The choice of an artificial light source requires some knowledge. Lamps used for growing plants indoors are divided into the following types:
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Each type of lamp has its own advantages and disadvantages. It is necessary to consider not only the quality of the lamp, but also the type and size of the room. So, for example, some lamps emit a significant amount of heat, which can be a plus for large greenhouses in winter, and a minus for grow boxes, where you have to get rid of excess heat by improving ventilation.
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Comparative analysis of phytolamps
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Luminescent
Mercury
Metal halide
Sodium
LED
PAR efficiency 20-22% 10-12% 16-28% 26-30% 99% Service life 10-15 thousand hours 10-15 thousand hours 6-10 thousand hours 16-24 thousand hours up to 100 thousand hours hours Luminous efficiency 50-80 lm / W 45-55 lm / W 80-100 lm / W up to 150 lm / W up to 104 lm / W Cons, application restrictions Not suitable for large areas, unsuitable spectrum for plants Economically disadvantageous Low color rendering index Low color rendering index None Energy consumption 15-65 W / h 50-400 W / h 70-400 W / h 70-600 W / h 1-5 W / h per LED Ripple factor 20-70% 63-74% 30 % 70% Less than 1% efficiency 50-70% 50-70% 50-70% 50-70% 95%
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