Azanefreezer 2.0

The natural solution for low-temperature storage and food processing applications, including blast and spiral freezing.

   

     Low charge, air-cooled packaged units

     from 100 kW to 650 kW and temperatures from

    -18°C to -40°C

Azanefreezer 2.0 is a state of the art, plug-and-play, low-charge ammonia refrigeration system designed for optimal efficiency and environmental sustainability. The simple packaged solution ensures quick installation and reduced on-site commissioning time, making it a cost-effective and reliable choice.

Phil Blakeman

“We made an important investment to switch our cold store refrigeration system from an R404a plant to an Azanefreezer unit. The previous system accounted for around 24% of our annual electricity consumption in 2018. Comparatively, the Azanefreezer unit is much more energy efficient, delivering lower electricity consumption and lower CO2e emissions. Being one of our biggest energy uses on site, we expect to see significant savings on our CO2e emissions for years to come. We have taken a big step in reducing the volume of environmentally detrimental substances on site. On top of this, we are currently working with Star on the next stage of our site refrigeration upgrade.”

Phil Blakeman

Phil Blakeman

Managing Director, Blakemans

Jonathan Baker

“Star Refrigeration were able to respond to the most stringent requests for quality and efficiency and provided a solution that exceeded the technical requirements specified to satisfy the facility’s cooling need. We are impressed with the advantages offered by Star’s Azanefreezer and the smooth delivery of the project.”

Jonathan Baker

Jonathan Baker

Executive Director, Lineage Logistics, UK

Unparalleled Efficiency

Energy performance data analysis for the Azanefreezer at recent installations indicates its annual energy usage is one-third of that of the UK’s ‘Best Practice’ guidelines and a quarter of that of the European industry average.

The Azanefreezer 2.0 Advantages

Azanefreezer 2.0 consistently exceeds the UK ‘Best Practice’ energy performance standards, achieving energy savings of up to 66%

Plug & Play

The Azanefreezer 2.0 is designed to redefine standards in industrial refrigeration.
The plug-and-play, low charge ammonia refrigeration system is engineered to integrate seamlessly into both new builds and retrofit projects without the need for a dedicated plant room. This groundbreaking design significantly simplifies installation, reduces costs, and minimises spatial constraints, whilst offering unparalleled flexibility and efficiency.

Compact and cost efficient

Unlike traditional systems that require large, centralised machinery rooms, Azanefreezer factory-built design can be positioned directly at the point of cooling demand. This proximity not only reduces installation and operational costs by eliminating the need for extensive pipework and the associated energy loss but also enhances the overall efficiency of the refrigeration process.


Low-charge design

Azanefreezer 2.0 ensures minimal ammonia usage,combining safety with environmental responsibility,making it an ideal choice for businesses looking to reduce their carbon footprint. This avoids the need for complex valve stations and removes the requirement
for leak detection and ventilation, minimising health and safety concerns.

A sustainable alternative to F-gases

As the world moves away from fluorinated gases (F-gases) due to their high global warming potential,Azanefreezer2.0 presents a timely solution. Utilising ammonia, a natural refrigerant with zero GWP, our systems offer a robust alternative to F-gases which are currently being phased out under the F-gas Regulation.

Azanefreezer Applications

Spiral Freezer

Cold Storage

In-Line Freezer

   Features and Components

Interactive Azanefreezer Diagram
Azanefreezer 2.0 Diagram
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EC Fans
Low power consumption and enhanced airflow efficiency. EC condenser fans and automatic floating head pressure control for improved efficiency
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Packaged Configuration
Outdoor-ready, self-contained unit – no plant room needed.
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Insulation
Robust PIR insulation with alu-zinc cladding.
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Reverse Cycle Defrost
Fast and effective defrosting using a four-way valve (optional). Integrated reverse cycle defrost system melts frost directly from the inside out, ensuring fast, effective and efficient defrost.
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Low Pressure Receiver
Delivers efficient overfeed operation without pumps. Low pressure receiver allows fully wetted evaporators; eliminating wasteful superheat and optimising heat transfer.
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Twin Compressors
Economized screw compressors with high efficiency and redundancy.
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Removable Panels
Allow easy maintenance access around the unit.
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Steel Base Frame
Fully galvanized construction ensures rigidity and long life.
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Electrical Panel
Stainless steel panel with starters for package and coolers.
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Efficient Controls
In-house controls for optimised system performance. Includes PLC, HMI touchscreen, and remote monitoring options.
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Air-Cooled Condenser
Integrated condenser eliminates water use and chemical treatments.

*Award winning ETHOS energy optimisation hardware pre-installed

Ready to future proof your business operations?

Cut costs. Reliable choice. Boost performance

Azanefreezer 2.0 is an environmentally responsible choice for companies looking to align with ISO 14001 standards.

Star’s design engineering team selected the latest and most advanced components from the world’s top manufacturers to ensure each Azanefreezer system is custom-built for maximum energy efficiency and performance.

Benefits

  • Quick installation
  • No plantroom required
  • Low installation costs
  • Low maintenance costs
  • No ongoing water, effluent and water treatment costs
  • High efficiency control including floating head pressure control and EC condenser fans
  • Low total cost of ownership (TCO)
  • Very low charge of ammonia – as low as 0.52kg/kW;up to 96% lower than equivalent pumped recirculation
  • Easy relocation should the need arise

The Azanefreezer 2.0 comes Ethos ready to help plant owners achieve energy and carbon reduction targets. The award-winning data monitoring and plant performance optimisation system can be activated at any time for optimum efficiency throughout the plant’s life.

