OTHER PEOPLES SOLAR HOT WATER SYSTEMS
This very neat setup is by Nick Lord of Hampshire I think it may be to heat a hot tub.
Nick has used two 25m lengths of silicone tube 12.5 mm ID 2mm wall thickness running side by side and reducing down inside the building. This has twice as much tube as my panel and should harvest more heat . Without doing carefully controled experiments its hard to know what would be the optimum setup .
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