August 2016






Codified conduct
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The HVAC&R industry is preparing for the widespread use of flammable refrigerants in an increasing number of applications, including building air conditioning. AIRAH’s Vince Aherne, M. AIRAH, and Phil Wilkinson, F. AIRAH, consider whether the building supply chain is ready for this change, and ask the question, “Should the NCC cover the safety of refrigeration systems within buildings, and if not, why not?” 

Do the tighten up

(full article)  

Could changes to Australia’s National Construction Code improve energy efficiency through improved building envelope air tightness?

Natural inclination

(full article)  

In little over a decade, the phase-out of HFC refrigerant in Australia will be almost 85 per cent complete. Among those sectors to be most affected by the phase-out of popular refrigerants such as R404a and R134a will be food retailers, but progressive supermarkets are already managing the change.

Youthful endeavors

(full article)  

It goes without saying that emerging HVAC&R engineers – from recent graduates to those still considered young by their older peers – have the future of our industry in their hands. But to fulfil their promise, they must overcome a range of challenges, from negotiating the skills gap to managing globalisation.  

Energy performances of low-charge NH3 systems in practice

(full article)  

This paper describes the measured energy performances of two medium-sized refrigerated distribution centres with respective storage volumes of approximately 10,000 and 40,000m³. The performance evaluations are based on the electrical energy consumption as measured by the electrical energy provider over one calendar year. Both systems are serviced by state-of-the-art low- charge, dual-stage NH3 refrigeration systems with VFD-controlled reciprocating compressors; evaporative condensers and hot gas defrost.

Stefan Jensen, F.AIRAH

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