2004년 의료기관 평가기준 및 지침의 문제점과 개선방안

현석균,Hyeon, Seok-Gyun 대한병원협회 2005 대한병원협회지 Vol.34 No.5

질 향상 사업팀 활성화 전략

현석균 한국의료QA학회 1998 가을학술대회 Vol.1998 No.-

시험공간에 대한 난방부하 실증실험 및 계산

현석균,홍희기,유호선 대한설비공학회 2002 설비공학 논문집 Vol.14 No.2

As a way to assess the reliability of programs for building energy analysis, verification experiment and calculation of heating load are simultaneously conducted for a well-defined test space. Experimental conditions are carefully set to minimize uncertainties associated with radiation heating, air change, infiltration, and room-to-room interaction. Dyna- mic load calculations using TRNSYS, which are performed for two different computation domains, rely on the energy rate control that represents inherent load characteristics of a space. The predicted instantaneous heating load favorably simulates the overall behavior the measured one, though the latter fluctuates much more rapidly than the former Comparison of the accumulative load between the experiment and calculations shows a close agreement within an engineering tolerance, regardless of the computation model. It is deduced from such findings that the present experimental results along with weather information can serve as a set of reference data for validating load calculation softwares from the users'standpoint. In order to enhance the completeness of this work, a complementary study on the cooling load for the same test space is highly recommended.

시험공간에 대한 냉방부하 실증실험 및 계산

현석균(Suk Kyun Hyun),홍희기(Hiki Hong),유호선(Hoseon Yoo) 대한설비공학회 2002 대한설비공학회 학술발표대회논문집 Vol.2002 No.-

CQI 활동 후 사후관리 체계 조사연구

현석균 ( Seok Kyun Hyun ),유승흠 ( Seung Hum Yu ),오현주 ( Hyohn Joo Oh ) 한국병원경영학회 2002 병원경영학회지 Vol.7 No.2

This study was conducted to determine whether follow-up management is carried out continuously following CQI activity and to analyze the factors behind the success and failure of follow-up management. Past presentations from 19941999 of CQI coordinators and lecturers from various institutions who presented at The Korean Society of Quality Assurance in Health Care(KoSQA) on the conditions of follow-up management in each institution were analyzed. The results of this study were as follows; Since the number of subjects on CQI increased each year at symposiums, this has expanded to all medical institutions. Although medical institutions usually conduct 11-20 subjects on CQI per year, there were many such occasions where more than 31 subjects were conducted. Moreover, institutions with less than 800 beds have come up with more projects than those with more than 800 beds, thus 23.3% of these institutions had at least 1 person involved in 4 projects. Tihs had created an overload of responsibilities for specific persons involvement, prompting them to incline toward formahties in their work rather than substantial activities. Among the projects presented at the symposiums, 51.7% demonstrated that follow-up management could be carried out. In particular, 55.3% of the projects from provincial regions could carry out follow-up management compared to 48.8% in Seoul. Moreover, it was demonstrated that 80% of the projects from institutions with 600-799 beds carried out follow-up management most effectively. With regards to previous presentations, the older they were, it was found that follow-up management could not be effectively carried out. Some institutions that responded that follow-up management was carried out effectively in their institutions were found to have conducted follow-up management without any inspection strategies or the appropriate tools. CQI activities were executed and terminated with no consistency and team members had no real concern for it. The most important factors that contribute to an effective follow-up management are the need for concern and interest from the directors of the hospitals, from the relevant departments and team members in addition to the role of the supervising department, follow-up management through management of target goals, consistency in tasks along with communication between all team members. The biggest problems were perceived to be overload of work due to accumulation of proposed projects in addition to lack of awareness pertaining to follow-up management. CQI is beneficial for all staff for the improvement of the mind and business adrmnistration and thus it is believed to be desirable. To carry out follow-up mana-gement effectively, leadership, analysis and application of information, follow-up management and planning, as well as quality management are perceived to be essential, on the other hand, the results showed a significant difference. To prevent CQI activities from becoming just an activity, the basic system should be reconstructed and augmented based on the problems derived from the results of this study. Moreover, we hope this study will be used as reference material that would encourage the administration of follow-up management after CQI activities in most hospitals. Furthermore, various studies on follow-up management should be conducted for CQI activities in the future.

