我国自来水压力规定最高不超过0.35MPa,一般供水压力0.07MPa,取0.07MPa。

水中某一深度的压强为P=ρHg,简略计算约为7.1米水柱高。

水力发电能量转换效率一般75%,1立方米水发电1000kg x 9.8m/s x 7.1=0.0193千瓦时

呵呵。


有没有想过:自来水的压力是哪里来的?


所有人都这干,自来水公司供水「压力」好大。


已经有人这么做了。还分析了能量的潜力呢。

Gideon Johannes Bonthuys, Marco van Dijk, Giovanna Cavazzini,

Leveraging water infrastructure asset management for energy recovery and leakage reduction,

Sustainable Cities and Society,

Volume 46,

2019,

101434,

ISSN 2210-6707,

https://doi.org/10.1016/j.scs.2019.101434.

(http://www.sciencedirect.com/science/article/pii/S221067071832081X)

Abstract: The purpose of this paper is to bridge the gap between the awareness of potential for energy recovery within Municipal Water Distribution Systems and the lack of knowledge of the extent and location of such potential so as to increase the sustainability and resilience of South African cities. This is done by leveraging asset management data, contained within municipal infrastructure asset registers and asset management plans, to identify energy recovery and leakage reduction potential. Data from asset registers and customer profiling within the municipal asset management plans were used to develop a hydraulic model for a municipal water distribution system. The customer service charter within the asset management plans describes the level of service, which was used in evaluating minimum operating pressures within the system. Comparing this to a pressure profile from the hydraulic analysis of the model, identifies excess pressure areas, exploitable for energy recovery. The novelty of this research is the exploitation of asset management data from Infrastructure Asset Management Plans and Asset Registers for the development of a hydraulic model to analyse energy recovery and leakage potential within a municipal water distribution system. Asset management data were used to identify an average annual preliminary energy recovery potential within the Polokwane Central District Metered Area of 2.3?GW?h, resulting in an average annual leakage reduction potential between 3.3% and 4.2% of potable water, adding to the asset management value chain.

Keywords: Energy recovery; Leakage reduction; Asset management; Municipal water infrastructure


有一种装水龙头上的灯就是靠自来水发电,淘宝有


本来想说这个问题点进来就输了,然而还想说一下。

自来水发电还是有一些小的使用场景,比如将所发微弱的电用于探测水的温度。其他的用途,应该得不偿失,也没有特别的意义。


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