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TS5 Solar Water Circulation Pump, PV Direct Drive, 15W Stainless Steel Fittings

ITEM ID: 392902
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2203392902
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Solar Water Circulation Pump, PV (Photovoltaic) Direct Drive

Solar Pump Compare Features

 

15 Watt nominal power solar water pump, optimized to run off a solar photovoltaic panel. Solar pump is designed as a circulation pump for a solar thermal water heater system. Stainless steel NPT fittings. Special feature: adapts to the changes in power from a PV panel as the amount of sunlight changes Maximum Power Point (MPP) tracking. No maintenance.

  

Makes simple split solar water heater system.

Runs connected to a 15 W solar PV panel.

Circulation pump runs when the sun shines, runs faster when more sun, more hot water.

No controller, no probes, no grid power needed. 

Creates Off-grid split solar water heater system.

 

Pump electronics are specifically designed to run with variable output from a solar photovoltaic panel. This pump is specifically designed to work as a circulation pump for solar thermal water heater split systems. 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.

 

MPP tracking means that this pump will start and run when the sun is not strong enough to run other pumps, and will run faster with more sun. The most common pump application is for water circulation in a split solar thermal water heater 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. The great advantage of this pump in a solar water heater system is that the solar pump runs when the sun shines, eliminating the need for an electronic controller in the system. Making the pump perfect is the ability to run efficiently with either a little sun or full sun.
   

Features: 

  • 6V~24V DC as solar PV panel output varies
  • Rated Voltage 12 V DC
  • Max open flow rate: 12 liters/minute
  • Max head: 3 meters 
  • Directly powered by PV panel
  • Stainless Steel 1/2" female NPT Inlet/Outlet
  • Max system pressure: 10 Bar
  • Max working temperature: 110°C (230° F)
  • DC brush-less 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
  • Low or no maintenance
  • Low power consumption
  • Can be customized 

 

 

Understanding Pump Specifications:

 

In the flow curve graph, notice that voltage varies from 8 to 24 V DC and the maximum head (zero flow) is around 3 meters.

 

The flow rate is zero at maximum head. Look at the bottom of the flow curve graph-there is no flow at maximum head; this just shows what the pump could do if it hummed away, maximum power in, and just pushed a water column up as far as it could, say up a pipe that was open at the top. The water column would reach 3 meters. No water would spill out the top.

 

12 Volt is nominal voltage. Power is equal to current times voltage (P=IV). On page 1 of the same brochure, voltage for all models of the pump varies from 6 V to 24 V DC, which is, of course, the great advantage of the PV direct pump, which adjusts output based on a varying solar input. Solar panel output varies in both current and voltage. To achieve maximum power point (MPP) tracking, the pump adjusts both torque and speed. The pump can run fast, high RPM with a high flow, at low head: this works with a lower voltage and high current. Torque required is small at lower head. Even at a fairly low voltage, the pump could absorb full power; the power is all going to high flow. The converze is true as well: to get the maximum head, which requires maximum torque, the voltage would have to be at a maximum value, closer to 24 V, and the current would be low, just enough to turn the pump fast enough to prevent back flow. But nobody does this because flow rate is zero.

 

This pump is built to circulate water from a solar collector on the roof to a tank that is usually in the building below. The pump needs to have a closed loop; which means water pressure in to the pump, coming from the roof, is almost the same as water pressure out of the pump going to the roof. This is a circulation water pump, built to overcome the friction of circulating water in solar water heater system. 
If water circulates from the roof back down to the tank, then the pump is only overcoming friction in the pipe, not the head to the roof. The water coming from the roof has almost the same pressure as the water going back up. The pump just has to help it along, overcoming the turbulence and pipe friction losses. There has to be water in the return line and no air gaps, otherwise this little pump would not have the power to push water all the way to the roof. Once the whole line is full of water, though, then all the pump has to do is overcome friction, not gravity. This is the secret to being able to use such a small pump to circulate water to a high roof: there is no head to overcome because the system is closed loop.
      

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.

 
Q&A:
 
Q: I am looking for a solar PV panel to run it - could you please recommend the best size/power panel I need?
 
A: Any panel around 15 Watts is good. Smaller than 5 Watts will not be enough power. Larger is OK so long as voltage is less than 24 V. What if the Panel is more than 24 Volts? A charge controller and battery would limit voltage, so any size panel could be used if desired. For example, to run the pump all night, perhaps a 45 amp hour battery, 100 W panel and controller could be used. 
 

On the scanned specification sheet, notice that voltage varies from 8 to 24 V DC and the maximum head (zero flow) is around 3 meters. The flow rate is zero at maximum head. Look at the bottom of the flow curve graph-there is no flow at maximum head; this just shows what the pump could do if it hummed away, maximum power in, and just pushed a water column up as far as it could, say up a pipe that was open at the top. The water column would reach 3 meters. No water would spill out the top.

12 Volt is nominal voltage. Power is equal to current times voltage (P=IV). On page 1 of the same brochure, voltage for all models of the pump varies from 6 V to 24 V DC, which is, of course, the great advantage of the PV direct pump, which adjusts output based on a varying solar input. Solar panel output varies in both current and voltage. To achieve maximum power point (MPP) tracking, the pump adjusts both torque and speed. The pump can run fast, high RPM with a high flow, at low head: this works with a lower voltage and high current. Torque required is small at lower head. Even at a fairly low voltage, the pump could absorb full power; the power is all going to high flow. The converze is true as well: to get the maximum head, which requires maximum torque, the voltage would have to be at a maximum value, closer to 24 V, and the current would be low, just enough to turn the pump fast enough to prevent back flow. But nobody does this because flow rate is zero.
Average rating: 5.0
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