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对１个实验动物饲养区（５间饲养室，共２１５ｍ２）进行了改建。利用原有空调系统保证新风量，送风口加装中效滤袋，排风口加装初过滤，各室进行净化装修。用风机送入室内的新风及循环风，在夹层内用窗式空调器制冷或制热后，经管道式风口过滤，再进入室内。改建后各饲养室春秋季运行仅增加２４０Ｗ电机功率，节能又经济，整个饲养区能达到清洁级亚屏障系统标准。
A laboratory animal breeding area (5 breeding rooms, a total of 215m2) were rebuilt. The use of the original air-conditioning system to ensure that the new air volume, the air supply installation of medium-efficiency filter bag, exhaust filter installed at the beginning, the room for purification decoration. With the fan into the room of fresh air and circulation of wind, in the mezzanine with window air conditioner cooling or heating, filtered by the duct-type outlet, and then into the room. After rebuilding, all the breeding rooms will only increase 240W motor power in spring and autumn, saving energy and economy, and the entire feeding area can reach the standard of clean-level sub-barrier system.