Experiment and Simulation of Energy Saving Strategies in Building Envelope
Date Issued
2014
Date
2014
Author(s)
Chen, Ying-Ju
Abstract
Due to global warming, climate changing, and the rising of gas and utility prices, research on buildings has been steered towards energy conservation, carbon reduction and sustainable development in Taiwan in recent years.
This research targets on different energy saving strategies among building envelope, which reduce the thermal effects in building structures, including vertical greenery, external shading devices, reducing ratio of transparency, and thermal insulation of walls. Field experiments were conducted in Taiwan to validate the effect on lowering building temperature. Experiment results show that: greening system has excellent performance on reducing building temperature. However, since constructing a greening system is complex and costly, it is compared with other strategies for further economical evaluations in both field experiments and numerical simulations.
Different software was used to simulate the effects on indoor temperature, including Abaqus, AccuRate and eQUEST. The simulation results were compared with field experiment data in order to evaluate the accuracy of indoor temperature prediction. Results show that Abaqus yields the most accurate prediction, followed by AccuRate. However, considering the expensive computational cost of Abaqus, AccuRate is more applicable in this research.
After the models are justified, the energy saving strategies are compared under the same control variables using Abaqus. Results show that greening system performs the best in temperature reduction, followed by thermal insulation of walls, and additional external shading devices and reducing ratio of transparency are the worst.
Subjects
建築物外殼
綠化壁面
外遮陽
開窗率
外牆隔熱
Type
thesis
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