1.Introduction Water pollution is the major cause of ecological degradation on our planet;it directly affects human water supplies,often with serious consequences to public health.A wide range of contaminants—includi...1.Introduction Water pollution is the major cause of ecological degradation on our planet;it directly affects human water supplies,often with serious consequences to public health.A wide range of contaminants—including chemicals,pathogens,and nutrients—has been and is currently being introduced into the natural environment.Household and industrial effluents,as well as urban and agricultural runoffs,are damaging aquatic ecosystems on a scale never seen before.展开更多
In the context of escalating global energy demands,urban areas,specifically the building sector,contribute to the largest energy consumption,with urban overheating exacerbating this issue.Utilizing urban modelling for...In the context of escalating global energy demands,urban areas,specifically the building sector,contribute to the largest energy consumption,with urban overheating exacerbating this issue.Utilizing urban modelling for heat-mitigation and reduction of energy demand is crucial steps towards a sustainable built-environment,complementing onsite energy generation in the design and development of Net-zero Energy(NZE)Settlement,especially in the context of Australian weather conditions.Addressing a significant gap in existing literature,this study offers empirical analysis on the climate and energy efficacy of integrated heat mitigation strategies applied in 14 neighbourhood typologies located in Sydney,Australia.Examining the application of cool materials on roads,pavements,and rooftops,alongside urban vegetation enhancement,the analysis demonstrates scenario effectiveness on heat mitigation that leads to reduce ambient temperature and energy demands along with CO_(2)emissions within the neighbourhoods.Considering building arrangement,built-area ratio,building height,and locations,ENVI-met and CitySim are utilized to assess the heat-mitigation and the energy demand of neighbourhoods,respectively.Results indicate that mitigation measures can lead up to a 2.71℃reduction in ambient temperature and over 25%reduction in Cooling Degree Hours,with a 34.34%reduction in cooling energy demand and overall energy savings of up to 12.49%.In addition,the annual energy-saving yields a CO_(2)reduction of approximately 141.12 tonnes,where additional vegetation further amplifies these reductions by enhancing CO_(2)absorption.This study showcases the pathway towards achieving NZE goals in climates similar to that of Australia,highlighting significant benefits in heat-mitigation,environmental impact,and energy-savings.展开更多
文摘1.Introduction Water pollution is the major cause of ecological degradation on our planet;it directly affects human water supplies,often with serious consequences to public health.A wide range of contaminants—including chemicals,pathogens,and nutrients—has been and is currently being introduced into the natural environment.Household and industrial effluents,as well as urban and agricultural runoffs,are damaging aquatic ecosystems on a scale never seen before.
基金supported by the 2020 UNSW Scientia PhD Scholarship Scheme and carried out under the UNSW Scientia Project entitled“Energy Poverty in NSW.Characteristics,Impact and Solutions”.
文摘In the context of escalating global energy demands,urban areas,specifically the building sector,contribute to the largest energy consumption,with urban overheating exacerbating this issue.Utilizing urban modelling for heat-mitigation and reduction of energy demand is crucial steps towards a sustainable built-environment,complementing onsite energy generation in the design and development of Net-zero Energy(NZE)Settlement,especially in the context of Australian weather conditions.Addressing a significant gap in existing literature,this study offers empirical analysis on the climate and energy efficacy of integrated heat mitigation strategies applied in 14 neighbourhood typologies located in Sydney,Australia.Examining the application of cool materials on roads,pavements,and rooftops,alongside urban vegetation enhancement,the analysis demonstrates scenario effectiveness on heat mitigation that leads to reduce ambient temperature and energy demands along with CO_(2)emissions within the neighbourhoods.Considering building arrangement,built-area ratio,building height,and locations,ENVI-met and CitySim are utilized to assess the heat-mitigation and the energy demand of neighbourhoods,respectively.Results indicate that mitigation measures can lead up to a 2.71℃reduction in ambient temperature and over 25%reduction in Cooling Degree Hours,with a 34.34%reduction in cooling energy demand and overall energy savings of up to 12.49%.In addition,the annual energy-saving yields a CO_(2)reduction of approximately 141.12 tonnes,where additional vegetation further amplifies these reductions by enhancing CO_(2)absorption.This study showcases the pathway towards achieving NZE goals in climates similar to that of Australia,highlighting significant benefits in heat-mitigation,environmental impact,and energy-savings.
