Paper Conference

Proceedings of eSim 2018: 10th Conference of IBPSA-Canada


Integrated Hygrothermal and Energy Modelling Methodologies for Heritage Buildings in Cold Climates

Michael Gutland, Scott Bucking, Mario Santana

Abstract: The East Block building in Ottawa was built in 1859-1967 and has been suffering from chronic moisture-related deterioration for much of that time. With a major rehabilitation of the building being scheduled, it is an opportune time to assess the hygrothermal characteristics of the building in its current state. The Southwest Tower was fitted with thermocouples, heat flux sensors and RH sensors to collect real-time conditions over the fall/winter. Using this measured data, EnergyPlus and 2D hygrothermal software, an optimization process was used to calibrate important modelling parameters such as thermal conductivity, air infiltration, sorption and permeability. Designers can then extrapolate this knowledge to plausible future retrofit scenarios to be done which address sustainability or durability goals. Simulations can allow designers of the rehabilitation to better evaluate and understand the risk of further deterioration from moisture and increased freeze/thaw cycles; versus the reward of decreased energy consumption.
Keywords: Energy Modelling, Freeze-thaw, Heritage Buildings, Hygrothermal Modelling, Masonry, Monitoring, Rehabilitation, Retrofit, Sensitivity Analysis
Pages: 423 - 432