{"id":1658,"date":"2017-11-11T11:56:16","date_gmt":"2017-11-11T11:56:16","guid":{"rendered":"http:\/\/test.star-ref.co.uk\/?post_type=case_studies&p=1658"},"modified":"2023-10-05T10:46:02","modified_gmt":"2023-10-05T10:46:02","slug":"john-lewis","status":"publish","type":"case_studies","link":"https:\/\/www.star-ref.co.uk\/case-studies\/hvac\/john-lewis\/","title":{"rendered":"John Lewis"},"content":{"rendered":"
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Star ensures cool customers at John Lewis store.<\/p>\n

Star Refrigeration has installed a high efficiency cooling system at the flagship John Lewis department store in central London.<\/p>\n

The state-of-the-art Indigochiller system forms part of an ongoing refurbishment by the leading UK retailer at its Oxford Street store. Project Beacon aims to futureproof the 50-year-old building and provide a platform for further development by the John Lewis Partnership.<\/p>\n

Cooling solutions specialist Star has completed the installation of three Indigochillers on the sixth floor roof, each with a 1,000kW capacity. The air-cooled units circulate chilled water for air conditioning, providing comfort cooling throughout the building.<\/p>\n

The John Lewis Partnership was looking to improve the instore environment for shoppers and staff by installing a larger capacity high efficiency cooling system. It was vital that the comfort cooling system allowed year round temperature control, particularly during summer months. As well as an environmentally conscious design, low starting current, quiet operation and minimal maintenance were key requirements.<\/p>\n

John Lewis Partnership Development Engineer Stuart Watson says: “Star\u2019s new roof-mounted Indigochillers are more efficient and will allow us to increase cooling capacity with no increase in electrical demand. They form part of a heating and cooling efficiency drive that will allow John Lewis to meet energy reduction targets and reduce its carbon footprint.”<\/p>\n

Star\u2019s Indigochiller was developed in direct response to proposed F-Gas regulations, which aim to limit fluorinated gas emissions. The unit\u2019s unique design aims to eliminate refrigerant leakage and have minimal effect on the global environment. Star\u2019s research shows the Indigochiller uses only 60% of the energy required by a standard chiller operating on typical load and ambient profiles. This offers end users a significant saving in energy and running costs.<\/p>\n

As well as Star\u2019s new cooling system, additional work on infrastructure at the John Lewis Oxford Street store includes the installation of more efficient boilers, cabling and an electricity substation. Project Beacon also includes new retail departments, restaurant facilities and escalator banks to improve access and open up the building.<\/p>\n

Work on the overall 18-month refurbishment project is due to be completed in Autumn 2007, with trading continuing throughout. It is currently the largest retail project within an operating store in Europe.<\/p>\n

Star\u2019s Indigochiller is a complete refrigeration package housed in one unit. Typical applications include new and retrofit air conditioning systems in the building services and process cooling industries. Ideal for medium to largescale applications, unit capacities range from 250kW up to 1,500kW.<\/p>\n

Each Indigochiller features the revolutionary oil-free Turbocor centrifugal compressor, designed to offer reliable operation and low maintenance. The compressor operates on electromagnetic bearings and uses the synthetic refrigerant R134a. This ensures minimal vibration and noise, even when running at very high speed. The air-cooled unit is available in two noise ranges: Standard and Residential.<\/p>\n

All Indigochiller components are selected to minimise the risk of refrigerant leakage. Each unit features a welded plate and shell heat exchanger, sealed expansion valve and welded steel pipework. Leak detection requirements have been reduced to a few simple checks.<\/p>\n

The Indigochiller features a robust PLC control system to monitor running conditions and optimise efficiency. Additional options include remote access and email alerts via a built-in modem, as well as a direct link to Star\u2019s 24\/7 call out facility.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

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