• 설비공학논문집
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• 제15권6호
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• pp.495-501
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• 2003

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.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2009년도 하계학술발표대회 논문집
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• pp.1014-1019
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• 2009

The optimal control system for heat source and HVAC system has been developed for minimizing energy consumption while maintaining the comfort of indoor thermal environment in terms of the environmental variables such as time varying indoor load and outdoor temperatures. The optimal set-points of control parameters are supply air temperature and chilled or hot water temperatures. The optimal control study has been implemented for biosafety laboratory by using TRNSYS simulation program in order to investigate energy performance for heat source and HVAC system.

• 설비공학논문집
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• 제18권2호
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• pp.163-171
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• 2006

In order to control multi-zone temperatures, a multi-type air-conditioning system may be used. In this study, control algorithms for the compressor and the electronic expansion valve of a multi-type air-conditioning system were developed by using fuzzy logics. The compressor control algorithm was composed of a compressor pressure setpoint algorithm, a compressor pressure setpoint reset algorithm, and a compressor frequency setpoint algorithm. The electronic expansion valve control algorithm was composed of an indoor temperature control algorithm, and a superheat control algorithm. These algorithms were applied to a multi-type air-conditioning system. Test showed good results for the control of a multi-type air-conditioning system.

• 설비공학논문집
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• 제16권9호
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• pp.881-888
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• 2004

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.

• 대한설비공학회지:설비저널
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• 제20권6호
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• pp.379-390
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• 1991

• 대한설비공학회지:설비저널
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• 제20권6호
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• pp.391-408
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• 1991

• 설비공학논문집
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• 제12권5호
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• pp.439-447
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• 2000

The PEM(Personal Environment Module) system is an individual air conditioning system developed in order to improve thermal comfort in office buildings. In this study, thermal characteristics of a PEM system have measured experimentally and compared with UFAC(Under Floor hir Conditioning) system in the EC(Environment Chamber) constructed in KIER. Results showed that the PEM system was better than UFAC system for thermal comfort and energy conservation.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 1996년도 추계학술대회 학술발표 논문집
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• pp.151-153
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• 1996

가전제품에 사용돠고 있는 단상유도전동기의 가변속제어를 통해 다양한 소비자의 요구조건에 만족하는 제품을 개발하는 것이 중요한 문제로 대두되고 있다. 이러한 가변속제어에 필요한 속도정보를 피이드백받기 위해 유도전동기의 입력전압과 전류를 이용하여 속도추정기를 Adaptive Network Fuzzy Inference System을 이용하여 개발하였다.

• 기계저널
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• 제35권2호
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• pp.154-166
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• 1995

냉동\ulcorner공조기의 성능을 높이기 위해서는 정상상태 운전시는 물론 증발기 열부하 등 각종 작동 조건의 변화에 대응하여 운전의 평형점(balance point) 추이를 적절하게 조정함과 동시에 냉동 사이클 각부의 냉매 상태량을 과도적으로도 제어해야 한다. 이 글에서는 냉동\ulcorner공조기의 자동 제어에 있어서 가장 중요한 요소중의 하나인 냉매계통의 모델화와 냉동 사이클의 응답 및 제어 등에 관해서 서술하고자 한다.

• 한국산업안전학회:학술대회논문집
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• 한국안전학회 1998년도 추계 학술논문발표회 논문집
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• pp.283-287
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• 1998

안전방제 센서용으로서 습도제어는 급속한 과학기술의 발전에 따라 정밀, 전자, 식품, 섬유, 농업 등의 산업발전에도 상호 연관되어 습도센서는 생산관리, 품질향상, 빌딩 공조제어를 위해서 개발이 절대로 요구되고 있다. 습도센서는 생산공정의 제어와 산업안전의 경보 시스템분야에서부터 인간생활, 식물의 생육에 이르기까지 광범위하게 사용되고 있다. 1.2.3) 특히 반도체 산업은 전공정에 걸쳐 습도를 초정밀하게 제어하여야 한다. (중략)