SPECIAL FEATURES COMMERCIAL AND INDUSTRIAL HEATING AND COOLING This month: Baxi s Jeff House, natural refrigerant CO2, 80 Charlotte Street retrofit, cost model London mayor targets 40% cut in building heat demand Energy-storage measures central to London s new carbon-reduction plan Around one-fth of Londons substations will need to be upgraded by 2030 without demand-side response and storage measures, according to Sadiq Khans more ambitious blueprint to cut the capitals emissions to net zero. The Mayor of Londons new carbonreduction pathway sets a target of reducing the capitals residual emissions to 22% of 1990 levels by 2030, compared with his previous goal of 40%. London s pathway includes a nearly 40% reduction in the total heat demand of the citys buildings, entailing insulation upgrades for more than two million homes and 250,000 non-domestic buildings. It also requires 2.2 million operational heat pumps, 460,000 buildings connected to district heating networks, and a ban on fossil fuelpowered cars and vans by 2030. The electricity grid reinforcement required in the capital will primarily depend on the London s aim is to reduce its emissions to 22% of 1990 levels by 2030 rate of deployment of electric heating and mix of technologies, according to a report by consultancy Element Energy. The level of deployment of demand-side response and energy storage will also have a signicant impact on how peak demand for electricity is managed and the scale of grid upgrades. Without such exibility measures, up to 50 of Londons 235 primary substations will need to be reinforced by 2030, a number that will rise to 125 by 2050, Element says. The targets will save 150 megatonnes of CO2 emissions by the middle of this century. Diffusion supplies fan coils to London development Diffusion has supplied 980 fan coil units (FCUs), of varying types and design, to One Bishopsgate Plaza at 150 Bishopsgate, London. The 41-storey, mixed-use development features luxury residential accommodation, a ve-star hotel, plus retail space and restaurants. Diffusions Highline FCUs were installed by contractors GBE in the hotel and retail areas of the build. Its Highline 270 waterside control FCUs are tted with high-efciency EC/DC motors and boast a specic fan power as low as 0.16W/l/s. Hitachi s eco-friendly R513A Samurai chiller Hitachi Cooling & Heating has expanded its portfolio of water-cooled and condenserless chillers, with an eco-friendly R513A option on the RCME-WH1 and RCME-CLH1 Samurai L chillers. The new option is designed to meet the EU F-Gas regulations. Using low-GWP R513A as an alternative to R134a reduces the global warming potential by 56% and cuts the amount of refrigerant charge used in each unit, while retaining the same cooling capacity. Heat networks get 19m boost The government is putting 19.1m into ve new heat networks in England, as part of its Heat Networks Investment Project. There will be one each in Liverpool, London and Worthing, and two in Bristol. Heat networks currently provide approximately 2% of the UK s heat demand, but could meet around a fth by 2050. Government-funded projects currently being developed include Leeds City Councils 16km district heat network, Cardiff City heat network in South Wales, spreading across the Cardiff Bay area, and Newcastle Universitys district heat network on its city centre campus. Pairing electric boilers & heat pumps ensures better designed solutions than using heat pumps alone. www.sav-systems.com/eb-cibse HYBRID www.cibsejournal.com February 2022 33 CIBSE Feb22 pp33 Specials News.indd 33 28/01/2022 16:22