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    Partial shading effects of surrounding obstacle parameters on building integrated photovoltaic (BIPV) system efficiency in Thailand
    (2018-01-01)
    Somboonwit, Nuttasit
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    This study aims to explore the comparative effects between Obstacle’s Distance and Obstacle’s Orientation parameters that cause partial shading effect (PSE) and influence the potential solar power generation of a building integrated photovoltaic (BIPV) system. An automatic collaboration between Building Information Modelling (BIM) software and a cloud-based building performance analysis tool were used to simulate the annual cumulative insolation obtained from rooftop BIPV surfaces of sixteen different Obstacle’s Orientations and forty-three different distances between the BIPV and building obstacles—Obstacle’s Distance. The case study are two axis-aligned public healthcare buildings; an outpatient department (OPD) building and a ward building that are widely established throughout Thailand. This study also explores the notion that Obstacle’s Orientation and Obstacle’s Distance of a surrounding obstacle are both important parameters that influence the annual cumulative insolation of PV surfaces but in the different contexts. The findings of this study also support decision making for BIPV designers and planners to select which the BIPV and the obstacle placement is highly effective, especially BIPV application on lower-rise buildings in dense urban environments, such as healthcare facilities.
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    Prioritizing Factors for Electrocoagulation in Hospital Wastewater Treatment Using AHP: A Case Study of Regional Hospitals in Thailand
    (2026-01-01)
    Kaochim, Tanat
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    Hospitals are significant contributors to a large amount of complex wastewater, into domestic wastewater and municipal sewer. Hospital wastewater (HWW) can contain both infectious and non-infectious contaminants, such as radioactive materials from cancer treatment, heavy metal contamination from science laboratory work, and pharmaceutical chemicals. Currently, hospitals in developing countries often have a high service density, generating and increasing large amounts of wastewater daily. Electrocoagulation (EC) is an effective electrochemical approach for treating specific types of polluted wastewater, particularly those contaminated by infectious pathogens, which require daily treatment. This study applied the Analytic Hierarchy Process (AHP) to prioritize factors influencing the adoption of the EC method for hospital wastewater treatment (HWWT), using the Central Hospital under the Ministry of Public Health in Thailand as a case study. The findings indicated that area requirement was the most important factor, followed by operational expenditure (OPEX). The factor weightings derived from this study provide evidence-based guidance to support decision-makers in adopting EC systems for hospital wastewater treatment.
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    Delphi-Based Identification of Decision Factors for Electrocoagulation Adoption in Regional Hospital Wastewater Treatment
    (2026-01-01)
    Kaochim, Tanat
    ;
    The hospital conducts a wide range of activities and generates a massive amount of effluent daily, especially in hospitals in developing countries. The higher the service density they provide, the larger the amount of wastewater they generate, which contains both infectious and non-infectious contaminants, such as radioactive materials, heavy metals, and pharmaceutical chemicals. This research aimed to identify the factors that influence the decisions to adopt the electrocoagulation (EC) method for hospital wastewater treatment (HWWT) in the regional hospitals under the Ministry of Public Health in Thailand. The Delphi technique was used to identify expert-consensus factors through four rounds of surveys. The final result of this research revealed four factors achieving unanimous consensus: (1) area requirement, (2) operational flexibility, (3) Operational Expenditure, and (4) environmental friendliness. The findings of this research are expected to support efficient decision-making when considering the use of EC treatment systems for hospital wastewater treatment, particularly tailored to the needs of regional hospitals in Thailand.