건물의 열에너지 해석에 대한 실증실험

현석균(Suk Kyun Hyun),유호선(Hoseon Yoo),홍희기(Hiki Hong) 대한설비공학회 2001 대한설비공학회 학술발표대회논문집 Vol.2001 No.-

한국형 아파트의 위치별 난방 에너지 소비에 대한 해석

박유원,현석균,홍희기 경희대학교 산학협력기술연구원 2002 산학협력기술연구논문집 Vol.8 No.-

The number of apartment houses in Korea has been increased in a very short period, taking about a half of total keeping-house. If energy evaluation and saving method for them are developed, a great deal of energy can be saved. This work is aimed at energy consumption according to position for Korean-style apartment house by using TRNSYS. As a result in the heating load, there is a difference of 10~63 percent according to the household the floor, side wall, tip floor and bottom floor in apartment. Also, with increasing floor area, difference of heating load between sidewall and middle household is decreasing. These results suggest that the standard of insulating materials in top and bottom floor should be enhaneced for saving energy.

한국형 아파트의 냉난방 에너지에 미치는 제 인자의 영향

유호선,현석균,홍희기 대한설비공학회 2002 설비공학 논문집 Vol.14 No.11

This work is aimed at estimating the effects of various factors on the energy consumption of Korean-style apartment houses using TRNSYS. The factors considered here include the nominal size of floor area, type of remodeling, azimuth, sidewall insulation, and window type. Based on some assumptions, an actual apartment house is simplified into a model that is used for thermal load calculations. The simplified model is validated by showing a good agreement with the actual one in the predicted result. Remodeling balconies into unconditioned buffer spaces yields a favorable thermal performance in comparison with the original type regardless of the nominal size. Incorporating balconies into a conditioned indoor space leads to sharp increases in thermal loads, which must be avoided in view of energy conservation as well as structural problem. A quantitative assessment on the azimuthal effect indicates that the heating energy can be saved up to 16% by taking the south or southeast direction. Reduction in the heating load with enhancing the sidewall insulation is gradual, so that a cost-effectiveness analysis may be needed when amending the regulations concerned. Glazing appears to significantly affect the heat transfer through window. A typical case illustrates that the heating load is decreased about 25% by simply adopting triple glazing instead of double glazing.

시험공간에 대한 냉방부하 실증실험 및 계산

유호선,현석균,김용식,홍희기 대한설비공학회 2003 설비공학 논문집 Vol.15 No.8

In order to assess the reliability of a building energy simulation program (TRNSYS) from the standpoint of user, a set of verification experiment and calculation of cooling load for a test space is carried out. This work is a complement of the previous study that dealt with heating load for the same space. The test space is kept airtight to eliminate the source of uncertainties in modeling. A window-mounted, on/off controlled air-conditioner is used for cooling, whose performance has been established a priori. The calculation encompasses two models for evaluating cooling load in TRNSYS: energy rate control and temperature level control. Comparison of the total cooling loads obtained from different sets of experimental data enables to validate the measurements. The experimental result shows that the latent load is fairly large even in the absence of apparent air change in the space, which needs to be clarified. Each of hourly and daily accumulated sensible loads is compared between the experiment and two calculation models. Despite an inconsistency associated with solar irradiation, both of the models agree favorably with the experiment within a tolerance, illustrating their capability of properly predicting space thermal loads.

한국형 아파트의 난방에너지 분석 1: 위치의 영향

홍희기,유호선,현석균,박유원,김용식 대한설비공학회 2004 설비공학 논문집 Vol.16 No.1

This paper presents an analysis of heating energy for apartment houses in a Korean-style apartment building, paying special attention on the effect of their location. Six representative locations encompass three floors and two placements on each floor. Two different roof types are also considered. In order to incorporate actual tenant's refit, a five-zone model composed of one conditioned and four unconditioned spaces is developed. TRNSYS 15 is adopted to estimate heating energy. The predicted results show fairly good agreements with the available measured data, validating the present model. Heating energy needed for an apartment located at the uppermost and lowermost floors is far greater compared with the case of intermediate floors. In addition, an appreciable difference is found between apartment with and without side end wall. Insulation thickness of walls, floors and underground structure appears to be a dominant factor affecting heating energy, which leads to needs of revision of the related regulation. Ridged-roofs instead of flat-roofs are highly recommended in apartment buildings for effective energy saving. It is finally concluded that the location- dependent, severe imbalance in heating energy should be improved and/or reflected in the policy making process and design standards.