台所用節湯型シングルレバー水栓の節湯効果に関する実験的研究: 被験者実験による食器洗浄結果の検討

摘要

In the previous report, the authors pointed out, on the basis of the Web questionnaire results, that hot water wastage and the unnecessary ignition of the gas water heater could be attributed to how the single-lever kitchen faucet was used. This study implements experiments that involve volunteer users and use a water-saving single-lever faucet which has been developed to tackle these issues, with the intention of understanding quantitatively the water-saving effect of the faucet. Here, with reference to the indices proposed for evaluating water-saving effects, the water-saving effect of the aforementioned single-lever faucet is compared to that of a conventional type, for a certain period of time during a summer term, an intermediate term and a winter term, and the effectiveness thereof is indicated accordingly.%既報において台所用途でのシングルレバー水栓の操作に伴う節湯上の課題点を示し、日常の無意識な操作に対しても優先的に節湯を促す節湯型水栓の開発の必要性を指摘した。それを受けて新たに開発された節湯型シングルレバー水栓の節湯効果について、被験者実験を行いその評価法も含めて検討し、初期の検討段階ではあるが、各期における任意に設定した実験期間内の成果として、以下の知見を得た。