*. Considering the small amount of delivered water, this pump LJ10 / LJ20 is not suitable for agricultural irrigation, but the ideal choice for a small family's garden or small rural areas.
LIUJIA Solar corp (Germany) offers a new type of family mircroirrgation system - Liujia solar drip system (LiujaSD system) can be operated in rural areas in devolping countiries for the gardenirrigation in industrie contries. Using the latest technology and a small solar panel up to 12 Wp, the pumping pressure reaches up to 1 bar (2 bar for Type LJ 20) and the pumping capacity up to 90 liters per hour. A strong point is, that the pump works still, if even the weather is hazy.
But this new type of connecting family micro irrigation and Solar Liuja-Drip-System (LiujaSD-System) e.g. vegetable garden or tree nursery is very interesting for developing countries as well as industrial countries. E.g. Typ LJ10 just needs a small solar panel of 12 Wp to deliver 90 liter water per hour. The pump can reach a water pressure of max. 1 bar (type LJ20 till 2 Bar). The Solar wellpump can be directly connected to the Drip-system, which is very useful for small farming areas. With this microirrigation system, you are going to save a lot of electricity, pump stations, automatical gearshifts as well as valves, but nevertheless get the same advantages like a conventional microirrigaton system. With LiujiaSD-System famers can plant precious plant sorts, which were not possible before. Therefore the economical situation and the profit of the famer increases considerably. Remoted areas will become more interesting for people.
LiujaSD system has put great effort into developing a user-friendly irrigation system. This latest innovation is the possibility of connecting a solar well pump to a drip-system, which is very useful for small agriculture irrigation. This will fulfil the needs of family farm or those who are unable to attain advanced microirrigationsystems that require electricity pumps, automatic filters. etc.. but will allow the farmer the same advantages as a sophisticated irrigation system. Considering the small amount of delivered water, this pump LJ10 / LJ20 is not suitable for conventional agricultural irrigation, but the ideal choice for a small family's garden in industrial countries or small farming area in developing countries.
Acording to our experience, by used the very low drip 0,2litter/hour can this system irrigate a garden area of up to 300 m2, depending on the plant sort, sun intensity and the deepness of the waterlevel.
Dazu verwendeten Zubeh?hre, sieh bitte "Option f¨¹r Bew?sserungsystem"
Solar micro irrigation
An example:
A family garden has 30 two-year-old fruit trees, 50 one year old flowers and 10 one year old bushes. Every fruit tree uses approx. 2 l of water per day, every flower needs approx. 1,50 l per day, every bush then uses approx. 2,50 l of water per day: this makes 30X2=60 plus 50X1.5=75 plus 10X2.5=25. The garden owner requires altogether a water quantity of approx. 160 liters. If he waters or pours the plants in a conventional way, he needs 800 liter water, this means he wastes five times more water in order to achieve the same effect.
After the required water quantity was found, the garden owner must now find a water source. Rainwater tons, wells, creeks or lakes are conceivable. Here are some points, which should be followed:
1* The water pressure of the main water line and the water pressure in the distributor water line must be well synchronized, because their sum is the entire produced pressure of the pump. LJ10 reaches a maximum of 10 m i.e. this pump produces a pressure of max. 1 bar (and LJ20 produces max. 2 bars). If the owner uses LJ10 in a 6 m deep well (0.6 bar for the well), there still remains 0.4 bars of pressure for the water lines. A higher pressure in the water lines has many advantages. In the same case, the pump LJ20 produces 1,4 bars of pressure in the water line for the same amount of water per hour. This depends on the financial aspect and the taste of the end-user. LJ10 cannot be used for deeper wells under 10 m.
2* As you can see here, it is advantageous to use water from rainwater collectors, from creeks or lakes, because of their small water delivering height. Longer distances to such water resources do not cause any problems for the Liujia Solar pump. After our experiences, the pump loses at a distance of 100 m approx. 0.1 bar through friction loss.
3* The garden owner would like to be sure that his flowers are supplied, when he is on vacation. He installs a LJ10 in the well, so that his flowers and his trees are automatically irrigated with the LiujiaSD system. Since the entire system is very low-priced and easily to extend, he has only to take care of the hidden installation of the water lines in the garden. It is important here to regulate the pressure of the main water line and the distributor water line. You can use a 13 mm black PVC main line, the distribution line as a has an internal diameter of 4 mm. In order to achieve a regular pressure in the main line, it should not be longer than 30 meters and are placed in an O-form or an 8- form.
4* In the appropriate point of the main line, the garden owner taps the water with a coupler and combines it with the distribution line, which is connected to dripping heads. Every distribution water line should be combined with no more than 10 water heads, because of its small water flowment. The distance between those heads should be no more than 1 m. It is possible to try out all combinations, in order to find the ideal dripping head for every plant.
5* In the conventional drip irrigation system, one dripping head has often water output quantity of 2 l/hour. Since this is too much for a plant, some computer-controlled valves must be installed, which can be switched off in certain time intervals. But the LiujiaSD system is so variable that the dripping heads can supply every plant with its individual water requirement.
6* At the end the main water line should be connected to the solar pump with a filter. The filter is used to prevent that particles, which are in the water, clog up the dripping heads. Of course, this filter must be cleaned from time to time depending on water quality. The pushing movements of the pump also keeps the water heads cleaner than conventional pumps.
7* If all drip heads have been connected, the garden owner can start the pump. On sunny days, the water pours through the network very fast. The pressure in the water lines must now be adjusted, so that all distributing lines are supplied. First, turn on those drip heads, where no water pours out. Because the second water line accumulates air which hinders the water. In this case, when the whole air leaked out, slowly adjust all dripping heads until water drips out. This increases the pressure of the internal water line, in order to guarantee sufficient pressure for remote distribution lines. The positioning occurs ideally via a period from two weeks until the dripping heads supply every plant with its individual water requirement.
Of course, there are enough details, which cannot be explained in a short overview. But this should show that the Liujia Solar Drip System is a "open" system, which can be individually combined and extended under professional support of the distributor.
