Communal solar hot water

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Does anyone have any knowledge of solar panels being used on a communal roof with a twin coil cylinder in each flat?
 
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Getting people to contribute to the costs of a scheme with no payback time would be well neigh impossible.

Getting a social housing scheme to pay so much should fail for the same reason!

Better insulation will give the same annual gas savings for far less cost!

Solar may be a good idea but not at current costs.

Tony
 
Sorry I should have gone into more detail. I'm currently working on a new build 40 flats with twin coil cyl in each flat and panels on roof. Personally I don't think the set up will work. Resol controller in each flat, sensor cables from panels brought down into each flat, pump connection on resol feeding overheat stat > feeding 2 port valve, orange of valve turns communal pump on roof. I think extending the sensor cables will be inaccurate, and the heat loss will be immense over those distances.
I just wondered if anyone on here has installed a similar system.
 
It could be made to work, but I doubt you have sufficient roof space for the area of collectors needed.
 
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I think theres roughly 100 collectors, they worked it out just over 2 per flat. Also they've installed communal boilers, so I doubt the solar will get a chance to heat the tanks before the boiler does
 
But there are twin coil cylinders fitted as you state above.
Why would the solar not get a chance to heat up the the portion of the cylinder that it's coil is allocated too?
 
Because the boilers will be heating the cylinder 24/7 (until stat shuts off) so the majority of the tank will be heated by the boiler, and the recovery time will be so fast the solar won't get a chance
 

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