Joel Seagren, M.AIRAH

Low-volume continuous ventilation: achieving NCC 2019 (condensation management) compliant solutions while maintaining comfort and low-energy use

The National Construction Code (NCC) 2019 Volumes One and Two introduce new requirements for condensation management, including minimum exhaust flow rates (where exhaust systems are installed). The intent appears straightforward in exhausting high-humidity air to decrease the risk of condensation and mould growth; however, the challenge is maintaining low-energy use in tandem with thermal comfort for these spaces.

Lower-volume continuous ventilation with heat recovery is increasingly used in Class 1 and 2 high-performance buildings in Australia to achieve these objectives. Yet these solutions don't meet the new Deemed-to-Satisfy requirements. This presentation seeks to understand the performance requirements of this section and examines how NCC compliance might be achieved for this more energy-efficient form of ventilation. 

About Seagren:
Seagren is a mechanical engineer and an intelligent ventilation solutions engineer at Fantech. He has a particular focus on systems that ensure high levels of indoor air quality. Seagren is also a director of the Australian Passive House Association, with a passion for helping deliver comfortable, healthy and energy-efficient spaces in buildings.