solar energy water pump PV circulation

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Solar Circulation Pump, PV (Photovoltaic) Direct Drive

Solar Energy DC water circulation pump, 10 W nominal output.

8V~24V DC as solar PV panel output varies
Max open flow rate: 20 liters/minute
Directly powered by PV panel
Brass head with 1/2" male NPT Inlet/Outlet
Max system pressure: 10 Bar
Max working temperature: 110°C (230° F)
DC brushless motor with micro processor control
Minimum start-up power: less than 3 Watt
Soft start at very low in-rush current
Automatic overload protection
Automatic temperature protection
Durable permanent magnetic rotor/impeller and fine ceramic shaft
Advanced magnetic drive technology, no seals, no leakage
Long life brush less pump, ideal life for 30000 hours
Heavy duty work, can sustain continual 24 hours' work
Low noise: ≤45dB far from 1m distance

pv pump solar collectors

Small 10 W solar PV panel to run pumps. Large panels are the solar thermal water heating panels.

Never run the pump dry-it will overheat and burn out.

Circulation Pump runs when the sun shines

Runs faster when more sun, more hot water
No controller, no probes, no power needed
Creates Off-grid split solar water heater system
Powered directly by 10 W solar PV panel

Pump electronics are specifically designed to run with variable output from a solar photovoltaic (PV) panel. Pump can start with little sun and uses Maximum Power Point (MPP) tracking to run faster when there is more sun, and therefore more heat to be taken from the solar thermal panels.

Eliminates the need for an electronic control system for solar energy water heaters. Radiant floor heating also possible. wiring diagram for PV panel direct system.

Electronic controllers historically cause the most trouble in a solar water heater system. Eliminate the controller with a solar PV direct pump, and the largest source of solar water heater system failures is eliminated.

solar pv pump plumbing

Low or no maintenance
Low power consumption

See brochure for PV direct pump

Note: never run a pump dry; this will overheat and ruin the pump. Seal the intake and orientate pump with arrow upwards for best lift capability.