From primitive greenhouse to Photovoltaic greenhouse-- looking at the Evolutionary History of Agricultural greenhouse

Nowadays, we can also eat fresh and delicious out-of-season fruits and vegetables in the cold winter, which naturally contributes to the greenhouse. In the view of many people, greenhouse should be the product of the progress of modern science. However, as early as more than 2000 years ago, our great ancestors were able to use certain conservation facilities (the prototype of the greenhouse) to grow a variety of vegetables. With the development of the times, the agricultural greenhouse has already changed from the original warm house to the photovoltaic greenhouse, which has opened up a broader road for the green growth and characteristic development of agriculture. Today, let us feel the self-evolution of the greenhouse in a "journey through".

The greenhouse is more and more millennia, you sing from the East and the West, and I will take the stage.

China is one of the countries with the earliest origin of greenhouse cultivation in the world, and the use of conservation facilities to cultivate vegetables has a long history. According to the official biography of the Book of the Han Dynasty, "Taiguan Garden planted winter leek mushrooms, covered with a house Pang, burning warm fire day and night, waiting for warm gas to be born, and faithful ministers thought that this was not the right thing to do." Thus it can be seen that as early as the Western Han Dynasty, the ancients began to build some simple facilities, and used fire to heat the buildings and cultivate out-of-season crop growth for people to enjoy.

In Europe in the 3rd century AD, Tiberius, the ancient Roman emperor, loved to eat American cucumber, which is native to the tropics and liked the hot and humid environment all the year round, so at the end of his normal growing season, Tiberius planted the snake melon in a wooden box containing soil and put it in a room. Glass was not invented at that time, so he installed mica sheets in the room, which not only let the sunlight into the room, let the snake melon absorb the light and heat of the sun, but also maintain the temperature of the room. From the present point of view, the principle of growing snake melon at that time is basically the same as that of modern greenhouse.

The early greenhouse is often faced with the problem of heat preservation, and the history of scientific and technological progress of greenhouse is also a history of research and exploration of greenhouse heating equipment. The ancient Romans built pipes under the floor of the greenhouse to transmit heat, the French burned feces to heat the greenhouse, and the British used charcoal and hot water to keep the room warm in the 17th century. Similar to it is the standing earth wall open paper window fire-type greenhouse in China during the Ming and Qing dynasties, which can be heated by fire and is generally cultivated with horse dung. The east, north and west three earth walls block the wind, and inclined paint paper windows are installed in the south, which can not only use the fire to heat up, but also make full use of solar energy, which is the most advanced greenhouse at that time.

On the other hand, Europe began to use the heat of solar radiation to promote greenhouse warming, which began with the large-scale use of glass after William III's window tax was abolished in England in 1851. The energy saving, environmental protection and convenient ventilation and dehumidification of glass greenhouse are the reasons why it is sought after. With the progress of production technology, greenhouse construction has entered a real golden period, and left many examples for later generations. However, the modern greenhouse in China did not start until the 1950s, and the roof-type large glass greenhouse was built in North China. The development history of greenhouse in China and the West is the history that you sang and I stepped onto the stage. in the development of thousands of years, it has gradually formed a modern characteristic agricultural system represented by specialization, intensification and scale.

Greenhouses built by the French between 1834 and 1836

Science and technology clever face change, photovoltaic greenhouse opens new poem

In the process of modern agricultural development, science and technology investment accounts for more and more proportion of total agricultural investment, and the effect of agricultural industry development brought by science and technology development is more and more remarkable. The traditional greenhouse in the development process of continuous application of various technological innovations brought about by the change, thus pushing the development of agricultural industry to a historical peak, photovoltaic greenhouse is another successful greenhouse development "face".

Photovoltaic agricultural greenhouse is a greenhouse integrating solar photovoltaic power generation, intelligent temperature control system and modern high-tech planting. The greenhouse is covered with solar photovoltaic modules, which can meet the lighting requirements of the whole greenhouse crops while ensuring solar photovoltaic power generation, which can not only save cultivated land, alleviate the contradiction between people and land, create clean energy, but also support the irrigation system of the greenhouse, supplement light for plants, solve the heating requirements of the greenhouse in winter, provide greenhouse temperature and promote the rapid growth of crops.

In the practice of combining photovoltaic and agriculture, photovoltaic agricultural greenhouses use solar thin films as new covering materials to carry out construction modes according to local conditions in various modes, and to ensure various functions of greenhouses to the greatest extent. Among them, Hanergy, the world's leading thin film solar manufacturer, has been at the forefront of photovoltaic agricultural greenhouse construction through continuous innovation of its own technology. Laminated safety glass of no more than 5mm ensures that the transmittance will not decay for 20 years, and it can also ensure better power generation efficiency under high temperature and high humidity conditions. At the same time, in the classification of light, Hanergy really achieved "take what I use." Uniform red and infrared light transmission ability, to ensure the growth of most economic crops, to avoid the wavy growth of crops; most insects compound eyes can distinguish color, for short-band blue, green, yellow light projection is sensitive, but for red light invisible, so the use of opaque violet to yellow light segment of thin film solar glass, can play an insect control effect through ecological methods, reduce the worry of pests. At the same time, it effectively isolates ultraviolet rays and reduces the occurrence of plant diseases. The advantages and disadvantages of film make the greenhouse more practical, adding new guarantee for agricultural development.

Hanergy photovoltaic agricultural greenhouse

The photovoltaic agricultural greenhouse covered by Hanergy thin film has also been fully written in the province. First of all, after installing the film, it can help shade the greenhouse in summer, thus reducing water evaporation and irrigation water consumption, thus saving users a sum of money. Secondly, the film as a greenhouse covering material can also generate electricity, the dual protection of planting and power generation not only saves bit by bit, but also benefits in the long run. Thirdly, in order to alleviate the shortage of land, thin film makes full use of the space above agricultural land and does not occupy land resources alone, which realizes the positive development of intensive agriculture and creates additional benefits. Three hearts work together, saving is the material benefit earned. Science and technology has helped the greenhouse to achieve "face change", but also created a new ecological agriculture income model, Hanergy is through its own efforts, so that more people benefit from agricultural development, get real benefits.

Hanergy photovoltaic agricultural greenhouse

From the original greenhouse to the photovoltaic greenhouse, after thousands of years of evolution of the greenhouse, we feel the wisdom and innovation of human beings in the process of technology utilization. The application of all new technologies is to better serve agriculture and promote the healthy development of agricultural industry. With the increasing popularity of Hanergy thin film solar energy, it is believed that in the near future, we can see the vigorous development of China's agricultural photovoltaic greenhouse.