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Author Topic: Hybrid solar pv and vacuum tube panel  (Read 2855 times)
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SW London

« on: January 06, 2014, 09:26:03 AM »

I stumbled across this this morning, what do people think? A solar pv panel that also incorporates a vacuum tube for solar thermal?

3.06kWp SolarEdge system with a split array:
2.18kWp 10x South facing, plus 4x West facing 880W

Mk1 ImmerSUN DHW diverter
4kW PowerVault Battery

Tesla Model 3 Long Range
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North-East Hampshire

« Reply #1 on: January 06, 2014, 09:34:31 AM »

Stagnation could kill it. Circulation pump fails, all fails.

1.140kW mono south-facing at 49*
EpEver 4210A at 24v
Nearly dead 24V 400 Ah battery. (4x200Ah FLA)
EpEver STI1000-24-230 pure sine inverter
Of course it'll work. (It hasn't caught fire yet).
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« Reply #2 on: January 06, 2014, 09:48:56 AM »

Nah.  Just put a few navitron heat pipes under your panels and let them transfer heat to atmosphere to cool under the panels?  If you want solar thermal get the whole kit of vac tubes, heat pipes and appropriate plumbing!  If you want PV get PV panels

Probably not much more efficient than a good airflow under the panels.

The PV collector size looks to be tiny; if you wanted a huge thermal array and a little electrical power, they might be convenient.  But at a huge cost premium, dare I say?

Gimmick in my book, until I see some real life figures to prove otherwise.

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« Reply #3 on: January 11, 2014, 02:56:04 PM »

I've done a little work for New Form Energy which was is a competitor of Naked Energy.  I'm not an employee, but do like Anthony Morgan (CEO), so am declaring the connection.

There is definitely yardage in the fact that the energy density of generation is higher, so good for projects where space is limited and especially if higher codes have to be hit for flats.  It also works well for hotels, leisure centres, and hospitals.  The returns are also good when combined with heat pumps off the gas grid.

They have several test sites underway to try and prove it is cost effective for gas connected housing.  They don't yet have the proof though.

I believe they have solved stagnation issues, but don't have details on how, so can't vouch for it.

As with anything I'd recommend just contacting the company and see if you believe the spiel they give you, potentially bringing it back on here for the multitude of experts to pick holes in.


Declaration of interest: I used to work for a Solar PV Installer.
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