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UK needs to cut emissions by 78% by 2035 to meet net-zero

Under the original Climate Change Act, the UK pledged to cut net emissions by 80% by 2050. Now, it will need to deliver a 78% reduction by 2035 if it is to meet its long-term net-zero commitment. That is according to the Climate Change Committee (CCC), which has published its Sixth Carbon Budget for the period between 2033 and 2037.

The CCC described the budget as the toughest yet with chief executive Chris Stark saying that the UK will need to decarbonise at a faster pace in the next 30 years if the net-zero target is to be met. Stark explained that the Committee has deliberately opted to ‘front-load’ decarbonisation – more will need to happen in the 2020s and the earlier half of the Sixth Carbon Budget period than in the latter half and the 2040s. Heat, and the broader decarbonisation of buildings, is one of the major priorities identified by the CCC which has based its calculations on a scenario in which 40% of the emissions reductions needed will be delivered using pure-technology solutions.

The new recommendations will see heat supply drastically transformed from its current reliance on natural gas if the country is to decarbonise all aspects of the UK’s infrastructure and economy. The budget has set a mandate for fossil fuel boiler installations to end across the UK entirely from 2033, with fossil fuels phased-out from heating in public buildings by 2025 and in commercial buildings by the following year. It added that these stricter targets to phase out higher-carbon technologies in public buildings would also support a government aim of realising a 50% reduction in emissions by 2032. The 2033 date has been set to take account of the typical 15-year turnover of boiler stock, while also allowing for the scaling-up of supply chains to deploy heat pumps at a mass scale.

The recommendations aim for 37 per cent of public and commercial heat demand to be met by lower-carbon sources as of 2030.  According to the CCC, heat pumps should cater for 65% of the predicted need, 32% of heat should be provided by district heating systems, whether low or high-temperature supply, with a further 3% from biomass by the end of the current decade. By 2050, CCC estimates that 52% of heat demand should be met by heat pumps, 42% from district heat, with hydrogen boilers covering the remaining 5% of national demand.

One caveat, however, was that since the dates operate alongside the deployment of low-carbon heat networks and planned regional rollouts of hydrogen conversion of the gas grid, the phase-out outlined may not apply in any areas designated for these alternatives. This makes a nod to a net-zero that derives balance between pure hydrogen systems and electrification, both delivering decarbonisation of heating. It also highlights the danger of supporting one technology and ignoring another when the pace of development is so much steeper and will continue to be so as we move towards 2050. To this end, the CCC is using what it describes as a ‘balanced pathway’ scenario upon which to base its calculations and that its delivery will require ‘systems change’ and a ‘whole economy approach’ to decisively meet the UK’s legal target of fully eliminating and offsetting carbon emissions by 2050.  Under this ‘decisive’ decarbonisation plan, the CCC has warned that a sizable majority of change must be made within 15 years.

Talk to Adveco about how we can help you create more sustainable heating and hot water applications for your buildings.

Funding Retrofit For Public Buildings

The Government’s Public Sector Decarbonisation Fund is a £1b fund being made available now for the upgrade of public buildings and social housing to make them more energy-efficient and environmentally friendly. Projects with a focus on decarbonisation of heating and hot water will undoubtedly be a priority when granting funds as, according to 2019 figures issued by the Department for Business, Energy and Industrial Strategy (BEIS), heating, cooling, ventilating, and providing hot water and lighting for the built environment still generates 17% of greenhouse gas in the UK.

Part of a wider £3b plan to upgrade the UK’s buildings, the plan has been generally welcomed, as it is hoped to support up to 120,000 jobs across the construction sector, as well as boosting local investment through local job creation.

Designed to aid public sector organisations in England, including central government departments, agencies, local authorities, and especially schools and NHS Trusts. The plan’s intention is to improve buildings’ operational performance, reduce CO2 emissions, raise comfort levels for staff, plus reduce in building-related complaints and maintenance backlogs. This is to be achieved through the specification and installation of energy-efficient and low carbon heating measures.

However, the fund is only being made available for a single year, and since its announcement in July, has raised queries over whether government departments and local authorities have the time or resource to spend this effectively. Facility and energy managers responsible for public sector real estate should already be exploring their options for project design and delivery, not least because of the wider concerns over project timescales in the wake of Covid-19. It is, therefore, crucial to be scoping out retrofit projects as soon as possible.

