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Mandela Day 2011 Mandela Day 2011 Sunhot Solar teamed up with the Emergency Medical Services of Worcester on Mandela day to give back to community. Read more
Beaufort-West water drive. Beaufort-West water drive. As most of you know, Beaufort-West is experiencing it's worst draught in a 100 years and the dam supplying the town with clean drinking water is completly empty. People passing thr... Read more
Survival of the Smartest Survival of the...smartest.   The increase in the price of electrical energy will affect commercial and private consumers across the country and it is sure to influence our spendi... Read more
Span die son in! Span die son in! Terwyl honderde miljoene regoor die wêreld eerskomende Saterdag ter ondersteuning van Earth Hour in donkerte gehul sal wees, gaan ’n huis op Worcester soos ’n helder lig skyn – óók... Read more
ESKOM Solar Rebate Buy a Solar Heating System and get money back. Sunhot Solar is an accredited supplier on the Eskom solar rebate programme which entitles our customers to claim a rebate from ESKOM.... Read more
Football for hope Football for hope We are Proud to heat Khayelitsha Football For Hope's water FREE FROM THE SUN !! Read more
Hybrid Living Hybrid Living We have just finished the final stage of our generation plan and are proud to announce that we are now generating our own electricity by means of wind and solar energy. Read more
We now offer a 10 year warranty
22 Years experience in the South African solar market
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Contact Details
Address:
Devilliers street 11
Langerug
Worcester
Western Cape
6850
South Africa

Telephone: +27 23 342 4020
Fax: +27 023 347 3359
Mobile: +27 082 447 5896

Information: Email:
fazli@sunhotsolar.co.za

Office Hours:
Mon - Fri : 08h00 - 17h00

 
The Laing D5 solar PDF Print E-mail

The Laing D5 solar pump25 Lpm, photovoltaic circulation pump

The first DC spherical motor pump for direct connection to photovoltaic panels with automatic performance optimization using MPP technology (Maximum Power Point tracking).

 

The Ecocirc solar pump can be used wherever a highly efficient circulation pump is needed without a direct connection to AC power. It can be connected directly to a photovoltaic panel and is characterized by its small size, high efficiency, very low power consumption and its MPP tracking. The shaftless spherical motor technology enables a long, maintenance free and quiet service life. Areas of application are thermal solar systems for single family homes.

 

Design

The principle of the spherical motor, which was invented by Laing, is fundamentally different from conventional canned motor pumps. The only moving part in a spherical motor is a hemispherical rotor/impeller unit, which sits on an ultra-hard, wear-resistant ceramic ball. There are no conventional shaft bearings or seals. This rules out, in effect, the possibility of play in the bearings and the increase in noise associated with it. These pumps are particularly robust and give exceptionally long service. The self-realigning bearing is lubricated and cooled by the media. Maintenance is not necessary under normal conditions and even after lengthy shutdown periods a reliable start-up is virtually guaranteed. The parts exposed to the fluid are completely corrosion resistant.

 

Soft start-up

The pump has been programmed for a soft start-up. When the photovoltaic panel provides sufficient power, the pump first goes through the alignment phase, turning the rotor into the position required for start-up. Then the processor waits until the built-in capacitor has recharged sufficiently. This enables a start-up with minimal power (less than one Watt). Cycling due to unsuccessful starting attempts is minimized. Even after prolonged shutdown, the pump will start reliably.

 

Automatic performance optimization – MPP tracking

The Ecocirc DC pumps are the first and only spherical motor pumps with self-optimizing software (see diagram). Every three seconds, the processor will modify its operating point on the voltage-current curve of the PV panel to find the point of maximum performance. This is called the “Maximum Power Point” (MPP).

At this point, the pump achieves the maximum rpm and therefore the maximum performance. There is no need for a separate performance adaptation, the pump will always find its best operating point under any given light and temperature conditions by itself.

Product Features:

  • High efficiency soft start typical less than 1 watt
  • Power Source Low voltage 8-24 volts
  • Power consumption max 22 watts 0.25-1.46A
  • Corrosion resistant construction
  • fluid media hot water /glycol mixtures
  • Magnetic coupled brushless drive motor
  • Electronic drive motor with MMP technology
  • Long life maintenance free
  • Vertical or horizontal piping
  • RF Suppressed
  • Reverse polarity protected
  • Light weight 0.7 kg
  • Size 65mm x82mm

Pump Data:

  • Max Flow: 25 LPM. Max Head: 2.7 Mts
  • Max System Pressure: -10 to (10 Bar) Max
  • Max System Temperature: -10 to 95.c
  • Power Consumption Max: 22 watts 0-25- 1.46 A
  • Voltage: 8-24 Volt
 
Solardome SA
SESSA
Our systems are SABS approved
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Proudly manufactured in Stellenbosch, South Africa
ABSA financing available.
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