Microclimate simulation model for a double plastic film skin greenhouse

摘要

A mathematical model for the simulation of a double plastic film skin greenhouse microclimate was developed. The model had the weather conditions and the constructive properties of the greenhouse as inputs and the air and soil temperatures, and theair relative humidity inside the greenhouse as outputs. The model was realized using the Fortran language and the results were compared with experimental data obtained with field tests carried out on an experimental double skin plastic greenhouse. The weather conditions, the air and the soil temperature, the relative humidity inside the greenhouse, the temperature of the air gap between the two films were gathered by means of sensors and a data logger. The results obtained by the simulation model showeda good agreement with the experimental measurements, an average error of 1.02degC was obtained for the internal air temperature and lower average errors for the soil temperature at different depths.