Solar water pump system
May 2015
Valves, Actuators & Pump Control
Solar water pumping solutions are standalone systems operating on power generated by photovoltaic technology. The power generated by solar cells can be used for operating both submersible and above ground pumps from bore, open well or water reservoir situations.
The Omega solar submersible pump from Raptech, is solar driven by a DC brushless motor, which draws water from borehole pumps, wells or rivers. The pump then pours water into a reservoir or storage tank or directly into an irrigation system. Based on the requirements and installation conditions, screw pumps or multi-stage impeller pumps can be utilised.
In solar pumping systems, pump selection is essential, as it directly affects the economy and stability of the entire system. Submersible pumps, which have a wide application and speed regulating range, are common in solar pumping systems. Submersible pumps can increase the working time and water flow rate of the solar pumping system. If the user requires low head and high water flow, a multi-stage impeller pump can be selected. If a high head and low water flow are required, a screw pump can be selected.
The solar pumping inverter converts DC current from the solar array into AC current to drive the pump. With the maximum power point tracking function, it regulates the output frequency according to irradiation in real time to achieve maximum power. The solar inverter provides a fast response and stable operation. It is superior to conventional methods which may lead to problems including poor tracking performance or even water hammer damage if irradiation on the array changes rapidly. Additional features include digital control, automatic operation and data acquisition and storage up to eight years.
Two variants of the Raptech Omega pump are available, 36 V or 48 V with a total head of 73 or 80 m. The user-friendly system provides a reliable and stable operation with a fast response.
For more information contact Carl Mulock, Raptech, +27 (0)11 693 5110, enquiries@raptech.co.za, www.raptech.co.za
Further reading:
Compact valve position indicator
Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson’s new TopWorx DVR Switchbox is an entry-level addition to the DV Series of valve position indicators. It combines a durable resin enclosure, compact size, and a patented cam design that provides a reliable valve position feedback for water and wastewater systems, food and beverage production lines, and industrial utilities.
Read more...
Dependable pumping for dewatering in hard rock mining areas
Valves, Actuators & Pump Control
Becker Mining’s Pumpor Vertical Spindle (PVS) pumps are hard at work on many mines throughout Africa, with many units installed recently in the Carletonville area, West of Johannesburg.
Read more...
Efficient, affordable solution for electrohydraulic pumps
Parker Hannifin - Sales Company South Africa
Valves, Actuators & Pump Control
In the world of construction a revolution is changing the status quo, the electrification of small and efficient construction machinery.
Read more...
Redefining Industrial Automation with the new Festo Valve Terminal
Festo South Africa
Valves, Actuators & Pump Control
Festo recently introduced its latest innovation in the form of the Valve Terminal VTUX. This invention marks the beginning of a new era in valve terminals, with its features making it an impressive solution for the future.
Read more...
New pilot-operated relief valve
Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson has introduced a pilot-operated relief valve for installation on pressurised bullet tanks used to store liquid propane and anhydrous ammonia. This type of pressure relief valve is typically installed on tanks fabricated by OEMs for end users, engineering firms, or contractor customers.
Read more...
Pulse valves for dust collection
Emerson Automation Solutions
Valves, Actuators & Pump Control
In process manufacturing, especially hard mineral mining, dust particles are unavoidable. If this pervasive dust is not effectively removed, it can accumulate throughout mines, plants and other facilities, becoming hazardous to workers and equipment.
Read more...
Case History 191: The weakest link.
Michael Brown Control Engineering
Valves, Actuators & Pump Control
Which is the weakest link in a control loop? The answer, without any doubt is that, in most cases, the final control element is the weakest link.
Read more...
High-flow solenoid valve
Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson has introduced the new ASCO Series 327C solenoid valve, which features a direct-acting, high-flow design that provides superior flow-to-power ratio. It permits high flows at minimum power levels, making it ideal for use in power plants, refineries, and chemical processing facilities.
Read more...
Selection of two-port valves: an open and shut case
SMC Corporation South Africa
Valves, Actuators & Pump Control
Little consideration is generally given to two-port valves because they are often perceived as simple devices that only open and close to control downstream fluid supply. Although this is mechanically true, choosing the optimal two-port valve for your application can make a big difference, saving space, weight and energy consumption.
Read more...
Emerson software optimises maintenance
Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
Read more...
printer friendly version