At Adveco, we have almost 50 years’ experience supporting the refurbishment of public sector heating and hot water systems. While studies show that over the next two decades renewable energy sources (RES) – a mix of district heating, heat pumps, wind and solar energy – will be crucial to the energy supply in the heating market, we would lean towards more technology-open scenarios that not only predict large proportions of heat pumps but also assume the use of gaseous fuels. Just as electricity is becoming greener so too can the gaseous fuels which will contain larger shares of renewable ‘green’ hydrogen gas and other synthetic fuels by 2050. This supports the adoption of a hybrid approach that combines new and existing technologies, which we not only see as more practical but is both cost-effective and less influenced by the volatility of a RES electricity-only approach. The hybrid approach is especially valid when it comes to refurbishing old and inefficient systems, as well as extending viable systems where fresh demands outpace the original scope of the application.

From the latest high-efficiency, ultra-low emission condensing gas and water heaters to electric appliances, sustainable solar thermal and air source heat pumps, Adveco is deliberately positioned can support the introduction and integration of the latest technology. Typically, the latest generation of appliance not only is more efficient, but it can also offer a far more compact footprint, so makes refurbishment simpler, and without needing extensive building work to accommodate plant require less capital expenditure. If systems require scaling up to meet increased demands for heating and domestic hot water (DHW) then refurbishment can quickly become more complex, and if a hybrid system is employed, greater space may be required for the dual systems, as well as additional controls and pipework. Should the availability of space be an issue Adveco can design and build off-site prefabricated plant rooms that make full advantage of unused space, such as flat roofs, to expand capabilities.

If a hybrid heating system is chosen, it offers great advantages for cost-effective control, for example, a hybrid heat pump/gas boiler system is able to reduce the maximum power consumption of a system by smartly balancing the heat generators for greater efficiencies and lower operational costs whilst guaranteeing high system temperatures to ensure the comfort of those still living or working in the building during refurbishment work. And, by selecting the optimal (ecological) heat generator whenever possible (via an energy management system) it can also be optimised for CO2 emissions. Should the building envelope be renovated, the required heating load decreases and the existing gas boiler can take on less of the annual heating work, and it could eventually be put out of operation.

An extra £50m will fund social housing through a demonstrator project for the Social Housing Decarbonisation Fund (SHDF). This UK-wide demonstrator scheme will see grants supplied to upgrade the energy efficiency of over 2,000 of the worst-performing social homes. Again, Adveco has a long heritage designing and delivering multi-occupancy applications for heating and DHW.

To secure climate-neutral building stock by 2050, public sector facility managers desperately need help to achieve practical and cost-effective sustainability. At Adveco we can help with a full-service application design team who can provide an assessment of your properties’ demands and correctly size an application. We can help recommend the optimum appliances to deliver highly efficient systems that provide the best value in terms of capital and operational expenditure, whilst meeting the need to reduce emissions. Our commissioning service also ensures installation is carried out correctly and the system is safe to operate, which then unlocks long-term manufacturer quality warranty service.

If you haven’t started to scope out your project, or need aid, please contact us today about your project.

Making ASHP Work For Commercial Applications – Part 2

The Hybrid Approach

In part one, we considered the challenges and limitations of an Air Source Heat Pump (ASHP) only system, with particular focus on the problems commercial organisations faced when retrofitting existing properties with new heating and hot water applications. In this concluding part, we look at the advantages of adopting a hybrid system approach based on ASHP technology…

A hybrid approach where an ASHP is deployed in a packaged combination with a gas boiler and control system presents an attractive alternative, retaining the element of gas boiler technology that customers are comfortable with. Plus, it also offers better compatibility with existing heating distribution systems and thermal demands of higher heat loss buildings meaning less adaptation is required. There are also technical advantages, such as the ability to optimise heat pump efficiency and switching to the gas boiler at times of network peak.

The facility of two heat sources to meet the demands for space heating and/or hot water is especially relevant for the commercial sector where bespoke system design is often required to meet the particular needs of a project, such as applications with a high heat loss. In this case, the gas boiler can be operated to meet peak demands on the coldest days, allowing the heat pump to be reduced in size compared to the capacity of a pure electric heat pump system.

Installing a heat pump alongside an existing gas boiler, together with a control system also makes sense in retrofit installations, especially, in applications where a relatively new boiler has been installed, which should be highly efficient, and which can be retained for peak heating loads. The key challenge technically is to ensure that the control system for the ASHP and existing boiler operate together efficiently.

In such cases, given that the ASHP does not replace an existing heating system, the driver for installing the system is largely to reduce running costs and make quick gains towards improving environmental performance.

