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고온 고압용 Welded Compact Heat Exchanger 개발에 관한 연구
박재홍(Jae-Hong Park),임혁(Hyug Lim),김정규(Jung-Kyu Kim),조성열(Sung-Youl Cho),권오붕(Oh Boong Kwon) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
In view of space saving, the design of more compact heat exchangers is relatively important. Also, to meet the demand for saving energy and resources today, manufacturers are trying to enhance efficiency and reduce the size and weight of heat exchangers. Over the past decade, there has been tremendous advancement in the manufacturing technology of high efficiency heat exchangers. This has allowed the use of smaller and high performance heat exchangers. Consequently, the use of smaller and high performance heat exchanger becomes popular in the design of heat exchangers. Welded compact plate heat exchanger is used in high temperature and pressure. In the design of heat exchanger, it is necessary to understand the heat transfer characteristics, so performance data are provided to help design of this type heat exchanger.
양명국(Myeong-Kuk Yang),임혁(Hyug Lim),현용익(Yong-Ik Hyun),박재홍(Jae-Hong Park),조성열(Sung-Youl Cho),김정규(Jung-Kyu Kim),허인은(In-Eun Hur),고성규(Seong-Kyu Ko),손성기(Seong-Ki Son) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
In view of space saving, the design of more compact heat exchangers is relatively important. Also, to meet the demand for saving energy and resources today, manufacturers are trying to enhance efficiency and reduce the size and weight of heat exchangers. Over the past decade, there has been tremendous advancement in the manufacturing technology of high efficiency heat exchangers. This has allowed the use of smaller and high performance heat exchangers. Consequently, the use of smaller and high performance heat exchanger becomes popular in the design of heat exchangers. Welded compact plate heat exchanger is used in high temperature and pressure. In the design of heat exchanger, it is necessary to understand the heat transfer and frictional characteristics, so performance data are provided to help design of this type heat exchanger.
지역냉방 시스템용 초고효율 판형 열교환기 개발에 관한 연구
박재홍(Jae-Hong Park),임혁(Hyug-Lim),조성열(Sung-Youl Cho),강인성(In-Sung Kang),김정규(Jung-Kyu Kim),허인은(In-Eun Hur),고성규(Seong-Kyu Ko),곽승식(Sung-Sik Kwak),김종재(Jong-Jae Kim) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.10
Plate heat exchanger consists of thin, rectangular, pressed sheet metal plates that are sandwiched between full peripheral gaskets and clamped together in a frame. The frame has a fixed end-cover plate, fitted with the connecting ports, which is bolted together with a movable cover plate to hold the embossed plates in between; the top and bottom carrying bars allow proper alignment of the plate stacks. When compared with the well-established shell and tube heat exchangers, the plate heat exchanger shows a lot of advantages like high NTU values, compactness, low cost, multi duties and reduced fouling etc. Plate heat exchangers are often used to transfer heating or cooling water which is produced in the energy production( district heating or district cooling) facilities to residential areas and industrial parks. The district cooling systems of Middle East are the biggest market of plate heat exchanger, but the technical specifications for cooling system are different from the domestic one. To achieve its specifications, the new plate heat exchanger was developed, and its thermal performance results are introduced in this paper.
기구적 설계변수에 따른 판형열교환기의 성능특성에 관한 해석적 연구
손재욱(Jaewook Son),강훈(Hoon Kang),김용찬(Yongchan Kim),박재홍(Jaehong Park),조성열(Sungyoul Cho),임혁(Hyug Lim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Plate heat exchangers have been widely adopted in many industrial applications due to their compactness and high efficiency. Even though the studies on the plate heat exchangers have been performed by many researchers, the studies on the geometric parameters except chevron angle are very limited in open literature. In this study, a simulation algorithm was developed using empirical correlations, and the predicted data were compared with the measured data to validate the model. The effects of the geometric parameters on the heat transfer and pressure drop characteristics of plate heat exchangers were investigated analytically by varying the design parameters such as the chevron angle, plate pitch and aspect ratio at the constant process conditions. In addition, the optimum design methods for the plate heat exchanger were discussed.
