike at...

A little more.
This email response from Mike at IBC North America (http://www.ibcna.com/)

"150 F is the max
people put up to 180, but we don't recommend it."

The question to him was: What is...
Forum: Solar Heating 03-11-15, 10:58 AM
Replies: 13
Views: 8,978
Posted By GaryGary
Hi, I did a little more searching around on the...

Hi,
I did a little more searching around on the IBC totes.

Talked to Hoover in Nebraska. Asked about using IBC totes for solar heated water storage.
He said that the lighter wall thickness...
Forum: Solar Heating 03-10-15, 02:06 PM
Replies: 13
Views: 8,978
Posted By GaryGary
Hi, I asked one of the makers of rotomolded...

Hi,
I asked one of the makers of rotomolded polyethylene tanks what temperatures the tanks could withstand -- the answer was:

"Our tanks are rated to spike at 140 and run a constant temp of 120....
Forum: Conservation 02-04-13, 10:07 AM
Replies: 100
Views: 73,365
Posted By GaryGary
Thanks, That's a thought, but I'd like to avoid...

Thanks,
That's a thought, but I'd like to avoid the 2nd heat exchanger if possible.
Maybe there is some way to make use of the cold outside air temps.

One thing that puzzles me is that the air...
Forum: Conservation 02-02-13, 08:42 PM
Replies: 100
Views: 73,365
Posted By GaryGary
Hi, I finished up the first cut at one version...

Hi,
I finished up the first cut at one version of a heat exchanger to recover heat from the dryer exhaust, and did some testing on it.

The heat exchanger is made from some used twinwall...
Forum: Other Improvements 01-31-13, 07:39 PM
Replies: 5
Views: 2,576
Posted By GaryGary
Hi, We have a recurring problem with ice dams...

Hi,
We have a recurring problem with ice dams on one part of our roof.

I've did as much as possible on the insulation front, but still got the ice dams.

What I found works is to get a "roof...
Forum: Solar Power 01-29-13, 09:21 PM
Replies: 35
Views: 9,402
Posted By GaryGary
Hi, I have a 2.2 KW Enphase inverter system --...

Hi,
I have a 2.2 KW Enphase inverter system -- going on 3 years old.

Have not had any problems or failures.

At the time I did mine, the microinverters cost about the same as a single string...
Forum: Tools 01-23-13, 08:15 PM
Replies: 9
Views: 3,926
Posted By GaryGary
Hi, Here is a paper on bags and other simple...

Hi,

Here is a paper on bags and other simple air measurement:
http://www.builditsolar.com/References/Measurements/GarbageBagAirflowlbnl-51550.pdf

and some more:...
Forum: Appliances & Gadgets 01-10-13, 09:25 PM
Replies: 18
Views: 6,269
Posted By GaryGary
Hi, Bubblewrap on windows has a less than one...

Hi,
Bubblewrap on windows has a less than one heating season payback in our climate. Actually, it has a zero days payback if you get the bubble wrap free :)

The $22 sunspace in the Feb 2005...
Forum: Conservation 12-19-12, 11:23 AM
Replies: 100
Views: 73,365
Posted By GaryGary
Hi, I do plan to have a blower in the outside...

Hi,
I do plan to have a blower in the outside air path and use the dryers blower for the dryer exhaust path. I've got an Elucent blower that appears to be about the right size -- I think it might...
Forum: Conservation 12-19-12, 11:16 AM
Replies: 100
Views: 73,365
Posted By GaryGary
Hi, The one in the link is not actually mind --...

Hi,
The one in the link is not actually mind -- its Al's.

I did send him an email, and he reports its still working well, and that he has not had any condensation problems.

This is part of the...
Forum: Conservation 12-17-12, 09:19 PM
Replies: 100
Views: 73,365
Posted By GaryGary
How about this one! Dryer heat exchanger...

How about this one!

Dryer heat exchanger (http://www.alkeng.com/AL/dryer)

"performance is quite good. Access holes for a digital thermometer in the top two compartments show air from the dryer...
Forum: Conservation 12-17-12, 09:07 PM
Replies: 100
Views: 73,365
Posted By GaryGary
An interesting commercial clothes dryer heat...

An interesting commercial clothes dryer heat exchanger:

ROTOTHERM - Too Good To Be True? Not Always (http://www.rototherm.net/art_01.html)

"Ramada Achieves 50% Fuel Reductions with Laundry...
Forum: Conservation 12-17-12, 05:01 PM
Replies: 100
Views: 73,365
Posted By GaryGary
Hi, Those numbers don't seem that bad to me. ...

Hi,
Those numbers don't seem that bad to me.

There are 115 million households in the US, and if they typically run the dryer once a day, your chances of have a dryer fire on a given run are about...
Forum: Conservation 12-17-12, 03:17 PM
Replies: 100
Views: 73,365
Posted By GaryGary
Hi, Here are the pictures of the "throwaway"...

Hi,

Here are the pictures of the "throwaway" prototype of the dryer heat exchanger

Untitled 1 (http://www.builditsolar.com/Experimental/DryerHX/DryerHXProto.htm)

Any suggestions would be...
Forum: Conservation 12-17-12, 10:04 AM
Replies: 100
Views: 73,365
Posted By GaryGary
Thanks -- that heat exchanger is beautiful. ...

Thanks -- that heat exchanger is beautiful.

I like the counterflow in that it appears that about the best efficiency you can get from a cross flow is in the 60 to 70% range, and the counter flows...
Forum: Conservation 12-16-12, 10:36 AM
Replies: 100
Views: 73,365
Posted By GaryGary
Hi, In this paper:...

Hi,

In this paper: http://www.ewp.rpi.edu/hartford/users/papers/engr/ernesto/pastor/MEP/Other/References/Counter%20Flow%20Heat%20Exchanger.pdf

They describe a counter flow heat exchanger that...
Forum: Conservation 12-15-12, 09:50 AM
Replies: 100
Views: 73,365
Posted By GaryGary
Decided to try a sort of throwaway prototype to...

Decided to try a sort of throwaway prototype to see how well the dryer heat recovery HX works before trying the "production" one.

When I ordered the twinwall glazing for the greenhouse, it came...
Forum: Conservation 12-11-12, 02:43 PM
Replies: 100
Views: 73,365
Posted By GaryGary
I was in Home Depot this morning and checked the...

I was in Home Depot this morning and checked the alum flashing -- they have 50 ft rolls 14 inches wide for $43 -- 58 cents a sqft. Not so bad.
The Corplast is about the same price per sqft here,...
Showing results 1 to 25 of 138

 
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