Benchmarking energy consumption and CO2 emissions from rainwater‐harvesting systems: an improved method by proxy
Benchmarking energy consumption and CO2 emissions from rainwater‐harvesting systems: an improved method by proxy
复制标题
雨水收集系统的能源消耗和二氧化碳排放基准测试：一种改进的代理方法
DOI：
10.1111/j.1747-6593.2011.00279.x
复制
发表时间：
2012
影响因子：
2
通讯作者：
F. Memon
中科院分区：
文献类型：
--
作者：
S. Ward;D. Butler;F. Memon
生命周期分析（LCA）表明，雨水收集（RWH）系统的主要运行能量贡献来自紫外线（UV）消毒和将雨水从水箱泵送到建筑物。估算泵能耗的简单方法不区分泵启动和泵运行能量，也不包括泵效率参数。本文概述了一种改进的方法，将这些参数，间接估计泵的能耗和二氧化碳（CO2）排放量使用系统性能数据。改进的方法被应用到基于办公室的RWH系统的数据。通过比较简单方法和改进方法，发现前者低估了泵的能耗和碳排放量60%。改进后的方法计算结果与实测能耗吻合较好，能耗占某办公楼总能耗的0.07%。因此，与RWH系统相关的总能耗仅占建筑物总能耗的很小一部分。
Life cycle analyses (LCAs) show the main operational energy contribution for rainwater‐harvesting (RWH) systems come from ultraviolet (UV) disinfection and pumping rainwater from tank to building. Simple methods of estimating pump energy consumption do not differentiate between pump start‐up and pump‐operating energy or include pump efficiency parameters. This paper outlines an improved method incorporating these parameters that indirectly estimates pump energy consumption and carbon dioxide (CO2) emissions using system performance data. The improved method is applied to data from an office‐based RWH system. Comparison of the simple and improved methods identified the former underestimates pump energy consumption and carbon emissions by 60%. Results of the improved method corresponded well to directly measured energy consumption and energy consumption represented 0.07% of an office building's total energy consumption. Consequently, the overall energy consumption associated with RWH systems is a very minor fraction of total building energy consumption.