INFLUENCE OF STRUCTURAL FEATURES AND PLANT GROWTH ON TEMPERATURES IN GREENHOUSE STRUCTURE WITH PARTICULAR EMPHASISON PLASTIC GLAZED STRUCTURES
To illustrate the usefulness of this relationship and to point out the significance of various structural and/or equipment changes, the relationship was applied to typical greenhouse situations. In particular the influence of multiple glazings and thermal radiation transmittance of the glazing material on the heat requirement of greenhouses was determined. For summer conditions the influence of air exchange rate, evapo-transpiration rate, solar transmittance of the glazing material, multiple glazing, and thermal radiation transmittance was evaluated. Of these the effect of multiple glazings in the winter and air exchange and evapotranspiration rate in the summer were most significant.