COOLING | NEWS Sorted at Postmark Metropolitan saves on capital cost of heating and cooling network District energy network specialist Metropolitan has been awarded the contract to adopt and operate the district heating and cooling networks for Taylor Wimpeys flagship 681-apartment Postmark residential development, in Farringdon, central London. Metropolitan says early collaboration has enabled it to work with the developer and its consultants to streamline the design of the district heating and cooling infrastructure, significantly reducing the capital cost of the project. The Postmark is in a prime location shared with the Royal Mail sorting office at Mount Pleasant. Modernisation of the 129-year-old mail centre in 2014 freed up land for the development Redesigning of the district heating and cooling network presented a number of Fujitsu adds to chiller line-up Fujitsu General Air Conditioning has extended its UK range with the launch of its Clint and Montair liquid chillers. These new offerings are the result of its product development partnership with Italian group GI Holdings. The new products cover air-cooled and water-cooled liquid chillers, with heatpump and cooling-only models available. Air-cooled heat pumps range from a compact 15kW model for small commercial applications using inverter scroll technology, to 1.6MW screw-compressor models forlarge commercial and industrial projects including options of producing hot water upto 60C. Water-cooled heat pumps range from 49kW to 1.25MW, with cooling-only variants using Turbocor centrifugal technology to extend ranges to 3.9MW capacity. Close-control applications are being supplied with Montair air-cooled, watercooled and chilled-water variants, covering a range of 9kW to 155kW, including top and bottom discharge options. Integrated server cabinet cooling is also available. Open-protocol communication is included across the range, with remote webmonitoring packages supplied as standard on Turbocor models. Dry coolers, hydronic modules and remote condensers complete the product line-up. For more details, visit www.fujitsu-general.com/uk/ or email sales@fgac.fujitsu-general.com engineering challenges for Metropolitan. With the two phases physically separated by a public highway, the original intention was to have two energy centres and two distinct heat networks serving the new homes. Installing pipework sleeves under the highway and eliminating the need for substations has rationalised the design, enabling a single gas-fired combined heat and power energy centre to serve the entire development. This has resulted in capital cost savings and reduced the infrastructure footprint. Metropolitan also established that the most efficient design for providing cooling was via two electric chillers and two separate networks, each serving half of the development. It estimates that this district energy networks solution will save more than 30% on carbon emissions compared with a traditional solution. Prepare now ahead of refrigerant ban warns Defra End users have been warned by Defra to take urgent action ahead of looming bans on a range of widely used refrigerant gases. Under new F-Gas rules, several gases including R404A, R507 and the R22 replacement R422D will be banned from use in many medium and large systems from 1January 2020 because of their high global warming potential (GWP). There will be a total ban on virgin high (more than 2,500) GWP refrigerants in systems of 40 tonnes CO2 equivalent or more in servicing and refilling systems where the charge breaches a certain limit 10.2kg in the case of R404A. Smaller and hermetically sealed systems will be unaffected, however, and reclaimed or recycled refrigerant can still be used until 2030. Regulators in England and Scotland have the power to issue civil penalties of up to 200,000 for breaches of the F-Gas regulations. Enforcement notices and fines can also be applied in Northern Ireland and Wales. A leaflet Refrigeration and freezer equipment: Changes to refrigerant gases that can be used has been produced jointly by Environment Agency, Scottish Environment Protection Agency and Northern Irelands Department for Agriculture, Environment and Rural Affairs. It is available at bit.ly/CJJun19cooling 42 June 2019 www.cibsejournal.com CIBSE Jun19 pp41-43 Air Con News AS.indd 42 24/05/2019 17:08