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Mike Nankivell, marketing director for the UK Daikin Distributor, Space Air Conditioning plc, comments on the latest VRV development from Daikin Europe. 

“The VRV IV heat recovery system makes huge advances in climate control efficiency. Not only is it up to 28% more efficient than the previous generation of VRV, it is more flexible and can be installed faster than any other heat recovery system available.”

“Daikin’s VRV IV heat recovery system is able to integrate heating, cooling, ventilation and hot water, recovering “free” heat from areas requiring cooling and using it to heat other areas and provide hot water. Daikin Europe calls it “The most Sustainable HVAC System in the World”.

Focus on Efficiency

Daikin Europe’s three-pipe VRV heat recovery systems were already considered the most energy efficient on the market but VRV’s fourth generation features important new innovations outlined below, which “fine tune” the focus on efficiency with remarkable results:

1. Variable Refrigerant Temperature technology
2. Continuous heating during defrost
3. The VRV configurator

1. Variable Refrigerant Temperature technology enables the refrigerant temperature to be adjusted to match heating or cooling demand and the outside temperature, reduced power consumption results in an improved operating efficiency of as much as 28%. Comfort is also enhanced because variable refrigerant technology enables cold draughts to be avoided,

2. The defrost cycle can result in reduced indoor temperatures at a time when this is undesirable. VRV IV’s continuous heating during defrost avoids this issue and maintains comfort levels when the defrost cycle is activated.

3. The VRV configurator software enables the system to be “set up” off site, saved to a USB and simply uploaded at the commissioning stage. This feature greatly simplifies both the installation and commissioning of Daikin VRV systems.

New Multi-Port BS Boxes

Daikin’s VRV systems are renowned for being the most flexible available. Modular by design, VRV be adapted to fit any can size of building and reconfigured easily if internal layouts change over time. To enhance this flexibility even further, Daikin has introduced new multi-port BS boxes. The new multi-port BS boxes have up to 16 ports and are the lightest and most compact on the market. These can greatly reduce installation times compared with installing single BS boxes. To complete the new VRV package, Daikin Europe’s Intelligent Touch Manager offers comprehensive climate control and mini BMS facilities whilst also being able to link with third party systems.”

Concluding Mike Nankivell observed. “As one of the oldest of Daikin Europe’s network of independent distributors, Space Air is accustomed to the continuous development of Daikin products, yet even we were impressed with the improvements that have been achieved with VRV IV. We are also delighted to see the key 4^th generation features being extended to the entire VRV portfolio at a time when operating efficiency is recognised as a critical factor in reducing the carbon footprint of our air conditioned buildings.”

For more information please call Marketing on 0333 0069 755 or email marketing@spaceair.co.uk.

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Clamp-on to a New smarter clamp-on solution to heat/energy metering from Micronics for significant installation savings and simple, accurate measurement from outside the pipe!

Measuring the heat/energy consumption of hot (LTHW) and chilled water services to monitor, control and manage energy consumption is a key area in building services and energy management. But the installation process including system drain down, pipe cutting etc has always been a significant cost and barrier to wider application of sub-metering. At last a solution has arrived from the longest established manufacturer of clamp-on, ultrasonic meters the U1000 HM heat/energy meter from Micronics. Building on their many years of experience and success in this area, Micronics has now developed a best value clamp-on heat/energy meter to compliment its successful U1000 clamp-on flow meter and facilitate the wider use of clamp-on ultrasonic flow measurement for water sub-metering and heat/energy measurement.

The U1000 HM is a simple out of the box, onto the pipe heat/energy metering solution with no programming or specialist engineering required! All you have to do is clamp the unit to the pipe, select the pipe size, release the sensor clamps, secure the pre-wired, clamp-on PT100 flow and return temperature sensors and connect power to the pre-wired cable provided. Yes it really is that simple because Micronics have listened and simple installation is a key design feature. Another cost-effective alternative to expensive in-line meter installation from Micronics with no drain down or cutting of pipes required plus dry servicing, providing minimum downtime and maximum availability!

The U1000 HM is a clamp-on, transit time, ultrasonic flow meter plus PT100 temperature sensors designed to provide accurate measurement of liquid flowing within a closed pipe plus the flow and return temperature difference to calculate the heat/energy load, without the need for any mechanical parts to be inserted through the pipe wall or to protrude into the flow system. It takes just a few minutes to install and there is no need to shut down flow or drain the system! And its Modbus compatible, so it can be used as a standalone meter or an integrated part of your aM&T or BEM’s system.