김민성(Minsung Kim),박성룡(Seong-Ryong Park),나호상(Ho-Sang Ra),이재훈(Jae-Hoon Lee),정재훈(Jae Hoon Jeong),임혁(Hyug Lim) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
Performance of an air-cooled plate heat exchanger was evaluated in this study. The heat exchanger was manufactured with single-wave plates in parallel assembly. The heat exchanger aims to substitute open-loop cooling towers with closed-loop water circulation, which guarantees cleanliness and compactness. In this study, a prototype single-wave plate heat exchanger was designed and its experimental setup was built in a laboratory scale. Correlation for plate heat exchanger by Chisholm and Wanniarachchi (1991) was applied to water-side heat transfer coefficient in order to estimate air-side heat transfer coefficient. From the test, a wide channel design for air flow will enhance the entire performance and make the heat exchanger reliable.
단일굴곡 및 이중굴곡 판 형상을 갖는 직교류 공랭식 판형열교환기의 전열특성에 대한 실험적 연구
김민성(Minsung Kim),백영진,박성룡(Seong-Ryong Park),나호성(Ho-Sang Ra),정재훈(Jae Hoon Jeong),임혁(Hyug Lim),Jae-Hoon Lee 대한설비공학회 2009 설비공학 논문집 Vol.21 No.6
Experimental study on a cross-flow air-cooled plate heat exchanger (PHE) was performed. Two types of PHEs were manufactured either with single-wave plates or with double-wave plates in parallel. Cooling air flows through the PHEs in a crosswise direction against internal hot water. The heat exchanger aims to substitute open-loop cooling towers with closed-loop water circulation, which guarantees cleanliness and compactness. In this study, prototype single-wave and double-wave PHEs were designed and tested in a laboratory scale experiments. From the tests, the double-wave PHE shows approximately 50% enhanced heat transfer performance compared to the single-wave PHE. However, the double-wave PHE costs 30% additional pressure drop. For the commercialization, a wide channel design for air flow would be essential for performance and reliability
박재홍(Jae-Hong Park),조성열(Sung-Youl Cho),김정규(Jung-Kyu Kim),양명국(Myeong-Kuk Yang),허인은(In-Eun Hur),고성규(Seong-Kyu Ko),임혁(Hyug-Lim),현용익(Yong-Ik Hyun) 한국유체기계학회 2009 유체기계 연구개발 발표회 논문집 Vol.2009 No.-
Applications of the plate heat exchanger are being expanded in ships and marine plants. Marine engine L.O(lubricant oil) cooler is one of the applications of the plate heat exchanger. It has very important role as engine radiator in the ship. Lubricant oil is flowed inside ship engine like the land engine and temperature is up to 80~90℃. Some L.O coolers are mounted in the front of the engine, and operating pressure is up to 4~8 ㎏/㎠. Because vibration of engine is passed to L.O cooler, anti-vibration is required. New L.O cooler for medium speed marine engine was developed, and its performance was evaluated by test and provided in this paper.
스네이크 패턴을 가진 대면적 판형 열교환기의 전열성능에 관한 연구
김정규(Jung-Kyu Kim),박재홍(Jae-Hong Park),조성열(Sung-Youl Cho),양명국(Myeong-Kuk Yang),허인은(In-Eun Hur),고성규(Seong-Kyu Ko),임혁(Hyug-Lim),현용익(Yong-Ik Hyun) 한국유체기계학회 2009 유체기계 연구개발 발표회 논문집 Vol.2009 No.-
In view of space saving, the design of more compact heat exchangers is important. Also, to meet the demands for saving energy and resources today, manufacturers have tried to enhance efficiency and reduce the size and weight of heat exchangers. Over the past decades, there have been tremendous advancements in the manufacturing technology of high efficiency heat exchangers. This has allowed the use of high performance(high heat transfer coefficient and low pressure drop) heat exchangers. Consequently, the use of high performance heat exchanger becomes popular in the design of heat exchangers. When compared with the well-established shell and tube heat exchangers, the plate heat exchanger shows a lot of advantages like high NTU values, compactness, low cost, multi duties and reduced fouling etc. For the higher performance in plate heat exchanger, the snake pattern in the heat transfer plate has been developed instead of the conventional herringbone pattern. The performance of the plate heat exchanger with snake pattern was evaluated by test, and provided in this paper.