Construction and Operation of a Ventilated Hood System for Measuring Greenhouse Gas and Volatile Organic Compound Emissions from Cattle
Construction and Operation of a Ventilated Hood System for Measuring Greenhouse Gas and Volatile Organic Compound Emissions from Cattle
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DOI：
10.3390/ani1040433
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发表时间：
2011-12-01
期刊：
影响因子：
3
通讯作者：
Mitloehner, Frank M.
中科院分区：
文献类型：
--
作者：
Place, Sara E.;Pan, Yuee;Mitloehner, Frank M.
简单总结：我们描述了一个独特的系统，用于测量产生的瘤胃和牛的新陈代谢的气体排放量的建设和操作。该系统可收集高质量的数据，用于改进区域和国家一级的排放清单。此外，该系统可用于测试各种减排techniques.翻译后摘要：最近的兴趣，反刍动物，如牛的温室气体排放量，已经催生了一个负担得起的，精确的，准确的方法来测量所产生的气体排放量肠发酵的需要。加州大学戴维斯分校最近开发了一种新的用于捕获和量化排放的牛头罩系统。该系统由两个头罩、两个真空泵和一个装有所需数据采集设备的仪表柜组成。该系统能够实时测量二氧化碳、甲烷、乙醇、甲醇、水蒸气、一氧化二氮、乙酸排放量和耗氧量。一个独特的方面是罩的前面，后面和两侧是由明确的聚碳酸酯片材，使牛的全面视野，在气体采样。这些微负压室的回收率测量范围为97.6%至99.3%。该系统可以捕获高质量的数据，用于改进排放清单和评估气体排放减缓战略。
Simple Summary: We describe the construction and operation of a unique system for measuring gaseous emissions that arise from the rumen and metabolism of cattle. This system allows for the collection of high quality data that can be used to improve emission inventories at the regional and national level. Additionally, the system can be used to test various emission mitigation techniques.Abstract: Recent interest in greenhouse gas emissions from ruminants, such as cattle, has spawned a need for affordable, precise, and accurate methods for the measurement of gaseous emissions arising from enteric fermentation. A new head hood system for cattle designed to capture and quantify emissions was recently developed at the University of California, Davis. The system consists of two head hoods, two vacuum pumps, and an instrumentation cabinet housing the required data collection equipment. This system has the capability of measuring carbon dioxide, methane, ethanol, methanol, water vapor, nitrous oxide, acetic acid emissions and oxygen consumption in real-time. A unique aspect of the hoods is the front, back, and sides are made of clear polycarbonate sheeting allowing the cattle a full range of vision during gas sampling. Recovery rates for these slightly negative pressure chambers were measured ranging from 97.6 to 99.3 percent. This system can capture high quality data for use in improving emission inventories and evaluating gaseous emission mitigation strategies.