A Study on Carbon Dioxide Emission of Interior Refurbishment in Residential Building
| Autor: | Chung-Hao Hsu, 徐均昊 |
|---|---|
| Rok vydání: | 2013 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 101 Global warming is exacerbating with time and has become a threat. Being the lead of industries, the construction industry has no choice but to take it seriously. More and more researchers focus on investigation and research of building life cycle carbon dioxide emissions. Although there are many similar studies in Taiwan, emphases are mainly on production of construction materials. Carbon dioxide emission data during construction is lacking. Market demand for “refurbishment projects” in Taiwan is soaring as compared with “new construction projects.” The current demand for interior refurbishment in Taiwan is strong as residents have different needs with regards to their residential houses. Therefore, this study focuses on on-site investigation and research to examine the “construction phase” in interior refurbishment projects aiming to identify the universal features among all the complicated interior refurbishment construction works. Quantitative assessments are then performed to quantify the resulted environmental loads. Findings in this study can serve as a supplementary data to complement the insufficient data in carbon dioxide emissions study in Taiwan. This study adopts literature review and on-site inspection methodology to establish a precise database on carbon dioxide emissions. In support of the data, spreadsheet simulations of actual interior refurbishment projects are conducted, analyzed, and discussed. Life cycle of refurbishment projects can be categorized into 4 phases; namely initial demolition, production of construction materials, transportation of construction materials, and actual construction works. Energy consumption in each phase is probed into, and construction procedures are developed based on findings from on-site investigation and interviews. A database is then established on carbon dioxide emissions in original unit. Six major types of construction tasks are investigated; namely wall building, flooring, ceiling setting, pipelines fixation, cabinet-unit installation, and surface decoration. These construction tasks are further categorized into a total of 14 types of works. About 2 to 3 such construction tasks are observed in each project in this study. Spreadsheet simulation models are then established with computer software and calculations are made based on 5 actual refurbishment floor plan data to evaluate the feasibility of carbon dioxide emission calculations for interior refurbishment projects proposed in this study and to further explore the actual differences of each construction task and energy consumption categorization. Spreadsheet calculation shows that cabinet-unit installation produces the highest CO2 emission, accounting for approximately 50% of the total CO2 emission, followed by flooring 17%, ceiling 11%, wall building 9%, initial demolition 8%, and lastly, pipelines fixation and surface decoration produce the lowest CO2 emission, accounting for 1% and 5% of total CO2 emission respectively. Production of construction material is the most energy consuming, accounting for 80% of the total energy consumption. Not considering construction material production, the next energy consuming work is transportation and disposal of construction waste, accounting for 32%, followed by construction workers’ traveling to and from work 19%, transportation of construction material 16%, and human labor 14%. Of these, transportation accounted for about 60% of CO2 emission and is considered a high energy consumption factor besides construction material production. Calculations in these refurbishment examples prove that study models in this research are effective for initial quantitative assessment of CO2 emissions in interior refurbishment projects and may be used for early evaluation of CO2 emission in interior refurbishment projects. A CO2 emission reduction strategy can then be established so that early steps may be taken to save energy and reduce carbon emissions. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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