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Uncertainty analysis of annual daylight metrics and energy yield weighting factors in optimising photovoltaic window orientation

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SOLAR ENERGY 2023年第1期262卷

作者： Jamala, Nurul Mangkuto, Rizki A. Paramita, Beta Hasanuddin Univ Fac Engn Dept Architecture Jl Poros Malino Km 6 Gowa 92171 Indonesia Inst Teknol Bandung Fac Ind Technol Bldg Phys Res Grp Jl Ganesha 10Labtek 6 Bandung 40132 Indonesia Univ Pendidikan Indonesia Fac Technol & Vocat Educ Architecture Study Program Jl Dr Setiabudhi 229 Bandung 40152 Indonesia

Application of semi-transparent photovoltaic (PV) windows in buildings has now become an emerging trend towards sustainable design practice. Such application requires a careful thought on finding the optimum window orientation. From the perspective of energy generation, equator-facing orientation is the best option. However, such orientation may lead to glare and visual discomfort. To solve this problem, optimisation is required, but the outcome often depends on the weighting factors of each metric considered. This study therefore aims to quantify the uncertainty of weighting factors in optimising PV window orientation, by considering various annual daylight metrics and energy yield. Computational modelling and simulation using Rhinoceros and Grasshopper were performed for a building prototype with a single, semi-transparent monocrystalline PV window, under the climate of Gowa, Indonesia (5.2 degrees S). Weighting factor for each metric was randomised using Monte Carlo simulation for 1000 scenarios, and the uncertainty were analysed. When all metrics are considered, on average, the South orientation appears as the best orientation in 73% of the cases, followed by East (24%) and North (3%). When a single metric is assigned to each metric group, the South orientation still appears as the best orientation in 62% of the cases.

关键词： Photovoltaic window Orientation Energy yield Weighting factor Uncertainty analysis

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Building Facade Transformation of Shophouses Viewed From Sustainability Principles Case study: Shophouses in Bandung City

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IOP Conference Series: Earth and Environmental Science 2018年第1期152卷

作者： Tika Novis Putri Boedi Darma Sidi Marlisa Rahmi Samsirina Architecture Study Program Institut Teknologi Bandung Indonesia

This study is based on phenomenon of shophouse's facade transformation in cities which is made after shophouses are built for business identity. Viewed from sustainability perspective where 'sustainability' is defined as able to maintain continuation with minimal long-term effect on the environment—the changes on shophouses building façade materials is indicated as energy wasting problems. The study was conducted in Bandung, Indonesia. The first part of this study is intended to draw typology out of the quantity changes of building facade and to trace the driving factors for its typology. The Conclusion of this study shows a high requirement for facade transformation which is categorized as Minor, Medium and Major changes that forced by inadequacy of the original design in representing the accommodated function, activities or products. The next part of the study aims to provide several recommendations and innovative solution to prevent excessive use of building materials as well as energy waste that goes against sustainability principles.

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Tolerance Levels of Roadside Trees to Air Pollutants Based on Relative Growth Rate and Air Pollution Tolerance Index

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HAYATI Journal of Biosciences 2008年第3期15卷 123-129页

作者： SULISTIJORINI NASRULLAH, NIZAR BEY, AHMAD TJITROSEMITO, SOEKISMAN Study Program of Natural Resources and Environmental Management Bogor Agricultural University Darmaga Campus Bogor 16680 Indonesia Department of Chemistry Bogor Agricultural University Darmaga Campus Bogor 16680 Indonesia Department of Landscape Architecture Bogor Agricultural University Darmaga Campus Bogor 16680 Indonesia Department of Geophysics and Meteorology Bogor Agricultural University Darmaga Campus Bogor 16680 Indonesia Department of Biology Bogor Agricultural University Darmaga Campus Bogor 16680 Indonesia

Motor vehicles release carbon monoxide, nitrogen dioxide, sulphur dioxide, and particulate matters to the air as pollutants. Vegetation can absorb these pollutants through gas exchange processes. The objective of this study was to examine the combination of the relative growth rate (RGR) and physiological responses in determining tolerance levels of plant species to air pollutants. Physiological responses were calculated as air pollution tolerance index (APTI). Eight roadside tree species were placed at polluted (Jagorawi highway) and unpolluted (Sindangbarang field) area. Growth and physiological parameters of the trees were recorded, including plant height, leaf area, total ascorbate, total chlorophyll, leaf-extract pH, and relative water content. Scoring criteria for the combination of RGR and APTI method was given based on means of the two areas based on two-sample t test. Based on the total score of RGR and APTI, Lagerstroemia speciosa was categorized as a tolerant species;and Pterocarpus indicus, Delonix regia, Swietenia macrophylla were categorized as moderately tolerant species. Gmelina arborea, Cinnamomum burmanii, and Mimusops elengi were categorized as intermediate tolerant species. Lagerstroemia speciosa could be potentially used as roadside tree. The combination of RGR and APTI value was better to determinate tolerance level of plant to air pollutant than merely APTI method. © 2008 Institut Pertanian Bogor

