COMPARING ENVIRONMENTAL IMPACTS FROM ENERGY AND MATERIALS EMBODIED IN BUILDINGS AND USED DURING THEIR SERVICE LIFE.
Models calculating the environmental benefits of renovation and retrofitting of buildings are generally based on energy calculations and dont take into ac-count the environmental penalty of demolishing and replacing parts of the building and its equipment. The environmental effect embodied in these activities is neglected and only the environmental benefits of a lower building related energy use are taken into ac-count. In addition, energy use cannot be considered an environmental problem in itself, but causes several environmental impacts, which are not necessarily linearly related to the energy use. In this paper, the author studies the relative values of the embodied environmental impacts and the operational environ-mental impacts, as well as the relationship between energy use and environmental impacts. The calcula-tions are based on a tool for energy use calculations and on EcoQuantum, a tool for life cycle assessment. Results are presented in terms of environmental pay-back times. The results are discussed and clarified based on two case studies. Recommendations are made about the necessity of a dynamic simulation procedure.
Environmental effect Life cycle assessment Building renovation Embodied materials and energy Opera-tional energy.
Laure Itard
Delft University of Technology, Research Institute OTB, P.O Box 5030, 2600 GA Delft, The Netherlands, L.C.M.Itard@tudelft.nl
国际会议
北京
英文
2007-09-03（万方平台首次上网日期，不代表论文的发表时间）