설비공학 분야의 최근 연구 동향：2012년 학회지 논문에 대한 종합적 고찰

Abstract

This article reviews the papers published in the Korean Journal of Air-Conditioning and Refrigeration Engineeringduring 2012. It is intended to understand the status of current research in the areas of heating, cooling, ventilation, sanitation,and indoor environments of buildings and plant facilities. The conclusions are as follows：(1) The research works on thermal and fluid engineering have been reviewed as groups of fluid machinery, pipes and valves,fuel cells and power plants, ground-coupled heat pumps, and general heat and mass transfer systems. Research issues aremainly focused on new and renewable energy systems, such as fuel cells, ocean thermal energy conversion power plants,and ground-coupled heat pump systems. (2) Research works on the heat transfer area have been reviewed in the categories of heat transfer characteristics, pool boilingand condensing heat transfer, and industrial heat exchangers. Researches on heat transfer characteristics included the resultsfor natural convection in a square enclosure with two hot circular cylinders, non-uniform grooved tube considering tubeexpansion, single-tube annular baffle system, broadcasting LED light with ion wind generator, mechanical property andmicrostructure of SA213 P92 boiler pipe steel, and flat plate using multiple tripping wires. In the area of pool boiling andcondensing heat transfer, researches on the design of a micro-channel heat exchanger for a heat pump, numerical simulationof a heat pump evaporator considering the pressure drop in the distributor and capillary tubes, critical heat flux on athermoexcel-E enhanced surface, and the performance of a fin-and-tube condenser with non-uniform air distribution anddifferent tube types were actively carried out. In the area of industrial heat exchangers, researches on a plate heat exchangertype dehumidifier, fin-tube heat exchanger, an electric circuit transient analogy model in a vertical closed loop ground heatexchanger, heat transfer characteristics of a double skin window for plant factory, a regenerative heat exchanger dependingon its porous structure, and various types of plate heat exchangers were performed. (3) In the field of refrigeration, various studies were executed to improve refrigeration system performance, and to evaluatethe applicability of alternative refrigerants and new components. Various topics were presented in the area of refrigerationcycle. Research issues mainly focused on the enhancement of the system performance. In the alternative refrigerant area,studies on CO2, R32/R152a mixture, and R1234yf were performed. Studies on the design and performance analysis of variouscompressors and evaporator were executed. (4) In building mechanical system research fields, twenty-nine studies were conducted to achieve effective design of mechanicalsystems, and also to maximize the energy efficiency of buildings. The topics of the studies included heating and cooling,HVAC system, ventilation, renewable energy systems, and lighting systems in buildings. New designs and performance testsusing numerical methods and experiments provide useful information and key data, which can improve the energy efficiencyof buildings. (5) In the fields of the architectural environment, studies for various purposes, such as indoor environment, building energy,and renewable energy were performed. In particular, building energy-related researches and renewable energy systems havebeen mainly studied, reflecting interests in global climate change, and efforts to reduce building energy consumption bygovernment and architectural specialists. In addition, many researches have been conducted regarding indoor environments.