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대한설비관리학회> 대한설비관리학회지> 아파트 화장실 위생설비인 대변기에서 발생한 부유 미생물의 거동에 관한 멀티존 시뮬레이션 연구

KCI후보

아파트 화장실 위생설비인 대변기에서 발생한 부유 미생물의 거동에 관한 멀티존 시뮬레이션 연구

A Study on Multi-zone Simulation Analysis by Transport of the Air-born Pollution from the Toilet Stool in Apartment

이정근 ( Jeong-kun Lee )
  • : 대한설비관리학회
  • : 대한설비관리학회지 24권2호
  • : 연속간행물
  • : 2019년 06월
  • : 35-41(7pages)

DOI


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1. 서 론
2. 본 론
3. 결 론
References

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초록 보기


						
It can be seen that a lot of deeper researches have to be done in that the pollution that occurs in the toilet can propagate through the air. The purpose of this study is to investigate the behavior of contaminated liquid droplets generated by using the toilet in a toilet and to find out the method to prevent the spread of contamination. In this paper, multi-zone simulation was performed to find out the diffusion of contamination and 1its control method. This paper shows evaluation results in order to remove the contamination from the toilet. The fan installed in the toilet should be operated for 30 minutes and it should be operated for at least 90 to 120 minutes for complete removal. Therefore, it was found out that the exhaust fan was turned on for more than 30 minutes to prevent pollution by fixing the habit of simultaneously turning off the lights and the exhaust fan while leaving the toilet after using the toilet.

UCI(KEPA)

간행물정보

  • : 공학분야  > 산업공학
  • : KCI후보
  • :
  • : 계간
  • : 1598-2475
  • :
  • : 학술지
  • : 연속간행물
  • : 1996-2019
  • : 1021


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발행기관 최신논문
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1공급자 선정을 위한 주관적 가중치를 갖는 퍼지 ELECTRE-III 다기준 의사결정 기법의 개발

저자 : 류시욱 ( Si-wook Ryu )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 24권 2호 발행 연도 : 2019 페이지 : pp. 3-12 (10 pages)

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In this paper, among multi-criteria decision making (MCDM) procedures, the ELECTRE(Elimination and (Et) Choice Translating Reality)-III is revised to solve the supplier selection problem where both a criteria evaluation matrix and a decision matrix are linguistically evaluated by a group of decision makers. Final weights are obtained through subjective weights from criteria matrix and weights of the entropy from decision matrix. In addition, the fuzzy theory for dealing with ambiguity of linguistic variables is incorporated to develop the new procedure of the ELECTRE-III.
The proposed procedure is tested through the numerical example which was used in the previous research with the fuzzy TOPSIS (technique for order preference by similarity to ideal solution). The results of the proposed procedure are compared to validate the outranking orders of suppliers. On the other hand, sensitivity analyses for the five cases with different subjective weights are carried to investigate the changes in the outranking orders of suppliers. In conclusion, the fuzzy ELECTRE-III procedure with entropy weights considering subjective judgement seems to be useful in the supplier selection problem.

2실험계획법을 이용한 압출공정의 최적화

저자 : 이상필 ( Sang Phil Lee ) , 권혁무 ( Hyuck Moo Kwon ) , 홍성훈 ( Sung Hoon Hong ) , 이민구 ( Min Koo Lee )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 24권 2호 발행 연도 : 2019 페이지 : pp. 13-21 (9 pages)

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The purpose of this study is to determine the optimum conditions of the extrusion process. Extrusion tube which is the main material of the intravenous set is produced in the extrusion process. In this paper, design of experiments is used to derive the regression model of the tensile strength and the transmittance rate for extrusion tube. The output variables were selected as tensile strength and transmittance rate, the input variables were selected as cylinder temperature, die temperature, lip die temperature and work room temperature. The experiments were conducted as full factorial experiments by 2-level, 4-factors. Through the design of experiments, we have analyzed the main effects and interaction effects of the input variables on the tensile strength and the transmittance rate of the extrusion tube and derived a predictive model. The result was that the tensile strength under the optimal condition was improved by 15% compared to those before improvement.