Hybrid systems based around an ASHP are likely to require some system refurbishment in many retrofit installations in order to ensure that a substantial proportion of the annual demand is met by the heat pump (though this is likely to be lower than a pure electric system). Even so, when including the cost of a gas boiler replacement, the cost of refurbishing heating systems for the installation of a hybrid system should be lower than in the case of a single heat pump system. This is due to the reduced heat pump capacity requirement since the boiler can provide higher flow temperatures to meet peak heat demands. When comparing the cost of a heating system refurbishment opting to install a hybrid system versus a ‘pure’ ASHP system a reduction in comparative costs of as much as 50% could be achieved (Source: Frontier Economics).

Once installed, levels of carbon savings are generally slightly higher when allowing for hybrid solutions – suggesting that up until 2030 hybrid solutions could be consistent with meeting carbon targets. Although the average cost-effectiveness of carbon abatement is somewhat lower than in the scenarios which exclude hybrids. These savings are estimated based on comparison with a standalone ASHP, assuming that a hybrid system will use a smaller heat pump with a capacity reduced by as much as one third. For a hybrid ASHP system, expectations will be for the heat pump to meet as much as 75% of the annual heat load, the remainder being met by a gas boiler. This delivers similar operating costs and comparable CO and CO₂ savings at current grid carbon intensity (the reduced heat pump coverage of the overall thermal demand can be compensated by the ability to run the heat pump at closer to optimum efficiency).

Whilst the long-term use of hybrid systems may be perceived as not fully consistent with meeting carbon targets and they can equally be limited by space requirements and noise issues that also affect standalone ASHP installation, there remains a strong argument for their use across the commercial sector.

In the long term, hybrid systems should fall behind pure electric systems in terms of carbon benefits as the grid decarbonises and may become less cost-effective if volumes of gas supplied for the heating drop. But looking out to 2050, innovations in the provision of hydrogen and green gas, using extant infrastructure which currently supports 85% of UK heating, means hybrid systems may prove to be a defining low carbon option. One that provides the means to support the very particular, practical needs of the commercial market with versatile, cost-effective systems, all without sacrificing the drive to lower emissions as part of the process of achieving net-zero.

Read about Adveco’s compact commercial FPi ASHP range and prefabricated packaged systems for a hybrid approach.

Adveco packaged plant room.

Adveco Packaged e-Hot Water System For Low Carbon Hot Water

  • Reduce operational costs by offsetting up to 70% of the energy required by equivalent sized systems. Dramatically reduces CO² emissions
  • Unique low heat intensity specification reduces the threat of scale formation
  • Built-in backup for system resilience, ensuring consistency of service

Hot water and heating specialist Adveco, offers commercial businesses with large hot water demands but space limitations a complete, highly-efficient, low carbon response with its Packaged e-Hot Water System.

This prefabricated all-electric water heating system brings together Adveco’s FPi-9 Air Source Heat Pump (ASHP), an Adveco 200L GLC indirect preheat tank, and Adveco 200L GLE direct electric water heater to provide reliable high-temperature water in a convenient, packaged system housed in a compact GRP housing.

Bill Sinclair, technical director, Adveco says:

“The Packaged e-Hot Water System leverages all the advantages of off-site construction to provide a standardised, resilient, environmentally friendly, low carbon, hot water system that helps reduce both a building’s energy consumption and operational costs across its lifetime.”

Adveco’s Packaged E-Hot Water System makes particular use of the FPi-9 ASHP to provide the system preheat from 10°C to 50°C, supplying 70% of the DHW load.

Offsetting 70% of the energy requirement means the Packaged e-Hot Water System can demonstrate a 47% reduction in energy demands and CO² emissions for the same output of 500,000 litres of hot water each year when compared with a similar direct electric-only system. The reduced energy demand also means operational savings can be added to the capital savings secured during the design, supply, and installation phases.

A completely new specification that lowers the heat intensity, without detrimental effect to the demands for hot water, means the Packaged e-Hot Water System is also more resistant to scale, reducing maintenance demands.

The GLE also has an additional 6kW immersion heater to provide backup in case of failure of the lead heat source for sites where hot water is business critical. The Adveco designed control system monitors the heat sources, and in the case of failure, it can automatically activate the backup system.

Adveco’s Packaged e-Hot Water System is ideal for a wide range of commercial properties with regular hot water demands such as restaurants and boutique hotels, offices, schools, and light industry. The system is also perfect for both new builds or refurbishment where space is at a premium.

Adveco Packaged E-Hot Water System

Adveco Packaged E-Hot Water System for low carbon hot water.

