Prediction of Hedonics Evaluation of Mixed Odors in Masking Effect

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04820
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23020:Architectural environment and building equipment-related
• Research Institution: Setsunan University
• Principal Investigator: Takemura Akihisa 摂南大学, 理工学部, 准教授 (70584689)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 臭気 / マスキング / 設計資料

Outline of Final Research Achievements

Malodor control methods using ventilation are against energy conservation. However, masking, which requires only the addition of fragrance, is compatible with energy conservation. On the other hand, it was difficult to design odor control measures because sensory evaluations of mixed odors were currently unpredictable. The relationship between the difference of discomfort between the malodor and the mixed odor and the difference of intensity between the malodor and the masking odor was proposed in this study. The validity of the relationship was examined by multiple case studies. As a result, it was shown that the correlation was high if it was a mixture of clear malodor and clear fragrance, and the possibility of this relationship being effectively utilized in the future was shown.

Free Research Field

建築環境工学

Academic Significance and Societal Importance of the Research Achievements

臭気の混合後の心理評価は予測しにくいと考えられてきた。混合する臭気の種類が限定されるものの、提案した関係を用いることで、期待する悪臭の不快度改善度合いと現状の悪臭強度から、マスキングで付加する香りの強度を求めることができる。マスキングは予測のしにくさから設計が困難だったが、今後は提案手法によって意図したマスキング効果を得やすくなり、悪臭対策がより簡便かつ省エネルギーと両立可能となる。