3고온가스로와 연계한 메탄 수증기 개질 수소생산 공정의 경제성 및 파급효과 추정

저자 : 이태훈 ( Tae-hoon Lee ) , 이주호 ( Ju-ho Lee ) , 조창근 ( Chang-keun Jo )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 24권 2호 발행 연도 : 2019 페이지 : pp. 23-33 (11 pages)

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Hydrogen is an essential element as an energy carrier in the hydrogen economy. In order to mass-produce hydrogen, a High Temperature Gas-cooled Reactor (HTGR) cogeneration system coupled with hydrogen production process and electricity generation has been considered as the most effective method to produce hydrogen. Even if an HTGR cogeneration system is technically capable of supplying a mass amount of hydrogen, it is uncertain that the HTGR cogeneration system can compete with other hydrogen production technologies. Therefore, it is important to evaluate the economic competitiveness of the HTGR cogeneration system. In this paper we developed a process flow diagram for the cogeneration system to maximize hydrogen productivity in Steam Methane Reforming (SMR) hydrogen production processes in conjunction with electrical generation systems in a 350MWt HTGR. Economic analysis and ripple effect estimation were conducted for the self-developed process model using Benefit to Cost ratio (BC ratio) and an inter-industry table. The results of the quantitative analysis show that the HTGR cogeneration system is economically competitive and can be used as basic data for commercial HTGR construction in the future.

4아파트 화장실 위생설비인 대변기에서 발생한 부유 미생물의 거동에 관한 멀티존 시뮬레이션 연구

저자 : 이정근 ( Jeong-kun Lee )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 24권 2호 발행 연도 : 2019 페이지 : pp. 35-41 (7 pages)

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초록보기

It can be seen that a lot of deeper researches have to be done in that the pollution that occurs in the toilet can propagate through the air. The purpose of this study is to investigate the behavior of contaminated liquid droplets generated by using the toilet in a toilet and to find out the method to prevent the spread of contamination. In this paper, multi-zone simulation was performed to find out the diffusion of contamination and 1its control method. This paper shows evaluation results in order to remove the contamination from the toilet. The fan installed in the toilet should be operated for 30 minutes and it should be operated for at least 90 to 120 minutes for complete removal. Therefore, it was found out that the exhaust fan was turned on for more than 30 minutes to prevent pollution by fixing the habit of simultaneously turning off the lights and the exhaust fan while leaving the toilet after using the toilet.

5공조기 가스 사용량 시계열 데이터의 기계 학습적 분석

저자 : 이창용 ( Chang-yong Lee )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 24권 2호 발행 연도 : 2019 페이지 : pp. 43-50 (8 pages)

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In this paper, we propose a recurrent neural network in order to predict the time series of the gas energy consumption in a conditioning equipment. We, in particular, characterize the time series data by using various method and find that the data contain a non-linear correlation. Based on the finding that the time series of the gas consumption contained a considerable amount of the non-linear correlation, we adopt the Elman neural network as a non-linear model for the prediction of the gas consumption. By tuning the parameters in the model, we demonstrate that the proposed model predicted the gas consumption with the relative errors and the average errors less than 1% and 0.5N㎥/h - 3.2N㎥/h respectively. The results of this study can be used to the gas energy management system in terms of the effective control of the conditioning energy in the dry process.

6k-prototypes 군집분석에서 가중치 선택에 관한 연구

저자 : 김정화 ( Jeong Hwa Kim ) , 진서훈 ( Seohoon Jin )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 24권 2호 발행 연도 : 2019 페이지 : pp. 51-58 (8 pages)

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The cluster analysis is an exploratory data analysis process of finding the characteristics of each group by dividing the objects constituting the data into several clusters having similar characteristics. This method maximizes homogeneity within a cluster and maximizes heterogeneity among different clusters. The criterion for selecting the cluster analysis algorithm depends on the attributes of the objects that constitute the data. If the object attributes of the data are a mixture of continuous and categorical types, then k-prototypes algorithm which is hybrid version of k-means algorithm that deals with continuous attributes and k-modes algorithm that deals with categorical attributes can be used. For the use of the k-prototypes clustering method, the weight for the distances calculated in the categorical property should be determined. In this paper, we propose a method to find the weight using the bootstrap method based on stability and investigate the applicability of the proposed method through simulation.

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22권 2호 ~ 22권 3호

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31권 1호 ~ 31권 1호

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21권 4호 ~ 21권 4호

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