A simplified model for estimating population-scale energy impacts of building envelope air-tightening and mechanical ventilation retrofits

TitleA simplified model for estimating population-scale energy impacts of building envelope air-tightening and mechanical ventilation retrofits
Publication TypeJournal Article
Year of Publication2015
AuthorsLogue, Jennifer M, William JN Turner, Iain S Walker, Brett C Singer
JournalJournal of Building Performance Simulation
Volume9
Issue1
Date Published01/2015
Keywordsair tightening, energy, policy, retrofit, ventilation, weatherization
Abstract

Changing the air exchange rate of a home (the sum of the infiltration and mechanical ventilation airflow rates) affects the annual thermal conditioning energy. Large-scale changes to air exchange rates of the housing stock can significantly alter the residential sector’s energy consumption. However, the complexity of existing residential energy models is a barrier to the accurate quantification of the impact of policy changes on a state or national level.The Incremental Ventilation Energy (IVE) model developed in this study combines the output of simple air exchange models with a limited set of housing characteristics to estimate the associated change in energy demand of homes. The IVE model was designed specifically to enable modellers to use existing databases of housing characteristics to determine the impact of ventilation policy change on a population scale. The IVE model estimates of energy change when applied to US homes with limited parameterisation are shown to be comparable to the estimates of a well-validated, complex residential energy model.

DOI10.1080/19401493.2014.993710
LBNL Report Number

LBNL-6940E