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NiHaoMike · 12-18-13, 06:54 PM

You could add a pump to recirculate the water.
3 GPM / 11.5 LPM - 12V Solar Hot Water Pump - Can be run by a 15W solar panel - Amazon.com
You'll have to add a 12V wall wart and some basic control circuits, but keep in mind that a ready made version costs about $200. The control can be as basic as a thermostat (set to open at 100F or so) and a button switch. When you want to use hot water, just hold the button until the thermostat turns off the pump.

12-18-13, 06:54 PM	#3
NiHaoMike Supreme EcoRenovator Join Date: Oct 2008 Location: Austin, TX Posts: 1,154 Thanks: 14 Thanked 257 Times in 241 Posts	You could add a pump to recirculate the water. 3 GPM / 11.5 LPM - 12V Solar Hot Water Pump - Can be run by a 15W solar panel - Amazon.com You'll have to add a 12V wall wart and some basic control circuits, but keep in mind that a ready made version costs about $200. The control can be as basic as a thermostat (set to open at 100F or so) and a button switch. When you want to use hot water, just hold the button until the thermostat turns off the pump. __________________ To my surprise, shortly after Naomi Wu gave me a bit of fame for making good use of solar power, Allie Moore got really jealous of her...