Aquasolar - Deep well hand pump with solar power

The model "Aquasolar" is a solar powered piston pump for the autonomous ground water pumping. It is available in different sizes and based on a piston with footvalve.

The maximum instalation depth is depending on the model up to 70 metres with a maximum yield of ca. 550 l/h. 2-4 solar modules offer the required enegry supply. With the possible manual operation you can always get water at night or when the sun is not delierving the required power.

This system in applied in many developing countries for the water supply. For existing handpumps you can add the solar powered drive any time.

The advantages at a glance

Water supply at any night and day time
Automatic operation through swimmer switch
Engine support at low solar radiation
Direct system without inverter or batteries
Existing pumps can be extended modularly
maintenance friendly through robust pump mechanics
Limited investment costs

Pictures from Gambia with the Aquasolar

Technical data

Cylinder with piston and footvalve	K 65 I	K 50 VA I	K 40 VA I
Minimum inner diameter of well	100 mm	80 mm	80 mm
Maximum installation depth	30 m	45 m	75 m
Pressure at pump outlet**	1 -2 bar	1 - 2 bar	1 -2 bar
Maximum number of piston strokes	40 /min	40 /min	40 /min
Yield at stroke length of 75 mm	0,23 l	0,14 l	0,09 l
Yield at 40 strokes/min approx.	550 l/h	335 l/h	215 l/h
Daily yield at array of 7kWh/m²	4,9 m³	3,0 m³	1,9 m³
Rate of hydraulic efficiency approx.	0,9	0,9	0,9
Average current input for solar drive	0,9 - 1,9 A	1,2 - 1,8 A	1,3 - 1,8 A
Maximum input power	75 W	70 W	70 W
Minimum required array for motor start*	200 - 400 W/m²	250 - 400 W/m²	250 - 400 W/m²
Total rate of efficiency	0,45 - 0,55	0,5 - 0,6	0,45 - 0,5