So if you need to meter the heat/energy load of hot (LTHW) or chilled water services as part of your energy management strategy or building services, for retrofit or new build applications, the U1000 HM should be a must consider solution! For further information call: +44 (0)1628 810456 or visit www.micronicsflowmeters.com

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With a water vapour resistance of 0.03 MN/sg, Klober Permo® air is approved by the NHBC for use without supporting high level ventilation. The BBA-certified, air-open underlay has consistently proved to be the most breathable membrane available and prevents formation of condensation in the roof space during a building’s critical drying out period. Permo air has also been independently tested for wind uplift by the BRE which found it to be suitable for use up to Zone 5 on the recently introduced BS 5534 wind speed map (with laps taped or battened in zones 4 and 5).

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As part of Austin Smith Lord’s design for the full renovation of Liverpool Central Library, the original zinc roof of the Picton Reading Room, built in 1879, had to be replaced. 800m² of VMZINC® QUARTZ-ZINC PLUS^® was installed over much of the original Victorian boarding, a combination of batten cap and standing seam panels being used to satisfy English Heritage requirements for the Unesco World Heritage Site. Details were replicated with the help of the VMZINC heritage service in a design which has provided an energy-efficient, sustainable five storey building to replace those built post-war following Second World War bomb damage.

The roof terrace has been highlighted as ‘star’ of the project, not least because of the spectacular views it provides and the added visual aesthetic it gives of the rotunda roof and the Grade II-listed neo-classical façade.

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Anyone who hasn’t been to Cardiff recently will be pleasantly shocked – particularly if they head towards Penarth and the waterside developments that are springing up around the city. Close to the new International Sports Village which will boast some of the finest sporting venues in the UK when they are completed, you will find Cardiff Pointe – a superb development of homes and apartments, close to the sea, yet just a reasonable stone’s throw from the centre of this revitalised city.

The first two phases of Cardiff Pointe are being built by Kier Group on behalf of Figurehead Homes and are the result of exciting design work undertaken by the project team on the development – led by Cardiff based architects Scott Brownrigg.

Built to a very high specification, a visit to the showhome close to the marketing suite begins to reveal why this development is already attracting huge interest both as a place to live and a place to invest in. The interiors have been carefully thought through to provide light and airy space with quality fixtures and fittings and a design theme that flows through the whole home with strong sharp lines and edges – through the doors selected to the radiators – the Compact with Style designer radiators from Stelrad. The first two phases at Cardiff Pointe will provide 98 units – a mix of three storey townhouses and apartments – and Stelrad is providing around 700 radiators for these homes alone.

The selection of single panel radiators with a single fin, is an interesting one, design driven – to ensure good looking, slimline radiators that sit close to the walls – but this is also in line with the heating requirements of new homes that are superbly insulated and designed to retain heat particularly in the colder months of the year. The sizes of the radiators in each room also highlight the increased energy efficiency and effectiveness of modern radiators – highlighting the issues with the massive elderly radiators that tend to adorn pre-2000 built properties.

Pre-Construction Manager for Kier Living is Shane Jay: “I was aware of the Stelrad range before we finalised the radiator choice and I knew that they would provide the subtle architectural feel we needed, combined with good value, providing affordable designer styling for any room on the development and I was surprised how easily that decision was agreed to and ratified by the team. Everyone around the table could see that the flat fronted designer radiators with the neat horizontal line would blend perfectly with the lines throughout the homes, in every room.”

Stelrad’s Business Development Manager for the south of Wales is David Last: “When Shane and I were talking about the development, looking at the architectural model of Cardiff Pointe we talked about the need for a higher spec for the radiators than in traditional new build. It was clear this was a special development and needed special treatment and when Shane said ‘This is a job for Compact with Style’ – we both knew this was the answer to one of the challenges the development was setting us….and now we can see them on the walls of the homes that have been built they are exactly right. It was a great choice.”

Compact with Style is just one of Stelrad’s designer radiator options, that are increasingly being specified by architects and building designers when standard panel radiators do not meet the higher values demanded of top notch developments up and down the country. To see more about Cardiff Pointe, go to www.cardiffpointe.co.uk. For more information on these stylish radiators, simply head for www.stelrad.com – you’ll be surprised how far radiators have come…..

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The brand new Abbey Sands luxury mixed use development has brought a new glow to the Torquay waterfront – but its residents are also glowing – because of some superb energy efficient designer radiators from leading radiator manufacturer Stelrad – selected to share the heat in the new building.

