The world's largest all LED lighting plant is put into operation in Japan
time：2017-07-29 14:26:00 browse：4729次
Japan Mirai company (Headquarters: Tokyo) in Miyagi Prefecture, he built all the cultivation lights, all use LED artificial light type plant factory. According to the company, this is the "world's largest," the full use of LED lighting plant plants. 10 thousand lettuce can be produced every day.
Mirai will transform the existing buildings into a plant factory at the Miyagi Renaissance Industrial Park in the SONY technology center in Sendai. As one of the business by the Japanese Ministry of economy of northeast economy and Industry Bureau, Mirai prior to the development of environmental technology and suitable for cultivation of plant factory LED lighting development as the theme, GE and Japan jointly conducted empirical experiments. The design, construction and cultivation of the whole plant is under the responsibility of the Kajima company in japan.
The plant's biggest feature is the use of GE, Japan's LED lighting for plant plants, using a technique that can evenly disperse highly directional LED rays and irradiate different wavelengths of light at the growth stage of plants. For example, in the early stages of the nursery, the white light mixed with the red LED light source will irradiate the white light to promote photosynthesis. Then, irradiate the reddish light emitted by LED lighting with a red blue LED light source to promote the growth of leaves and rhizomes. Near harvest time, light rays are again irradiated to promote photosynthesis. By using this method, the power consumption is reduced by 40% compared with the fluorescent lamp only, and the output of the same area is increased by 50%. In addition, the Mirai did not disclose specific technologies related to LED lighting wavelength.
In order to use the ceiling up to 7m of the building, this time also developed a 6m high 15 layer cultivation stand. Not only the lighting appliance and the nutrient liquid circulation system are integrated into one body, but also the functions are improved, and the cost is reduced by utilizing the common planting frame material and other measures. In addition, Kajima has also introduced the cultivation environment simulation technology, the use of the company after cultivation in the factory construction process in plant technology. According to the company introduced, in order to avoid the multi-storey planting frame in the height of the direction of the temperature, air flow and illumination obvious differences, the repeated calculation, and design the air conditioning and equipment configuration layout.
Through the use of LED lighting and 15 layers of cultivation stands, increasing the yield per unit area, and improving the income of the plant factory. According to Mirai, the retail price of head lettuce is around 200 yen at present. Although the company did not disclose the wholesale price, but said "vanilla" and other outdoor cultivation is not much difference, and sometimes even plant factory cultivation cheaper. The average price of head lettuce is higher than that in the open air, but when the price of fried lettuce increases, the two will be basically the same. (Mirai, representing the board of directors, Nagashima Muramoji).
At present, the plant is cultivated lettuce, endive, erect flower and leaf lettuce, lettuce and cress and other 6 kinds of leafy vegetables, from sowing to harvest time is 33 ~ 35 days. The plant was put into operation in early May 2014 and began to supply in June 20th. Cultivated vegetables have begun to be sold in local supermarkets. The plant will be officially put into operation in the summer of 2014, with annual sales target of several hundred million yen. Mirai and other companies also intend to use the acquired technical experience to export plant factories.
