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판형열교환기의 운전변수 및 설계변수에 따른 난방 성능 특성에 관한 연구
전재명(Jaemyeong Jeon),이응찬(Eungchan Lee),강훈(Hoon Kang),김용찬(Yongchan Kim) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.11
District heating systems are widely used due to high-efficiency and eco-friendly. A plate heat exchanger is suitable for district heating systems. Even though studies on the plate heat exchangers have been performed by many researchers, the effects of the operation and geometric parameters on the performance of district heating are very limited in open literature. In this study, the effects of the geometric and operation parameters on the heat transfer and pressure drop characteristics of plate heat exchangers were investigated experimentally by varying the chevron angle, hot and cold side flow rate, and inlet temperature. As a result, chevron angle 60˚/60˚ represented the highest pressure drop and heat transfer coefficient. The heat transfer performance increased with increasing the hot side flow rate and inlet temperature.
판형열교환기의 운전 및 설계변수에 따른 파울링 특성에 관한 연구
전재명(Jaemyeong Jeon),이응찬(Eungchan Lee),강훈(Hoon Kang),김용찬(Yongchan Kim) 대한설비공학회 2014 설비공학 논문집 Vol.26 No.4
The plate heat exchanger has been widely used in water heating systems due to high efficiency, simple structure, and easy maintenance. However, the studies on the effects of fouling on the heat transfer performance under various operation and maintenance conditions are very limited in the open literature. The objective of this study is to investigate the effects of fouling with calcium carbonate (CaCO3) on the heat transfer characteristics of the plate heat exchanger under various operating and geometric conditions. The heat transfer coefficient and pressure drop in the plate heat exchangers were measured under accelerated fouling conditions with CaCO3 by varying geometric and operational parameters. The fouling resistance increased with the decrease in the flow rate, and the increase in the chevron angle and the concentration.