Analysis of the influence of different variables on the impacts related with the envelope of buildings for residential use, with estimation of the interaction of the user. Issue 2 (3rd July 2018) - Huedo, Patricia
ABSTRACT: There is an important mismatch, or gap, between the predicted and actual measurements of the impacts that are produced, mainly during the use phase of buildings. In this study, the authors estimated the weight of the different explanatory variables used to define the model for predicting the impacts in the evaluation of the dependent variables considered: 'CO2 equivalent emissions' and 'primary energy consumption'. The study explores the extent to which the intervention of high- or low-energy users (depending on their purchasing power) influences the impacts of the use phase linked to the envelope, 'user interaction' being considered as a variable that modifies the impact predicted by the model. The results obtained show that, without taking the user into account, climate zone is the variable with the greatest influence, since it accounts for over 80% of the variation in heating consumption in the use phase. However, on analysing the influence of the user in zones with a continental climate, the results varied with respect to the predicted value, from 5% in the case of low-energy users up to more than 53% when they are very high-energy users.