Evaluation of wood pellet application for residential heating in British Columbia based on a streamlined life cycle analysis
Evaluation of wood pellet application for residential heating in British Columbia based on a streamlined life cycle analysis
复制标题
DOI：
10.1016/j.biombioe.2012.11.009
复制
发表时间：
2013-02-01
影响因子：
6
通讯作者：
Sokhansanj, Shahab
中科院分区：
文献类型：
--
作者：
Pa, Ann;Bi, X. T.;Sokhansanj, Shahab
在加拿大不列颠哥伦比亚省，基于简化的生命周期分析，研究了使用木球取代传统柴火用于住宅供暖的后果。2002年和2005年的调查数据表明，不列颠哥伦比亚省每年居民采暖用柴1.44亿吨。如果用木质颗粒取暖设备替代现有的木质采暖设备，则每年只需要667kt木质颗粒，对人类健康、生态系统质量、气候变化和一次能源消耗的影响将分别减少95%、26%、17%和34%。每年还可以节省749,277,000美元的外部性，比目前的做法略微减少了94%。每燃烧一吨球团来替代木柴，就可以避免1124美元的外部性。在新设备的资本投资方面，无论是使用散装球团还是袋装球团，更换常规壁炉、砖石加热器和室外锅炉都是可取的。如果要使用散装颗粒，则除任何类型壁炉嵌件的所有者外，所有用户都应考虑改用木质颗粒。对于净现值(NPV)为负的设备和球团类型组合，估计的外部成本节约和计算的NPV可以作为建立激励计划的基础。通过引入政府补贴和改善分销物流来促进住宅取暖的颗粒消费，将有利于颗粒生产商和当地消费者，也有利于当地的环境。(C)2012爱思唯尔有限公司。保留所有权利。
The consequences of using wood pellets to replace traditional firewood for residential heating in British Columbia, Canada have been investigated based on a streamlined life cycle analysis. Survey data in 2002 and 2005 indicated that 1.44 Mt of firewood is used in BC residential heating annually. If current wood-burning residential heating equipments were replaced by their pellet-equivalent counterparts, then only 667 kt of wood pellets would be needed annually and the impacts on human health, ecosystem quality, climate change, and primary energy consumption will be reduced fractionally by 95%, 26%, 17% and 34%, respectively. Savings of $749,277,000 per year in externality can also be achieved, representing a fractional reduction of 94% from the current practice. For every tonne of pellet burnt to replace firewood, $1124 in externality is avoided. In terms of capital investment for new equipment, replacing conventional fireplace, masonry heater and outdoor boiler are desirable whether bulk or bagged pellets are to be used. If bulk pellets are to be utilized then all users except the owners of any type of fireplace inserts should consider switching to wood pellets. For the equipment and pellet type combinations with negative net present value (NPV), the estimated external cost savings and the NPV calculated may be the basis for the establishment of an incentive program. Promoting pellet consumption for residential heating through introducing government subsidies and improving distribution logistics will be beneficial to both pellet producers and local consumers, as well as to the local environment. (C) 2012 Elsevier Ltd. All rights reserved.