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Solar Hot Water System

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With hot water solar heating panels that heat a copper cylinder with no pump, to an internal heating coil, does the "flow" from the solar heating panel run to the top of the coil in the copper cylinder or the bottom, bearing in mind that with a gravity system hot water rises?

Z.

Parents
  • +1

    The solar coil is usually the lower coil in a cylinder, with the flow going to the top tapping.

    Presumably for a gravity system the cylinder would be sited above the solar panels. difficult if they are on the roof. However i'm pretty sure that you can't have a gravity fed solar system, most panels and cylinders require pumps. The pipework diameters would be too small to get good flow.

Reply
  • +1

    The solar coil is usually the lower coil in a cylinder, with the flow going to the top tapping.

    Presumably for a gravity system the cylinder would be sited above the solar panels. difficult if they are on the roof. However i'm pretty sure that you can't have a gravity fed solar system, most panels and cylinders require pumps. The pipework diameters would be too small to get good flow.

Children
  • 0 in reply to OlympusMons

    Thanks Olympus, that is all I needed to know. I am aware that the heating panelwill have to be below the cylinder. The system wil be very basic and will just produce mainly limited  tepid water. I have discovered that I can have a pretty good wash and shave with just over a mugful of hot water.

    Z.

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