UPDATED: 3 new high efficiency ammonia projects from Star Refrigeration

By Sabine Lobnig, Jun 07, 2011, 16:03 4 minute reading

UK’s total solutions provider for efficient and environmentally friendly refrigeration systems just realised three new ammonia projects. Star Refrigeration installed a highly efficiency cooling system at a Scottish meat processing facility with a capacity of 365kW, its 600kW ammonia Neatpump at a Norwegian military base and a 5MW cooling plant at Arla food’s diary. ammonia21.com summarises the three case studies. UPDATE: In July 2011 the Nea

Star’s ammonia Azanechiller for Scottish meat processor

In order to extend the existing processing site of meat processor Scotbeef, Star Refrigeration designed, supplied, installed and commissioned a high efficiency ammonia packaged Azanechiller to provide accurate temperature control to three new beef processing rooms. The central pumped glycol system has a total cooling capacity of 365kW and includes pumps with variable speed drives, six ceiling mounted glycol coolers and a computerised control system.

Basic specifications Star’s Azanechiller:

  • Typically offers a 30% increase in performance compared with standard HFC chillers
  • Available as an air-cooled or water-cooled unit
  • Cooling capacity from 200kW to 850kW
  • Features high quality and performance
  • Robust construction designed to provide over 20 years of hassle-free performance
  • Ultra low refrigerant charge
  • Low maintenance
  • Ideal for food and drink production, cold storage, distribution and process cooling
Innovative ammonia heat pump plant for Norwegian military base

Together with Norwegian refrigeration partner Norsk Kulde, Star Refrigeration has installed an ammonia Neatpump that extracts heat from seawater from the harbour in Ramsund, Norway for the Naval Military Base there. Replacing an ageing R134a heat pump system, Star’s innovative heat-pumps system using a low charge of ammonia as the refrigerant meets the needs of the Norwegian military to install an environmentally conscious, energy saving heat pump system, with a robust, low maintenance design.

Ramsund’s Neatpump was built at Star’s Glasgow manufacturing facility and was shipped as a complete packaged unit, ready for installation in an existing plant room at the military base. The plant has a 600kW capacity and a Coefficient of Performance of 2.7, heating water to temperatures between 60 and 68 degrees Celsius.

Basic specifications high efficiency Neatpump from Star
  • Renewable energy heat pump that extracts heat from seawater, air or any industrial waste stream
  • Waste heat is captured, compressed, boosted and recycled to provide hot water at up to 90°C
  • Available with capacities ranging from 300kW to 8000kW
  • Vilter single screw compressor with balanced pressure across the central rotor, ensuring long life, high reliability and low maintenance
  • Applications: process cooling and heating, AC with heating, steam raising and district cooling, heating and desalination
  • Can be commissioned and charged prior to delivery, reducing site installation and commissioning time
H&V News Awards 2011

The ammonia Neatpump achieved the prestigious accolade of “Product of the Year” at the London H&V News Awards ceremony celebrating exceptional achievements in the heating, ventilation and air conditioning industry. The awards ceremony, which attracted over 1000 people, was held at the Grosvenor House Hotel in London, UK. 

Praised by the judges for the concept of taking low-grade waste heat rejected from cooling or refrigeration processes, the ammonia-based technology has a zero global warming effect. The Neatpump offers reduced maintenance requirements thanks to the Vilter single screw compressor, balancing forces that reduce wear on bearings. It also has automatic capacity control and compression ratio control. 

Capable of generating hot water temperatures of up to 90°C, according to Star refrigeration the Neatpump can achieve a coefficient of performance (COP) of more than 3. The system is also able to deliver savings in running costs of up to 40%, making cheaper than gas.
Multi-temperature cooling plant at Arla Foods in the UK

Star designed, supplied and installed a state-of- the-art central ammonia refrigeration plant, with energy saving equipment and control at Arla Foods in West Yorkshire, UK. The central ammonia system consists of five screw compressors, three featuring inverter drives to optimise part load efficiency. Heat is rejected via three evaporative condensers with inverter driven fans that are located above the plant on the roof of the building. Other energy saving features include inverter controls for the glycol/water circulation pumps, floating head pressure control and floating suction pressure control. With total cooling demand of 5MW, it operates at three separate temperature levels. A chilled water circuit provides cooling for the building’s heating, ventilation and air conditioning systems.

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.

When it comes to designing energy efficient cooling and heating systems, Star is a natural innovator. Star works with strategic partners across the globe to deliver low carbon, cost saving solutions.


By Sabine Lobnig

Jun 07, 2011, 16:03

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