The sustainability of the best alternative when changing the criteria weights in MCDA assessment of envelopes energy efficiency potential

Abstract

The assessment of energy efficient potential of multilayered envelopes was performed by Multi Criteria Decision Analysis (MCDA) techniques. There were compared eight types of wall assemblies from natural materials: hempcrete, adobe, strawbale panel, earthbag, cordwood, SIP (plywood+ecofiber), hempcrete+straw and energy efficient block. Validation of the best alternative sustainability was calculated by DECERNS MCDA software. Conducted research revealed that the most sensible criteria in weight range of [0.1-0.3] are «cost», «mass» and «u-value». Further analysis of the increasing/decreasing trends in wall assemblies should be conducted to discover the key role of specific criteria weight changing on the priority arrangement of the best wall alternative.