Azanechiller 2 sets ammonia benchmark
UK: Star Refrigeration has re-engineered its low-charge ammonia Azanechiller to produce a machine which is said to exceed the EU’s ecodesign directive by 51%.
Through the combination of variable speed reciprocating compressor technology, EC fans, close approach evaporator design and in-house PLC software, Azanechiller 2.0 is said to deliver a SEER of 5.6 for comfort cooling applications and a Seasonal Energy Performance Ratio of 7.59 for process cooling.
“With COPs up to 3.63 at 100% load and 35°C ambient, increasing to 11.9 at 50% load and typical UK ambient temperatures of 10°C, the new Azanechiller 2.0 is 15% more efficient than its screw compressor counterparts at design conditions,” claims Angus Gillies, design director at Star Refrigeration.
A low charge design uses a combined evaporator/separator to achieve refrigerant volumes as little as 0.18kg/kW.
Alan Walkinshaw, director of sales at Star Refrigeration, said, “We are very excited about the capabilities of the new and enhanced air-cooled Azanechiller 2.0. When setting out to develop the next generation of Azanechiller, we focused on meeting the demands of our customers for increased efficiency, lower refrigerant charge and improved capital cost. The Azanechiller 2.0 technology represents a new era for packaged ammonia systems in the chiller industry.”
“Azanechiller 2.0 has been brilliantly engineered to deliver consistent efficiency and reliability in highly demanding environments. It offers a 39% reduction in chiller weight compared to the previous model range and a 16 % improvement in seasonal running costs. This is achieved with an ammonia charge as little as 61kg,” Walkinshaw claims.
Each Azanechiller package is manufactured, charged, commissioned and run tested at Star Refrigeration’s production facility in Glasgow, Scotland. When delivered to site, installation and commissioning time is reduced to a matter of days based on the chillers’ plug and play design.
The Azanechiller 2.0 features two separate model ranges for high and medium temperature applications. This makes it suitable for a wide variety of end user markets, including temperature controlled storage, food processing, beverage production, process cooling, HVAC, data centres, ice rinks, pharmaceutical and petrochemical industries.
The high and medium temperature Azanechiller family supply cooling capacities ranging from 200kW to 1200kW for secondary fluid supply temperatures from -10°C to +10°C. Each chiller features a variable speed reciprocating compressor with IE3 drive motor, low profile air-cooled condenser with EC fans, compact plate and shell evaporator with integrated separator, PLC control, and stainless panels. Options are available for remote access and alarm reporting, a second variable speed compressor and motor, Axitop condenser fans, heat recovery and witnessed performance testing.