Paper Conference

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


Numerical study on smart dual fuel switching systems in net zero energy homes

King Tung, Navid Ekrami, Anna Wang, Alan Fung

Abstract: Hybrid residential HVAC system having an air-source heat pump (ASHP) coupled with a natural gas furnace can use relatively clean and inexpensive electricity to meet space heating demands. Currently, the heating source switches from the air source heat pump to the natural gas furnace at a pre-set outdoor temperature, thus making such system inflexible and not optimal. A full analysis was performed on a net-zero energy house (NZEH), located near London, Ontario, to ensure it meets NZEH requirements. It consists of a smart-switching thermostat that utilizes a set of temporal parameters to continuously optimize the switching point between the ASHP and furnace to minimize the total energy cost for the homeowner. The overall system was modeled to demonstrate the potential benefits of such Smart Dual Fuel Switching System (SDFSS) in this NZEH in terms of energy demand, associated operating cost and greenhouse gas emission on annual basis.
Keywords: Simulation, Sustainability, NZEH, Smart Dual Fuel switching System (SDFSS), ASHP
Pages: 232 - 240