Ethos combines the expert knowledge of our team with advanced AI, digital twin technology and bespoke algorithms to gain deeper insights into system performance.

By harnessing real-time data, Ethos helps organisations to achieve ambitious Net Zero goals while reducing energy costs.

Ethos technology continuously learns, adapts, and configures millions of data points in seconds rather than months to locate hidden inefficiencies and predict operational issues before they occur.

Designed and manufactured in the UK

Featured Projects

1 / 3

Star Refrigeration Powers Lineage Logistics’ Growth with Eco-Friendly Azanefreezer 2.0


Star Refrigeration has supercharged Lineage Logistics’ new cold storage facility in Great Haddon, Peterborough with its next-gen Azanefreezer 2.0 technology.Designed for maximum energy savings and minimal environmental impact, Azanefreezer 2.0 helps Lineage stay ahead in the race for sustainable cold chain solutions.

2 / 3

Brakes reduces Ammonia Refrigeration charge by 96% with Star’s Azanefreezer.


A leading distribution company has recently upgraded its existing freezer plant system to the modular air-cooled, low charge ammonia Azanefreezer. Located in Bishop’s Stortford, Brakes supplies the UK food service industry with a comprehensive range of fresh, grocery, frozen and non-food products.

3 / 3

Low charge ammonia freezer reduces Blakemans energy consumption by 77%


Star Refrigeration has helped one of the UK’s top food manufacturers, Blakemans to reduce environmental impact and cut energy costs, by transitioning to a high efficiency, natural low charge ammonia Azanefreezer 2.0. In line with their environmental policy, the company appointed Star to aid in their commitment to reduce their Carbon Intensity by at least 55% by 2025.


From large-scale frozen food storage to complex temperature-controlled logistics, our latest case study with Lineage Logistics showcases the Azanefreezer 2.0’s exceptional performance, energy efficiency, and compliance with F-Gas regulations.

tepicon

Exclusive first look at Star Refrigeration’s latest Azanefreezer 2.0

To book an exclusive visit to our factory in Westway, Glasgow and run test the Azanefreezer 2.0 currently in production, call us on +44 141 6387916 or email us aprado@star-ref.co.uk

To learn more about the EcoDesign Directive, which is enacted in UK law via the Ecodesign for Energy Related Products Regulations,  click on CPD Certified Crash Course and email us at cpdcertificate@star-ref.co.uk to get your CPD Certified Diploma.

For a comparison between the Azanefreezer 2.0 vs the European EcoDesign Directive’s Minimum Energy Efficiency Requirements (MEPS) click here
For Information on our US Azanefreezer, visit www.azane-inc.com

Azanechiller enquiry form

Customer Enquiry


Case Studies

Azanefreezer 2.0

Related Case Studies

Reviving aging infrastructure: Lineage Logistics’ successful plant optimisation for a sustainable future

Client: Lineage Logistics
Location: Bellshill
Sector: Temperature Controlled Storage & Distribution
Equipment: Bespoke General
Service: Overhauls & Refurbishments
Refrigerant: Ammonia

It’s estimated that the cold chain accounts for approximately 2–4% of UK GHG emissions. Data obtained from the UK Cold Chain Federation for 425 facilities registered with their Climate Change Agreement (CCA) Scheme during 2018 indicated that their energy consumption was around 3.5 TWh, with 96% of this being electricity. Considering there are almost 700 stores across the UK, the total energy consumed by this sector is likely to be closer to 5 TWh.

Read More

Low charge ammonia freezer reduces Blakemans energy consumption by 77%

Client: Blakemans
Location: Newcastle under Lyme
Sector: Temperature Controlled Storage & Distribution
Equipment: Azanefreezer 2.0
Service: Installation
Refrigerant: Ammonia

Star Refrigeration has helped one of the UK’s top food manufacturers, Blakemans to reduce environmental impact and cut energy costs, by transitioning to a high efficiency, natural low charge ammonia Azanefreezer 2.0. In line with their environmental policy, the company appointed Star to aid in their commitment to reduce their Carbon Intensity by at least 55% by 2025.

Read More

Lineage Logistics

Client: Lineage Logistics
Location: Great Haddon
Sector: Temperature Controlled Storage & Distribution
Equipment: Azanefreezer 2.0
Service: Installation
Refrigerant: Ammonia

Star Refrigeration helps Lineage Logistics meet soaring demand for frozen foods.

Read More

Pinneys Annan

Client: Pinneys
Location: Annan, Dumfries & Galloway
Sector: Food Manufacturing
Equipment: Azanefreezer 2.0
Service: Refrigeration Retrofit & Heating
Refrigerant: R22 to Ammonia

Scottish salmon processor keeping it cool with Azanefreezer for R22 phase out project.

Read More

Brakes

Client: Brakes
Location: Bishop Stortford
Sector: Temperature Controlled Storage & Distribution
Equipment: Azanefreezer 2.0
Service: Refrigeration Retrofit & Heating
Refrigerant: Ammonia

Brakes reduces Ammonia Refrigeration charge by 96% with Star’s Azanefreezer.

Read More