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Greenhouse light Characteristics
Commonly used greenhouse lamps include ordinary incandescent and fluorescent lamps, high-pressure sodium lamps, halide lamps and LED grow light. The lamps differ in several important respects:
• efficiencies in generating radiation per unit power (energy use efficiency)• capital cost per lamp (including ballasts and housings)• bulb lifetime, durability and stability• effects on crop performance• range of emitted wavelengths
Incandescent bulbs emit large amounts of radiation in the infra-red, and can be a significant heat load. They are inexpensive, but have poor energy efficiency and are not as durable as some other … Continue Reading