Forum: Energy Storage
03-03-16, 01:28 PM
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Replies: 14
Views: 24,490
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Forum: Energy Storage
02-28-16, 09:37 AM
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Replies: 14
Views: 24,490
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Forum: Energy Storage
03-22-14, 08:59 PM
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Replies: 14
Views: 24,490
From this study: ...
From this study:
http://www.worldenergy.org/documents/congresspapers/412.pdf
Paraffin:
coefficient of thermal conduction – solid = .2W/mK
coefficient of thermal conduction – liquid = .15W/mK
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Forum: Energy Storage
03-22-14, 03:39 PM
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Replies: 14
Views: 24,490
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Forum: Energy Storage
03-22-14, 11:21 AM
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Replies: 14
Views: 24,490
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Forum: Energy Storage
03-21-14, 08:38 PM
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Replies: 14
Views: 24,490
No info other than Cray labels on it.
...
No info other than Cray labels on it.
Digging additional 8' x 8' x 6' deep hole in area next to where basement will go, it's already about 5' below grade there from basement excavation.
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Forum: Energy Storage
03-21-14, 06:13 PM
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Replies: 14
Views: 24,490
jfweaver:
yes, I will need to space the pex...
jfweaver:
yes, I will need to space the pex HX's below pariffin bottom level.
Your tank within a tank would have a nice seperation benifit, but
A very big deal on solar hot water Eff. is to...
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Forum: Energy Storage
03-21-14, 05:39 PM
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Replies: 14
Views: 24,490
another source:
"Heat capacity of water, Cv =...
another source:
"Heat capacity of water, Cv = 4.187 kJ/kg
"paraffin wax has high latent heat capacity of 206 kJ/kg. The phase transition temperature of the wax is 40-50*C"
Paraffin 49 x water....
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Forum: Energy Storage
03-21-14, 04:13 PM
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Replies: 14
Views: 24,490
So roughly 1,000# of pariffin wax, at phase...
So roughly 1,000# of pariffin wax, at phase change (heat of fusion 50-70*C) is about the equivalent of 3,600 gallons of liquid water.
So my 1,000 gal. will be reduced to about 750 gal. water.
And...
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Forum: Energy Storage
03-21-14, 03:43 PM
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Replies: 14
Views: 24,490
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Forum: Energy Storage
03-21-14, 02:26 PM
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Replies: 14
Views: 24,490
Solar hot water storage + paraffin wax?
Has anyone done this?
I have 1,000 gal. tank.
Thinking of getting 1/4 pallet of paraffin wax 1,000# $600 + shipping.
Floats on water in top of tank.
Stores/releases at phase change about...
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