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CFD Analysis of Fixture Output Impact on Upper Room Germicidal Ultraviolet Light System Performance
Kishor Khankari, PH.D., Fellow ASHRAE; William Bahnfleth, PH.D., P.E., Presidential Fellow ASHRAEUltraviolet germicidal irradiation (UVGI) using electromagnetic radiation in the UV‑C wavelength band of 200–280nm can prevent the reproduction of microorganisms. Several...
Striking a balance: planning and implementation considerations for natural gas removal in hospitals
By Simon Witts BSc, CEng, MAIRAH, MCIBSE, FIEAust, CPEng, NER, APEC, IntPE(Aus); James Moyes MEng CEng MCIBSE MIEAust CPEng NER APEC IntPE(Aus) PE(Vic); and Broden Kay BEng (Architectural Engineering), Hons ABSTRACT This paper examines the challenges associated with...
Artificial Intelligence (AI) applications in the building and property industry
Arsen Ilhan, Stud.AIRAHABSTRACT Artificial intelligence (AI) is an area of computer science that emphasises the creation of intelligent agents, which are systems that can learn and act autonomously. AI deals with the question of how to create computers that are...
Developing a framework for delivering quality towards a sustainable built form future
Peter Phillips, F.AIRAH Member ASHRAE (Ret), Fellow AIRAH (Ret)ABSTRACT Delivering successful, high-quality, sustainable, future-proofed, built-form projects requires planning and coordination of complementary factors. This includes broad-based statements and detailed...
Disaggregation of precipitation data applicable for climate‑aware planning
David Ferrari*, Masoume Mahmoodi**, Chithral Kodagoda*, Nihal Abdul Hameed*, Trevor Lee*, Graham Anderson* * Exemplary Energy** College of Engineering and Computer Science, Australian National University, CanberraABSTRACT High-temporal-resolution precipitation data of...
Development of a whole-house energy rating tool for new housing
In 2019, Australian energy ministers agreed on the need for the Trajectory for Low Energy Buildings (the Trajectory). One of the key aspects in the Trajectory for residential buildings is to expand the Nationwide House Energy Rating Scheme (NatHERS) to offer nationally accredited whole-of-home (WoH) tools to enable compliance requirements in the National Construction Code (NCC).
Streamlining electrification in support of decarbonisation
Our industry has increasingly focused on the electrification of building utilities coupled with low-carbon electricity to support the global decarbonization effort. Examples include the University of California’s system-wide ban on the use of on-site fossil fuel combustion in new construction and major renovations, and the City of Seattle’s recently passed measure to prohibit the use of natural gas for space heating in new construction and major replacements of heating systems in commercial buildings, as well as for water heating in new hotels and
large apartment buildings. This column presents an approach to integrating the production of domestic hot water with an electric heat-recovery chiller plant as a streamlined solution.
Feasibility study of wastewater energy transfer for an existing campus building cluster
The HVAC-related energy usage of a group of three existing buildings on a Canadian university campus (the “Cluster”) was simulated. Two scenarios were compared: (1) an ambient loop paired with conventional HVAC equipment (boiler plant and cooling tower), and (2) an ambient loop using wastewater energy transfer (“WET”). The study aimed to assess the feasibility of implementing WET as a heating and cooling method for cold-climate institutional buildings, as well as to measure the effects of WET implementation on energy usage, greenhouse gas emissions, and energy costs
Pushing the Boundaries of Net Zero in the Australian Outback
Using a hybrid of dynamic thermal simulation and detailed hourly spreadsheet calculations, the analysis identified design and operation strategies to size PV and batteries for various degrees of grid independence.
Optimisation of Economy Cycle Operation and Supply Air Temperature Control for VAV systems
In the future, many Australian HVAC systems may be required to deal with harsher environmental conditions due to more extreme climatic conditions and a push to increase population centres in more northern and central regions of the country.
Hilltop harmony
Perched on a rocky crest in Mansfield, Victoria, Robbie J Walker’s off-grid house defies harsh weather conditions to heat and cool itself writes Nick Johns-Wickberg. Where some architects might be tempted to build a structure that looms over its surroundings,...
Standard operating procedure
AIRAH’s Infection Control and Operating Theatre Practices Special Technical Group is taking a close look at hospital air quality guidelines.
Breakfast of champions
At the recent Women of AIRAH breakfast, attendees were challenged to be agents of change for greater equity, diversity and inclusion in our sector."Are you a morning person?” asked presenter Lisa Martello at the Women of AIRAH breakfast, held before the second day’s...
Seeking star performers
Awards, celebrating distinguished contributions in Australia’s HVAC&R and building services sector. Awards are handed out in six categories: young achiever, product excellence, software/digital excellence, project excellence, outstanding industry...
Red revolution
M3 Melbourne is one of two data centres in the Victorian capital that are set to house Australia’s largest and most comprehensive cloud ecosystem. Constructed by Kapitol Group, M3 Melbourne, a 100,000m² data centre in West Footscray, and M2 Melbourne, a 16,000m² data...
The heat is on
An El Niño weather event has been declared, amid realisation that 2023 appears likely to be the hottest year on record. Australia’s Bureau of Meteorology has formally declared an El Niño weather event, meaning one is under way for the first time in eight years. El...
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