Sam Roose Sam Roose, divisional manager for Enercon (a division of LTH) is an EnergyMasters’ accredited energy auditor who has been working in energy management and energy efficient design since 2003. Roose has managed Enercon since February 2015, and has since led several detailed energy efficiency studies across many commercial and industrial applications. He specialises in new development reviews, including hour-by-hour energy modelling for detailed analysis of central plant performance - as an example - as well as analysis and optimisation of building fabric and heating, ventilation and air conditioning (HVAC) systems. This work, though it focuses on energy efficiency, also encompasses thermal comfort studies such as whether a space will overheat given a certain façade and plant and condensation analysis such as how significantly double glazing reduces condensation risk. Roose has also developed energy management procedures for several Enercon clients, ensuring improved customer knowledge and enabling organisations to take ownership of ongoing energy management. In this regard its customer Nelson Pine comes to the fore as it was highly comended this year for ongoing energy management, including undertaking three energy audits in six years through Enercon. Roose’s other areas of expertise include feasibility studies for plant upgrades and optimisation of air conditioning systems. He was the first person in New Zealand to be accredited by the Energy Management Association of New Zealand (EMANZ) as a continuous commissioning WHO'S WHO Sam Van Oosterom Sam van Oosterom is currently doing his PhD in mechanical engineering at the University of Auckland. At this critical juncture he’s taking a keen interest in the use of renewable energy into the future. “When I’m finished studying I’d like to work in aerospace or the automotive industry. Ideally I’d love to work for a motorbike manufacturer such as Yamaha, Ducati or BMW where I will be able to apply my knowledge of composite materials” he says. “Will the future be hydrogen, battery cell, supercapacitor, or even flow cell-based? Now, that’s an interesting question.” Van Oosterom says he’s not sure of lithium-ion batteries in the long term as they seem to be offering diminishing returns. “Maybe lipo batteries – with slightly more power density and output – are the answer. But there’s an upper limit to battery energy density unless new chemical combinations can be found. “Work on fuel cells is on the increase, with some focus on them running through not only hydrogen but also methanol. “Ultimately only time will tell but it’s certainly interesting times for power generation, and I hope the most environmentally friendly will be in the offing.” He explains that the application is important as longer distance vehicles that need faster charging like trucks could look to hydrogen while smaller vehicles used for quick commutes and that can be charged overnight could look to battery technology. As to his studies, van Oosterom concedes that they’ve been tough, and that being at PhD level is a bit more “relaxed”. www.engineeringnews.co.nz 25 Russell Dweller Russell Deller is general manager of Mainmark Ground Engineering NZ. In this role - as a senior executive working closely with engineers and industry - he is a passionate advocate of new and innovative ground engineering solutions. This follows his extensive experience working in challenging environments and seismic locations across Australia and New Zealand. He began working for Mainmark in 1991 in Australia after the Newcastle earthquake which saw him involved in a number of infrastructure and heritage remediation projects spanning Newcastle’s university, courthouse and civic theatre as well as council buildings, heritage sites and churches. His experience working in earthquake prone regions was again applied in 2010 and 2011 following the Christchurch earthquakes where he oversaw the ground improvement, structure re-levelling and remediation of thousands of structures from residential homes and multi-storey buildings to civil and infrastructure assets. He was also instrumental in managing the complex Christchurch Art Gallery re-levelling project, which saw Mainmark recognised as winner of the ‘International Project of the Year Award’ at the 2016 Ground Engineering Awards. More recently Deller has been involved in developing a revolutionary liquefaction mitigation solution, including overseeing its first project at the Northwood Supa Centa, as well as extensive liquefaction mitigation research and testing in the Christchurch red zone. Sam Fairley Sam Fairley, Energy NZ senior project manager, has been engineering energy efficiency services for Energy NZ’s large industrial and commercial clients over the past decade. Fairley has stood out in this role as a result of his ability to understand complex systems and to come up with practical solutions to both simplify systems and reduce energy consumption. By challenging traditional thinking and taking calculated risks, Fairley has been responsible for engineering some of Energy NZ’s largest energy efficiency projects. A recent example was a heat recovery project at Goodman Fielder’s Hawkes Bay bakery. Like all large-scale bakeries, the Hawkes Bay site had a 1.2MW gas-fired boiler which produced steam for heating and humidifying the prover. The goal was to utilise recovered waste heat from the oven to eliminate the boiler. Goodman Fielder had tried and failed to implement a similar heat recovery project in Australia. Through an in-depth analysis of the thermal system, Fairely was able to identify where the previous project had failed. This led the way for a new heat recovery system design. Armed with this information, the Hawkes Bay site invested in the recommended heat recovery system. The site is now the first boiler-less large-scale bakery in Australasia. specialist in 2015. Ross Spearman Ross Spearman, Tait Communications’ chief technology officer, leads the company’s technology strategy to best position future offerings, with a strong focus on markets and customers. Through developments under Spearman’s supervision, Tait aims to further strengthen its leadership position in research and development for the critical communications industry. Spearman joined Tait from the position of chief technology officer at Ericsson in Seattle, the US. He has extensive commercial acumen and technological competence gleaned from 10 years of technology development largely in the US, Austria and New Zealand, and 14 years of account sales experience with tier one mobile operators in North America. Spearman holds a bachelor (first class honours) and masters of engineering (electrical and electronic) degrees from the University of Canterbury.
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