Thermal Hot Water Heater

This system is a Closed loop, active (with pump), collector with a 30 vacuum tube (Heat pipe evacuated tube type), indirect system (collector will transfer heat through a liquid loop) and a 40 gal. solar hot water tank with heat exchanger. Other apparatus added later.

Hot Water Release

Hot Water Release

Here is the release of water from the hot water tank. The release was caused by over pressure from the solar heat transfer and no water being used for 3 days.

Closed Loop Leak

Collector getting too hot again. Noticed a lack of closed loop flow and no pressure on the expansion tank gauge.

Solar Flowmeter Leak

Solar Flowmeter Leak

Water Propylene Glycol was leaking out of the glass to brass area. If I pushed on the glass with my finger the leak would increase.

Expansion tank

Expansion tank

After purging the thermal solar loop, add 30 psi to expansion tank to build up pressure in the loop.

Utility Pump

Utility Pump

From Lowes manual Utilitech submersible utility pump, 1/3 HP, 1800GPH or 6814 L/H, #0094086

374°F Collector

374°F Collector

Display showing hot Solar Collector

Solar Hot water Tank top

Solar Hot water Tank top

Display showing T# which is top of the solar hot water tank

T2 Bottom of solar hot water tank

T2 Bottom of solar hot water tank

Display showing T2 lower sensor in the solar hot water tank

Solar utility purge pump

Solar utility purge pump

This picture is of the setup to purge the thermal solar loop with a utility sump pump

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