湿热气候条件下的绿色建筑适应性:椰子和玉米皮纤维复合砖作为节能建筑围护结构的评估

IF 2.1 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
Obed Ofori Yemoh, Richard Opoku, Gabriel Takyi, Ernest Kwadwo Adomako, F. Uba, G. Obeng
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引用次数: 0

摘要

设计/方法/途径制作了椰子纤维(椰壳)和玉米皮纤维砖样品,并使用瞬态平面源(TPS)2500s 仪器测试了它们的热物理性能。研究结果发现,生物基复合材料建筑围护结构的时滞范围为:100 毫米厚的砖块为 4.2-4.6 小时,200 毫米厚的砖块为 10.64-11.5 小时。同时还确定了递减因子在 0.87-0.88 之间。生物基复合材料建筑围护结构能够将模型的室内温度保持在 25.4 ℃ 至 27.4 ℃ 之间,在室外温度变化的情况下仍能提供非常稳定的室内热舒适度。24 小时内的温度变化非常稳定,大约 8 小时后温度才会上升一度,为居住者提供了舒适的室内温度,无需依赖空气条件和其他机械制冷方式。这项研究的结果为建筑开发商和工程师提供了机会,使他们可以选择本地材料作为建筑围护结构,以适应绿色建筑、节约能源、降低建筑成本并创造就业机会。 原创性/价值 这项研究首次提出了生物基复合材料建筑围护结构的时滞和递减因子,以适应加纳的炎热气候条件下的绿色建筑。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Green building adaptation in hot-humid climates: assessment of coconut and corn husk fiber composite bricks as energy-efficient building envelopes
PurposeThis study has assessed the thermal performance of locally fabricated bio-based building envelopes made of coconut and corn husk composite bricks to reduce building wall heat transmission load and energy consumption towards green building adaptation.Design/methodology/approachSamples of coconut fiber (coir) and corn husk fiber bricks were fabricated and tested for their thermophysical properties using the Transient Plane Source (TPS) 2500s instrument. A simulation was conducted using Dynamic Energy Response of Building - Lunds Tekniska Hogskola (DEROB-LTH) to determine indoor temperature variation over 24 h. The time lag and decrement factor, two important parameters in evaluating building envelopes, were also determined.FindingsThe time lag of the bio-based composite building envelope was found to be in the range of 4.2–4.6 h for 100 mm thickness block and 10.64–11.5 h for 200 mm thickness block. The decrement factor was also determined to be in the range of 0.87–0.88. The bio-based composite building envelopes were able to maintain the indoor temperature of the model from 25.4 to 27.4 °C, providing a closely stable indoor thermal comfort despite varying outdoor temperatures. The temperature variation in 24 h, was very stable for about 8 h before a degree increment, providing a comfortable indoor temperature for occupants and the need not to rely on air conditions and other mechanical forms of cooling. Potential energy savings also peaked at 529.14 kWh per year.Practical implicationsThe findings of this study present opportunities to building developers and engineers in terms of selecting vernacular materials for building envelopes towards green building adaptation, energy savings, reduced construction costs and job creation.Originality/valueThis study presents for the first time, time lag and decrement factor for bio-based composite building envelopes for green building adaptation in hot climates, as found in Ghana.
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来源期刊
CiteScore
4.80
自引率
18.20%
发文量
76
期刊介绍: The International Journal of Building Pathology and Adaptation publishes findings on contemporary and original research towards sustaining, maintaining and managing existing buildings. The journal provides an interdisciplinary approach to the study of buildings, their performance and adaptation in order to develop appropriate technical and management solutions. This requires an holistic understanding of the complex interactions between the materials, components, occupants, design and environment, demanding the application and development of methodologies for diagnosis, prognosis and treatment in this multidisciplinary area. With rapid technological developments, a changing climate and more extreme weather, coupled with developing societal demands, the challenges to the professions responsible are complex and varied; solutions need to be rigorously researched and tested to navigate the dynamic context in which today''s buildings are to be sustained. Within this context, the scope and coverage of the journal incorporates the following indicative topics: • Behavioural and human responses • Building defects and prognosis • Building adaptation and retrofit • Building conservation and restoration • Building Information Modelling (BIM) • Building and planning regulations and legislation • Building technology • Conflict avoidance, management and disputes resolution • Digital information and communication technologies • Education and training • Environmental performance • Energy management • Health, safety and welfare issues • Healthy enclosures • Innovations and innovative technologies • Law and practice of dilapidation • Maintenance and refurbishment • Materials testing • Policy formulation and development • Project management • Resilience • Structural considerations • Surveying methodologies and techniques • Sustainability and climate change • Valuation and financial investment
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