Che-Ming Chiang

National Cheng Kung University

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Po-Cheng Chou

National Chung Hsing University

Chia‐Yen Lee

National Pingtung University of Science and Technology

Chia‐Yen Lee

National Cheng Kung University

Chi-Ming Lai

National Cheng Kung University

Kuei‐Feng Chang

Guangdong Polytechnic Normal University

P.C. Chou

National Cheng Kung University

Yen-Yi Li

Shu-Te University

Kwang-Pang Lai

National Cheng Kung University

Fei-Shuo Hung

Southern Taiwan University of Science and Technology

Fei‐Yi Hung

National Cheng Kung University

Cooperative Institutions

National Cheng Kung University

National Taiwan University

National Pingtung University of Science and Technology

National Sun Yat-sen University

National Yang Ming Chiao Tung University

National Taipei University of Technology

National Pingtung University

National Tsing Hua University

The University of Tokyo

National Kaohsiung University of Science and Technology

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Comparison of Different Subgrid-Scale Models of Large Eddy Simulation for Indoor Airflow Modeling

Journal of Fluids Engineering (2001)

Mingde Su Qingyan Chen Che-Ming Chiang

The Smagorinsky subgrid-scale model, a dynamic subgrid-scale model, and a stimulated subgrid-scale model have been used in a large eddy simulation (LES) program to compute airflow in a room. A fast Fourier transformation (FFT) method and a conventional iteration method were used in solving the Poisson equation. The predicted distributions of indoor air velocity, temperature, and contaminant concentrations show that the three subgrid-scale models can produce acceptable results for indoor environment design. The dynamic and stimulated models performed slightly better than the Smagorinsky model. The use of FFT can significantly reduce the computing time. LES is a tool of the next generation of indoor air distribution design.

Large-Eddy Simulation

Scale model

10.1115/1.1378294

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Citations (36)

The Externality of Building Violations in Urban Environment- Empirical Observation in Taiwan

Pong-Kuang Tseng Che-Ming Chiang Hsueh-Yen Hu

Building violations are currently one of the most important building management issues faced by all city and county government building authorities in Taiwan. The existence of widespread building violations in Taiwan may derive from the gap between building usage, which means that a building has been legally constructed in accordance with the Urban Planning Act, the Construction Act, and the Building Code and Regulations, etc., and has obtained legal permits, and building usage, which reflects the user's point of view about reasonable use of the building's space to meet the user's needs. This paper takes cases of building violations in Tainan City as its empirical research subject, and classifies, analyzes, and compares the characteristics and influence of building violations in terms of the dimensions of time and space. Externality theory is used to explore the difference between building usage as prescribed in laws and regulations and building usage in the eyes of users. In addition, a questionnaire survey is used to gain an understanding of residents' spatial use needs and analyze the reasonableness of building spatial management laws and regulations, so that recommendations concerning appropriate building management strategies can be provided. Lastly, the hedonic price method is used to establish a hedonic price model for building violations, which is used to analyze the actual effects of the different building management strategies adopted by government, and provide recommended future management strategies.

Building management

Externality

Building Design

Building code

Empirical Research

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Considering SB environmental assessment tool for the performance of buildings in Taiwan

Hui-Hsiung Huang Che-Ming Chiang Po-Cheng Chou Kuei‐Feng Chang Yi-Chun Kuo

The International Organization for Standardization officially issued ISO 21930 and ISO 15686 standards in 2006, for quantitatively measuring the influence of buildings on environmental performance. SBTOOL is an international assessment tool promoted by the iiSBE, which can be employed to reflect the influence of the different phases of the life cycle of a building on climate, society and economy. Taiwan has been actively implementing the Sustainable Development Policy, and the Architecture and Building Research Institute of Ministry of The Interior has established the “Green Building Evaluation and Labelling System” in 1999 to promote the so -called Green Building. This research takes SBTOOL which is a prevailing sustainable building assessment tool adopted all over the world as the subject of research and carries out a comprehensive analysis on the development trend of international sustainable building..

Green Building

Christian ministry

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The Research of Taiwan Green Building Materials (GBM) system and GBM Eco-Efficiency Model on Climate Change

World Academy of Science, Engineering and Technology, International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering (2012)

Ting-Ting Hsieh Che-Ming Chiang Ming-Chin Ho Kwang-Pang Lai

Green Building

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A MEMS-based Benzene Gas Sensor with WO3 Sensing Layer and Integrated Micro-hotplate

Ming-Tsun Ke Che-Ming Chiang Chia‐Yen Lee

This study develops a MEMS-based benzene gas sensor consisting of a quartz substrate, a thin-film WO3 sensing layer, an integrated Pt micro-hotplate, and Pt interdigitated electrodes (IDEs). When benzene is present in the atmosphere, oxidation occurs on the heated WO3 sensing layer. This causes a change in the electrical conductivity of the WO3 film, and hence changes the resistance between the IDEs. The benzene concentration is then computed from the change in the measured resistance. A specific orientation of the WO3 layer is obtained by optimizing the sputtering process parameters. It is found that the better sensitivity of the gas sensor is at a working temperature of 300℃. At the working temperature, the experimental results show that the sensor has a high degree of sensitivity (9.86 % ppm^(-1)), a rapid response time (40 s), and a quick recovery time (240 s).

