Reducing Carbon Dioxide Emissions through Energy-saving Renovation of Existing Buildings

Abstract

The rapid expansion of the worldwide tourism industry has significantly increased energy consumption in hotels. Hence, the renovation of existing hotel buildings is relevant to achieving the energy-saving goals of the construction sector. This study takes a hotel in eastern China as an example of energy-saving renovation. First, based on a BECS energy-saving design and SPSS statistical analysis software, the energy-saving effects of renovation of building envelope (windows, walls, and roofs) are dynamically simulated, and a comparison of various renovation schemes is carried out by adopting an orthogonal experimental method and conducting a variance analysis. Second, the energy performance of the lighting and air conditioning systems is analyzed during the entire renovation process. Third, the economic environmental and social benefits were comprehensively analyzed. The results show that energy-saving renovations can effectively reduce energy consumption in existing buildings as well as the associated CO 2 emissions. Specifically, the energy-savings rate of the building envelopes and the energy systems were 14%-20% and 60%-70% respectively. As for carbon emission, 947.55 tons of total CO 2 emissions per year were eliminated through the renovation project. Specifically, CO 2 emission reductions reach 247.65 tons per year through energy-saving renovation of building envelope, and CO 2 emissions reductions resulting from the renovation of the airconditioning system and lighting system were 220.88 tons and 479.09 tons per year respectively. Additionally, the dynamic investment payback period of the hotel energy-saving renovation project was calculated to be between 8-9 years. The demonstrates that the renovation of hotel buildings plays an essential role in benefiting the environment and the economy and social welfare.

Reduction in Carbon Dioxide Emission and Energy Saving Obtained by Renovation of Building Envelope of Existing Residential Buildings

“…At present, the amount of CO2 in the atmospheres is nearly 50% higher than in 1750 (Su et al, 2020). CO2 emissions have globally received more and more attention, including greenhouse effects, health of ecosystems, radiative forcing, global carbon cycle, reduction of carbon dioxide emissions, as well as CO2 capture and geological storage (Cai et al, 2019;Xiang et al, 2019;Yang et al, 2019). Atmospheric quality deterioration has occurred in Asian, European and North American cities in recent years, and especially in some rapidly developing regions and countries (Li et al, 2018).…”

Carbon Dioxide Leakages through Fault Zones: Potential Implications for the Long-term Integrity of Geological Storage Sites

“…As a result of these observations, we suggest that carbon dioxide-leakage levels increase owing to fracture opening, potentially caused by changes in fault architecture and permeability structure of regions surrounding the faults. (Yang et al, 2019;Xiang et al, 2019) and the crustal tilt observation in cavern (Yamamoto et al, 2004;Chen et al, 2015) can be found in references. Eventually, we have examined measurements of data from Jan. 1, 2019 to Aug. 31, 2019, during which period both crustal tilt and carbon dioxide levels are simultaneously recorded.…”