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RISS 인기검색어
- 검색키워드
- 저자 : B. Agung (검색결과 4 건)
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I. C. Sukmaji,H. Rahmanto,B. Agung,K. H. Choi,J. R. Kim 한국태양에너지학회 2009 한국태양에너지학회 학술대회논문집 Vol.2009 No.11월
The liquid solar air conditioning system is introduced as an alternative solution to control air condition and to save electrical energy consumption. The heat and mass transfer performances of dehumidifier/regenerator in liquid solar air conditioning system are influenced by air and desiccant condition. The application of this system, the thermal energy from the sun and inlet air are unable to control, but operation parameter of other components such as pump, fan and sensible cooling unit are able to control. The equilibrium point of heat and mass transfer are the liquid desiccant and inlet air conditions, where, the heat and mass are not transferred between the liquid desiccant and vapor air. By knowing equilibrium point of heat and mass transfer, the suitable optimal desiccant conditions for certain air condition are funded. This present experiment study is investigated the equilibrium point heat and mass transfer in various air and desiccant temperature. The benefit of equilibrium point heat and mass transfer will be helpful in choose and design proper component to optimize electrical energy consumption.
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Upwelling Variability along the Southern Coast of Bali and in Nusa Tenggara Waters
Nining Sari Ningsih,Noviani Rakhmaputeri,Agung B. Harto 한국해양과학기술원 2013 Ocean science journal Vol.48 No.1
Spatial and temporal variation of upwelling along the southern coast of Bali and in the Nusa Tenggara waters - Indonesia was studied by using satellite image data of sea surface temperatures and chlorophyll-a from September 1997 to December 2008. This study clearly reveals annual upwelling in the regions from June to October, associated with the southeast monsoon cycle, with the sea surface temperature (chlorophyll-a concentration) being colder (higher) than that during the northwest monsoon. In addition, this study also shows that the upwelling strength is controlled remotely by ENSO and IOD climate phenomena. During El Niño/positive IOD (La Niña/negative IOD) periods, the Bali - Nusa Tenggara upwelling strength increases (decreases).
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R. Hengki Rahmanto,K.H. Choi,Agung B.,Sukmaji I.C. 한국태양에너지학회 2009 한국태양에너지학회 학술대회논문집 Vol.2009 No.11월
High water vapour content in air can cause a number of problems as for human or surrounding materials. For human a high water vapour can create physiological stress, discomfort, and also can encourage ill health. While, the cause for the environment is can accelerate the corrosion of metals, accelerate the growth of spores and mould, can reduce the electrical resistance of insulators and etc. Desiccant systems have been proposed as energy saving alternatives to vapor compression air conditioning for handling especially the latent load and also sensible load. Use of liquid desiccants offers several design and performance advantages over solid desiccants, especially when solar energy is used for regeneration. The liquid desiccants contact the gas inside the packed tower of liquid desiccant solar cooling system and the heat transfer and mass transfer will occur. This thesis is trying to study the characteristics inside the packed tower of dehumidifier systems. This characteristics consist of mass transfer rate, heat transfers rate, human comfort and energy that consume by the system. Those characteristics were affected by air flow rates, air temperature and humidity, and desiccant temperature and all that variation will influence the performance of the systems. The results of this thesis later on can be used to determine the best performance of the systems.
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에어커튼 설치 시의 저장 창고에서의 에너지절약 효과에 관한 연구
최동원(Choi Dong-Won),엄한샘(Eum Han-Seom),윤정인(Yoon Jung-In),최광환(Choi Kwang-Hwan),B. Agung,Yoo Jin-Kwang 한국태양에너지학회 2013 한국태양에너지학회 학술대회논문집 Vol.2013 No.4
An air curtain system is one of the most effective devices to cut the energy loss in stead of conventional air conditioning system. Especially when it is applied to the chamber that needs circumstance to be controlled, it can bring up more energy conservation than any type of air conditioner. For those reasons, air curtain system is now highlighted from the point of energy saving and it would be expected as an effective method replacing conventional air conditioning. It was also reported that air curtain system has more advantages than typical air conditioner when it is installed in the cold storage. This study has dealt with field test results of air curtain system where it was attached with a large-size scale low-temperature warehouse in Korea. It was also clear that energy saving with the air curtain system has recorded above 30% of total electricity consumption compared to conventional refrigerating system and it also has area to be compensated for the future.
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