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풍익(Feng Yi),이강종(Kang-Jong Lee),변호원(Ho-Won Byun),김내현(Nae-Hyun Kim) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.6
R-410a distribution was experimentally studied for a simulated parallel flow heat exchanger having combining-dividing header. Tests were conducted with upward flow and downward flow for the mass flux from 60 to 120 kg/㎡s and quality from 0.2 and quality of return part from 0.4 to 0.6. It was found that, in the combining-dividing header, liquid was forced to rear part of the header as mass flux or quality increased.
풍익(Feng Yi),이강종(Kang-Jong Lee),변호원(Ho-Won Byun),김내현(Nae-Hyun Kim) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.11
R-410a distribution was experimentally studied for a simulated parallel flow heat exchanger having combining-dividing header. Tests were conducted with upward flow and downward flow for the mass flux from 60 to 120 kg/m²s and quality from 0.2 and quality of return part from 0.4 to 0.6. It was found that, in the combining-dividing header, liquid was forced to rear part of the header as mass flux or quality increased.
냉수, 스팀 동시 공급형 흡수식 히트펌프 시제품 개발에 관한 연구
풍익(Feng Yi),김한길(Han Gil Kim),하현호(Hyun Ho Ha),조대한(Dea Han Cho),김인관(Dea Han Cho) 대한설비공학회 2020 대한설비공학회 학술발표대회논문집 Vol.2020 No.6
The combination of Absorption Heat Pump Type II and Single Effect Absorption Chiller is the Absorption Heat Transformer with simultaneous supply of chilled water and steam. This type of absorption heat transformer can supply steam of 120℃ and chilled water of 8℃ simultaneously by using hot water of 90℃ as heat source. A heat source of the cycle of this absorption heat transformer passes through generator and high temperature generator. The consist formation of the cycle are evaporator to produce chilled water, high temperature absorber to produce high temperature water, low temperature absorber and condenser for heat dissipation; in addition, the control system is structured exclusively for steam and chilled water. A prototype is designed based on ability of supplying 50 usRT of cooling capacity and 100㎏/h of steam, and manufactured to execute performance evaluation accordingly.
대구경 원관이 적용된 웨이브 휜-관 열교환기의 공기측 성능
이을종(Eul-Jong Lee),풍익(Yi Feng),심용섭(Yong-Sub Shim),김내현(Nae-Hyun Kim) 대한설비공학회 2012 대한설비공학회 학술발표대회논문집 Vol.2012 No.11
In this study, air-side performance of wave fin-and-tube heat exchangers having large diameter(12.7mm, 15.9mm) tubes was investigated. Eight samples having different tube rows were tested. For both configurations, the effect of tube row on j-factor was negligible. However, f-factor increased as the tube row decreased. The j-factor and f-factor of the tube diameter 12.7mm sample were approximately 32% and 26% higher than those of 15.9 mm sample.
중대형급 냉수, 스팀 동시 공급형 흡수식 히트펌프 시제품 성능시험 결과 분석
하현호(Hyun Ho Ha),김한길(Han Gil Kim),풍익(Feng Yi),조대한(Dea Han Cho),유인평(In Pyung Yoo),권오경(Oh Kyung Kwon),배경진(Kyung Jin Bae),김남용(Nam Yong Kim),홍성주(Sung Joo Hong),박찬우(Chan Woo Park),김인관(In Gwan Kim) 대한설비공학회 2021 대한설비공학회 학술발표대회논문집 Vol.2021 No.6
The combination of Absorption Heat Pump Type II and Single Effect Absorption Chiller is the Absorption Heat Transformer with simultaneous supply of chilled water and steam. This type of absorption heat transformer can supply steam of 120℃ and chilled water of 8℃ simultaneously by using hot water of 90℃ as heat source. A heat source of the cycle of this absorption heat transformer passes through generator and high temperature generator. The consist formation of the cycle are evaporator to produce chilled water, high temperature absorber to produce high temperature water, low temperature absorber and condenser for heat dissipation; in addition, the control system is structured exclusively for steam and chilled water. A prototype is designed based on ability of supplying 100 usRT of cooling capacity and 200kg/h of steam, and manufactured to execute performance evaluation accordingly.