판형 열교환기에서 에틸렐글리콜 수용액의 열전달 및 압력강하 특성에 관한 실험적 연구

• Published in: 설비공학 논문집, 30(8) Vol. 30; no. 8; pp. 358 - 365
• Main Authors: 정현준(Hyun Joon Chung), 강훈(Hoon Kang), 김용찬(Yongchan Kim), 이광진(Kwangjin Lee), 이동균(Dongkyun Lee), 이원희(Wonhee Lee), 신완순(Wan-Soon Shine)
• Format: Journal Article
• Language: Korean
• Published: 대한설비공학회 2018
• Subjects: 기계공학; Ethylene-glycol water(에틸렌 글리콜 수용액); Plate heat exchanger(판형 열교환기); Pressure drop(압력강하); Heat transfer(열전달)
• ISSN: 1229-6422; 2465-7611
• DOI: 10.6110/KJACR.2018.30.8.358

Having desirable thermal characteristics, such as a low freezing point, a high boiling point, better stability over a wide range of temperatures, and good thermophysical properties, ethylene-glycol water is a very popular antifreeze and heat-transfer fluid in numerous commercial and industrial applications. In this study, the heat-transfer and pressure-drop characteristics of a brazed-plate heat exchanger were investigated experimentally using ethylene-glycol water and R410a as the two fluids in a plate heat exchanger. The heat-transfer rate and pressure drop of the ethylene-glycol water were measured by changing inlet temperature, volumetric flow rate, and composition. The inlet temperature, volumetric flow rate, and composition were varied from 12.0 to $30.0^{\circ}C$, 4.9 to 26.8 lpm, and 30 to 55 percent, respectively. In addition, correlations were proposed to predict the heat-transfer coefficient and friction factor.