| Author: | Deng, Jiayu |
| Title: | Development of wooden-based positive-energy buildings from a life-cycle perspective |
| Advisors: | Cao, Sunliang (BEEE) |
| Degree: | M.Eng. |
| Year: | 2024 |
| Department: | Department of Building Environment and Energy Engineering |
| Pages: | v, 70 pages : color illustrations |
| Language: | English |
| Abstract: | Under the context of global warming, carbon reduction especially in the building industry becomes more urgent because it accounts for a large part of the total emission. Positive-energy building, which is a zero or even negative carbon emission building, is studied by more and more researchers and is perceived to be an effective solution. However, fewer papers focus on timber materials as building envelopes in warm regions. Also most paper only studied the carbon emission without the economy. The applicability of using wood materials and the performance of renewable energy systems remain unknown. In this paper, a wooden-based positive-energy building in Hong Kong is targeted to conduct the simulations in TRNSYS (Transient System Simulation Tool) using the life cycle analysis method. The photovoltaic (PV) panels, wind turbines and battery are integrated to testing the energy matching performance, life cycle carbon emission (LCCE) and life cycle cost (LCC). To find out the impact on contributing factors of renewable energy systems, sensitivity analysis is conducted and classified into three categories, which are combination of different renewable energy devices, expansion of negative carbon emission impact and battery capacity. The result shows that it is easy to develop a positive-energy building by increasing the number of renewable energy devices which simultaneously shows favourable energy performance, negative carbon emission and good economy. Meanwhile, increasing the proportion of PV panels reveals the superiority of energy performance and economics. Additionally, the increase of battery capacity can benefit the energy matching while extending the payback period while requiring for longer payback period. Generally speaking, the stakeholders should make trade-offs based on different needs. Lastly, these results may only apply to the situation at present due to the instability of the energy feed-in tariff（FiT）. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 7749.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 1.54 MB | Adobe PDF | View/Open |
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