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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
대한설비공학회 설비공학논문집 설비공학논문집 제19권 제1호
발행연도
2007.1
수록면
94 - 131 (38page)

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초록· 키워드

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A review on the papers published in the Korean Journal of Air-Conditioning and Refrigerating Engineering in 2004 and 2005 has been done. Focus has been put on current status of research in the aspect of heating, cooling, air-conditioning, ventilation, sanitation and building environment. The conclusions are as follows.
(1) Most of fundamental studies on fluid flow were related with heat transportation of facilities. Drop formation and rivulet flow on solid surfaces were interesting topics related with condensation augmentation. Research on micro environment considering flow, heat, humidity was also interesting for comfortable living environment. It can be extended considering biological aspects. Development of fans and blowers of high performance and low noise were continuing topics. Well developed CFD and flow visualization (PIV, PTV and LDV methods) technologies were widely applied for developing facilities and their systems.
(2) The research trends of the previous two years are surveyed as groups of natural con￢vection, forced convection, electronic cooling, heat transfer enhancement, frosting and defrosting, thermal properties, etc. New research topics introduced include natural convection heat transfer enhancement using nanofluid, supercritical cooling performance or oil miscibility of CO₂, enthalpy heat exchanger for heat recovery, heat transfer enhancement in a plate heat exchanger using fluid resonance.
(3) The literature for the last two years (2004~2005) is reviewed in the areas of heat pump, ice and water storage, cycle analysis and reused energy including geothermal, solar and unused energy). The research on cycle analysis and experiments for CO₂ was extensively carried out to replace the Ozone depleting and global warming refrigerants such as HFC and HCFC refrigerants. From the year of 2005, the Gas Engine Heat Pump (GHP) has been paid attention from the viewpoint of the gas cooling application. The heat pipe was focused on the performance improvement by the parametric analysis and the heat recovery applications. The storage systems were studied on the performance enhancement of the storage tank and cost analysis for heating and cooling applications. In the area of unused energy, the hybrid systems were extensively introduced and the life cycle cost analysis (LCCA) for the unused energy systems was also intensively carried out.
(4) Recent studies of various refrigeration and air-conditioning systems have focused on the system performance and efficiency enhancement. Heat transfer characteristics during evaporation and condensation are investigated for several tube shapes and of alternative refrigerants including carbon dioxide. Efficiency of various compressors and expansion devices are also dealt with for better modeling and, in particular, performance improvement. Thermoelectric module and cooling systems are analyzed theoretically and experimentally.
(5) According to the review of recent studies on ventilation systems, an appropriate ventilation systems including machenical and natural are required to satisfied the level of IAQ. Also, an recent studies on air-conditioning and absorption refrigeration systems, it has mainly focused on distribution and dehumidification of indoor air to improve the performance were carried out.
(6) Based on a review of recent studies on indoor environment and building service systems, it is noticed that research issues have mainly focused on optimal thermal comfort, improvement of indoor air quality and many innovative systems such as air-barrier type peri￢meter-less system with UFAC, radiant floor heating and cooling system and etc. New approaches are highlighted for improving indoor environmental condition as well as minimizing energy consumption, various activities of building control and operation strategy and energy performance analysis for economic evaluation.
#Air conditioning(공기조화) #Refrigeration(냉동) #Fluid machinery(유체기계) #Piping (배관) #Nanofluid(나노유체) #Heat exchanger(열교환기) #Heat transfer(열전달) #Thermal property(열물성) #Heat pump(열펌프) #Heat pipe(히트파이프) #Phase change(상변화) #Thermal storage(축열) #Cylcle analysis(사이클해석) #Renewable energy(신재생에너지) #Evaporation(증발) #Condensation(응축) #Boiling(비등) #Compressor(압축기) #Expansion device(팽창장치) #Refrigerant(냉매) #Peltier element(열전소자) #Ventilation(환기) #Duct(덕트) #Cooling tower(냉각탑) #Absorption cooling(흡수식 냉동) #Indoor thermal environmnet(실내열환경) #Building thermal load(건물열부하) #Building energy(건물에너지)

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ABSTRACT
1. 서론
2. 유동일반, 유체기계, 배관 분야
3. 열전달, 열교환기 및 열물성
4. 열펌프, 히트파이프, 축열, 사이클해석, 신재생에너지
5. 냉동/냉방시스템, 증발/비등/응축, 압축기, 팽창장치, 열전소자 및 냉매
6. 환기, 덕트 및 공조시스템 분야
7. 건축 실내환경 및 설비시스템
8. 결론
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