The solar powered water pump system functions by absorbing energy from sun rays and using that energy to pump water for agricultural or domestic use. The increased adoption of this new water pumping system by homes and local farmers in some African regions (like Kenya, Tanzania, Uganda, Morocco, Sudan, etc), and large European and American farms is creating more opportunities for the solar water pump market.
In 2019, the solar pump market was valued at US $1.21 billion globally and is poised to grow to US $2.05 billion by 2027, which will amount to a compound annual growth rate (CAGR) of 6.8% from 2020 to 2027. Most countries are creating awareness for the adoption of energy from renewable sources to promote a greener environment and reduce carbon footprints.
Increased usage of solar powered water pumps will minimize CO2 emissions and greenhouse gases, and will help to prevent global warming. The demand for solar submersible pumps and smart solar pumps is on the rise, and with the rate at which new agropreneurs are emerging, the market will continue to grow larger with time.
Read on to learn about solar powered water pumps with good flow rate and how to choose the best solar powered water pump for retail.
Table of ContentsWhat is a pump flow rate?Factors that affect the flow rate of a pump5 different types of solar powered water pumps with good flow ratesConclusion
What is a pump flow rate?
A pump flow rate is the measurement of the amount of fluid a pump delivers within a given time. Flow rate is a crucial factor to consider when opting for a pumping system since it determines the quantity of fluid that can be produced within a certain timeframe. It is measured in cubic meters/hour (m3/h), liters/minute (L/min), or liters/second (L/sec).
Pumping systems are given a specific flow rate, and these recorded values are usually the maximum flow rate of the product. Each solar pump product undergoes critical examination under harsh conditions which allow for the evaluation of its maximum capacity. This experiment is what helps manufacturers learn about the efficiency and power of the pump.
High-flow solar pumps are addressing water challenges in developing countries. The inadequacy of effective water systems in some countries in Africa is creating an opportunity for the usage of solar pumps for domestic purposes.
Homes in Africa are now embracing pump systems, as they continue to be an efficient, environmental-friendly, and low-cost water solution. Kenya currently has the highest percentage of off-grid solar pump systems in Africa. But in developed countries like the US, solar pumps are utilized mainly for agricultural purposes (like farm irrigation).
Factors that affect the flow rate of a pump
Flow rates are affected by a couple of factors such as land slope, weather conditions, pump size, pump efficiency, etc. Before selecting a solar powered water pump for any remote application consider the following tips.
1. Slope of the land
The texture, shape, roughness, or nature of the land is what determines how water will move from the ground and through the pipe to the land surface. Land slope generally affects the velocity of water flow — high gradient gives rise to high flow, while low gradient reduces the speed of water flow.
For instance, a river flowing down the mountain is usually faster, but water speed reduces drastically when it is flowing through a leveled or flat surface. Thus, the slope of the water channels hugely affects water flow rate.
2. Climatic conditions
Weather conditions are one of the key factors that influence pump flow rate. In hot weather or moments of high sun rays, much energy is absorbed through the solar panels and used when pumping water.
On the flip side, cloudy days and less sunny days give rise to low flows because of the solar panel’s inability to absorb high energy. High-flow pumping is best achieved during sunny days.
3. The efficiency of the pump
The efficiency of a solar water pump is used to determine the amount of power a pump requires to produce fluid. Each of these solar fountain pumps is designed with varying efficiencies — some machines’ efficiency is low while some is high.
Pumps with low efficiency require more energy to pump out enough water. In such scenarios energy is usually lost to heat within the system. High-efficiency pumps use little energy to supply water with its given flow rate and pressure.
4. The size of the pump
When selecting a solar pump for your business, consider choosing a sizable pump, because pump size determines the amount of water a pump can deliver. Unlike small pumps (with small pipes) huge pumps generally convey more fluids.
Trying to pump water using a small hose pipe or pipes with kinks or blockages can create back pressure, and back pressure minimizes the quality of liquids that can make it to the other end of the hose. When pumping water through constricted space more energy is required to force the liquid through the small hole.
5. Horsepower of the pump
In a solar pump, horsepower has to do with the highest number of solar panels that the system can operate with. Most low-flow pumps are supported with so many panels since they require a lot of energy to work efficiently.
So, high horsepower doesn’t necessarily mean that their system will pump more water faster. While checking the stated horsepower, also confirm the flow rate value.
6. The solar photovoltaic level
Photovoltaic systems contribute to the alteration of the solar pump’s flow rate. When the number of PV cells is higher, energy absorbed is increased, which means more energy is converted. This will automatically increase the flow rate, implying that there is more energy available for pumping water.
Although solar powered pond pumps with a lot of solar PVs don’t always create a high flow rate, most low-efficiency solar pumps come with a lot of PVs to increase their energy absorption, but there is also a great amount of energy loss in the system. Buying low-efficiency pumps with many PVs might be a waste of money, because there is no guarantee of a high flow rate.
