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김민준(Min-Jun Kim),김종하(Joung-Ha Kim),윤재호(Jae-Ho Yun),박일환(Il-Hwan Park),조형석(Hyoug-Seok Cho),안성국(Seong-Kuk An) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
In this study, Ice slurry generator heat transfer characteristics are experimentally investigated for the ice slurry generating system with scraper which is pneumatically operated. The ice slurry generator has the same shape as the vertical double tube type heat exchanger. Refrigerant is flowing in the outside tube and ethylene glycol solution in the inside tube. Refrigerant and solution water are parallel flow type which entering bottom of generator and leaving top of generator. The experimentations are conducted under the various test conditions such as compressor speed and cooling water temperature. For the above experimental conditions, heat transfer characteristics of the ice slurry generating system are evaluated in terms of the overall heat transfer coefficient and the heat transfer rate. And the experimental results show that the heat transfer rate of the system is increased as the compressor speed increases and the cooling water temperature decreases.
김종하(Joung-Ha Kim),윤재호(Jae-Ho Yun),김민준(Min-Jun Kim),김규진(Kyu-Jin Kim),조형석(Hyoug-Seok Cho),안성국(Seong-Kuk An) 대한설비공학회 2006 대한설비공학회 학술발표대회논문집 Vol.2006 No.6
In this study, ice making characteristics are experimentally investigated for the ice slurry generating system which is pneumatically operated. The experimentations are conducted under the various test conditions such as chilled water inlet temperature, aqueous solution concentration, flow rate of cooling water, scraper pitch and frequency of cylinder stroke. For the above experimental conditions, ice making characteristics of the slurry ice generating system are evaluated in terms of the overall heat transfer coefficient, heat transfer rate and the amount of slurry ice generation. And the experimental results show that the heat transfer rate of the system increases as the flow rate of cooling water solution increases and the concentration of ethylene glycol and inlet temperature of chilled water decreases.