燃气与电气:加热系统燃料来源对低能耗单户住宅可持续性表现的影响
Eric O'Rear1, David Webb1, Joshua Kneifel1
1National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
概括
选择合适的加热燃料对于可持续的家庭至关重要. 天然气对低能耗建筑具有成本效益,而电加热有助于实现净零目标,尽管环境影响更大.
科学领域:
- 建筑科学 建筑科学
- 可持续能源 可持续能源
- 环境工程 环境工程
背景情况:
- 越来越多的人对经济高效,低能耗的住宅建筑越来越感兴趣.
- 在低能耗设计中对加热燃料对可持续性的影响进行了有限的研究.
- 空间和水温占住宅能源使用的很大一部分.
研究的目的:
- 分析供暖燃料选择对住宅建筑可持续性表现的影响.
- 为了比较马里兰州的低能耗和净零能耗住宅建筑设计.
- 评估不同类型的供暖燃料的经济和环境权衡.
主要方法:
- 使用了来自BIRDS v4.0住宅建筑增量能效数据库的数据.
- 进行了一项案例研究,比较不同类型的燃料来源.
- 专注于马里兰州的住宅建筑设计.
主要成果:
- 低天然气价格激励天然气供暖,而生命周期成本最小化是首要任务.
- 电热设备在实现净零能源目标方面表现出更好的经济性能.
- 与天然气相比,电热系统可能会产生更大的环境影响.
结论:
- 供暖燃料的选择对低能耗和净零住宅建筑的经济可行性和环境足迹都有重大影响.
- 最佳的燃料选择取决于主要目标是尽量减少生命周期成本还是实现净零能源性能.
- 需要进一步的研究来平衡可持续建筑设计中的经济和环境考虑因素.
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