New trend of low carbon and high efficiency — Desert PV agriculture

author: SUNPRO POWER Marketing

2022-06-06

Midsummer is coming, and the world is busy harvesting crops. People engaged in agriculture should be very busy in recent days. They are busy harvesting and sowing at the same time. At this time, the twenty-four solar terms in China are also called “芒种”（grain in ear）, which refers to the busy farming season.

Agriculture, as the basis of human existence, has always been the focus of attention. Especially in the context of soaring food prices, the discussion on how to improve agricultural output has been very hot recently. Even began to discuss the planting of lunar soil. However, compared with the remote moon, I feel that desert greening is more practical, so today I will talk about desert agriculture.

Desert oasis - Israel

Desert agriculture may be an absurd concept, but in fact, a country has turned it into a reality and has become a leading agricultural power in the world. This is Israel.

Israel is a country with extreme water shortage, barren land and serious desertification. It is very deficient in mineral resources, land and water resources. More than half of the land is desert, and the arable land area is small. Many of them are hills full of gravel and sand. The remaining half of the arable land must be irrigated before farming.

Due to the lack of water resources, drought and little rainfall, the water in the country mainly depends on the water of the Jordan River, the Galilee sea (which is a freshwater lake) and seawater desalination. Therefore, in terms of general agricultural technology, most of the natural conditions in Israel are not conducive to agricultural survival and development.

But this country, with 2.2% of the total population engaged in agriculture, has fed 7.5 million people. The grain self-sufficiency rate has reached 96%, and a large number of crops such as grain, coffee and livestock products will be exported every year. All this is due to the development of modern agricultural technology.

North-South Water Transfer and Irrigation Technology

As for agriculture, it is necessary to ensure water source to feed crops. Northern Israel has a Mediterranean climate with abundant precipitation. The southern region has a tropical desert climate with little precipitation. In order to ensure that agricultural production can obtain abundant water supply, Israel transmits water from the north and the middle to the south through pipelines, and uses the world's leading irrigation technology to improve water utilization.

Representative drip irrigation technology

Representative drip irrigation technology

Desalinated brine

There are many irrigation technologies. In addition to the well-known drip irrigation technology, there is also the use of electro dialysis to desalinate salt water for planting, that is, desalinated salt water irrigation. In inland and coastal countries with a large amount of salt water, this technology can effectively use the water sources of salt lakes and oceans to develop agriculture. It is very useful for restraining desertification and improving environmental climate.

Of course, the desalination cost is high, mainly the power cost. Therefore, advanced and efficient power technology is needed to reduce the desalination cost. In this regard, Israel's agriculture has high-efficiency power technology. When combined with drip irrigation technology, the composite technology irrigation system represented by photovoltaic light salt water irrigation came into being.

Photovoltaic desalination irrigation

In fact, the whole device is not complicated. It consists of three systems. That is, photovoltaic power generation and pumping, electro dialysis desalination, and drip irrigation and water delivery management. Among them, energy monitoring switches and crop observation devices can also be added to achieve accurate management, which will be explained in detail next.

First of all, the photovoltaic irrigation system is composed of photovoltaic power generation system, photovoltaic variable frequency drive system, photovoltaic screw pump (a special water pump connected to photovoltaic inverter), filtration and water storage system, water delivery pressure and flow detection system, solenoid valve and water delivery main and branch pipes. The main body is a pumping and filtering storage device based on photovoltaic power generation as the power source.

Photovoltaic irrigation system

source: Network

On the basis of photovoltaic pumping, the alternate use of light salt water and fresh water is added. The desalinated salt water produced by electro dialysis is used daily, and its salt content is 2 ~ 4g/l. Crops can still grow and obtain high yield. Agricultural irrigation can be completed only by using fresh water irrigation at the end of growth to prevent soil salinization. It is worth noting that the electro dialysis device uses solar power to complete the desalination of salt water, which can greatly reduce the desalination cost.

After ensuring the water source, the water conveyance control device at the end can start to work. After the main valve connected with the water storage tank is set, the drip irrigation pipe is laid near the root of the crop, so that the water can be dropped into the soil in the root zone of the crop evenly and slowly. The whole irrigation system is completed.

Build a high-quality irrigation system foundation

For desert areas that are not suitable for agricultural development, agricultural development can be achieved by making use of the environment and collecting the development conditions. Strong power support can also greatly reduce the production cost. Therefore, the purchase of solar panels as the power core is directly related to the operation of the whole system. In addition, in the desert environment, the ability to resist wind and sand is also very important. Therefore, SUNPRO POWER recommends this use it。

SPxxx-120M10.

The maximum power is 415w, M10 type monocrystalline siliconn half cells. With 10-busbar design, the conduction efficiency is better, and the maximum efficiency can reach 21.23%. For sunny deserts and desert areas, the photoelectric conversion rate is very high, and the theoretical power value is easy to achieve. Quiet operation. No need to worry about noise pollution. The restriction of installation location is low, both on the ground and on the roof. The operation can be started only after the equipment is put into operation, and no additional raw materials are required for power generation. It can generate electricity for 12 hours a day. Efficient and uninterrupted.

In addition, agricultural development will be seriously affected by the weather, so the product quality must be excellent. Our battery life is longer, with a 12-year warranty and a 25 year performance guarantee. It has strong environmental tolerance and can withstand 2400pa wind pressure and 5000Pa snow pressure. It has strong adaptability to wind, sand, rain and snow. It has won many international quality certifications and fire protection certifications, such as Tier 1, TUV, CE, ISO, etc., to ensure that the product investment can quickly recover the cost and help achieve profitability.

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If you are considering the replacement of agricultural energy, or people in the agricultural machinery industry, you may wish to consider the photovoltaic agricultural system, which can effectively reduce the previous energy costs. In addition, if you have any questions about construction and design requirements, you can also consult us. SUNPRO POWER can provide the design scheme of photovoltaic module system.

Thank you for watching. I wish you a bumper harvest!