Advantages and disadvantages of solar water pump

Update:03-06-2020
Summary:

Solar water pumps are used in residential and commercia […]

Solar water pumps are used in residential and commercial applications. They are a clean alternative to fossil fuel-driven windmills and generators. There are two main types of solar water pumps. The surface pump is located on the ground and moves water through pipes. These can slowly move large amounts of water. Surface pumps are usually found in farms or large irrigation systems where water needs to be moved from the lake to the field. The submersible solar water pump is located underground, but the solar panel is connected to the ground. Submersible pumps are used to move water from the well to the surface.

 

The main difference between a solar pump and a conventional pump is the power supply. Solar water pumps rely on solar panels to operate equipment. The solar panel can be built into the device or a separate structure connected to the pump by wires. The solar panel then powers the equipment, allowing it to work independently of any existing electrical system.

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Solar pumps range in size from small pumps to power fountains, and large pumps used to pump water from underground aquifers. Built-in panels are usually used for smaller pumps, while larger pumps require separate installation. Photovoltaic power supplies rarely use moving parts and work reliably. Safe, no noise, no other pollution. Does not produce any solid, liquid and gaseous harmful substances, absolutely environmentally friendly. Simple installation and maintenance, low operating cost, suitable for unattended and other advantages. Especially because of its high reliability, it has attracted much attention. Compatibility is good. Photovoltaic power generation can be used in conjunction with other energy sources. It can also easily increase the capacity of photovoltaic systems as needed. High degree of standardization, which can meet the needs of different power consumption by series and parallel components, and has strong versatility. Green environmental protection, energy saving, solar energy is everywhere, and a wide range of applications.

 

Characteristics of various solar water pumps

 

1. Brushed DC solar water pump:

 

When the pump is working, the coil and the commutator rotate, and the magnetic steel and carbon brush do not rotate. The alternating change of the coil current direction is completed with the commutator and brush that the motor rotates. As long as the motor rotates, the carbon brush will wear out. When the computer water pump runs to a certain point, the wear gap of the carbon brush becomes larger, and the sound will increase accordingly. After hundreds of hours of continuous operation, the carbon brush will not play a role in commutation.

 

Advantages: low price.

 

2. Brushless DC solar water pump (motor type):

 

The motor type brushless DC water pump is composed of a brushless DC motor and an impeller. The shaft of the motor is connected to the impeller, and there is a gap between the stator and rotor of the pump. After a long time of use, water will penetrate into the motor and increase the possibility of motor burnout.

 

Advantages: Brushless DC motors have been standardized and mass produced by specialized manufacturers. The cost is relatively low and the efficiency is high.

 

3. Brushless DC magnetic isolation solar water pump: Brushless DC water pump adopts electronic component commutation, no need to use carbon brush commutation, high-performance wear-resistant ceramic shaft and ceramic bushing, the bushing is integrated with the magnet by injection molding It also avoids wear, so the life of the brushless DC magnetic water pump is greatly enhanced. The stator part and rotor part of the magnetically isolated water pump are completely isolated. The stator and circuit board parts are encapsulated with epoxy resin, 100% waterproof. The rotor part is made of permanent magnets. The pump body is made of environmentally friendly materials. The noise is low, the volume is small, and the performance stable. Various required parameters can be adjusted through the winding of the stator, and wide voltage operation is possible.

 

Advantages: Long life, low noise up to 35dB, can be used for hot water circulation. The stator and circuit board parts of the motor are potted with epoxy resin and completely isolated from the rotor. They can be installed underwater and are completely waterproof. The shaft center of the pump uses a high-performance ceramic shaft with high precision and good shock resistance.

 

According to the opposition of things, there are advantages and disadvantages. What are the disadvantages of solar pumps? The upfront cost is high, and depending on the size of the pump required, the initial investment in installing the system may be costly for some systems; intermittent, requiring good sunlight exposure, especially gold from 9 am to 3 pm Time periods, while cloudy days translate into lower output, which may be a potential problem in some applications. A key fact of energy-dispersed solar water pumps is that they only provide electricity during the day. In many cases, this is sufficient for the intended use, but if you need to pump water once the sun goes down, you should consider a pump with battery storage.

 

Large pumps may include battery arrays that can provide continuous power for 12 hours or more, but such battery arrays are inherently bulky and may require separate sheltered storage to prevent severe weather.

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