Australia aims to achieve net-zero emissions by 2050, and its building sector needs rapid change.... more Australia aims to achieve net-zero emissions by 2050, and its building sector needs rapid change. The Nationwide House Energy Rating Scheme (NatHERS) is supported by the Australian Government to expand the current building envelope thermal performance energy star rating to a whole-of-home (WoH) energy rating. The NatHERS Administrator supports CSIRO to develop a benchmark WoH energy rating tool for new and existing housing, respectively. The tool for new housing was released in June 2023. This study presents the tool development for Australian existing housing. A case study was conducted using the tool for the eight capital cities of Australian states and territories. It shows that with a detached house built in the 1900s being updated to six or more stars and replacing old equipment and appliances with high-energy-efficient ones, more than 50% of energy can be saved in all the eight cities. To be zero-energy (carbon) housing, 5 kW solar PV needs be installed in Darwin and Hobart, 4...
A zonal model has been nested within a multizone model (COMIS) to allow increased resolution in t... more A zonal model has been nested within a multizone model (COMIS) to allow increased resolution in the prediction of local air flow velocities, temperature and concentration distributions between and within rooms. Numerical simulations from the new program have been compared with published experimental measurements and results from other models. The comparisons indicate that this new program is a potentially useful tool for predicting air flows, temperature and contaminant distributions within some buildings.
Australian household energy consumption contributes about 13 % to the total national greenhouse g... more Australian household energy consumption contributes about 13 % to the total national greenhouse gas (GHG) emissions, and thus, to climate change. At the same time, climate change will in turn impact the total energy consumption and GHG emissions from the residential sector. This study investigated the potential impact of climate change on the total energy consumption and related GHG emissions of housing in Brisbane, Australia (a heating and cooling balanced climate region) and identified potential pathways for existing and new residential buildings to adapt to climate change by simulations in terms of the resilience to maintain the level same as or less than the current level of total energy consumption and GHG emissions.
Australia aims to achieve net-zero emissions by 2050, and its building sector needs rapid change.... more Australia aims to achieve net-zero emissions by 2050, and its building sector needs rapid change. The Nationwide House Energy Rating Scheme (NatHERS) is supported by the Australian Government to expand the current building envelope thermal performance energy star rating to a whole-of-home (WoH) energy rating. The NatHERS Administrator supports CSIRO to develop a benchmark WoH energy rating tool for new and existing housing, respectively. The tool for new housing was released in June 2023. This study presents the tool development for Australian existing housing. A case study was conducted using the tool for the eight capital cities of Australian states and territories. It shows that with a detached house built in the 1900s being updated to six or more stars and replacing old equipment and appliances with high-energy-efficient ones, more than 50% of energy can be saved in all the eight cities. To be zero-energy (carbon) housing, 5 kW solar PV needs be installed in Darwin and Hobart, 4...
A zonal model has been nested within a multizone model (COMIS) to allow increased resolution in t... more A zonal model has been nested within a multizone model (COMIS) to allow increased resolution in the prediction of local air flow velocities, temperature and concentration distributions between and within rooms. Numerical simulations from the new program have been compared with published experimental measurements and results from other models. The comparisons indicate that this new program is a potentially useful tool for predicting air flows, temperature and contaminant distributions within some buildings.
Australian household energy consumption contributes about 13 % to the total national greenhouse g... more Australian household energy consumption contributes about 13 % to the total national greenhouse gas (GHG) emissions, and thus, to climate change. At the same time, climate change will in turn impact the total energy consumption and GHG emissions from the residential sector. This study investigated the potential impact of climate change on the total energy consumption and related GHG emissions of housing in Brisbane, Australia (a heating and cooling balanced climate region) and identified potential pathways for existing and new residential buildings to adapt to climate change by simulations in terms of the resilience to maintain the level same as or less than the current level of total energy consumption and GHG emissions.
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