Heat Pumps Today

Info For more information and to download the HHIC whitepaper, visit: https://www.hhic.org.uk/uploads www.acrjournal.uk/heat-pumps 15 T R A I N I N G 3 Trailblazer) proposal is now approved. This training course defines the key knowledge, skills, and behaviours required of the occupation, and encourages participants’ commitment to decarbonisation. Likewise, the Plumbing and Domestic Heating Technician course provides an overview of all heating technology with one chosen specialism, this might be environmental technology, for example. It is vital heating engineers proactively engage in low-carbon technologies, and this sort of training will prepare them for consumer demand of these products and forthcoming legislation. The extensive retraining of the installer base will be necessary for a successful transition into low-carbon technologies. It will guarantee correct assessment of existing systems, on top of identifying appropriate products and system improvements, including installation, design, and system upgrades. All low- carbon technologies require this upskilling of expertise to ensure environmental, and energy, savings are realised. Astandardisedassessment adopting the following process: START Customer planning for low carbon heating& hotwater system * 06. Typical Heating Systems in the UK This section covers the different installed systems in the UK housing stock and identifies all potential areas where the system eႈciency and carbon emissions could be improved. Gas &ombination Boiler System ± c. 1 Million Installed Combi Set Up Overview InstalledBase 2020Volume c.15m (c.60%on gas properties) 1.32m Pros Cons • Compact size • Efficiency • Can be cheaper topurchase • Hotwaterondemand • 1ot suitable for larger homes withmultiple bathrooms requiringhotwater at the same time • 1eedsgoodmainspressure System Type Boiler Type SystemComponents Combi Combi Control Radiator TRV Pipework )ilter Cleaner and inhibitor • Installation • Commission& Setup • Servicing Maintenance % replaced duringnew installation 100% 80% 25% 25% Boiler swap2% Boiler change andnew location 15% 90% 100% • Benchmark completion, customer handover. (x%) • Serviceand maintenancepart ofwarrantyT&C’s There are several options when making an intervention due to product failure with a home’s incumbent combinationgasboiler system. /space a , l T HomeAssessment Including heating& hot waterappliance types&home insulation measures (useEPC ifup to date) DomesticHotWater Dwelling demand to be calculated. To include items such as controls and::H5etcSpace forCylinder Heating Heating system to be evaluated. To include roomby room heat loss calculations,pipe sizes, controls radiatorsand inline filteretc.Space forheatingequipmentoptions BoilerSystem2ption -Heating BoilerSystem DH: - Instantaneous combi (spec toboiler plus) BoilerSystem Systemboiler indirect cylinder HybridSystem SystemBoiler cylinder heat Mump 5eview allpotential optionswith the customer - selecting themostappropriate for their needs Actions Developa practical installer heating system installationguidance tool Incorporate this intoBenchmark to ensure continual data recording andmonitoring HybridSystemwith combi hp (ifnoeconomic space for cylinder etc) HybridSystem2ption -Heating HeatPumpSystem2ption -Heating HeatPumpSystem HP IndirectHPCylinder Emitter (radiator circuit Evaluate if existingoutput requirement can bemetat 50M:Tor lower Assess pipework -Evaluate Àow ratepressure dropnoise evaluation andupdateandnecessary including replacingmicro bore" Heating Hot Water 12 -notpossibleor customeroptout <es - possible or customer option 12TE: If fabric improvements required - insultationupgrade via suitable goverment funded scheme" (useEPC if up todate) 12TE:Energy, cost& carbon saving potential identified based on calculatedM:T.)urther improvements can be assessed ifM:Tnot low enoughby returning to start ofprocess and further improving fabric levels. M:T50or less M:T6070 'HW -HP Indirect storage 1. IndirectHPCylinder size and spec 2.Cylinder location space 'HW - std indirect storage (forsystemor regularboiler CheckCylinder size and spec -upgrade if necessary (system spec - toboiler (system )) WaterTreatment Specify cleaning regime for system dependent on radiator replacement, speficy inhibitor and volume requirement, includebiocide for systems below 65c Controls 5eview controloptions