Designed by Kay Elliott Architects for Wiltshire-based developer Havard Estates, Abbey Sands has been built on the site of the former Palm Court Hotel.   The development consists of twenty seven apartments, a coffee shop and 3 restaurants. Abbey Sands, is a stunning new 4500m² luxury mixed usedevelopment on the English Riviera. The six-storey scheme is situated on a prominent waterfront location in central Torquay with views across the bay towards Berry Head. The design is influenced by the art-deco style of the British seaside, and presents a contemporary interpretation of the ‘Riviera style.’ The development is the result of significant commitment from Havard Estates which has recognised and encouraged the potential of this idyllic site and the design potential for maximising on the landmark nature of this exciting new development. Abbey Sands was recently awarded Best Mixed Use Development in the UK for 2014-2015 at the UK Property Awards.

Plymouth-based ECS – Electrical Contracting Services – was the M & E contractor on the project, and through careful negotiations with the main contractor ECS was able to value engineer the project, maintaining the high standards set by the architects throughout the development.

The first and second floors of this prestigious development will accommodate 5 star, luxury self-catering apartments with sea views across Torbay. On the third and fourth floors there are twelve modern, 2 and 3 bedroom apartments whilst on the top floor are two large luxury penthouses with breath-taking views over the bay.
The interiors, which were also designed by Kay Elliott, feature the very best in contemporary interior design. Detail is key which is where the use of designer radiators to provide the heating for the development comes in. Despite its sunny aspect and warmth in the summer months, the south Devon coast can be very cool in the colder months and a first class heating system was always going to be essential.

Stelrad’s Planar designer radiator is a stylish, understated, completely flat, smooth fronted, slim profile radiator model, that has won a legion of fans in the interior decorating and architectural sectors.  The range includes lengths up to three metres and heights up to 700mm – the largest radiator in the Planar range now delivers 16,726 Btu/hr (Dt50).

Planar is available in five heights – 300mm, 400mm, 500mm, 600mm and 700mm – and multiple length options from 400mm to 3,000mm. It’s available as a single K1 (Type 11) or a double K2 (Type 22) and is now available in an amazing 100 SKUs and 12 vertical options. The Planar vertical range has added significantly to the appeal of this excellent design, allowing it to provide more heat from a narrower radiator footprint, making it a favourite across the UK.

Jan Tribble from architect Kay Elliott says the Planar was the obvious choice for this stunning development: “We pride ourselves on detail and we looked long and hard for the right products to grace Abbey Sands and when we were looking for radiators we wanted something understated, with clean lines and the Planar met those requirements. As well as the aesthetics, we wanted a quality product that offered reliability and quality manufacture – and Stelrad products offer both.”

“We were delighted that the Planar was selected for this project,” says Stelrad’s Marketing Communications Manager, Sarah Baker. “It’s been very popular with architects and interior designers across the UK, looking to add a quality look and feel to a design through the use of a slim profile, flat fronted radiator that blends perfectly into the décor of upmarket apartments, homes and offices. We’re seeing Planar selected increasingly over the use of traditional steel panel radiators to lift new building design to a new level.”

Full details of the Stelrad range of designer radiators can be seen at www.stelrad.com, you can call for brochures and information on 0844 543 6200 or email marketing@stelrad.com . You can follow Stelrad on Twitter @Stelrad or on Facebook at www.facebook.com/StelradLimited.

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The Low Carbon Exchange is using the Klober Solar Cable Outlet Kit with all new build and retrofit PV installations for the Poole Housing Partnership, Plymouth Community Homes, Alliance Homes, Aster Properties and Radian Housing. 8 and 16 cable kits are available for up to 8 cables of 4mm to 8mm with a choice of 5 collar widths. It provides the ideal means of providing a neat, weathertight seal for cables from other services. The product is fully wind-tunnel tested, available in brown, terracotta and slate grey and suitable for pitches between 20°- 50°.

Low Carbon Exchange spokesperson Jennie Miller commented, “The Klober kit has provided the perfect means of weatherproofing PV installations and we have used it on all projects since the company was established in 2010.”

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An established care home in Swindon is a warmer and safer place thanks to the specification of Stelrad LST radiators as part of an overall refurbishment project. The Ridings Care Home provides 32 self-contained flats offering a mix of one and two bedroomed accommodation, for a mix of active elderly individuals and couples, some with 24 hour care needs.