Response time

10.29948/jae.200904.0004

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Assessment of volatile organic compounds and particulate matter in a dental clinic and health risks to clinic personnel

Journal of Environmental Science and Health Part A (2015)

Yu‐Jue Hong Yen-Ching Huang I-Long Lee Che-Ming Chiang Chitsan Lin

This study was conducted to assess (1) levels of volatile organic compounds (VOCs) and particulate matter (PM) in a dental clinic in southern Taiwan and (2) dental care personnel's health risks associated with due to chronic exposure to VOCs. An automatic, continuous sampling system and a multi-gas monitor were employed to quantify the air pollutants, along with environmental comfort factors, including temperature, CO2, and relative humidity at six sampling sites in the clinic over eight days. Specific VOC compounds were identified and their concentrations were quantified. Both non-carcinogenic and carcinogenic VOC compounds were assessed based on the US Environmental Protection Agency's Principles of Health Risk Assessment in terms of whether those indoor air pollutants increased health risks for the full-time dental care professionals at the clinic. Increased levels of VOCs were recorded during business hours and exceeded limits recommended by the Taiwan Environmental Protection Agency. A total of 68 VOC compounds were identified in the study area. Methylene methacrylate (2.8 ppm) and acetone (0.176 ppm) were the only two non-carcinogenic compounds that posed increased risks for human health, yielding hazard indexes of 16.4 and 4.1, respectively. None of the carcinogenic compounds increased cancer risk. All detected PM10 levels ranged from 20 to 150 μg/m(3), which met the Taiwan EPA and international limits. The average PM10 level during business hours was significantly higher than that during non-business hours (P = 0.04). Improved ventilation capacity in the air conditioning system was recommended to reduce VOCs and PM levels.

Health Risk Assessment

Health hazard

10.1080/10934529.2015.1055129

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Citations (27)

Crystallization and annealing effects of sputtered tin alloy films on electromagnetic interference shielding

Applied Surface Science (2010)

Fei-Shuo Hung Fei‐Yi Hung Che-Ming Chiang

Shielding effect

10.1016/j.apsusc.2010.11.126

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Citations (32)

Field Survey on the Relation between IAQ and Occupants' Health in 40 Houses in Southern Taiwan

Journal of Asian Architecture and Building Engineering (2011)

Lin-Lin Huang Koichi Ikeda Che-Ming Chiang Naoki Kagi S. Hojo

AbstractAbstractTaiwan and Japan are similar in life style and customs. Taiwan is geographically situated in a subtropical climate zone which is deemed as a future model of Japanese climate if global warming continues. It is therefore advantageous for Japanese to know the present IAQ (Indoor Air Quality) situations in Taiwan.The research was carried out in two phases. The first phase used questionnaire surveys to collect the relevant information of the occupants and their living environments, and QEESI questionnaires (Chinese version) for information regarding their health conditions. In the second phase, IAQ measurements were conducted in the 40 houses which were selected among volunteers of the first survey. Measurement items were temperature, humidity and concentrations of carbonyl compounds and VOCs (Volatile Organic Compounds). Verification measurements were conducted to investigate the hypothesis in the two houses, A and B, selected from 40 measured houses. The amount of furnishing materials in the two houses was quite different.Finally, the questionnaire results, QEESI (Quick Exposure Sensitivity Inventory) scores, and IAQ data were compared accordingly to determine the factors that cause SHS (Sick House Syndrome). The results are as follows.1. For areas deficient in SHS and/or MCS (Multiple Chemical Sensitivity) diagnoses, combining QEESI investigations and IAQ measurements in the surveys is successful in screening SH and discovering SHS.2. To reduce indoor air pollution effectively, it is insufficient just to regulate the materials and the quantity of interior furnishings. Construction process, ventilation rate, airflow path, and an overall plan with strict assessment should all be included in the regulations.sick house syndromefield surveyIAQoccupant's healthsouthern Taiwan

Sick Building Syndrome

Questionnaire

Field survey

10.3130/jaabe.10.249

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Citations (18)

Solar Orientation Measurement Systems with Integrated Solar Cells

The Open Construction and Building Technology Journal (2008)

Che-Ming Chiang Chia‐Yen Lee Wen-Jen Hwang Po-Cheng Chou

This paper presents a novel solar orientation measurement system based on solar cells. A methodology for calculating the solar orientation is developed in which the time and latitude angles of the sun are determined from the measured output voltages of inclined solar cells. Three types of measurement system are considered, namely a single cell type, a double cell type, and a quadrantal cell type. The relationship between the measured output voltages of the solar cells and the solar position is fully explored and documented for each measurement system. In the quadrantal measurement system, a variation in the time angle or latitude angle of the sun generates a corresponding change in the comparative output voltages of the East-West (E-W) or South-North (S-N) solar cells, respectively. By inclining the solar cells at an angle of 45 degrees, it is found that the comparative voltage ratio is sufficiently large that the time and latitude angles can be accurately predicted. The proposed measurement system provides a valuable contribution to the on-going development of tracking systems in the solar energy technology field.

Solar tracker

10.2174/1874836800802010280

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Citations (2)

CFD Prediction on the Building Airflow Structure (II): Effects of Grid Systems and Turbulent Models

C.H. Tsai Chae-Rin Lee P.C. Chou Che-Ming Chiang Feihao Wu

Grid system

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