includingT59’s Thisdiagram isgeneralguidance anddoesnotpreclude future innovation TYPI&ALHEATINGSYSTEMS IN THEUK // 23 // HEATINGSYSTEMREPLA&EMENT INSTALLATIONS ±PRO&ESS 22 e c ld e Introduction heating systems are dependent on hot water generated by a boiler ump. This water is then circulated with a separate pump through to a home’s radiators or underfloor heating. These systems can torage tanks thoughmanyusecombinationboilers toprovide instant r.Thereareover26millionhomes thathaveahydroniccentralheating n the UK. for centralheating inUKhomesbegan in the1970s.Asa result,manydomestic systemsarenow cient, in need of replacing or significant changes to meet carbon budget targets and the UK’s net 0deadline.Heating appliances are often replaced -mainly through age orahomeowner’sdecision However, the system component parts, such as radiators, cylinders and controls are typically left due to cost, inconvenience or complexity. This is a problem, not least because an efficient heating er system makes a significant contribution towards tackling climate change. Greater awareness is tohelp the public understand the energy savings these often-forgotten improvements can deliver. y typically focuseson replacingappliances formoreefficientmodelswith loweremissions.But there ystem improvements that can be made to prepare home heating systems for a low-carbon future. xamines the UK’s heating landscape, how industry can begin the process of improving domestic the importance of increasing insulation in homes to reduce energy demand. Seeking to provide iled view, the paper also looks at possible gaps in policy, regulation and guidance and questions ncial incentives could reward installers for additional activities, like heat loss surveys. Perhaps ant of all, it questions what role government can play in facilitating positive change within domestic hotwater. or reading. 03. Heating Systems by Number Understanding what heating systems are currently installed in UK ho e is critical for any large-scale change. This section examines the different types of housing stock together with current sales figures by system type. Looking at the market in this way can determine the current favoured system and the types of environment requiring change in order to accommodate upgrades. TheUK& I.Eheatingmarket salesby fu ltypefo 2020 is shownbelow. Figure 1: Sales of different generic system types in U.K. Homes in 2020 (Source:HHICAnnualHeatingMarketData) UK Sales 2020 % Wall-hungGasBoilers 1,558,000* 92.6% FloorStandingGasBoilers 4,000 0.2% Heat umps (Ground Source/ AirSourceheatpumps) 27,000 1.6% DirectElectric eating 26,000 1.5% OilBoilers 55,000 3.2% SolidFuelBoilers 12,000 0.7% Total 1,682,000 *1.22million combination boilers, 150,000 system boilersand 190,000 open vented (regular) boilers An indicativeexample that splitsnew buildand retrofit sales is shown in figure 2: HEATINGSYSTEMSBYNUMBER // 9 CTION UK domestic heating and hot water systems and how to prepare them for a greener future Heating Up to Net Zero Position of Policy In its research paper Heating Up to Net Zero, the HHIC discusses policy changes that might be beneficial to the future of low-carbon heating success. While customer, and installer, understanding of the operation of decarbonised heating systems is fundamental to the success of these renewable alternatives, policy must be in place to support them. The HHIC suggests a British Standard Code of Practice for the design of heating systems should be produced to help support training and guidance for building regulations. Further, a review of current British standards might provide additional confidence in the suciency of information and guidance available for the transition to low-carbon heating. Governmental support of initiatives supporting the re-training of the current Gas Safe installer base is critical to transitioning to low-carbon systems. Likewise, support for training new entrants through recognised, staged- development courses such as an accredited certification scheme can provide installers, and consumers, with the confidence to decarbonise heating systems. Finally, a combined eort between government, industry leaders, and the existing and future workforce will determine how fast, and eectively, the UK can adapt to the transition towards decarbonised heat. The industry has to change before any progress on emissions can be made.