ISHS Acta Horticulturae 578: International Symposium on Design and Environmental Control of Tropical and Subtropical Greenhouses
COOLING METHODS FOR GREENHOUSES IN TROPICAL REGION |
| Authors: | Y. Shen, S.L. Yu |
| Keywords: | heat stress, near-infrared, temperature, solar, modeling, simulation. |
| Abstract:
With the objective to identify the best cooling method for greenhouses in tropical region, the effects of several cooling methods on leaf temperature reduction were simulated by using a greenhouse climate model in conjunction with a leaf temperature model. The results indicated that the cooling system, which consists of ventilation fans with covering materials having near-infrared reflection capability, is the best cooling methods among others. This cooling method has advantages such as heat load are lowered by reducing the near-infrared portion of incident solar energy, excessively high humid conditions are avoided, undue loss of photosynthetic active radiation is minimal, and light quality may also be controlled by selecting the color of covering materials. | |
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