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룰 베이스를 이용한 정풍량 공조기 고장 검출 및 진단 시스템의 실험적 연구
한도영,김진,Han, Do-Young,Kim, Jin 대한설비공학회 2004 설비공학 논문집 Vol.16 No.9
The fault detection and diagnosis technology may be applied in order to decrease the energy consumption and the maintenance cost of the air-conditioning system. In this study, an air handling unit fault test apparatus was built and fault diagnosis algorithms were applied to diagnose various faults of an air handling unit. Test results showed the good diagnosis for applied faults. Therefore, these algorithms may be effectively used to develope the real time fault detection and diagnosis system for the air handling unit.
한도영,주영덕,김진,이준호,Han, Do-Young,Joo, Young-Duk,Kim, Jin,Lee, Jun-Ho 대한설비공학회 2003 설비공학 논문집 Vol.15 No.3
Control algorithms of an air handling unit by using the mixing box plenum pressures were developed and verified by experiments. Control algorithms developed for this study were the setpoint algorithms for the outdoor damper position, the outdoor/fixed plenum pressure, and the return/exhaust plenum pressure. The outdoor/fixed plenum pressure setpoint was used to control the bypass damper position, and the return/exhaust plenum pressure setpoint was used to control the return fan speed. Experimental results showed the good control of the required outdoor air demand. Therefore, setpoint algorithms developed for this study may effectively be applied for the control of the VAV air handling unit.
한도영,김진,Han, Do-Young,Kim, Jin 대한설비공학회 2004 설비공학 논문집 Vol.16 No.9
Control algorithms for a dual source chiller air conditioning system were developed. These are control algorithms for the supply air temperature control, the supply header chilled water temperature control, the chiller chilled water temperature control, and the cooling tower water temperature control. These algorithms were analyzed by using a dynamic simulation program. Simulation results showed the energy savings and the satisfactory controls of an absorption and centrifugal chiller air conditioning system. Therefore, control algorithms developed for this study may effectively be used for the improved controls of the dual source chiller air conditioning system.
한도영,김진,Han, Do-Young,Kim, Jin 대한설비공학회 2003 설비공학 논문집 Vol.15 No.6
Control algorithms for the absorption air conditioning system may be developed by using dynamic models of the system. The simplified effective dynamic models, which can predict the dynamic behaviors of the system, may help to develop effective control algorithms for the system. In this study, control algorithms for an absorption air conditioning system were developed by using a dynamic simulation program. A cooling water inlet temperature control algorithm, a chilled water outlet temperature control algorithm, and a supply air temperature control algorithm, were developed and analyzed. The steepest descent method was used as an optimal algorithm. The simulation results showed energy savings and the effective controls of an absorption air conditioning system.
열환경챔버의 냉방 시뮬레이션 프로그램 개발에 관한 연구
한도영(Do-young Han),이한홍(Han-Hong Lee),류규현(Kyu-Hyun Ryu) 한국공작기계학회 1999 한국공작기계학회지 Vol.8 No.5
The thermal environmental chamber has been using in maintaining weather condition, keeping thermal capacity under heating and cooling load fluctuation and for the performance testing of cooling system or air-conditioner on artificial environment. In order to make the various environmental conditions in the thermal environmental chamber, the proper cooling system is necessary to eliminate the heating load produced inside the chamber and to maintain the designed environmental condition. For this reason, the optimal design of cooling system and the prediction of performance is also required. This paper describes the prediction of performance of cooling system in the thermal environmental chamber with the capacity of 37,000㎉/hr which is developed for the test of performance in heating mode of heat pump system. In the result, this paper is trying to develop simulation program on the base of mathematical models and which can be applied effectively to the optimal design of cooling system and prediction of performance to the inside and outside change of environmental load.