Analise de diferentes tecnologias de iluminação artificial para redução do consumo de energia eletrica na produção de mudas de crisantemos em ambiente protegido / Analysis of different artificial illumination technologies aiming energy consumption reduction in chrysanthemum nursey production in greenhouses




The type of artificial illumination employed for chrysanthemum cultivation in greenhouses to induce photoperiod effect will determine its growing rate as well as the energy consumption. Incandescent filament is currently employed for artificial illumination in chrysanthemum nursery to induce photoperiod effect. Nowadays new illumination technology is being tested aiming energy consumption reduction. The application of illumination based on electrical discharge in sodium or mercury vapor, as well as tubular or integrated compact fluorescent bulbs in chrysanthemum cultivation is identified as the objective of this research work. The experimental part of this work was carried out in a commercial greenhouse model employing five chrysanthemum variety as Papiro, Lindy White, Mona Lisa Rose, Euro Speedy and Stateman during winter and summer period. Parameters employed to the study variety behavior included: production per area, fresh matter weight, presence of flower sprouts and moisture content. The parameters known as electrical variables, like consumption, demand and power factor, together with the treatment energy efficiency index were used to analyze the employed illumination technologies and light bulbs type. Results showed differences between weight of fresh flowers and moisture content for the flowers variety under consideration. Productivity per unit area was noticed to be larger for discharge technology when compared with filament bulbs, for both varieties being tested. The lowest flower sprout occurrence was associated to the discharge technology with the exception of the variety Stateman produced with incandescent bulbs of 100 W in the winter plot. The unique exception related to discharge technology was associated to the White 23W Integrated Compact Fluorescent bulb yielding 2.4% of flower sprouts compared with 0% of other bulb types associated to the production of the variety Euro Speedy. It was noticed from the results that the yellow integrated compact fluorescent bulbs (23W) exhibited lower maximum demand as well as an average energy consumption of 75.51% when compared to incandescent filament bulb type (100W) which is currently employed by the chrysanthemum growers. Keywords: artificial illumination, chrysanthemum, electric power rational use


electric power conservation chrysanthemums estufa (plantas) electric power consumption energia eletrica - consumo crisantemo energia eletrica - conservação chrysanthemums crisantemo - iluminação forcing (plants)

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