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신유식(You-Sik Shin),배강열(Kang-Youl Bae),배철환(Chul-Whan Bea),이윤환(Youn-Hwan Lee),정효민(Hyo-Min Jeong),정한식(Han-Shik Chung) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
This paper is the study on the performance of cooling tower system by using the low vacuum. Currently, the cooling system is using at many parts of the industry. But, the present system have many problems for the cooling process. Thus, This research aimed for replacing the present cooling<br/> tower system. This new cooling tower system have a low vacuum, and have a ejector system to maintain a low pressure. As a main experimental parameter, we introduced a flowrate at the inlet ejector system.
모종근(Joung Gun Mo),신재호(Jae Ho Shin),배철환(Chul Whan Bae),서정세(Jeong Se suh),정한식(Han Shik Chung),정효민(Hyo Min Jeong) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
We was made 150L an water storage electric boiler and obtained various performances of the storage, radiant and keeping by experimentation. The storage performance is that the heat were off about 50 minutes after heating start. Then the temperature of outlet was arrived the stead state at 91°C and the storage performance was appeared 93,64%, In the radiant performance, the water temperature was decreased from 90°C to 44.8 °c after 960 minutes, Then the calorific value changed<br/> from 675kcal/h to 72kcal/h and the temperature decreased about 50%, The keeping performance showed mean temperature, 67,06°C according to progress 800 minutes and the maximum temperature drop were O.Z.C. By the results of the performance valuation, the water storage electric boiler was verified fitted quality on the test prescription of KERI(Korea Electrotechnology Research Institute).