• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.10 no.3
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• pp.251-259
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• 1998

Environmental control facilities are used to simulate an environment or combination of environments under which many kinds of research and tests can be performed. The design of the control system to maintain desired environmental conditions is essential to proper operation of the facility. A simulation model of the facility has been developed by analyzing each component of the system thermodynamically with necessary properties and heat transfer relations. Using the system simulation model, the required characteristics of the control system has been investigated. PI controller is considered as the most probable controller for this kind of the facility, and electric heater power is shown as the Proper manipulated variable for temperature control.

• International Journal of Air-Conditioning and Refrigeration
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• v.8 no.1
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• pp.62-72
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• 2000

Environmental control facilities are used to simulate an environment or combination of environments under which many kinds of research and tests can be performed. The design of the control system to maintain desired environmental conditions is essential to proper operation of the facility. A simulation model of the facility has been developed by analyzing each component of the system thermodynamically. with necessary properties and heat transfer relations. Using the system simulation model, the required characteristics of the control system has been investigated. PI controller is considered as the most probable controller for this kind of the facility, and electric heater power is shown as the proper manipulated variable for temperature control.

• International conference on construction engineering and project management
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• 2022.06a
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• pp.393-400
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• 2022

Agent-based modeling (ABM), as a relatively new simulation technique, has recently gained in popularity in the civil engineering domain due to its uniquely advantageous features. Among many civil engineering applications, ABM has been applied to facility operation and management, such as energy consumption management, as well as the enhancement of maintenance and repair processes. The former studies used ABM to manage energy consumption through simulating human energy-related behaviors and their interactions with facilities, as well as electrical, heating, and cooling systems and appliances, while the latter used ABM to enhance maintenance process through facilitating coordination, negotiation, and decision making between facility managers, service providers, and repair workers. The present study aims to provide a short qualitative review on the most recent applications of ABM in the above-mentioned areas. Based on the review and follow-up analysis, the study identifies the advantages, disadvantages, and limitations of ABM applications to facility operation and management, and offers several potential future research topics in the hope of filling the existing literature gaps.

• Asian Journal of Atmospheric Environment
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• v.7 no.2
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• pp.72-84
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• 2013

In the study, pollution levels of indoor polycyclic aromatic hydrocarbons (PAHs) in public facilities (vapor phase or particulate phase) were evaluated, and a health risk assessment (HRA) was carried out based on exposure scenarios. Public facilities in Korea covered by the law, including underground subway stations, funeral halls, child care facilities, internet cafes (PC-rooms), and exhibition facilities (6 locations for each type of facility, for a total of 48 locations), were investigated for indoor assessment. For the HRA, individual excess cancer risk (ECR) was estimated by applying main toxic equivalency factor (TEF) values suggested in previous studies. Among the eight public facilities, internet cafes showed the highest average $PM_{2.5}$ concentration at $110.0{\mu}g/m^3$ (range: $83.5-138.5{\mu}g/m^3$). When assuming a risk of facility exposure time based upon the results of the surveys for each public facility, the excess cancer risk using the benzo(a)pyrene indicator assessment method was estimated to be $10^{-7}-10^{-6}$ levels for each facility. Based on the risk associated with various TEF values, the excess cancer risk based upon the seven types cancer EPA (1993) and Malcolm & Dobson's (1994) assessment method was estimated to be $10^{-7}-10^{-5}$ for each facility. The excess cancer risk estimated from the TEF EPA (2010) assessment was the highest: $10^{-7}-10^{-4}$ for each facility. This is due to the 10-fold difference between the TEF of dibenzo(a,e)fluoranthene in 2010 and in 1994. The internet cafes where smoking was the clear pollutant showed the highest risk level of $10^{-4}$, which exceeded the World Health Organization's recommended risk of $1{\times}10^{-6}$. All facilities, with the exception of internet cafes, showed a $10^{-6}$ risk level. However, when the TEFs values of the US EPA (2010) were applied, the risk of most facilities in this study exceeded $1{\times}10^{-6}$.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2008.11a
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• pp.437-441
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• 2008

The community mixed-support facility in Japan is making efforts to try various approaches according to the changes made to allow the privatization of public facilities on the basis of Act on Special Measures for Urban Regeneration since 2004. Due to this change in policy, the community mixed-support facility is now taking further steps in trying to implement variety of approaches in the perspective of urban regeneration and urban maintenance and at the same time the trend of installation of community facility has gone through vivid changes for the last 20 years. The causes of this are from the social demand that claims for of new facilities and the change in the subsidy system in relation to equality in facility installation. Examples of the first cause can be the building of perpetuating educational society, an execution or a movement towards the society of gender equality, a countermovement for an aging society as well as a welfare society, and recently social phenomenon related to consumption is becoming an issue. And for the last, the number of construction of facilities is increasing that grow out of the traditional facility system. The complex of community mixed-support facility will provide public administrative and community mixed-support services to local people as well as to form a notion of community and a feeling of solidarity. Ultimately, this will develop local areas by regional interchanging of information. In this very research, we will analyze the community mixed-support facility and its characteristics as well as its implications and consider the types of complex through many preceding instances in Japanese community mixed-support facility.