关键词： air pollutants air pollution tolerance index physiological responses relative growth rate tolerance of roadside trees

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Thermal Comfort Of The Outdoor Transition Space In the Dean's Office Building

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IOP Conference Series: Earth and Environmental Science 2021年第1期738卷

作者： Panji Anom Ramawangsa Atik Prihatiningrum Debby Seftyarizki Architecture Program Study University of Bengkulu Bengkulu Indonesia

The increase in the transmission of the COVID-19 disease, creating an effort to prevent transmission by controlling total of space users in the Dean's Office Building, University of Bengkulu to avoid overcrowding users of space in buildings. The control has an impact on the increasing number of space users in the transition space of outdoor (terraces, hallways, corridors) in the eight Dean's Office Buildings. The thermal comfort of the outdoor transition space needs to be considered because the post-pandemic adaptation behavior causes the change in the function of the transition area as buffer between outdoor and indoor spaces, is currently becoming a waiting room for entering buildings with uncertain waiting times. In addition, University of Bengkulu is located in coastal area with air temperatures during the day between 30 °C- 34 °C and wind speed ranging from 0-2,2 m/s. The purpose of this research is to determine the perception of thermal comfort of space users in the transition space, Dean's Office Building, University of Bengkulu. Measurement data in the form of air temperature, air humidity, and wind speed at the peak of the dry month were carried out at 08.00-16.00 for 10 working days and interview data on the perception of thermal comfort of space users. Interview and measurement data will be inputted on the Ray-man measuring instrument to obtain the PET, PMV, SET values.

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The spectrum of city park service scope: case study of Lapangan Puputan Badung and Lapangan Puputan Margarana Denpasar-Bali

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IOP Conference Series: Earth and Environmental Science 2019年第1期396卷

作者： N Kohdrata G A M Suartika A A K Krisnandika L S Yusiana I M A Dharmadiatmika Landscape Architecture Study Program Faculty of Agriculture Udayana University Bali Indonesia Architecture Study Program Faculty of Engineering Udayana University Bali Indonesia

This research aims to find the spectrum of a park service scope from two city parks in Denpasar, a densely populated city. The city parks in study are Lapangan Puputan Badung and Lapangan Puputan Margarana as city public facilities of Denpasar – Bali that is said to improve citizen quality of life and environment as well. However, this research focuses to see how city parks in Bali serve their users. This study uses a survey research method. Sample of respondents are chosen using accidental sampling technique with questionnaire as media of data collection. Data series include, users' age, frequency of visit, activities, and domicile. Research findings are analysed spatially and descriptively as well. Result shows that most visitors are young people who spend time mostly for exercising and other recreational activities. It is also interesting to see that both city park users are regular visitors. They visit the parks at least 1 to 2 time per week and spend 1 to 2 hours in there. The parks users mostly come from densely populated areas. That shows the importance of city parks as complement to a city. However, as a city that going to smart city, ICT has not been recognized much. As conclusion, the spectrum of city parks service scope of Denpasar still ranging in traditional functions of public green open space. A city park serves a man-made nature-like place for people to get refresh within an urban landscape setting.

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Flexural Strength Test For Concrete Beam With Mild Steel and Reinforcing Iron

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IOP Conference Series: Materials Science and Engineering 2019年第1期676卷

作者： M Z Umar A Faslih Architecture Study Program Vocational Education Program Haluoleo University Kendari Indonesia

Mild steel in buildings tends to only be used as a roof frame. The phenomenon in the field that lightweight steel roof truss can be combined with mortar mixture. In general this union is found on the walls of the construction of the red stone horses. This phenomenon is captured and applied dynamically, creatively, and innovatively with new idioms. Mild steel can be used as a beam reinforcement. This research is important in order to find alternative reinforcement of beams other than iron and strong beam reinforcement. This study aims to determine the ratio of flexural strength between concrete from mild steel reinforcement and concrete from steel reinforcement. This study uses a concrete flexural strength test and simple test beam method. The test beam is loaded and centered directly. Press testing machine is used as a flexural test device. The machine is equipped with two support beams and one load beam, load construction, and support blocks. Six beams are used as specimens. Test objects are made of different reinforcement. Concrete beams are made from a cross section of 600 mm x 150 mm x 150 mm, used reinforcing iron diameter of 6 mm, and amounting to three (first test object). Concrete beams are made from a cross section of 600 mm x 150 mm x 150 mm, mild steel is used with the profile shape C73.35.10 mm, and there are three pieces (second test object). This study concluded that the test beam was made from a cross section of 600 mm x 150 mm x 150 mm. and mild steel (profile C73.35.10 mm) has twice the maximum flexural strength compared to 600 mm x 150 mm x 150 mm cross section beam and reinforcing iron (6 mm diameter).

