Star Refrigeration, the UK’s leading industrial refrigeration engineering company, has completed the manufacture and install of a new cold store facility for Lineage Logistics at their new site in Great Haddon, near Peterborough. This project consists of 15,000 pallet spaces of frozen warehouse capacity supporting Lineage’s plan for growth and the industry’s need for consolidation.
Lineage is the largest, most innovative temperature-controlled logistics provider in the world with over 1.4 billion cubic feet of storage capacity. They boast an infrastructure of 200 facilities in seven countries across North America, Europe and Asia.
The Peterborough development has seen the installation of a 75,000m3 cold store plant with a refrigeration capacity of 600kW. Results from recent energy performance data analysis for the site indicate that the Azanefreezer 2.0’s annual energy usage is one-third of that of UK’s ‘Best Practice’ guidelines, meaning Lineage is set to cut carbon emission by 453 tonnes of CO2 per year compared to the UK’s ‘Best Practice’ guidelines.
According to the specifications provided by STS, Lineage required a 600kW refrigeration system, which was designed to achieve a nominal storage design temperature of -24 degrees Celsius. Running costs were key to the plants design, with STS specifying a minimum condenser surface of 4,800 m2 to achieve optimum condensing pressures throughout the year. Evaporator absorbed power was also limited to 35kW, while the condenser absorbed power should be equal to or less than 30kW in order to maximise efficiency and reduce electrical costs.
Star Refrigeration were able to secure the contract through their offer of two independent AF300-S Azanefreezer 2.0 ammonia refrigeration plants. In order to adhere to STS’s technical specification, Star modified its existing AF300 unit by retaining the existing low-pressure receiver and compressors, but upgrading the unit’s condenser and base frame to a larger size. This allowed it to achieve a higher efficiency than that required by the tender, thus reducing running costs.
The Azanefreezer 2.0 solution delivered a number of different advantages, with the biggest draws concentrated in its efficiency, affordability and lower running costs. The use of a larger condenser allowed the facility to operate on 32.2kW for its evaporators – an 8.1% improvement on STS’s requirement-, and just 12.5kW for its condenser – a remarkable 58.3% improvement.