Energy efficient packaged ammonia chillers from Star Refrigeration

By Sabine Lobnig, Sep 07, 2010, 11:55 3 minute reading

UK's largest independent industrial refrigeration engineering company, Star Refrigeration, is adding its range of high efficiency, ammonia refrigerant packaged chillers to the product database. Star’s Azanechiller range is comprised of 12 models of air and water cooled chillers with capacities ranging from 200kW to 850kW.

The Azanechiller can cool both water and secondary fluids including glycol, making it suitable for a variety of applications including temperature controlled storage, food processing, ice rinks, process cooling and building services. It is not only ideal for new projects but also retrofits and is commissioned and charge prior to delivering in order to reduce site installation and commissioning time.

Higher efficiency from refrigerant and components

Besides the obvious environmentally friendly key characteristics of ammonia, the natural refrigerant also offers exceptional efficiencies across a wide range of operating conditions. For typical water chilling applications, the ammonia Azanechiller can offer up to 20% of increase in performance compared to standard screw chillers using HFCs.

Azanechiller is a complete refrigeration package plant. To ensure optimum performance Star integrated high efficiency components together with its Telstar PLC controller. Key energy efficient features include:
  • High Efficiency Screw Compressor from Bitzer
  • High Efficiency Condenser
  • Low Charge, High Efficiency Heat Exchangers
  • Star Low Charge, Low Pressure Receiver
  • Floating head pressure control
  • Floating suction pressure control
  • Close evaporator temperature approach
  • Efficient compressor loading philosophy

The AA Range: air-cooled condenser

The AA range of Azanechiller is a complete ammonia system housed inside an air-cooled condenser. There are six models of air-cooled Azanechiller with nominal capacities ranging from 218kW up to 784kW based on cooling water 12°C to 6°C. Basic technical specifications are:
  • Dry bulb temperature: 35°C
  • Dry Weight: 6,100 - 16,200 kg
  • Refrigerant charge: 75 - 200 kg
  • Full load current / power: 141 A / 82 kW - 486 A / 289 kW

The AW range: water-cooled

The AW range of water-cooled Azanechillers is a complete refrigeration package mounted on a common skid for location in a plantroom for housing. There are six models of water-cooled Azanechiller with nominal capacities ranging from 235kW up to 856kW based on cooling water 12°C to 6°C. Basic technical specifications are:
  • Capacity; 235 - 856 kW
  • Dry weight: 4100 - 9600 kg
  • Refrigerant charge: 32 - 86 kg
  • Full load current: 126 A / 74 kW - 366 A / 220 kg
  • Water flow rate 3.2 - 7.8 m3/h
Current Azanechiller installations have capacities ranging from 160kW to over 3MW. Interlinking multiple chillers provides Multi Megawatt installations.

More information

Star’s approach to reaching a wider market for this technology is by partnering with local market experts. This might be with a sales agent or perhaps even a manufacturing partner depending on the local partner’s skills and desires. Interested partners should contact Dave Pearson on +441416387916.

About Star Refrigeration

Established in Glasgow in 1970, Star Refrigeration has over 350 employees working from nine branches throughout the UK and a network of overseas partners enabling to deliver Star solutions around the world. The company is a total solutions provider, active from design through to commissioning and maintenance of cooling and heating systems.

The Star Refrigeration Group also own technical advisory arm, Star Technical Solutions, which operates as an independent consultancy; StarFrost, a market leader in industrial freezing and chilling systems for the worldwide food processing industry; Mechanical and electrical contractor Penec; and Star Learning Solutions, a training division offering online theoretical courses via and practical assessment to the Refrigeration, Air Conditioning and Building Services Engineering sectors.


By Sabine Lobnig

Sep 07, 2010, 11:55

Related stories

Sign up to our Newsletter

Fill in the details below