Economic lifetime of light sources in greenhouse vegetable growing
Abstract
Economic lifetime of light sources in greenhouse vegetable growing
Incoming article date: 08.01.2021Currently, high pressure sodium lamps are the light source in greenhouse vegetable growing. The most promising sources of artificial lighting are LED-based irradiators. They can provide a cooler temperature environment to bring plants closer to plants. The aim of the study is to determine the economic life of sodium and LED light sources in greenhouse vegetable growing, taking into account their degradation for the harvest. LEDs, like sodium lamps, degrade during use. This leads to a decrease in the light (photosynthetic photon) flux of light sources and, as a result, to a decrease in yield. Due to this certain functional dependence on the luminous flux level, the economically feasible life of the light is predicted.
Keywords: light sources, luminous flux, LED lamps, sodium lamps, productivity, energy efficiency, economy