2013 March

DHW, water services, Baxi Commercial Division, Low carbon, LZC

Efficient and safe DHW

08 March, 2013

The wider use of low-carbon heat sources to produce domestic hot water necessitates a considered approach to risk control. Jeff House of Baxi Commercial Division explains.

DHW, water services, Deva, Methven UK, water efficiency

The need to use less water is becoming increasingly recognised and accepted. The industry is ahead of the public is raising awareness, as Barbara Osborne of Deva and Methven UK explains.

DHW, water services, Micronics, flow meter, flow measurement

When managers at an acute district general hospital in Bedfordshire wanted to understand the consumption of hot water to enable requirements to be identified for replacing equipment with the most energy-efficient solution, ETA Energy Systems was called in. Peter Richardson, managing director of ETA, explains, ‘During our assessment of the hospital’s needs, we established full weekly hot-water consumption profiles, allowing equipment to be accurately selected and specified for the replacement project.

DHW, water services. Grundfos, macerator

Grundfos has further enhanced its Sololift2 range of macerators. The family comprises just five models that, through the flexibility of their design, their adaptability and performance, provide the solution to handling wastewater for any combination of WC, bidet, sink, shower and washing machine.

DHW, water services, Heatrae Sadia, heat recovery, energy recovery

Well over half the energy that goes down the drain as hot water from showers can be recovered to preheat cold water using simple maintenance-free technology. Jon Cockburn takes up the story.

DHW, water services, Rinnai, hard water, scale

According to Rinnai’s Scott Humphries, its continuous-flow hot-water systems are easy to keep free of scale. He says, ‘When quoting for big installations, for example, multiple showers and numerous wash hand basins — continuous-flow systems save 30 to 35% on install and around the same on gas costs. And there is no costly messing around with salt-based conditioners.’

DHW, water services, Lochinvar, solar thermal

Lochinvar has supplied a solar-thermal system to meet the high demand for hot water in the new city-centre Redmond Building of Liverpool John Moores University. Consisting of a range of social and learning spaces, the 11 500 m2 building has toilet and changing facilities on each of its six floors, with a hot-water requirement throughout the day.

DHW, water services, Lochinvar, Part L

David Pepper welcomes the flexibility and practicality of the proposed changes to Part L of the Building Regulations, but questions their significance for producing domestic hot water.

Grundfos, Grundfos Pumps

Grundfos has embraced augmented reality (AR) to help explain the installation and features of its UPS2 pump head. Designed not only to meet the energy requirements of EuP 2013 legislation but also exceeding legislation due in 2015, this compact pump head offers a fast and energy-efficiency solution to upgrading or replacing pumps in restricted spaced such as in boilers or preplumbed cylinders.

Toshiba Air Conditioning, R22

Toshiba Air Conditioning has launched a leasing scheme for replacing obsolete R22 air-conditioning equipment with new systems — in most cases for no additional cost. R22 is still one of the most common refrigerants in use in installed systems, but the use of R22 for topping up plant will be banned from the end of 2014.

McBains Cooper, EPC, refurbishment

In five years’ time it will be illegal to let any commercial building with an Energy Performance Certificate of F or lower. Anthony Coumidis of McBains Cooper, considers the challenge the owners of these existing buildings face to avoid assets being rendered obsolete.

Biddle, fan convector, replacement

Biddle has launched a sectional version of its Forceflow fan convector to make the replacement of ‘back-access’ fan convectors simple and straightforward, as its configuration can be altered to match the existing builder’s work footprint. Fan convectors have become a popular choice for heating school classrooms, favoured for their ability to warm up rooms very quickly and that they require only minimal wall space.

Evinox, communal heating, space heating, heat interface unit

The new communal heating system for two high-rise blocks in Wolverhampton is served by Evinox packaged boiler skids that are more efficient than individual boilers. The £12 million investment to refurbish the buildings on the Hickman estate is part of the Wolverhampton Homes Decent Homes programme. Each flat has a ModuSat heat-interface unit equipped to provide accurate metering of energy consumption and billing.

Mitsubishi Electric Air Conditioning, R22

Year-long monitoring of the performance of upgraded air-conditioning units at the UK headquarters of Alfa Laval has shown a 44% reduction in overall energy use, amounting to around £4200 a year. The work involved replacing aging R22 units with five new City Multi YHM-R2 Replace technology systems from Mitsubishi Electric.

Xpelair, ventilation, heat recovery, energy recovery

As part of ongoing refurbishment Xpelair’s Customvent division has provided a bespoke high-efficiency ventilation system for Halliford School in Shepperton. The system needed to meet and exceed stringent acoustic regulations that were imposed during planning stages because of the proximity of the school to local housing.

