ISHS Acta Horticulturae 691: International Conference on Sustainable Greenhouse Systems - Greensys2004
COMPARATIVE TESTS AND MODELLING OF HUMIDITY CONTROL STRATEGIES IN MEDITERRANEAN GREENHOUSES PLACED IN CONTINENTAL AND COASTAL SITES |
| Authors: | A. Perdigones, J.L. Garcia, L. Luna, J.I. Montero, P. Muñoz |
| Keywords: | climate, heating, ventilation, condensation, air humidity |
| Abstract:
Comparative tests for humidity modelling were carried out in Mediterranean greenhouses placed in Spain, in Madrid (continental climate) and Cabrils, Barcelona (coastal climate). Small roof window apertures reduced significantly the measured values of inside relative humidity without significant increases of energy consumption. A simplified climate model with four terms of energy exchange (heating, insolation, losses through structure and losses through windows) and four terms of mass exchange (transpiration, evaporation from soil, losses through structure and losses through windows) was adjusted; it allowed the simulation of inside relative humidity with errors lower than 5% in both locations. | |
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