Person

Zhenjun Ma

Dr Zhenjun Ma obtained his BEng and MSc degrees in Refrigeration and Air-Conditioning from Xi’an Jiaotong University, China, in 2001 and 2004 respectively, and received his PhD degree in Building Energy Efficiency and Automation from The Hong Kong Polytechnic University in 2008. He worked in Shanghai HITACHI Electrical Appliance Co. as a design engineer from 2004-2005. Before joining University of Wollongong in 2011, he worked as a Postdoctoral Fellow in the Department of Building Services Engineering at The Hong Kong Polytechnic University. Over past years Zhenjun has been working extensively on energy efficiency and de-carbonization of commercial buildings. 
Conference paper

Near-roof air temperatures: modelling the implications for HVAC performance and cool roofs

Conventionally in building performance simulations (BPS), it is assumed that air entering outdoor HVAC equipment is at the outdoor ‘ambient’ temperature, obtained from a weather file. However, significant spatial variations exist in outdoor air temperature fields, especially within the thermal boundary layers that form near...
Report

Building code energy performance trajectory: final technical report

The buildings sector is responsible for approximately 23% of Australia’s carbon emissions. The Australian Sustainable Built Environment Council (ASBEC), the peak body for sustainability in the built environment, has identified that improving the minimum standards for energy efficiency of new buildings can assist in delivering...
Report

Driving increased utilisation of cool roofs on large-footprint buildings: final report

Cool roof technology is known to reduce the cooling energy consumption of conditioned buildings during hot periods, and widespread implementation of such roofs in a neighbourhood or precinct can mitigate the urban heat island effect. Established building energy modelling techniques are able in principle to...
Technical report

Building code energy performance trajectory: Interim technical report

This report is the Interim Technical Report for the Building Code Energy Performance Trajectory Project. It accompanies the Interim Synthesis Report for the Building Code Energy Performance Trajectory Project, entitled The Bottom Line – the household impacts of delaying improved energy requirements in the Building...