In Line Hydropower Harnessing Device (IHHD)
The underground water distribution network is vulnerable to water loss and pipe burst due to aging pipelines and ongoing changes in soil conditions. In order to early detect potential pipe burst, a number of pressure and flow sensors are installed along the distribution network in order to monitor for abnormal changes in the pressure or flow rates which may indicate a potential burst.
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Since underground power lines cannot provide electricity directly to the underground sensors and meters, batteries is the primary source of energy. The disadvantage of using battery is its short life span along with high demand of labour required to change the batteries housed in underground chambers.
Left: In Line Hydropower Harnessing Device (IHHD), Right: Installation within Underground Chamber
Our IHHD with patented technology effectively makes use of water flow within pipelines to store and supply electricity to underground instruments. The unique design allows for bi-directional waterflow within the pipeline and can operate under low flow conditions (as low as 1.5m/s water velocity). The impeller design reduces water friction / obstruction and can efficiently store power that can supply electricity for sensors over several weeks.
This technology has proven to work and have been installed by Water Supplies Department of Hong Kong throughout its distribution network.