Analysis of Incorporating a Phase Change Material in a Roof for the Thermal Management of School Buildings in Hot-Humid Climates

Hwang, Ruey-Lung; Chen, Bilian; Chen, Wei-An

doi:10.3390/buildings11060248

Cited by 10 publications

(8 citation statements)

References 38 publications

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“…The use of environmentally friendly materials has emerged as an important discourse among researchers and stakeholders, and the overall quality of design and planning must be considered in efforts to protect and improve school environment quality [57]. Hwang et al [58] proposed using energy-saving materials and room thermal comfort on the roofs of school buildings in Taiwan. Playgrounds are integrated into campus facilities to shape and develop student character, discipline, and morality [59], and must be improved in the school design phase.…”

Section: Discussionmentioning

confidence: 99%

Improving School Reconstruction Projects Satisfaction Outcomes Using Fuzzy Quality Function Deployment (FQFD)

et al. 2023

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School buildings and facilities constitute essential educational infrastructure and have a formative impact on the safety, development, and socialization of students. However, many existing school buildings are increasingly aging and deteriorating, requiring urgent refurbishment, raising the need to assess and develop a quality function to propose strategies for improved school building reconstruction. Apart from the initial planning phase, the reconstruction design process usually requires detailed information regarding owner/user demands and is often presented in terms of user dissatisfaction. This paper applies fuzzy quality function deployment (FQFD) to transform actual user needs into an improved technical strategy that can be realized by the design unit through the sequence of the matrix method. The resulting framework identifies a total of eight major components of user dissatisfaction, along with three key school-design improvement strategies, including the use of environmentally sound materials, overall quality of design and planning, and playground planning. In terms of technology improvement strategies, the prioritized design improvement strategies for increasing school reconstruction satisfaction include considerations of practicality and constructability, planning use points and maintenance methods, designing the site according to the local terrain, and using materials that match the layout of the environment. The approach proposed in this study can be used to enhance the efficiency of the reconstruction of aging buildings and the research results can also augment ontological knowledge on the reconstruction of aging campus buildings.

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Section: Discussionmentioning

confidence: 99%

Improving School Reconstruction Projects Satisfaction Outcomes Using Fuzzy Quality Function Deployment (FQFD)

et al. 2023

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“…Moreover, the overall efficacy of PCM in hot and humid climates is equally unclear [47]. Apart from these, there is no evidence of standard thickness of PCM's layer to optimize the thermal comfort inside a building in different climate zones [48]. Although some previous studies suggest that during the phase transition, a large amount of heat is absorbed and released by PCM, a phase change takes place in a specific temperature range rather than immediately at one temperature, for example, the specific heat capacity of PCM when used as a function of temperature [49].…”

Section: Thermal Comfortmentioning

confidence: 99%

Performance Evaluation of Phase Change Materials to Reduce the Cooling Load of Buildings in a Tropical Climate

Sangwan

Mehdizadeh‐Rad

et al. 2022

Sustainability

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Tropical region such as Darwin has similar weather patterns throughout the year, thus creating higher energy demands in residential buildings. Typically, buildings consume about 40 per cent of the total energy consumption for indoor heating and cooling. Therefore, building envelopes are linked with design strategies such as the use of thermal energy storage and phase change materials (PCM) to minimize this energy consumption by storing a large amount of thermal energy. Primarily, PCMs are targeted by researchers for use in different components of buildings for thermal efficiency; thus, this study aimed to provide a suitable PCM to optimize indoor thermal comfort and minimize the cooling loads of residential buildings in tropical climates through simulation of a tropical climate building and provide optimum thickness for the selected material. Microencapsulated PCM mixed with gypsum in wallboards were used to reduce the cooling load of a building located in Darwin. The cooling load of the building was calculated using Revit software. A comparison of the cooling load of the building was carried out using PCM-incorporated wallboards of thicknesses of 0 cm, 1 cm and 2 cm in Energy Plus software. The total cooling load decreased by 1.1% when the 1-centimetre-thickness was applied to the wall, whereas a 1.5% reduction was obtained when a 2-centimetre-thick PCM layer was applied. Furthermore, the reduced cooling loads due to impregnation of the PCM-based gypsum wallboard gave reduced energy consumption. Ultimately, the 2-centimetre-thickness PCM-based gypsum wallboard gave a maximum reduction in cooling load with a 7.6% reduction in total site energy and 4.76% energy saving in USD/m2/year.

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“…The integration of a suitable PCM in a building component, for example, in a mortar or in a plaster, can limit the indoor temperature variations regardless of the external conditions, ensuring human comfort along with a reduced energy consumption. In recent years, various PCMs have been developed and tested [5][6][7]. It is possible, therefore, to select the most appropriate system based on the purpose and specific application [8,9].…”

Section: Introductionmentioning

confidence: 99%

Development and Performance of Eco-Sustainable Form-Stable Phase Change Materials (PCMs) for Mortars to Be Applied in Buildings Located in Different Climatic Areas

2023

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The growing concern for the environment and the depletion of raw materials such as fossil fuels is driving research towards the exploitation of new materials and the development of new technologies. Phase-change materials (PCMs) are increasingly used to reduce the energy required for the heating/cooling of buildings. The biggest challenge is to find a PCM with suitable characteristics able to meet the needs of the different climates in which it is placed. The originality of our research, therefore, lies in the possibility of selecting the most appropriate polymer to produce a PCM suitable for different climatic conditions that characterize the area in which a building is located. Furthermore, the proposed form-stable PCMs were obtained by including low-toxic, low-flammability polymers in waste stone fragments, according to the principles of a circular economy. These original sustainable PCMs were then used as aggregates by adding them to mortars (based on air lime, hydraulic lime, cement and gypsum). The mortars containing the PCMs were analyzed in fresh (workability) and hardened (flexural and compressive strengths and thermal characteristics) states. The results obtained showed that although the inclusion of PCM reduced the mechanical properties of the mortars, good mechanical properties can be still achieved by using an adequate binder content. The produced mortars were also analyzed by thermal analysis to assess how the addition of a PEG-based PCM affected their thermal behavior. The original PCMs were proven to be effective in improving the indoor temperature when included in mortars applied as plasters.

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Analysis of Incorporating a Phase Change Material in a Roof for the Thermal Management of School Buildings in Hot-Humid Climates

Cited by 10 publications

References 38 publications

Improving School Reconstruction Projects Satisfaction Outcomes Using Fuzzy Quality Function Deployment (FQFD)

Improving School Reconstruction Projects Satisfaction Outcomes Using Fuzzy Quality Function Deployment (FQFD)

Performance Evaluation of Phase Change Materials to Reduce the Cooling Load of Buildings in a Tropical Climate

Development and Performance of Eco-Sustainable Form-Stable Phase Change Materials (PCMs) for Mortars to Be Applied in Buildings Located in Different Climatic Areas

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