Solar pumps. Components and design.

Solar pumps. Components and design.

In fact, before we start talking about solar pumps that can be used for irrigation or other loved to recall and remind myself that what we offer here information about solar energy based on the experience of competent engineers and we like to thank them all for their capacity.

Solar pumps

And I love that we try very hard to simplify the information and our main goal is to make solar energy available and understandable to all, at least for anyone who wants to search and know this is gigantic flat, we are here to keep your foot on the way and explain information in simplified form, even at least to keep you alive. Grew dealing with one can judge him because he was a professional in the field or not but the basic ambition is to teach everyone that nothing hard to learn and to solar applications that everyone can make accounts and choose their products and even installed it himself if he wants.

The points are going about solar pumps in this article:

1. the advantages of solar-powered pumps:

We will take up where its advantages and where to use and what is the difference between them and other other pumps

2. components of lifting systems solar water and irrigation:

And we'll talk in a little more detail on the components of the overall system of pumps and motors types the same electricity connected both reluctant or continuous and reservoir and its usefulness and can install batteries in the system or not, we will pass quickly also on electrical protection circuits and their utility in the system and also plates Solar energy is the source of the electricity generated by solar energy.

3. solar pumps systems design steps:

And we'll remind him step by step calculations to determine your needs, capacity, pump capacity, type and pressure tank volume calculations and the number of solar panels you'll need and other details.

1. solar pumps advantages:

In many villages, oases away cities electricity services may not be available ground and also there is no ongoing source of water like rivers and others and thus meet the needs of the inhabitants of these areas, both water used for irrigation and agriculture or drinking personal use depends mainly on water wells Groundwater that may be low or large depths and in this case they are in need of pumps (trmbat) for lifting water as ground or governmental power is often not available in these areas, the source of energy used in the management of pumps (trmbat) raise diesel is either water or using misleading Solar ring and let us make a simple comparison between solar pumps, pumps diesel managed

Advantages disadvantages need costly maintenance operationsYou need to follow and the supply of fuel downA small lifeProduce noise and pollutants to weather quick and easy installationCan be carried from place to placeThe basic price is relatively smallWidespread use of diesel pumpsRelatively large costNo need to follow to rememberLarge virtual lifeVery limited maintenance operations and inexpensive No noise and don't emit pollutants solar pumps

 Economic studies have proven and practical experience that the capital reimbursement period for solar pumps compared to diesel pumps ranging from 3:5 years note there is still supported by most Arabic countries to traditional fuels and all indicators confirm policy shifts to support clean energy As an alternative to conventional energies of polluting the environment.

The solar system can be supplied for lifting water with solar tracking systems increase the efficiency of the pumps at least 30%

Common applications

Lift water from underground wells by using submersible pumps for irrigation to drip or spray.

Lift water channels using surface or submersible pumps for irrigation by immersion for all other applications.

Raise water from wells in remote areas for drinking and other purposes.

Surface pumps in turn water to purify swimming pools.

2. water lifting systems components and irrigation on solar energy

Solar pumps

First: solar panels

Solar panels or PV or alvoltodueh is the main source to generate electricity by converting solar radiation falling on them to constant power and we had talked about it in detail and in an earlier thread entitled solar panels to generate electricity.

II: alanfertr and voltage regulator

If using a DC motor powered pump DC, all you need is a control circuit for regulating voltage inside the pump Controller MPPT.

If using a DC motor powered pump in this case the system will need a unfetter to convert the current from DC constant (which produces panels) to AC AC and most unfettered used in the pumps of type 3 won most of its internal voltage regulator.

And you'll also need some simple circuit protection to protect the motor and the pump from damage in the event of pregnancy may result in a paid a bit extreme in piping or some impurities inside the pump or even dry water.

III: solar pumps

It can be divided into several types depending on some different variables as follows: divide the pumps depending on the type of electric motor used:

Restore stream engine AC:

And as we mentioned just needs to have unfetter and inside Organizer for DC converter for voltage output from solar panels to AC pump and motor management should exist in an organized effort to regulate the circuit voltage and current outside panels but most unfettered now contains an internal Organizer with mp pt And always be unfetter 3 WINS (3 phase)

AC pumps systems are used in large projects is also used in purification and recycling of water in swimming pools and sea water desalination and drinking water projects.

DC: DC motor

Engine powered pump a steady stream just needs a structured effort to organize the effort out of planks mp pt controller to match their requirements and in fact this type is more efficient and less need for maintenance operations and his circuit is not complicated but it remains higher than cost zu who works AC as it is not widely available in the market so this type is not wide open.

Using these cylinders in small and medium-sized enterprises in applications up to about 3 kilowatts capacity. It is suitable for applications such as fountains, gardens, and drinking water for livestock, or small irrigation projects.

Partitioned pumps based on type of pump itself:

Positive displacement pumps (Positive displacement):

Or what he knows best known biography baltarmbat bulks and reciprocating pumps or cyclones and raise water to higher levels of any NHA generate higher compression but capacity or flow rate (flow rate) is lower than the dynamic pressure (Katha prevented have the same capacity)

Dynamic pumps (Dynamic pumps):

It is non-subjective drumbeat preparation and most famously centrifugal pumps and the genre wide open to science is the type used for raising water in homes and are flying high flow rate of water from its counterpart with a positive offset (if they have the same capacity) but flying water to lower altitudes which they generate z Cover less than those with positive displacement.