5 different types of solar powered water pumps with good flow rates
1. Submersible solar powered water pump
This solar powered water pump helps in water management and irrigation in farms and gardens. It comes with a set of amazing features, which include a permanent magnet DC brushless synchronous motor, stainless steel pump shaft, double bearing, alloy mechanical seal, MPPT controller, and more.
Max. flow: 6,000 liters per hourMax. head: 56 metersPower: 750 WPermanent magnet DC brushless synchronous motor
Price: $150.00 – $199.00
Anti-dry run protectionVoltage, current, power protectionStainless steel pump shaftDouble bearing; motor base works better under more axial pressureAlloy mechanical sealHas a longer working life and high reliabilityIntelligent water shortage protectionMPPT controller
Requires close monitoringDemands maintenanceWeather-dependent
2. Plastic impeller borehole pump
This is a high-flow DC solar submersible borehole pump with high-performance motors and an MPPT function controller. The product boasts a digital display of power, voltage, current, speed, and others. This is a popular type of solar powered farm water pump and can also be used in gardens, homes, and industrial areas.
After installation, the panels receive power through sun rays and use the energy to pump water. The equipment is reliable, effective, and accompanied by fantastic customer service.
Brushless solar pump with plastic impellerFlow rate up to 67 liters per minuteInlet and outlet: brass or cast ironHigh/low voltage protection, over current/overload protectionDigital display of power, current, voltage, speed, and other working conditions
Price: $86.00 – $90.20
High-performance motor with permanent magnetsHas vast application: farmland irrigation, gardens, domestic use, civil, and industrial applicationViable for desert water intake and deep well water intakeHas a longer working life and high reliabilityMPPT function controllerOffering pre-sales and after-sales support
System is dependent on solar radiation levelsRisk of theft of panels
3. High-pressure solar surface pump
These high-flow rate centrifugal water pumps are designed to deliver best-in-class efficiency. With its high-precision rotor, bearing, and pressure controllers, you can save a lot annually in terms of energy costs.
The pump has vast application and can be used for farmland irrigation, mountain water supply, underground water intake, and domestic water supply.
High-precision rotorPrecision bearingAll copper wire designDifferent material impellerLow lift and large flow, fit for irrigationWarranty: 1 year
High efficiencyHas vast application: farmland irrigation, mountain water supply, underground water intake, and domestic water supplyViable for desert water intake and deep well system water intakeUsed for low-viscosity fluid
Lacks suction power (uses rotation)Requires primingLow to moderate efficienciesWeather-dependent
4. High flow rate solar DC pump
This high-quality solar power pump comes with unique features which include corrosion resistance, stainless steel design, high efficiency, durability, etc. The pump impeller, casing, inlet, and outlet section of the pump and shaft were designed with stainless steel.
The solar pump is accompanied by some exchangeable components and mechanical seals. The MPPT controller enables easy operation and system management. This high-quality stainless steel impeller DC pump is mainly used to convey fluids like mineral water, pure water, soft water, light oil, etc.
Brushless solar pump with stainless steel impellerFlow rate up to 67 liters per minuteInlet and outlet: stainless steelMotor: permanent magnet DC brushless motorMPPT controller
Price: $88.40 – $113.00
Has high-temperature resistanceHas vast application: agricultural and domestic useGood corrosion resistanceHigh durabilityOffers easy cleaningMPPT function controllerOffering pre-sales and after-sales support
Weather dependentPossibility of shaft deflection and vibration due to high weight of the steel
5. Centrifugal solar powered water pump
DC brushless solar submersible water pump is an environmentally friendly water supply solution, fitted with a permanent magnet motor and built-in electronics that allow efficient use of energy from nature.
The DC solar submersible pump is programmed to adapt to the characteristic weather profile of any given area. It has a vast application which includes, drinking and living water supply, garden irrigation, agricultural irrigation, livestock water supply, and fountains.
Brushless solar pump with stainless steel impellerMax. flow: 1.0 – 68 m3/hrMotor: DC motor100% copper wire, cold-rolled silicon steel sheet304 stainless steel shaft, motor body, impellerAdvanced controller with MPPT technology for maximum solar powerLifetime: 8–10 years
Environmentally friendlyHigh energy storage capacity Has vast application: agricultural and domestic useWear and corrosion resistanceHigh durabilityMax. medium temperature up to +40ºCEasy installation, maintenance-freeOffering pre-sales and after-sales support
Solar powered water pump technology is ushering in new agricultural solutions to the world, especially in African countries. This technology now allows farming communities in Africa to irrigate their crops on a dependable yearly basis.
Each of these solar pumps are equipped with unique features that are focused on introducing solutions that match the needs of end users. Some of this equipment is accompanied by software systems that enhance their operation and functionality. Check out some solar powered water pump suppliers’ products on Alibaba.com to discover more efficient options.