jailcd2016028: Comparative of Carbon Emission Reduction Effect between the Self-Insulationand External Thermal Insulation Structural Buildings

Abstract

Since China's reform and opening up, urbanization was promoted and remarkable achievements wereade, Urbanization rate rose ftom 20% in the early 1980s to 53.7% in 2013. and the number of urbanresidents’ households rose from 155 million in 2001 to 257 million in 2013. Floor space of Urban and ruralresidential and public building completed increases year by year. According to China Building Energy Mode(CBEM) put forward by Building energy conservation research center of Tsinghua university, although thetotal building energy consumption and electric power consumption increases substantially, however, China'soverall energy efliciency was only about 33% and energy consumption per unit GDp even didn't achieve theworld's average until the year 2013. Excessive development and utilization of energy becomes the maincause of environmental pollution and climate change. Due to the large-scale building construction activitiesand energy consumption, in the year 2013, the yearly carbon emission of China achieved 10 billion tonswhich was accounting for nearly 30% of the world's total amount and more than the sum of the EuropeanUnion and the United States. While the blame from the international community on China's carbon emissioncauses the extermal pressure, the local climate change causes the intermal pressure. Consequently. it isimperative to implement effective measures for energy conservation and emission reduction. The climatechange caused by the greenhouse effect has caused a great threat to the world environment. As the largestcountry that emits carbon dioxide, China has caried out a wide range of energy-saving and emissionreduction work, of which the reform of wall materials is an important part. New-type wall increases therecycling of the industrial waste, facing the direction of lightweight, low energy consumption, lowproduction consumption, high thermal insulation performance. By paper research, the article summarizes thefull-life cycle and its evaluation method of construction, whose entire life cycle is divided into five stagesincluding, production of building, materials, transportation of building materials, construction. buildingoperation and destruction. Take the building B-39# in D area of JDXG real estate, Hangzhou, Zhejiang.China as example. with the theoretical ftamework of carbon emission system, calculate the LCA carbonemission of example building under the extermal wall constrction of Autoclaved Aerated Concrete (AAC)Bearing Block (B04. B06) self-insulation structural svstem as well as concrete hollow block external thermaimnsulation structural svstem, By comparative analvsis, verify the reduction efiect of new-tvne wall materials