Technical Features

  • FPi-9 ASHP supplies 9kW at 7°C outdoor temperature
  • Nominal 18kW of heat is input to the domestic hot water (9kW ASHP and 9kW electric element)
  • Sized to meet the typical needs of a larger facility and can supply 314 l/peak hour. Based on a 12-hour daily operation and one peak hour, this equates to 1370 litres of hot water per day

Adveco 2020 Product Overview Now Available

The 2020 Adveco Product Range brochure serves as a quick reference document covering a wide range of products and services provided by Adveco and A.O. Smith. The current range incorporates commercial hot water and heating equipment including: condensing gas water heaters; storage tanks, oil & electric water heaters; solar thermal; boiler cascade systems; stainless steel cylinders, thermal storage tanks, carbon steel buffers, combined heat & power (CHP); Air Source Heat Pumps (ASHP). These technologies are the building blocks for Adveco’s bespoke packaged plant rooms and system offerings. All supported by our applications and field engineers who provide expert commission services, warranty maintenance and training.

If you are seeking support in the design, supply, commissioning or servicing of business-critical hot water, heating and power then this brochure is a useful tool to have to hand.

You can download the brochure now.

Adveco Showcases New Hybrid Packaged Plant Rooms at CIBSE Build2Perform

  • Accelerate project timescales with offsite constructed heating, hot water and low carbon energy systems
  • Introducing packaged hybrid systems that help meet new carbon targets
  • Understand whether continued investment in gas infrastructure is still viable

Hot water and heating specialist Adveco, will be exhibiting its first hybrid packaged plant room systems for heating and hot water at CIBSE Build2Perform November 26th & 27th at Olympia, London. These bespoke designed systems, built into a weatherproof enclosure, not only maximise available space on a commercial project but also deliver system resilience, help reduce a building’s energy consumption and reduce operational costs.

Adveco’s plant rooms leverage technology from a range of partners including A.O. Smith, Cosmogas and cogeneration specialist TOTEM. Appliances are combined with Adveco’s own in-house designed control systems and industry recognised heat recovery technology, such as the HR001, a standalone Heat Recovery Unit providing a convenient, packaged unit to recover refrigerant system waste heat.

For the first time, Adveco will be showcasing a hybrid application that combines the new Adveco FPi Air Source Heat Pump with an A.O. Smith Innovo condensing room-sealed gas water heater and controls, enabling commercial sites to achieve lower cost heating or cooling.

An all-electric packaged plant room will also be on display alongside the popular MD high efficiency condensing gas boiler.

MD high efficiency condensing gas boiler - floor standing or wall mounted.Compact and lightweight, with low CO and NOₓ emission levels, MD is perfect for use in conjunction with an air source heat pump as part of a hybrid system, providing both sustainability and the operational responsiveness required by larger-scale commercial systems. With multiple load-balanced heat exchangers in a single chassis, MD offers peace of mind with built-in redundancy, all backed by a seven-year warranty on all parts and labour when commissioned by Adveco and a 10-year warranty on both the heat exchangers and the pre-mix burner.

Adveco’s Application Engineer Simon BennetOn Wednesday afternoon, Adveco’s Application Engineer Simon Bennet will be helping designers facing the decision of whether to adopt all-electric for new buildings or outlay for a gas supply ready for conversion to hydrogen. A decision that could affect future carbon emissions and running costs for the lifetime of the building. Simon will outline the practical considerations to help decide whether the cost and the need to reduce carbon make continued investment in gas infrastructure viable for commercial new build projects. You can register for this session by visiting the Build2Perform Seminar page.

Taking better care of heating and hot water

Adveco considers how the healthcare sector can take better care of heating and hot water systems for a cleaner future. Read the article on Health Business

Adveco 2019 product brochure banner

Adveco 2019 Product Overview now available

For almost 50 years, Adveco Ltd. and sister-company Adveco (AWP) Ltd. (trading as AO Smith Water Heaters) have been the trusted specialist providers of bespoke hot water, heating and power systems to the building services industry.

Adveco brochure - product overview 2019.

Adveco 2019 Product Brochure

Adveco continues to innovate today, working in exclusive partnership with Europe’s most reputable manufacturers to design, supply and support more than a thousand commercial boiler, hot water, solar thermal and cogeneration systems every year. The 2019 Adveco Product Overview Brochure serves as a quick reference document covering a wide range of Adveco and A.O.Smith commercial hot water and heating equipment including: condensing gas water heaters; storage tanks, oil & electric water heaters; solar thermal; boiler cascade systems; stainless steel cylinders, thermal storage tanks, carbon steel buffers, combined heat & power (CHP); packaged plant rooms and bespoke system offerings.

If you are seeking support in the design, supply, commissioning or servicing of business-critical hot water, heating and power then this brochure is a useful tool to have to hand.

Hard copy versions of the brochure will be available from December, please get in touch if you wish to request a copy. Or download the digital version now.