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http://dx.doi.org/10.3795/KSME-B.2007.31.6.499

A Study on Chemical Washing Mechanism by Flowing Film of Detergent/Water Solution  

Jang, Choong-Hyo (한국과학기술원 대학원 기계공학과)
Park, Chan-Youl (동양매직㈜ 가전연구소)
Song, Tae-Ho (한국과학기술원 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.31, no.6, 2007 , pp. 499-506 More about this Journal
Abstract
This study aims to propose evaluation methods of chemical washing performance and estimate the washing capability by flowing detergent/water solution for application to home appliances such as dishwashers. Standard pollutant is stearic acid. A numerical study is also tried using a SIMPLER code. Preliminary experiments are performed by varying the concentration and temperature of the solution. From the pre-experiments, 10 minute pre-curing time is found to be necessary to remove the stearic acid. Stoichiometric ratio and detergent consumption coefficient of reaction between the detergent and stearic are estimated following a proposed method. Washing experiments of pollutant to compare with the numerical results are performed. The relative errors between the experimental and the numerical results with pre-curing time included are less than 7%. In conclusion, important mechanisms of chemical washing are revealed and methods of predicting washing performance are well established.
Keywords
Chemical Washing; Detergent/Water Soultion; Stearic Acid; Detergent Consumption Coefficient; Flowing Film;
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