| Summary: | 博士 === 國立臺灣科技大學 === 營建工程系 === 103 === Under the context of increasingly research exploring global warming, energy conservation, and carbon reduction, this study investigated the use of renewable energy sources, such as solar power and net zero-energy buildings. In addition, the characteristics of building-integrated photovoltaic(BIPV) modules and the related functions were analyzed, and compared with those of heat-insulation solar glass(HISG) and transparent photovoltaic(PV) modules. In addition to electricity generation, HISG provides other functions, such as heat insulation, energy conservation, self-cleaning, and safety.
This study adopted the theme of the Development and Applications of Heat Insulation Solar Glass by focusing on HISG modules and dividing the research scope into six items: (1)research and development on HISG; (2)performance assessment of HISG materials; (3)application of HISG technologies in buildings; (4) simulation software for assessing HISG electricity generation and energy conservation in buildings; (5) safety assessment of HISG buildings; and (6) specific framework designs.
(1)Regarding the research and development on HISG, this study discusses about the materials, structures, manufacturing processes, and functional principles of HISG.
(2)Regarding the performance assessment of HISG materials, this study investigated the related functions of HISG devices composed of diverse materials. The results indicated that each function of the transparent PV module varies after being packaged into HISG. HISG package techniques can be used to improve the electricity-generation capacity of transparent PV modules, in which Tandem-A HISGs were markedly improved by approximately 10.06% and module efficiency was improved by approximately 0.82%. Regarding optical performance and thermal performance, through HISG package technique, visible light transmittance decreased slightly, whereas solar radiation transmittance, shading coefficient, and U value decreased considerably. Thus, excellent heat insulation performance, excellent thermal retention performance, and a 100%ultraviolet resistance were yielded. The self-cleaning performance of nanocatalyst can delay outdoor module surface pollution time for approximately two folds.
(3)Regarding the application assessment of HISG buildings, this study conducted various tests to evaluate an HISG curtain wall building and general curtain wall building. The results show that compared to using general glass, HISG reduced the energy consumption of air conditioners by 50% during summer and that of heaters by 43.4% during spring. Luminous and thermal environment tests revealed that HISG insulated against 99% of radiant heat and ultraviolet energy by 100% on; in addition, HISG can maintain an adequate level of indoor lighting and improve night lighting by 27.5%.
(4)Regarding the simulation software assessment of HISG electricity generation and energy conservation for buildings, this study established a simple building model by using electricity generation and energy efficiency software. Moreover, the electricity generation and air conditioning energy consumption performance of simple HISG buildings fitted with various materials was explored using computer software. Because transparent PV modules can improve electricity-generation capacity, heat insulation, and thermal retention after being packaged into HISG, the electricity generation of the overall system was improved and by up to 10.42%. Compared to transparent PV modules, the overall power consumed by air conditioners was decreased by up to 30%. Regarding the economic assessment of electricity generation from and air conditioning conservation by general buildings, the recovery period of HISG in both Taipei and Tainan was approximately 8–10 years compared to that of general glass.
(5)Regarding the safety assessment of HISG buildings, the research results indicated that HISG can repeatedly withstand static loads of 2400 pa and 5400 pa, positive and negative wind pressure of 9500 pa and 8000 pa, and the fire rating for over 20 minutes.
(6)Regarding the specific framework design of HISG, this study designed a specific HISG framework according to various building application types: conventional light absorption shade, unitized light absorption shade, conventional curtain wall framework, point supported glass spider fittings, and replacement window frames.
The results indicated that compared to transparent PV module, HISG possesses performances such as electricity generation, heat insulation, energy conservation, and self-cleaning and can replace general glass materials for energy conservation purposes. In addition, HISG exhibits better safety performance compared with conventional glass materials and can resist various changes in environmental conditions; thus, HISG usage can protect internal safety. HISG framework was designed exclusively for practical building applications.
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