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2007, vol. 33, iss. 3-4, pp. 179-186
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Energy consumption for different greenhouse structures
Potrošnja energije u objektima zaštićenog prostora
University of Belgrade, Faculty of Agriculture, Department of Agricultural Engineering, Serbia
Abstract
In this paper influence of greenhouse structure was estimated for four different double plastic covered greenhouses in winter lettuce production. Plastic coverings are introduced as mean of making this kind of plant production more efficient. Also, as a mean of lowering energy consumption, tunnel structures are proposed. Four different double plastic covered greenhouses were used for energy analysis. Two tunnel types, 9 x 58 m and 8 x 25 m covered with double PE folia, and two gutter connected plastic covered greenhouses. Results show lowest energy consumption for gutter connected greenhouses. Energy out/in ratio was also higher in gutter connected greenhouse. Highest energy consumption was obtained in tunnel greenhouse 8 x 25 m.
Sažetak
U radu je prikazan uticaj oblika konstrukcije plastenika na potrošnju energije i energetsku efikasnost proizvodnje salate u zimskom periodu. Plastični pokrivni materijali su široko primenjeni u kombinaciji sa polukružnim konstrukcijama, kao ekonomski prihvatljivija varijanta. Potrošnja energije i energetska efikasnost analizirani su za četiri tipa konstrukcije objekta i to dva tunela 9 x 58 m i 8 x 25 m, i dva blok objekta 14 x 39 m i 128 x 42 m, pokriveni dvostrukom folijom. Rezultati pokazuju najniži utrošak energije za blok objekte i najvišu vrednost energetske efikasnosti. Najviša specifična potrošnja energije zabeležena je u objektu tunel tipa 8 x 25 m.
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