Whole life cost performance of domestic rainwater harvesting systems in the United Kingdom
Whole life cost performance of domestic rainwater harvesting systems in the United Kingdom
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DOI：
10.1111/j.1747-6593.2010.00230.x
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发表时间：
2011-09-01
影响因子：
2
通讯作者：
Tait, S.
中科院分区：
文献类型：
--
作者：
Roebuck, R. M.;Oltean-Dumbrava, C.;Tait, S.
雨水收集 (RWH) 可用于减少对饮用水的需求。在单体建筑尺度上，以往的研究主要集中在节水潜力上，而财务评估要么被省略，要么临时考虑。本文报告了对国内 RWH 系统进行比以前更严格的财务分析的应用。选择终身成本法作为最合适的财务评估技术。考虑到各种利益相关者的观点和未来的成本情景，每天对 3840 个国内系统配置进行评估。在每种情况下，我们发现收集雨水的成本效益明显低于仅依靠自来水的成本效益。国内 RWH 系统通常造成的财务损失大约等于其资本成本。如果没有大量的财政支持，国内 RWH 不太可能在所有合理可预见的情况下都具有成本效益。
Rainwater harvesting (RWH) can be used to reduce the demand for potable mains water. At the single-building scale, previous research has focused on water-saving potential, while financial assessment has either been omitted or considered in an ad hoc manner. This paper reports on the application of a more rigorous financial analysis of domestic RWH systems than had been conducted previously. Whole life costing was selected as the most appropriate financial assessment technique. A total of 3840 domestic system configurations were assessed at a daily time step, taking into account various stakeholder perspectives and future cost scenarios. In each case, it was found that harvesting rainwater was significantly less cost effective than relying solely on mains-only water. The domestic RWH systems generally resulted in financial losses approximately equal to their capital costs. Without significant financial support, domestic RWH is unlikely to be cost effective for all reasonably foreseeable scenarios.