...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Environmental Science and Technology >Environmental impact assessments of heat pump-gas fired water heater hybrid system for space heating application
【24h】

Environmental impact assessments of heat pump-gas fired water heater hybrid system for space heating application

机译：热泵 - 气体燃烧热水器混合系统的环境影响评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hybrid systems combining heat pump and gas heater can demonstrate the economic benefits, while their environmental performance is rarely investigated. In this paper, a comprehensive environmental performance investigation has been conducted to reveal the potential for emission reductions. A new environmental impact methodology has been built, and various influencing factors are evaluated. In respect of the climates, the hourly energy consumption emission first increases and then declines, which is the result of multiple effects from the weighting factors of fuel source emissions and each heating sector's performance. Under the operation condition map for the current study, the effects of the target (final) water temperatures, electricity generation emission factor reduction, and price ratios are revealed to be the top 3 heaviest fluctuations for emissions for hourly system operation energy consumption, followed by each heating sector's efficiency enhancements. The environmental impacts due to hourly system operation do not closely follow the hourly energy consumption profile for the effect of climate conditions and can be quite opposite when considering the effect of fuel source price ratios. In addition, the lifetime environmental performance has been examined for typical cities in China. In the cold region, such as Shenyang, the emission due to the natural gas contributor shares more than 46% of the total emissions. For warm cities (Shanghai, Wuhan, and Chengdu), the emission of the natural gas is only responsible for 9% or even less of the total emissions. A switch from R410A (GWP(100):1924) to R452B (GWP(100):675) can also lead to 11% emission total reductions for city of Shanghai, Wuhan, and Chengdu. It is anticipated that the viewpoints and insights from this study can be beneficial for the engineers, policymakers, scholars, public, and manufactures to maintaining the maximum sustainability and economic benefits.
机译：混合系统结合热泵和气体加热器可以展示经济效益，而他们的环境性能很少被调查。在本文中，已经进行了全面的环境绩效调查，以揭示减排潜力。建立了一种新的环境影响方法，并评估各种影响因素。关于气候的，每小时能量消耗发射首先增加，然后下降，这是燃料源排放的加权因素和每个加热部门的性能的多种效应的结果。在目前研究的操作条件图下，目标（最终）水温，发电排放因子减少和价格比的影响是为每小时系统运营能耗排放的前3个最重的波动，其次是每种供暖部门的效率增强。由于每小时系统运行导致的环境影响不会密切关注气候条件的效果的每小时能耗型材，并且在考虑燃料源价格比的效果时可以相反。此外，中国典型城市研究了寿命环境绩效。在沉阳等寒冷地区，天然气贡献者的发射占总排放量的46％以上。对于温暖的城市（上海，武汉和成都），天然气的排放仅负责9％甚至更少的排放量。来自R410A的交换机（GWP（100）：1924）至R452B（GWP（100）：675）也可以导致上海，武汉市和成都市的11％排放总减少。预计这项研究的观点和见解可能对工程师，政策制定者，学者，公众以及制造业，以维持最大的可持续性和经济效益。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号