온돌 파이프라인 관리를 위한 초음파 캐비테이션 효과에 대한 실험적 분석 = An Experimental Analysis of Ultrasonic Cavitation Effect on Ondol Pipeline Management

다국어 초록 (Multilingual Abstract)

In the context of Korean residential heating systems, Ondol pipelines are a prevalent choice. However,the maintenance of these pipelines becomes a complex task once they are embedded within concretestructures. As time progresses, the accumulation of sludge, corrosive oxides, and microorganisms onthe inner surfaces of these pipelines diminishes their heating efficiency. In extreme scenarios, thisaccumulation can induce corrosion and scale formation, compromising the system’s integrity.
Consequently, this research introduces an ultrasonic generation system tailored for the upkeep ofOndol pipelines, with the objective of empirically assessing its practicality. This investigationdelineates three variants of ultrasonic generating apparatuses: those employing surface vibration,external generation, and internal generation techniques. To emulate the presence of contaminantswithin the pipelines, substances in powder, slurry, and liquid forms were employed. The efficacy of thecleaning process post-ultrasonic wave application was scrutinized over time, with image analysismethodologies being utilized to evaluate the outcomes. The findings indicate that ultrasonic waves,whether generated externally or internally, exert a beneficial effect on the cleanliness of the pipelines.
Given the inherent characteristics of Ondol pipelines, external generation proves impractical, therebyrendering internal generation a more viable solution for pipeline maintenance. It is anticipated thatfuture endeavors will pave the way for innovative maintenance strategies for Ondol pipelines,particularly through the advancement of internal generation technologies for pipeline applications.