Abstract

Purpose: To study carbon emissions during operation and embodied emissions of green buildings in different regions and star grades. Research methodology: Explore the carbon emission benefits of different star green buildings through different sustainable carbon reduction strategies, and help promote the sustainable development of residential buildings. Results: The carbon emissions of star green buildings decrease from north to south. Northern residential buildings are most affected by renewable energy and envelop, while in southern regions, renewable energy and heating, ventilation, and air conditioning(HAVC) equipment performance improvement can be prioritized. The embodied emissions in the south are lower than that in the north, and the carbon reduction of recyclable materials can reach 22~48 kgCO2/m2. The total carbon emissions of the same star green buildings are gradually decreasing. Green buildings of high star grades and optimized building design can promote the comprehensive carbon reduction effect of buildings. Conclusions: The application of carbon reduction strategies that differentiate between operational carbon and implicit carbon under sustainable development has different carbon reduction characteristics. Based on the characteristics of different residential buildings, it is necessary to conduct in-depth analysis of carbon reduction features and formulate different sustainable development strategies to achieve maximum carbon reduction benefits.

Keywords: Grades; Star green buildings; Carbon emissions during operation; Embodied emissions