一种简单的方法来测量室内气体泄漏的甲排放量
Dominic Nicholas1, Robert Ackley2, Nathan G Phillips3
1HEET.org, Boston, MA, United States of America.
PloS one
|November 30, 2023
概括
家庭气体计后面的甲泄漏很常见,导致排放估计的差异. 一种新的室内方法可以检测到这些室内泄漏,在研究的90%的建筑物中发现了它们.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 能源系统 能源系统
背景情况:
- 甲的高全球变暖潜力需要对天然气工艺链排放进行审查.
- 城市地区的自上而下的和自下而上的甲排放估计存在差异.
- 室内天然气泄漏在计量器后是不充分研究的,但可能解释排放差异.
研究的目的:
- 开发和测试一种简单,可部署的方法来量化室内甲排放.
- 为了选大量的 ("超级排放") 室内甲泄漏.
- 收集室内甲排放数据,以减少库存中的不确定性.
主要方法:
- 开发和测试用于室内甲量化的闭室方法.
- 该方法在波士顿大区的20座建筑物中应用.
- 室内甲排放的测量在ft3 CH4 day-1和g CH4 day-1中.
主要成果:
- 在90%的研究建筑物中检测到室内甲泄漏.
- 测量室内甲排放量在0.02-0.51英尺3CH4天-1 (0.4-10.3gCH4天-1) 之间.
- 室内平均甲排放率为0.14英尺3CH4天-1 (2.8克CH4天-1).
结论:
- 开发的室内方法为室内甲排放数据收集提供了可扩展的方法.
- 增加数据可以改善自下而上的排放库存,并识别超级排放室内泄漏.
- 解决室内甲泄漏可能有助于调和上下和自下而上的排放估计.
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