• Korean Institute of Interior Design Journal
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• v.24 no.2
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• pp.11-20
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• 2015

To make provision for the super-aged society, the senior welfare facility which is a kind of typical physical environment of the nursing service would be expected to perform a very important role in local community. This study was conducted to identify the constructs of the servicescapes of senior welfare facility and to draw analysis indicators of it. For this, we performed literature review based on domestic & foreign government guide, service marketing theory and interior architectural results concerning the physical environment of the senior welfare facility. The result of this study showed as follows: servicescapes of the senior welfare facility could be explained as "a whole set of physical environment to support a variety of services provided by the senior welfare facility for the elderly or services of the kind of tangible clues". Analysis indicators of the senior welfare facility's servicescape could be explained as five factors: safety factor, functional factor, aesthetic factor, ambient factor and social factor. In addition we developed 37 pieces of detailed factors referred to five factors. The evaluation and verification of analysis indicators was carried out through 8 experts in-depth interviews. We inspected importance factor using a 5-point Likert scale, therefore safety factor was 4.41, functional factor was 4.27, aesthetic factor was 3.66, ambient factor was 4.20 and social factor was 4.25. More than anything else, in this study, there is a sense that it has established the concept of servicescape adapted to the senior welfare facility and contained a social element between the employees and the physical environment. Theoretical and practical implications of findings are discussed, and future research directions are proposed. we expect to be a little or benefits to the senior welfare facility corresponding to the future of the super-aged society.

• Nuclear Engineering and Technology
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• v.44 no.7
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• pp.735-744
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• 2012

In order to quantify the flow distribution characteristics of APR+ reactor, a test was performed on a test facility, ACOP ($\underline{A}$PR+ $\underline{C}$ore Flow & $\underline{P}$ressure Test Facility), having a length scale of 1/5 referring to the prototype plant. The major parameters are core inlet flow and outlet pressure distribution and sectional pressure drops along the major flow path inside reactor vessel. To preserve the flow characteristics of prototype plant, the test facility was designed based on a preservation of major flow path geometry. An Euler number is considered as primary dimensionless parameter, which is conserved with a 1/40.9 of Reynolds number scaling ratio. ACOP simplifies each fuel assembly into a hydraulic simulator having the same axial flow resistance and lateral cross flow characteristics. In order to supply boundary condition to estimate thermal margins of the reactor, the distribution of inlet core flow and core exit pressure were measured in each of 257 fuel assembly simulators. In total, 584 points of static pressure and differential pressures were measured with a limited number of differential pressure transmitters by developing a sequential operation system of valves. In the current study, reactor flow characteristics under the balanced four-cold leg flow conditions at each of the cold legs were quantified, which is a part of the test matrix composing the APR+ flow distribution test program. The final identification of the reactor flow distribution was obtained by ensemble averaging 15 independent test data. The details of the design of the test facility, experiment, and data analysis are included in the current paper.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2006.11a
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• pp.420-425
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• 2006

By considering research trend how flow of elderly welfare policy of Japan, which experienced an aging society already, has changed and developed and characteristic of living environment, this study has its purpose to offer basic data to be helpful for finding out direction of Korean future elderly care facility. Way of study worked with only Special Nursing Home and Group Home where elderly with dementia mainly lived among researches of elderly welfare facility published in proceeding of Architecture Planning Engineering of Japan from Jan, 1990 to Sep, 2006. And the number of example of analysis was total 69. The result was classified by year, facilities, and keyword and this study has its focus on discussion of space planning element requested as living environment.

• Journal of the Korean Society of Propulsion Engineers
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• v.18 no.1
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• pp.85-90
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• 2014

To develop liquid propulsion engine, the development of combustion chamber must be preceded. For performance validation of the combustion chamber, the designed and manufactured combustion chamber should be tested in combustion chamber test facility (CCTF). The CCTF is the test facility to develop the combustor of rocket engine, which uses liquid oxygen as a oxidizer and kerosene as a fuel. Present paper introduces the detailed design results of compressed gas supply system of CCTF, which is planned to be installed at Naro Space Center.

• Korean Institute of Interior Design Journal
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• v.17 no.6
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• pp.170-177
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• 2008

This study starts off by stating that the lack of awareness in the importance of reasonable and systematized layout in management facility is essentially working against building a quality public library. And that there is a merit in studying the spatial elements, its density, amount of needed space, and the likes to efficiently deal with present workings of the library which are becoming more dynamic and complicated. This paper seeks to embark on this study and also to provide a foundational data for research on management facility of the public library. The paper bases its research on 10 public libraries which are located in Seoul City and in Gyeonggi province, and are built after the year 2000. The paper focuses on the spatial distribution by section and allotment of management facility space in the library. Consequently, to find solutions or to suggest improvements on problems encountered, the paper introduces Japan's cases (4 recently-built public libraries) as a foreign case study. With foregoing domestic and foreign library case analyses, and the survey results of managerial staffs' demands, the paper seeks to provide basic data about management facility space and its floorplan of the public library. The paper bases its research on pubic libraries' management facilities, and expects to contribute to the efficient building of the public library in the future.