BTU Output of Swimming Pool Solar Panels

Re: BTU Output of Swimming Pool Solar Panels

PostBy: warminmn On: Fri May 15, 2015 7:35 pm

I like the sound of a 94 degree pool on a cool day. NICE!
warminmn
 
Hand Fed Coal Stove: Chubby Junior, Efel Nestor Martin, Frankenstove
Coal Size/Type: nut and stove anthracite. Soft coal
Other Heating: wood


Re: BTU Output of Swimming Pool Solar Panels

PostBy: davidmcbeth3 On: Sat May 16, 2015 4:48 pm

Image

My summer fun ....
davidmcbeth3
 
Coal Size/Type: nut/pea/anthra
Stove/Furnace Make: Hitzer
Stove/Furnace Model: 503

Re: BTU Output of Swimming Pool Solar Panels

PostBy: Lightning On: Tue May 24, 2016 5:28 pm

It's that time of year again fellas. :) Got the pool set up yesterday. It gained 7 degrees today. Only at 63 degrees currently but if I can get 5 degrees per day the water temp will be in the 80's for the kick off of summer this weekend! Yay!
Lightning
 
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size

Re: BTU Output of Swimming Pool Solar Panels

PostBy: Lightning On: Wed May 25, 2016 8:27 am

So, if I did this right it took almost 900,000 BTU's yesterday to gain 7 degrees in the pool water. I figured with 15,000 gallons.
Lightning
 
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size

Re: BTU Output of Swimming Pool Solar Panels

PostBy: lsayre On: Wed May 25, 2016 5:25 pm

Full overhead sunlight yeilds1,000 Watt-Hours per meter squared. That is 3,412 BTUH per square meter. Or 2,853 BTUH per square yard.
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
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Other Heating: Resistance Boiler (13.5 KW)

Re: BTU Output of Swimming Pool Solar Panels

PostBy: Lightning On: Wed May 25, 2016 6:41 pm

lsayre wrote:Full overhead sunlight yeilds1,000 Watt-Hours per meter squared. That is 3,412 BTUH per square meter. Or 2,853 BTUH per square yard.


24 foot diameter Pool has a top surface area of 42.1 square meter so it collects 143,645 per hour thru the top. If I remember correctly the solar panels supply another 40,000 btu per hour. I'm getting a solid 7-8 hours of full overhead sunshine on clear days to both the pool and solar panels.

Gotta figure in nighttime loss too of about 2-3 degrees.
Lightning
 
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size

Re: BTU Output of Swimming Pool Solar Panels

PostBy: Lightning On: Wed May 25, 2016 6:42 pm

It's ashame that solar heat can't be stored to use in the winter cause there is plenty of it.
Lightning
 
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size

Re: BTU Output of Swimming Pool Solar Panels

PostBy: Lightning On: Wed May 25, 2016 6:46 pm

Just think if that 900,000 btu's could be used in the winter. That's worth 90 pounds of coal at 80% efficiency.
Lightning
 
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size


Re: BTU Output of Swimming Pool Solar Panels

PostBy: hotblast1357 On: Wed May 25, 2016 7:50 pm

BIG inside heavily insulated storage tanks! Plate heat exchanger, anti freeze in the solar side, during the sunny days it will heat up the storage tanks all day, say 500-1,000 gallons of storage.
hotblast1357
 
Stoker Coal Boiler: 1984 Eshland S260
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Re: BTU Output of Swimming Pool Solar Panels

PostBy: lsayre On: Wed May 25, 2016 8:15 pm

Lightning wrote: I'm getting a solid 7-8 hours of full overhead sunshine on clear days to both the pool and solar panels.


You can only get a brief moment of directly overhead sunshine. But fortunately the cosine function involved here is quite forgiving. Here is a quick chart I whipped up for the percentage of sunshine utilization one can expect with respect to the time of the day. I've verified it with my solar panels.

Sun_Angle_vs_Watts.pdf
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lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)

Re: BTU Output of Swimming Pool Solar Panels

PostBy: Lightning On: Wed May 25, 2016 9:17 pm

Oh wow, that's neat. So plus or minus 40 degrees of solar noon is pretty good. That's what I would call the 7-8 hours of good sunshine :)
Lightning
 
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size

Re: BTU Output of Swimming Pool Solar Panels

PostBy: Rob R. On: Thu May 26, 2016 5:50 am

Lightning wrote:It's ashame that solar heat can't be stored to use in the winter cause there is plenty of it.


It can...but that needs to be the plan before the house is built. It is impressive what can be done with passive solar if the house is designed correctly.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Re: BTU Output of Swimming Pool Solar Panels

PostBy: McGiever On: Thu May 26, 2016 7:14 am

I did build in some passive features when I built this home in 1978.
Originally heated with wood because youth and access to abundant supply clouded my wisdom.
Installed a 2 stage ground source heat pump in 1996...there's some stored sunshine for you. :lol:

Soon to complete a 30 panel PV solar array in backyard...excess production gets stored with batteries first and then to the utility grid. Plan is to keep batteries on float charge mainly and only use them during utility outages.
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: BTU Output of Swimming Pool Solar Panels

PostBy: Pauliewog On: Thu May 26, 2016 4:08 pm

McGiever wrote:I did build in some passive features when I built this home in 1978.
Originally heated with wood because youth and access to abundant supply clouded my wisdom.
Installed a 2 stage ground source heat pump in 1996...there's some stored sunshine for you. :lol:

Soon to complete a 30 panel PV solar array in backyard...excess production gets stored with batteries first and then to the utility grid. Plan is to keep batteries on float charge mainly and only use them during utility outages.


That sounds like an awesome project. If you get a chance, I for one would really like to see a thread dedicated to the installation!

What type of batteries, and how many are you planning to use?

Paulie
Pauliewog
 
Hot Air Coal Stoker Furnace: Alaska 140 Dual Paddle Feed
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Re: BTU Output of Swimming Pool Solar Panels

PostBy: McGiever On: Thu May 26, 2016 5:20 pm

Here is a teaser...took this pic several weeks ago. Much more progress than what is shown here.
This is a one man show, so progress is up and down according to other pressing needs.

I'll have to get another thread started as was suggested. :)

IMG_1946.JPG
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McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek


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