Sabien, boiler, space heating, dry cycling

Energy savings of 22% over and above those already being achieved by the building-management system have been realised by the Driving Standards Agency by fitting Sabien Technology’s M2G intelligent boiler load optimisers to boilers at Eastgate House in Newcastle upon Tyne. The payback is projected to be abound 1.4 years.

DHW,Durapipe,Legionella,Legionnaires' Disease

Maintaining healthy pipes

08 March, 2013

Legionnaires’ Disease is an ever-present risk in many pipework systems. Des Dolan of Durapipe discusses how to help prevent legionella bacteria establishing themselves in building-services systems

ADT Fire & Security, fire detection

St Mary’s School, an independent girls’ school in Dorset, has upgraded all its fire-detection measures with design help and guidance from ADT Fire & Security. The upgrade protects the site with a reliable and robust digital system. The school occupies a varied 55 acre estate centred around a larger 4-storey Victorian country house, now enhanced by a modern complex of bespoke buildings.

BSRIA, maintenance, KPI, Key Performance Indicators

BSRIA’s latest Key Performance Indicators for M&E maintenance show a number of encouraging improvements — as Tracey Tilbry explains.

Daikin, VRV, VRF, air conditioning, heat recovery

Balancing the requirements for cooling, heating and hot water in a building has never been easier. And simulation software makes it easy to evaluate the best option. Michael Passingham of Daikin UK takes up the story.

Purmo, renewable energy, heat pump, space heating

Purmo is presenting its range of radiators as offering a potential energy saving of 15% in low-temperature heating systems compared with other types of heat emitter, particularly in applications using renewable-heat sources. Chris Atkins, sales and marketing director, explains, ‘The secret is largely in their ability to react rapidly to changes in temperature as and when they are required.

Hamworthy, boiler, cast iron, space heating, hot water

The refurbishment of boiler plant in one of 24 plant rooms at a boarding school in Dorset has seen three Hamworthy Purewell VariHeat pre-mix condensing boilers replace four Purewell Classic atmospheric boilers. Provision has been made for the installation of a fourth boiler in the summer when that area of Canford School is likely to be extended.

B&ES, maintenance, SFG20, SFG 20, Andy Green

Not only does the new SFG20 enable maintenance strategies to be defined for every type of building and every need, but it also delivers the capability of managing the total cost of ownership. Andy Green of the SFG20 technical standards committee takes up the story.

NG Bailey, Cal Bailey, carbon emissions reduction

Setting an example

08 March, 2013

In urging more FTSE 100 companies to report on their estate-specific carbon reduction, Cal Bailey of NG Bailey is only suggesting what his own company is already doing — and successfully exploiting that first-hand experience.

EPC, Mike Malina, refurbishment, Great Northern Hotel

The refurbishment of the listed Great Northern Hotel at King’s Cross achieved an Energy Performance Certificated only just below a B rating. Mike Malina of Energy Solutions Associates, which carried out the assessment, describes how a BREEAM ‘Very good’ certification was achieved for this 150-year-old hotel.

National Solar Centre, BRE, Solar OV, photovoltaic

Despite turbulent times for the solar PV sector just over a year ago, this form of renewable energy has become firmly established and is set to become part of the mainstream of the UK energy mix — with that growth supported by the setting up by BRE of the National Solar Centre. Ken Sharpe has been looking into the background.

Grundfos Pumps

With 2013 bringing increasing pressure to deliver cost benefits, including energy reduction, Grundfos reminds us that most pumps are incorrectly sized for their current application. To address the problem, Grundfos offers a wide range of high-efficiency pumps and advanced motor technology that can reduce the average pump’s energy consumption by up to 60%.

Big Foot Systems, VRV, VRF, air conditioning

Big Foot Systems offers competitive, no-risk rooftop support systems for building services and plant equipment.

Phase Change Material Products

TES is the temporary storage of thermal energy for later use, bridging the gap between energy availability and energy use. Using conventional solar collectors one can provide not only hot water but also as a low grade under floor heating utilising +27ºC (81ºF) Phase Change Material (PCM) containers can be provided, eliminating the need for any other heating source.

KNX, sensor, air quality, Siemens Building Technologies

Siemens Building Technologies has added KNX-compliant flush-mount models to its Symaro sensor line. In addition to measuring the temperature, humidity and air quality, these communications-enabled sensors can also control these parameters, as well as switch lights on and off and control sun protection systems. The devices support a wide variety of configuration options and can be customized to each specific application.

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In August, MBStv talks to Stephen Lisk, president of CIBSE about the need to adapt to changes and how collaboration leads to better working. many more...

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Alastair Martin: The energy market right now

Chief Strategy Officer at Flexitricity expresses the current state of the energy market and the need for flexibility.