The care home – one of many owned and managed by The Guinness Partnership – used to feature an ageing electric underfloor heating system with electric immersion heaters providing hot water. As well as being ‘past its sell by date’, it was expensive to run option and needed upgrading and replacing with modern energy efficient and reliable heating options. Hewer FM, based in Gloucester was selected to replace the heating for the care home and the old system was ripped out and replaced by a traditional wet heating system using three modern gas fired condensing boilers to provide the heating source, and two further gas boilers operating in conjunction with solar thermal and solar PV panels to preheat the cylinder and provide hot water.

Because of the differing levels of disability and care requirements in the home, LSTs – low surface temperature radiators – were selected. These comply with the strict requirements of the NHS Guidance Note for ‘Safe hot water and surface temperature’ and can be installed in domestic, commercial and public buildings running heating systems with total public safety assured. The surface temperature of these LSTs will never exceed 43°C. It’s for buildings such as these that Stelrad’s LST range has been designed, to ensure that elderly and vulnerable people cannot suffer the serious dry burns that are possible from falls against standard radiators where the surface temperatures can exceed 70 degrees Celsius.

In all, more than eighty Stelrad LSTi Plus K2 radiators were supplied for this project to heat the flats, the corridors and other public areas of the care home and The Guinness Partnership is very happy with its investment so far: “When you are providing a home for elderly tenants, warmth and safety are the two key features of the property and the Stelrad LSTi’s, as part of this new heating system, offer both perfectly,” says The Guinness Partnership’s Oliver Wilkinson. “As well as being effective and safe, they are aesthetically pleasing and blend in nicely in both the rooms and the wider care home – the covers for the radiators look good and have rounded edges to ensure there are no sharp edges to touch or fall against and have the added benefit of being finished in a long-lasting anti-bacterial coating which is perfect for an environment such as this. The smooth fronted casings are easy to keep clean and hygienic.”

HewerFM’s John Hendzel was the contract manager responsible for the Ridings project: “The LST i Plus from Stelrad is supplied with the addition of an integral remote sensing thermostatic valve to allow adjustment of room air temperature, making it even more energy efficient than other LST radiators, as well as offering an arthritic adaptor that makes it far easier for older people who may have grip problems to adjust the level of heat in their rooms. There are also additional components to discourage unauthorised tampering for the radiators situated in public areas of the building. Importantly the LST i Plus features curved casing edges which ensures no square edges to damage anyone falling against it. The design has been well thought through and provides an ideal solution for heating in a property such as this one.”

Each Stelrad LST emitter provides high outputs through convection for outstanding heat performance and is guaranteed to perform to a maximum working pressure of 116 psi (8 bar) and conform to BE EN 442 – the European standard for radiators.
Full details of the range of Stelrad LSTs can be found at its website at www.stelrad.com.

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Monitoring the performance of water and energy saving initiatives is essential to demonstrate the benefits, ensuring that systems operate to specification and are tuned for maximum savings to deliver fast pay-back on investments. And London based PA Energy who specialise in the supply, installation and ongoing monitoring of turnkey sub-metering systems have used Micronics ultrasonic, clamp-on flow and heat metering products to good effect on a wide range of water and or energy saving projects.

The projects have included rainwater harvesting, fuel cell and solar/thermal installations on commercial buildings in the London area and the simple clamp-on, non-invasive solutions from Micronics have offered significant advantages over the traditional alternative of in-line meters and their requirement for system drain-down, pipe cutting, re-filling systems and the associated costs, which are all avoided by the use of a clamp-on solution.

For the rainwater harvesting project a claim for a reduction in the sewage charge is being developed by using a Micronics U3000 to demonstrate how much rainwater is being dumped to sewage by metering the amount of water being pumped into a grey water tank in comparison to the boosted cooling water entering the tank. Another application was measuring the LTHW heat flow from a fuel cell calorifier again with a U3000 to demonstrate the performance of the fuel cell process. And yet another was monitoring the heat transfer/performance from a solar/thermal panel by measuring the water /glycol mix and differential flow and return temperature with a heat calculator to calculate heat transfer to the buffer vessel heat exchanger to demonstrate the performance of the solar/thermal system i.e. that it was performing to specification.

PA Energy selected clamp-on ultrasonic flow meters for the clear advantages of being low cost, non disruptive and simple to install in comparison to in-line meters and Micronics were selected as the supplier due to a combination of their long-term experience with non-invasive, clamp-on technology, product performance and pre-order assistance.

