ISHS Acta Horticulturae 559: V International Symposium on Protected Cultivation in Mild Winter Climates: Current Trends for Suistainable Technologies
AIR INFILTRATION RATE OF ALMERIA "PARRAL¿TYPE" GREENHOUSES |
| Authors: | J.C. López, J. Pérez, J.I. Montero, A. Antón |
| Keywords: | greenhouse, infiltration rate, tracer gas and leakage |
| Abstract:
The tracer gas technique was used for the measurement of the infiltration rate of ‘parral-greenhouses’ as function of the external wind speed, and showed the lack of tightness greenhouse, specially under windy conditions. The infiltration rate for low wind speed ( lower than 2 m s-1) was nearly 1,3 volumes per hour, while for a wind speed of 7 m s-1 the infiltration rate was as high as 6 volumes per hour. The consequence is a loss of efficiency of heating or CO2 enrichment under these structures. | |
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