Research On Double Ventilating And New Material Bulk Curing Barn

In the view of the tobacco curing barn development in Hunan tobacco production, using a dual system of ventilation design and new materials heating equipment, design and construct a bulk curing barn of double ventilating new material heating equipment, through2010and2011in Hunan Xiangxi to carry out the experiment, the barn design, performance test and determination of the effect of baking, provide the scientific and experimental basis for the design and to promote the bulk curing barn. The main results are as follows1. By establishing a mathematical model for the design and improvement, to provide quantitative basis, the heat supply system and ventilation system of new material bulk curing barn was calculated, the hothouse hearth volume of not less than0.95cubic meters, radiating tube minimum area is12.31square meters, barn air inlet area of not less than0.23square meters, the air outlet area of not less than0.28square meters, according to the theoretical results for the design of each part can meet the actual needs, improve the efficiency of design.2. Using new inorganic non-metallic materials, improves the heating system stability, durability and heat efficiency, in the roasting process, the flat temperature and vertical temperature difference amplitude changes are small, flat temperature range of0.1to1.6℃, vertical temperature range of0.8to2.4℃, the use of disposable feeding coal technology, reduce the labor strength, greatly improve the heating stability in flue-cured tobacco leaf.3. Double ventilating technology application, improve the barn in power-off mode resistance ability, reduce the risk of blackouts and baking, reduce equipment failure on the baking quality of tobacco leaves, without power for1hours, the baking room temperature changes not exceeding2℃, most regional variation in temperature not exceeding1℃, the baking room small temperature variations than the other type baking room for, in favor of tobacco baking..4. Design and application of smoke dampers and loading carts, improved cigarette loading mode, enhancing loaded and unloaded farmers labor efficiency, reducing the labor intensity.