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首页> 外文会议>2004 CIGR International Conference : Collection of Extent Abstracts >Ventilation Rate And Emission Streams Of NaturallyVentilated Cattle Barns
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Ventilation Rate And Emission Streams Of NaturallyVentilated Cattle Barns

机译：自然通风牛舍的通风率和排放流

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The Keeping of animals in livestock buildings requires the ventilation of these buildings.On the one hand good climatic conditions for the animals in the livestock building have to beprovided but on the other hand the emissions have to be kept at a low level. The airflow through thelivestock building plays an important role for both opposing requirements. The targeted control of theclimate in the livestock building and for the minimization of emissions calls for knowledge aboutairflow and emission streams. Especially for naturally ventilated buildings, the determination of airchange rates leads to a few problems. For those cases, the Institute of Agricultural EngineeringBornim has developed a 40-sampling-points system, which is using Krypton 85 as tracer gas. All 40points are running simultaneously with a maximum sampling rate of one second. Air change rates ofup to 1000 h-1 have been measured. During the last years, more than 30 naturally ventilated cattlebarns have been investigated. Apart from the measurement of volume flow also the concentration ofgases and odours has been measured well. In parallel to these investigations inside the barns, theclimatic conditions outside have also been recorded. The results are extensive data on emissions.The measured emission flows of odours can be used – among other things – to calculate theminimum distance between livestock buildings and human living areas.
机译：将动物饲养在牲畜建筑物中需要对这些建筑物进行通风。 一方面，必须为牲畜舍中的动物提供良好的气候条件 提供，但是另一方面，排放必须保持在低水平。气流通过 畜牧业在这两个相反的要求中都起着重要的作用。有针对性的控制 畜牧建筑中的气候变化和排放的最小化需要有关以下方面的知识 气流和排放流。特别是对于自然通风的建筑物，空气的测定 变化率会导致一些问题。对于这些情况，农业工程研究所 Bornim开发了一个40个采样点的系统，该系统使用K 85作为示踪气体。共有40个 点以最大一秒的采样率同时运行。换气率 高达1000 h-1已被测量。在过去的几年中，超过30头自然通风的牛 谷仓已经过调查。除了测量体积流量外，还需要测量 气体和气味已被很好地测量。在谷仓内部进行这些调查的同时， 还记录了外面的气候条件。结果是关于排放的大量数据。 测得的气味排放流量可用于（除其他外）计算污染物的排放量。 牲畜建筑物与人类居住区之间的最小距离。

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