Eco-pas - estimating the environmental performance of conceptual designs using parametric modelling

A wide range of LCE support tools has been developed over the years. Major limits of conventional analytical LCE support tools are however: too much input and too late output. This paper presents the Eco-PaS system providing pro-active DfE support based on functional requirements available in early design stages. Parametric models, called Eco-Cost Estimating Relationships (E-CERs), form the core of the system. They are an extension of the Cost Estimating Relationships, commonly used in design and development projects, to environmental performance. Next to the estimated environmental performance, the uncertainty of the estimation, caused by the parametric model as well as by the input parameters available in conceptual design, needs to be known. First concepts for uncertainty calculations are presented.status: publishe