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지역난방 공동주택 2차측 난방순환펌프의 말단동 변속제어에 대한 실증 연구
조용기(Yongki Joe),허병준(Byeongjoon Heo),권정태(Jeong-Tae Kwon),이근휘(Keunhui Lee),유호선(Hoseon Yoo),임신영(Shinyoung Im),홍영기(Youngki Hong) 대한설비공학회 2015 대한설비공학회 학술발표대회논문집 Vol.2015 No.11
Recently, due to the construction of the metropolitan area and spread of new towns, application of district heating system has been increased. Since installation of facility for secondary user is usually being performed by construction companies or contractors, the systematic and efficient operation of user facility has not yet been set up. In this study, therefore, the effect of the speed control of the inverter on the heating and energy saving was investigated by using existing facilities. A variable speed control using differential pressure at the farthest building of heating system was applied to experimental field. From the experimental results, it was concluded that by using the variable speed control with smaller △p setting(0.6bar), the power consumption was drastically reduced by up to 73%. Therefore, the variable speed control using the differential pressure at the farthest building is recommendable, and a heating by variable speed control using the required appropriate minimum differential pressure was available.
냉각탑 습건식부의 댐퍼 개폐에 따른 열성능 변화에 대한 실험적 연구
구태준(TaeJun Gu),전종환(Jonghwan Jeon),조용기(Yongki Joe) 대한설비공학회 2017 대한설비공학회 학술발표대회논문집 Vol.2017 No.6
The plume, which is created from the cooling towers, is the water vapor generated by the heat exchange between the industrial water and the outside air. And as the temperature lowers, the air contains lesser amount of vapor, as a result, the plume becomes more visible. Majority ordinary people however, have negative impression on the plume and consider it as the pollutant because plume come from the factories or power plants . Likewise, the importance of developing an effective plume reduction apparatus is increasing and many researches have been conducting the studies. The Effective reduction of plume is being studied continuously and currently, the most widely used plume reduction method is a series heating method using a fin-coil. However, there are problems such as big volume, high cost, corrosion, in-pipe scale, and the like. To solve this problem, a parallel heating type cooling tower equipped with a plastic air heater has been emerging as a solution and in this research, an experimental study has been demonstrated through attaching a damper to the cooling tower inlet, which improves performance of the cooling tower.