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Systematic Mapping Study on the Feasibility of Rainwater Harvesting Systems

机译：雨水收集系统可行性的系统制图研究

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Introduction and aims: With water scarcity, rainwater harvesting systems are increasingly used as an alternative source of water supply.However, its implantation often is not financially feasible.The feasibility analysis of such investments is made by traditional techniques based on discounted cash flow methods but these methods do not consider the managerial flexibility and have limitations on the uncertainties arising from variation in rainfall and in the readjustment of the water rates.Thus the objective of this study is to investigate the methods used to establish the feasibility of rainwater harvesting systems, identifying the trends of current researches.Method: It was performed a Systematic Mapping Study, an evidence-based paradigm tool.Initially the research strings have been defined, then it was made a search of articles in databases Engineering Village, Scielo, Scopus and Web of Science.The relevant articles were selected and,finally, an analysis of bibliometric datas was conducted.Results and conclusion: The majority of the studies was performed in the last ten years and it was verified that to determinate the rainwater harvesting systems feasibility, frequently it was used discounted cash flow methods such as net present value, internal rate of return and payback.Some articles seek to incorporate uncertainties with an analysis of sensitivity and only one study uses the real options analysis to define the investment feasibility.Contributions: The Systematic Mapping Study provided a viewing of current literature and contributed to the identification of areas for future studies.
机译：引言和目的：由于水资源短缺，雨水收集系统越来越多地用作替代水源，但是，其注入通常在财务上不可行，这种投资的可行性分析是基于现金流量折现法的传统技术进行的，但这些方法没有考虑管理的灵活性，并且限制了因降雨变化和水价调整而产生的不确定性。因此，本研究的目的是研究用于建立雨水收集系统可行性的方法，方法：进行了系统的制图研究，这是一个基于证据的范式工具。最初定义了研究字符串，然后搜索了Engineering Village，Scielo，Scopus和Web of Web数据库中的文章。科学。选择了相关文章，最后对文献计量数据进行了分析结果与结论：大多数研究是在过去十年中进行的，已证实为了确定雨水收集系统的可行性，经常使用折现现金流量法，例如净现值，内部收益率和一些文章试图将不确定性与敏感性分析结合起来，只有一项研究使用实物期权分析来定义投资可行性。贡献：系统制图研究提供了对当前文献的看法，并有助于确定未来研究的领域。

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