PREFABRICATED GREENHOUSES FOR USE IN DRY CLIMATES

摘要

A greenhouse has a series of ventilation ducts (U) which pass out through its roof to allow for a gas exchange between the greenhouse air and outside atmosphere. Each duct contains a mat or filter made from silicone or high-modular polyethylene fibres coated with silicone resin, which retain moisture droplets in the air and return them to the greenhouse. The ducts can be equipped with grilles to keep out insects and other pests. The greenhouse preferably employs steam from car radiators or nuclear power plants