PA’s Managing Director – Percy Albuquerque says “The Micronics clamp-on flow meters have proved to be an effective component in providing accurate water flow and heat measurement data for our web based aM&T plus data analysis services. The product performance has been good, even on partially filled pipes and on the rare occasions that we have had application problems the Micronics support has been good.”

The potential for similar use is significant and PA’s experience is an example of how clamp-on, ultrasonic technology can be successfully implemented to gather information and demonstrate the performance of water and energy saving installations. For further information call +44(0)1628 810456, or visit www.micronicsflowmeters.com.

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In HVAC system terms, heat recovery is a process of capturing, and putting to good use, heat that would, in the normal course of events, be “rejected to atmosphere”. One example is heat energy that is absorbed and rejected by an air conditioning system during its cooling cycle. This, to all intents and purposes, is free heat that can be successfully redirected for space heating, domestic water heating or any other process that requires heat.

Heat recovery is being successfully applied in all types of buildings, schools, manufacturing plants and office buildings. It typically provides a very attractive return on investment for building owner/operators.

Hotels with their relatively high year-round internal cooling loads combined with high hot water demand are excellent opportunities for “green” heat pump, heat recovery chiller technology.

Importantly, heat pump heat recovery systems can allow for substantially downsizing or even eliminating fossil fuel, combustion based heating equipment such as gas boilers. This was the case in a project undertaken and described here by the Daikin Distributor, Space Airconditioning plc.

Space Air has enjoyed a partnering agreement with a leading UK hotel group for over 20 years and, for a refurbishment project in the heart of London, supplied a 320kW Daikin air-cooled chiller with a heat recovery option. In addition to satisfying specific, almost continuous cooling demands, this chiller also provides warmed water to 4 x 500 litre indirect DHW cylinders.

The hotel’s hot water supply is pre-heated by the chiller’s heat recovery process; this in turn dramatically reduces the output required of new high efficiency gas fired water boilers.

The result is significant kW savings in energy and huge reductions in mains gas consumption.

The Hotel Group had committed to refurbish the Covent Garden Hotel including all guest bedrooms as well as function rooms, reception areas and restaurants.

Space Air technicians in conjunction carried out a survey with the hotel’s maintenance company. It was determined that whilst the existing Air Handling Unit serving the common areas and restaurants etc. was in good condition and could be re used, an existing air cooled chiller needed replacing, due to the fact that it was designed to operate with R22 refrigerant (the use of which for service purposes will be banned from 2015) and was in a state of disrepair with only one working compressor circuit.

The concept that a new Daikin Chiller to replace the old machine, could also provide cost effective heat recovery features, created interest because the hotel’s existing gas boilers were due to be replaced.

Space Air presented the features and specification of the Daikin Heat Recovery system to the client. Space Air was able to illustrate cost savings the Heat Recovery option would provide, and combined with the reduced costs for the smaller gas boilers, substantial reductions in the hotel’s hot water services operational costs could be realised.

The Hotel group decided it made good financial sense to proceed with the Heat Recovery option.

The new Daikin heat recovery chiller operates 24/7 and an existing back up (cooling only) Daikin chiller is only used in case of unlikely
failure. This means the new chiller provides virtually continuous pre-heated water for the DHWS.

On a seasonal basis it has been calculated that the chiller will produce an average of 236.6kW of hot water, free of charge. This takes into account the chiller operating for 24 hours, 7 days a week, 365 day a year (8760 hours).

Four x 500 Litre indirect cylinders provide pre-heated water on a separate circuit to the secondary heat exchanger in the basement, which serves the main feed to the showers, and DHWS for the hotel guestrooms.

Allowing for losses in the cylinders and pipework etc., the system achieves delta T of approximately 20°C. So the mains water supply to the DHWS heat exchanger is increased by this temperature rise resulting in a much lower demand than usual on the new gas boilers.

To put this into perspective the cost to heat 2000L of water based on a ∆T of 20°C with a gas boiler was calculated and compared with the ‘extra’ cost of providing a heat recovery option on the chiller price to perform the same function.
Approx. 46.44kWh (per hour) of energy is required. Over one year based on 24/7, 365 days (8760 hours) operation and with gas at 4p per kWh, the cost of gas would be approx. £16k.

The premium cost for the optional HR circuit on the Daikin Chiller plus the required tanks, pumps, pipework etc. Installed = £30/40k (Estimated). This equates to a payback period on the investment of less than 3 years.

So far the client is delighted with the cost savings achieved and is looking to apply similar heat recovery principles in more of his property portfolio.

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