ARBS Project Excellence Award 2016

Westpac St. George HQ Refurbishment – Norman Disney Young & Westpac Corporation

Owned by Charter Hall and originally constructed in the late 1980s, this building in Kogarah is home to the St. George headquarters. Comprising of 31,000 square meters across five levels, the building was operating at a NABERS Office Base Building Energy Rating of 0 Stars and the brief was to elevate the rating to 4.5 Stars.

The brief to Norman Disney & Young (NDY) and the design team was clear: elevate the building’s credentials to a NABERS 4.5 Star Energy Rating and create a workplace that reflected the leading sustainability and modern workplace credentials of one of Australia’s largest banks.

Initially appointed in 2013 to provide a Master Plan Report for all services, NDY were subsequently appointed for the upgrade of the base building services. NDY were also appointed for all services related to the 26,000 square meters internal fitout. NDY’s expertise in energy modelling identified options to improve the base building’s NABERS rating from 0 Stars to 4.5 Stars.

Coles Coburg North – Coles & City Building Engineering Services Pty Ltd

As a result of Coles ongoing commitment to creating a sustainable footprint for our industry leading supermarkets, our new concept store at Coles Coburg North (Vic) represents a leap forward in both HVAC&R system design and application. Through the Coburg North project we have achieved an energy profile showing a 16% reduction over our recently enhanced modern base fleet comparison store obtaining energy consumption figures to rival the Award winning Hallam store (ARBS Project Excellence Winner 2014) with the added benefit of the removal of synthetic refrigerants. North Coburg was built to 4 star (plus) green star standard and is our first partly solar powered Victorian store with 399 solar panels installed and the ability to generate 100 kW of power.

Coles North Coburg employs many initiatives which make this project stand out from the field and sets the bar high for others to follow effectively re baselining the standards in supermarket design in Australia.

Initiatives Include:
 * Synthetic refrigerants removed from the HVAC&R plant by the use of Natural
    Refrigerants R744, R290 & R1270.
 *Reduction in Global Warming Potential through direct and indirect emissions.
 *Innovative plant design utilising Transcritical Parallel Compression process
on the HVAC&R plant.    

 *Highly efficient 250kW Combined Cooling Plant integrated into the refrigeration
plant to service the AC Load.

 *Closed loop condenser water system to service display cases using Hydrocarbon
refrigerant R1270 incorporating adiabatic pre cooling 100kW Photovoltaic solar
generation system.

 *New format LED lighting types and lighting layout increasing customer
experience whilst reducing energy consumption.

 *Harvest, store and use rainwater.
 *Further enhanced outside air quality management by controlling via direct
    monitoring of zone CO2 levels.
 *Project designed to meet 4 Star (Plus) Green Star rating.

Sylvan Australia ammonia glycol chiller – Strathbrook Industrial Services & Danfoss

Strathbrook Industrial Services have designed and installed a new Glycol system for Sylvan Australia’s the existing Mushroom spore factory , which used an air cooled heat exchanger to cool a closed water loop , so that water could be pumped through a braised plate heat exchanger to achieve the first stage of cooling from 120 deg C to 30deg C. A critical charged ammonia chiller was also designed and installed to provide the second stage of cooling from 30 deg C to 6 deg C, using the new air cooled water system as a condensing medium for the ammonia chiller.

In addition to chilling the glycol, the new ammonia chiller also provides heat recovery to pre heat the water which is mixed into the product during production, prior to the boil heating system be started.

The Ammonia chiller has a single Bitzer piston compressor with a direct coupled open dive motor, and is speed controlled via a Danfoss variable speed drive. The design also include a direct expansion Braised plate evaporator and a braised plate condenser , plus an automatic oil return system , and electronic control systems to control all aspects of the chillers operation.

The chiller has an Ammonia charge of 4.9kg’s and achieves a cooling capacity of 105kw at -2.5deg C sst and 32deg C sct. And is 39% more energy efficient that the previous glycol system.