Split solar pumps depending on the place:

Solar pumps

Surface solar pumps:

Surface pumps be suitable if the depth of water will not exceed 7 metres and that place on level ground and stretch her pipe for lifting water from place to watering and are suitable in applications raise water from rivers or canals or watering of tank.

Solar pumps submerged:

Solar pumps

Submerged pumps used to raise water from great depths as well water, wells and others that are immersed in the water itself and most of the currently available species be multistage as they come with special protections don't even protect herself from work in case of a drought water so as not to load quite so much damage.

IV: the tank and batteries

In fact, a lot of people asked me a question that is. Do you have connecting batteries to solar trmbat if you need water in periods of night?

Scientific answer is of course possible fie circuit breaker system can be connected to the batteries but if solar pumps lift system to pay I have another question, what is the use of batteries? Isn't useful it management pumps for water supply during periods of absence of the Sun? And also you will need a reservoir of water during karat sundown so little pump capacity can be magnified, so that panels of the pump system providing both water quantity expected to be used all day sunshine period only and that are approximately 5 hours a day and the solar pump lifting water in The tank then you anytime day or night.

And of course no comparison between the reservoir and the price of batteries that need maintenance and change each term not exceeding 5 years in the best types of batteries available in Markets.

3. solar pumps systems design steps

First: the water consumption rate per day

Water consumption rate is for people, livestock and crops per day depending on your needs, you can calculate it with the following table:

Number one thing water consumption (litres/day)
(All daily uses) 350
Cow milking 80
Bull or buffalo 70
Poultry 0.4
45 horse
Small trees 50
100 big trees
Agricultural crop by crop type and area cultivated and can be obtained from tables for the Ministry of agriculture.

II calculate the required flow rate for solar pumps water flow rate:

After your accounts to know average daily usage of water in litres. The required flow rate calculation step comes from the pump to meet your daily needs. 

We know that the average daily sunshine duration is five hours only. During this period, we want to believe that much of the water required for example:

If we're having conducted their own accounts to get the amount of water that we need daily we found we need 10000 litres of water a day.

Since we mentioned that average daily sunshine in our Arabic is almost five hours we divide this number by 5.

10000/5 = 2000 l/hour. Or the equivalent of 34 l/min.

* Note: we converted to a liter/minute dividing number 60 because most pumps touted flow rate l/min unit (L/min)

III calculate the dynamic pressure TDH (Total Dynamic Head)

 is a short vertical distance that we need to raise the water to it's space that solar pump will raise the water vertically any reverse gravity. They tell us about the desired pressure of pump supplied to lift water from the depth of the well to the highest point in the tank.

Can be calculated by collecting the three following values:

1. vertical distance in meters from the ground surface to the water level in the well or river or Canal (any depth of water on the surface of the Earth)

2. the distance in meters from Earth's home to the highest point in the tank.

3. the value of lost come into contact within the piping (also calculated value is in meters and can be obtained through certain tables supported on Qatar piping length and shape of the up links on the line) to simplify it, considering you're running initial accounts of the subject you can calculate this value as equivalent to 7% of the total Previous values for example:

If the depth of water 100 meters above the ground and the distance from the ground to the top of the tank 7 meters is almost come into contact loss = 107 * 7/100 = 7.49 meters. Approximately 7.5 Meter

It becomes high dynamic pressure TDH = the sum of these three values be m = 100 + 7 + 7.5 = 114.5 meters.

IV: choosing appropriate solar pump pump selection

We first calculate the required pump capacity by multiplying the following values:

The effective rate calculated by units (liters/minute) * high dynamic pressure the tastiest we calculated in meters * 0.0001635 = pump capacity by the kilo watt in case that, for example, would be presumed majority equation as follows: pump capacity = 34 * 114.5 * 0.0001635 = 0.6365 kW (roughly equivalent to 1 HP)

* Note: 1. those horse 0.745 kW

But what we would like to note is that you must not think you once knew capacity pump going to buy one HP pump so simple you might buy one already horse capacity pump but may be designed to operate under less pressure than is appropriate for your situation or they may provide less flow amount appropriate for your case for It must learn to choose the pump is in knowing all of the flow rate and high dynamic pressure by logging into the manufacturer's design maps for the pump to enable you to choose the right pump for you completely and that meet your needs based on your condition.

V: select appropriate solar array

 size actually knowing solar pump capacity the way you did basically the same pump selection pump selection is based on the flow rate and high dynamic pressure.

But he was determined to find out the size of pump capacity matrix appropriate solar panels to provide electricity needed to run your solar pump.

In the previous example for example we need to pump their college 0.636 kilowatts so you will need the amount of solar panels provide you this much electricity and add a safety factor because of losses in innovatory and other circuit components and also in case of fluctuations in weather conditions, multiply  This value is in 1.5 means that we for example in this case we'll need solar panels matrix believes electric capacity = 0.636 * 1.5 = 0.954 kW

We'll need a matrix one capacity plates kW (and that's usually going to be the four planks per capacity of 250 Watts)

May we put this topic which who wants to start installing solar pumps system on track to find out what he needs and what he needs and how to start thinking about it and I know there's a lot of details that didn't mention it and we'll try to detail these things together in the comments on other topics.