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Search: Posts Made By: sbkenn
Forum: Geothermal & Heat Pumps 04-22-18, 03:42 PM
Replies: 4
Views: 1,463
Posted By sbkenn
I already have 400W of PV, and a home-made CHP...

I already have 400W of PV, and a home-made CHP unit for higher power AC power and battery charging. I am about to rewind a 7kVA generator to charge 24V batteries and supply AC power from the same...
Forum: Geothermal & Heat Pumps 04-22-18, 06:40 AM
Replies: 4
Views: 1,463
Posted By sbkenn
Do you mean the tube arrays ? Am I right in...

Do you mean the tube arrays ? Am I right in thinking that a much smaller array would be required for water to water than air to air ?
Forum: Geothermal & Heat Pumps 04-21-18, 05:37 PM
Replies: 4
Views: 1,463
Posted By sbkenn
Heatpump efficiency/reuse

Hi. Can anyone comment on what improvements have allowed heatpumps to become more efficient ? Older ones were delivering maybe 3x electric power, while newer ones are > 5x. I live on a boat in a...
Forum: Appliances & Gadgets 03-10-18, 05:35 PM
Replies: 17
Views: 5,371
Posted By sbkenn
Scale v. efficiency

The only way it could affect efficiency is through heat being conducted out to the terminals and external wires. That will be negligible from the efficiency POV, but as has already been said, it...
Forum: Conservation 10-28-17, 05:08 PM
Replies: 58
Views: 10,275
Posted By sbkenn
Turbo

[QUOTE=oil pan 4;56102]At some point I would like to have a stationary backup 1800rpm, liquid cooled kubota diesel generator . I have even been looking for an old timey cast iron radiator to put in...
Forum: Conservation 10-25-17, 07:40 AM
Replies: 58
Views: 10,275
Posted By sbkenn
Going off grid

Buy or build a CHP system. Water cooled diesel engine driving a generator. If you can, do it with belt drive to mains alternator, add a 24V alternator to directly charge batteries, and run the...
Forum: Solar Power 06-20-16, 05:24 PM
Replies: 13
Views: 4,249
Posted By sbkenn
Will yours press flat ? Search for "water clear"...

Will yours press flat ? Search for "water clear" adhesives.
Forum: Solar Power 06-20-16, 03:31 PM
Replies: 13
Views: 4,249
Posted By sbkenn
The trouble is, some of the glass came off which...

The trouble is, some of the glass came off which would leave gaps, and because of the shattered glass, the panel won't press flat.
Forum: Solar Power 06-20-16, 10:30 AM
Replies: 13
Views: 4,249
Posted By sbkenn
Many epoxies can be softened or even dissolved,...

Many epoxies can be softened or even dissolved, if you know what solvent to use. The big question is, would that solvent damage the polycrystalline cells.
Forum: Solar Power 06-20-16, 10:27 AM
Replies: 13
Views: 4,249
Posted By sbkenn
Panel repair

Have a look on eBay for solar film. Alternatively, see if you can get some toughened glass, 3m thick, then apply the PV array with some new adhesive. There are a lot of "water-clear" polyurethanes...
Forum: Solar Power 06-19-16, 04:55 PM
Replies: 13
Views: 4,249
Posted By sbkenn
PV panel renovation

Hi. Does anyone have any tips on removing the shattered glass from a PV array ? I have two 200W Kyocera panels with shattered glass, the aftermath of a storm. I am loath to chuck them out, but...
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