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<blockquote data-quote="chrisc" data-source="post: 1111045" data-attributes="member: 746"><p>I have a 20-tube (evacuated tube) collector. There is a 12 volt circulation pump to augment water circulation. Same as Gerlach states, not that good on cloudy winter days. but more than adequate in summer. The 12 volt pump runs from a small PV panel</p><p></p><p>Then there is a heat pump, controller by a Geyserwise to come on at 17h00 and 06h00 for 2 hours, It has its own temperature probe in the tank and only comes on if the water is below 55 deg</p><p></p><p>I'm investigating a low voltage geyser element as well. A friend in Pinelands fitted one, driven by 2 x 450 watt PV panels and I was surprised how efficient it was</p></blockquote><p></p>
[QUOTE="chrisc, post: 1111045, member: 746"] I have a 20-tube (evacuated tube) collector. There is a 12 volt circulation pump to augment water circulation. Same as Gerlach states, not that good on cloudy winter days. but more than adequate in summer. The 12 volt pump runs from a small PV panel Then there is a heat pump, controller by a Geyserwise to come on at 17h00 and 06h00 for 2 hours, It has its own temperature probe in the tank and only comes on if the water is below 55 deg I'm investigating a low voltage geyser element as well. A friend in Pinelands fitted one, driven by 2 x 450 watt PV panels and I was surprised how efficient it was [/QUOTE]
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