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study of motion comfort on the roof slope to optimize urban farming

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IOP Conference Series: Earth and Environmental Science 2021年第1期780卷

作者： J Widhita E Winansih E L Wahjutami Student of Architecture Magister Study Program at University of Merdeka Malang Malang Indonesia Lecturer of Architecture Magister Study Program at University of Merdeka Malang Malang Indonesia

One of the efforts of urban food problems can be resolved by urban farming activities with green roofs application on sloping roofs in crowded settlement. The study aims to know the body movements comfort in the planting activity on the green roof for productive plants with a case study of sloping roofs using simulation. This study is an experimental research by using simulation methods. The experimental variables in this study were height, sex and the range of the planting process. The simulation research uses a growing media module which is placed at an angle of 15 degrees and 30 degrees. The obtained data tested T test method to find the differences level of male and female respondents data. After the T test, a simple regression test was performed to determine the effect of the respondent's height on the range of the planting process. T test results show that male and female data in each module with slopes 15 degrees and 30 degrees have different results. ANOVA test regression analysis results showed a significant influence between height and distance of planting range in male respondents was 47.5 percent in the 15 degrees module and 49.02 percent in the 30 degrees module, while in the female respondents had a 31.64 percent result at modules 15 degrees and 54.44 percent in the 30 degrees module. The results of both data (male and female) showed that the slope of 30 degrees is more comfortable than the slope of 15 degrees.

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study of occupants' perceptions and preferences of smart home system technology at The Eastern Green-LRT City Bekasi Apartment

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IOP Conference Series: Earth and Environmental Science 2021年第1期878卷

作者： U Ulinata Architecture Study Program Universitas Kristen Indonesia Jakarta Indonesia

The development of technology over the time is increasing rapidly in various fields including in the field of property that applies smart home system. During the Covid 19 Pandemic, residential with smart home system concept deserves to be an option because it can provide convenience for residents in activities and work by arranging electronic devices such as air conditioning, televisions, lights, access in and out of residence. One of them is The Eastern Green LRT City Bekasi Apartment which is a residence with the concept of smart home system. Apart from the purpose of knowing perception and preference of residents to smart home system in Eastern Green-LRT City Bekasi Apartment, there are certainly still weaknesses that are also a consideration for improvement so that smart home system is able to facilitate residents to improve the comfort of residents. This research uses quantitative method by collecting data through survey. The results showed there are several things that need to be useful evaluation materials to improve smart home system. It is expected that this article can provide feedback to realize a more comfortable residence based on smart home system in welcoming the era of society 5.0 and the new normal era.

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Open space function in plaza area in Central Java Great Mosque

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IOP Conference Series: Earth and Environmental Science 2021年第1期623卷

作者： A M Hamdani A Suprapti R S Rukayah Doctoral Study Program of Architecture and Urban Sciences Universitas Diponegoro

The plaza area at the Great Mosque of Central Java is a non-green open space of the Central Java Grand Mosque building complex. The Plaza area has an important role in the building, because the plaza area at the mosque is the first place we meet, and becomes the center of circulation and socio-religious activities for visitors. Thus, it is necessary to design a plaza area at the Grand Mosque of Central Java which considers all aspects. Open space has a role as a container that can accommodate certain activities of the community in certain areas, therefore open space has a contribution to be given to humans in the form of positive impacts. This research was conducted at the Grand Mosque of Central Java using qualitative-descriptive methods. This research focuses on studies in the plaza area of the Grand Mosque of Central Java in terms of open space functions. The results of this study, in the plaza area at the Great Mosque of Central Java, show that it has not fulfilled both as a general function of open space and an ecological function.

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Identification of changes in the morphological space structure of Bandar Lampung City using overlay geographic information system analysis

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IOP Conference Series: Earth and Environmental Science 2021年第1期739卷

作者： A B Ghazi H A Fitra Citra Persada Urban and Regional Planning Study Program Department of Infrastructure and Regional Technology Institut Teknologi Sumatera Architecture Study Program Department of Architecture Faculty of Engineering University of Lampung

Cities are developing due to population growth, socio-economic structure changes, technology and spatial interaction with its surroundings. 'Bagian Wilayah Kota (BWK) C' or so-called 'urban zone C' of Bandar Lampung municipality comprising districts of Sukarame, Tanjung Senang, and Way Halim is currently growing both internally and externally due to the development of Trans-Sumatera highway and Institute Teknologi Sumatera (ITERA). The dynamics of development and activities have caused a growing physical urban space, affecting the changes of urban structure directly. The current development in BWK C has been considered as unmanageable and potentially caused some problems in spatial plan in the future. To prevent the chaotic of spatial plan in the future, this study aims to identify the changes of urban structure in BWK C of Bandar Lampung municipality due to the internal and external development of its area. This study benefits in providing comprehensive standpoints about the process of urban structure changes based on urban activities so that city government could gain a systematic discourse of urban development which advantages in policymaking for spatial development in Bandar Lampung municipality in the future. This study conducted several analytical methods ranging from comparative analysis, spatial analysis, and hierarchical centrality index analysis. For data collection, this study applied secondary data survey and field work observation, using data from 2010 to 2016. The findings of this study reveal that the physical development in BWK C is getting compacted as its morphology changed from ribbon shaped city to octopus shaped city.

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