The Direct Energy Demand of Internet Data Flows
The Direct Energy Demand of Internet Data Flows
复制标题
DOI：
10.1111/jiec.12048
复制
发表时间：
2013-10
影响因子：
5.9
通讯作者：
Vlad C. Coroamă;L. Hilty;Ernst Heiri;Frank Horn
中科院分区：
文献类型：
--
作者：
Vlad C. Coroamă;L. Hilty;Ernst Heiri;Frank Horn
可以使用各种方法(自上而下、自下而上或基于混合/模型)和不同的系统边界定义来评估互联网数据流的直接能源需求。由于这种多样性，文献中报道的结果相差两个数量级，很难进行比较。我们提出了第一个评估，它使用纯粹的自下而上方法和只包括传输设备的系统边界。这项评估是基于对瑞士和日本之间每秒40兆比特的视频会议传输的案例研究，得出2009年每传输千兆字节消耗0.2千瓦时，这一结果支持现有估计数中的最低值。我们讨论了我们的发现的实际意义。
The direct energy demand of Internet data flows can be assessed using a variety of methodological approaches (top‐down, bottom‐up, or hybrid/model based) and different definitions of system boundaries. Because of this diversity, results reported in the literature differ by up to two orders of magnitude and are difficult to compare. We present a first assessment that uses a pure bottom‐up approach and a system boundary that includes only transmission equipment. The assessment is based on the case study of a 40 megabit per second videoconferencing transmission between Switzerland and Japan, yielding a consumption of 0.2 kilowatt‐hours per transmitted gigabyte for 2009, a result that supports the lowest of the existing estimates. We discuss the practical implications of our findings.