Articles
LOW COST PLANT FACTORY USING HYBRID ELECTRODE FLUORESCENT LAMP (HEFL)
Article number
907_21
Pages
157 – 160
Language
English
Abstract
In recent years the plant factory of this complete closure type attracts high attention because it is not influenced by the climate condition, and supplies a safe and steady harvest.
However, reduction of initial and running cost of lighting or air-conditioning is a big subject, so a light source of high illumination efficiency and less generation of heat is required.
A hybrid electrode fluorescent lamp (HEFL) was developed from the back light of a liquid crystal television.
Compared with LED, HEFL is less than 1/4 price, has about 2 times the luminous efficiency, and can be created with various wavelengths.
Furthermore, HEFL excels in many respects, such as energy saving, small size, light weight, long life, and availability of super-proximity cultivation due to low generation of heat, as compared with various light sources.
Several leafy vegetables were grown using the light source as HEFL, fluorescent light, and LED. The growth of the plants under HEFL was significantly promoted, and quality of the product was also high, and input energy for unit product was minimum, so HEFL was suggested to be very effective as a light source for plant factories.
It was also possible by using HEFL of a different wavelength according to a growth stage, to get earlier harvest and improved health-promoting functionality.
However, reduction of initial and running cost of lighting or air-conditioning is a big subject, so a light source of high illumination efficiency and less generation of heat is required.
A hybrid electrode fluorescent lamp (HEFL) was developed from the back light of a liquid crystal television.
Compared with LED, HEFL is less than 1/4 price, has about 2 times the luminous efficiency, and can be created with various wavelengths.
Furthermore, HEFL excels in many respects, such as energy saving, small size, light weight, long life, and availability of super-proximity cultivation due to low generation of heat, as compared with various light sources.
Several leafy vegetables were grown using the light source as HEFL, fluorescent light, and LED. The growth of the plants under HEFL was significantly promoted, and quality of the product was also high, and input energy for unit product was minimum, so HEFL was suggested to be very effective as a light source for plant factories.
It was also possible by using HEFL of a different wavelength according to a growth stage, to get earlier harvest and improved health-promoting functionality.
Authors
H. Inden, Y. Akamatsu, T. Matsuda, M. Yamamoto
Keywords
health-promoting phytochemicals, Lactuca sativa L., light source, rororossa
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