New Zealand supermarket giant Progressive Enterprises has made a commitment to
reduce the company’s overall carbon footprint by 40% by 2015, bringing emissions
back to 2006 levels.
Progressive, a subsidiary of Australian company Woolworths Limited, owns and
operates 152 supermarkets in New Zealand including the Woolworths, Foodtown and
Countdown brands. Over the next five years all Woolworths and Foodtown stores
will be converted to the Countdown brand.
Fantech NZ is proud to have been associated with the latest new store, Countdown
Manukau located in Manukau City, South Auckland. McAlpine Hussmann Limited was
contracted to install the mechanical services. Air Conditioning Sales and
Project Engineer Edlay Hojird said the building had a 10,000sqm (100 x 100m)
footprint, with a single level basement car park and ground floor retail area.
Along with all new generation Countdown supermarkets, the Manukau store features
sustainable design initiatives such as increased use of natural light and energy
efficient building management systems. To curb energy consumption from
refrigeration and freezer units, the store has introduced energy efficient
refrigeration cabinets with new more environmentally friendly refrigerant gases.
Edlay said the green design philosophy had extended to the basement car park
where 11 JetVent impulse jet fans from Fantech had been installed. The 50N units
are controlled by a gas detection system that ensures carbon monoxide, nitrous
oxides and fumes from vehicles are controlled and extracted appropriately.
The JetVent fans were selected in conjunction with the Mechanical Consultant,
Thurston Consulting. Fantech NZ Technical manager Nigel McQueen said energy
efficiency had been a major objective when deciding what fan to use. “Our
selection was also governed by the design of the support floor, a stressed
diaphragm construction which did not incorporate support beams,” he said.
The Countdown car park is a ‘semi-open’ design that has multiple openings in the
outer walls. “The JetVent system works on well-proven tunnel principles and is
able to use these openings to ensure a constant movement of air without the need
for ventilation shafts,” Nigel said. “A computational fluid dynamics (CFD)
analysis confirmed the most appropriate location for each of the 11 fans which
draw air in via the North side of the car park and push it out via the South
Ceiling height is often restricted in a car park, and although the Countdown
basement car park is 2.7m high, the designers did not want to clutter it with
ductwork typically associated with traditional car park ventilation.
“The very low profile housing of the JIU series of JetVent fans makes them ideal
for general car park ventilation. Furthermore, because an extensive ductwork
system is not needed, the result is an aesthetically pleasing, clean car park
ceiling and reduced installation costs,” Nigel said. “The entire car parking
area appears more spacious, and with the absence of ventilation shafts designers
have been able to maximise the number of car park spaces to 319.”
Edlay said Fantech had played a major role in the HVAC requirements of the
complex. “In addition to the carpark fans, Fantech supplied a number of products
for general ventilation in the Countdown store, mall, retail areas, amenities