HEAT NETWORKS; HEALTHCARE SPECIAL FEATURES This month: CP3 code of practice; Plymouth heat network; water quality in heat networks; CIBSE Healthcare Group reports Manchesters Civic Quarter heat network Network predicted to save 3,100 tonnes of carbon emissions in first five years The Tower of Light contains the energy centres flues Construction work has begun on Manchesters 20m Civic Quarter heat network (CQHN), which will generate low carbon power, heat and hot water for the city. It will initially serve six major council buildings, but with the potential to expand and connect further buildings across the city centre in the future. The network is part of Manchesters strategy to become carbon neutral and climate resilient, and to achieve zero waste by 2038. It is projected to save more than 3,100 tonnes of carbon emissions in its first five years of operation, according to delivery partner Vital Energi, which claims that the energy centre will become more efficient as additional buildings are connected. The energy centre, which will be constructed close to the Manchester Central Convention Centre, will contain a 3.3MWe CHP engine and two 12MW gas boilers. It will generate Swep supplies BPHE units for innovative Copenhagen project The Lyngby CHP plant at the Technical University of Denmark (DTU) has been connected to the regional district heating system that serves Copenhagen, with brazed plate heat exchanger (BPHE) manufacturer Swep involved in the innovative project. Much of the heat supply for the Lyngby plant is provided by Vestforbraending, the largest waste-management company in Denmark and the biggest producer of district heating based on waste incineration in northern Europe. Vestforbraending, which is owned by 19 local authorities, needed to increase its capacity to serve the planned expansion of the local district heating area. Incineration of waste at its CHP plant is used to generate energy, with 20% becoming power and 80% used for district heating. Towards the end of 2017, it leased an area at Lyngby CHP plant, to establish a heat exchanger station and a transmission line into the plant, enabling the associated pump system to exchange heat via an accumulation tank. Swep provided eight fully loaded B649 BPHE units in parallel design, meaning four lines with two B649 units in series, with the maximum number of plates and a full load capacity Vestforbraendings CHP plant in Copenhagen of up to 51MW. The units transfer heat from to Lyngby CHP plant for distribution, via the storage tank, into the DTU campus and the areas of urban development. The Lyngby CHP plant can also sell surplus energy back to Vestforbraending. The system will be able to operate at full load by the end of 2019. Swep has launched a new range of BPHEs using a Sealix coating a SiO2-based, thin-film technology that helps prevent corrosion and keeps tap-water applications running efficiently for longer. electricity and harness the recovered heat from this process for distribution via a 2km district heating network, which will supply heat and hot water to the buildings. Designed by architect Tonkin Liu, the energy centre incorporates five flues in a Tower of Light, which has been designed to become a sculptural landmark for the city and a symbol of its aspiration for low carbon energy. The scheme has been part-funded by a 2.87m grant from the UK governments HeatNetwork Investment Project (HNIP), withManchester City Council being oneofthefirst local authorities to receive suchfunding. The first buildings to be connected to the network will be Manchester Town Hall and the Town Hall Extension, Manchester Central Library, the Central Convention Centre, Bridgewater Hall and Heron House. Work on the Civic Quarter heat network is scheduled to be completed by the end of 2020. For more information on the project, visit www.vitalenergi.co.uk Large installation design made easier Hysopt has launched a new version of its cloud-based design and simulation software for large heating and cooling installations, with the latest release focusing on design and optimisation for citywide heat networks. The Belgian software company claims that the softwares new features make it easier and faster for engineers to create and simulate accurate, hydraulically optimised designs, taking into consideration complex combinations of low carbon energy sources and endbuilding scenarios. According to Hysopt, it allows users to draw heat networks for cities and other large areas on top of a city map. The software then automatically calculates the length of the pipes that must be laid. To avoid pipe oversizing, it will provide a weighted average for the different heating applications in the district heating network, based on the diversity calculations. It can also automatically calculate flows, pressure drops and water temperatures for each building. The heat load can be configured using heating and hot water setpoint profiles, for example to allow for different occupancy profiles in flats. www.cibsejournal.com August 2019 33 CIBSE Aug19 pp33 Heat News.indd 33 19/07/2019 14:35