Most people must be noticing that R410A split-system air conditioning is more efficient than previous systems. But the change is not just due to the refrigerant.
Effective commissioning of chilled-water systems is vital to their efficient operation — even more so when variable-speed pumps are used. SAV has responded to the challenge with commissioning sets that make possible the balancing of several fan-coil units from one point.
Keeping up in a competitive market place demands periodic reviews of product ranges. We found out how Carrier Holland Heating enhanced its AHU offering and addressed costs.
The traditionally separately supplied products of fan-coil units and diffusers are now offered as a single package with guaranteed performance.
Even products for very simple tasks can have far-ranging implications.Lawrence Burns considers float valves for controlling the water level in storage tanks and the benefits to health and safety and energy consumption.
Progressive companies base their success on a sustained programme of new-product development. Anne King examines the issues in the building-services sector.
The successful exploitation of modularisation requires the efforts of more than just a few imaginative contractors. Manufacturers have an important role to play, too.
Imperial College’s new landmark building for the Tanaka Business School, designed by a team including architect Foster and Partners and consulting engineers Buro Happold, is a striking example of how a new building can successfully integrate with existing structures and services to achieve a balance between user comfort and architectural aspirations.
A solar-controlled Sun-protection system at the Manchester offices of the Royal Bank of Scotland automatically control 320 venetian blinds that have been fitted to this glass-fronted structure.
Maximum use of primary energy and reduced carbon emissions are being achieved at DVLA in Swansea by a tri-generation energy system.
Learning from the experience of warmer countries as a response to changing conditions in the UK needs to be tempered with caution, as Dr Adrian Pitts told a recent CIBSE conference.
Exposing the thermal mass of an existing building to night-time cooling has reduced internal temperatures by 5 K compared with ambient temperatures — with important implications for responding to climate change. Nick Barnard and Ant Wilson explain.
Jacqui Harman summarises the most important effects of climate change for building services.
A complete range of controls for domestic hot water is offered by Watts Martin Orgee.
The second phase of the introduction by Grundfos of the TP range of inline centrifugal pumps extends the range of motors to 35 with ratings from 120 W to 630 kW. EFF1 high-efficiency motors are standard on all 3-phase models up to 90 kW. Flange sizes are from DN25 to DN 400 with operating temperatures from -25 to 150°C.
Fedders split and multi-split air conditioners are available for next-day delivery from JS Air Conditioners. The range comprises wall-mounted units from 2.6 to 6.5 kW with list prices from £396 to £837. Noise levels are 26 dB(A).
Daikin has introduced a heat-recovery series of its EUWA air-cooled water chillers. They have a single screw compressor using R407C and offer cooling capacities from 200 to 350 kW from four models. The range is likely to be increased soon to eight models with capacities from 100 to 550 kW.
Finned panels to mask radiators and pipework are now offered for use with Hager’s Tehalit cable-management systems. This fin system also reduces the need for on-site fabrication for awkward corners or pillars.
The cold-temperature performance of Chalmor’s Endurance lighting system is rated at -25°C, making it applicable for cold rooms. These fittings provide 150 W of white light that degrades by only 6%. Striking is instantaneous, and full light output is attained within a minute.
Oasis overdoor warm-air heaters from Diffusion are available in lengths of 1 and 1.5 m for LPHW or electricity.
A smoking booth that can accommodate three people and requires only connection to a mains socket has been developed by Carrier Holland Heating.
Chiller range is even quieter
In response to changes in Building Regulations and energy-efficiency standards, Airedale has developed a range of packaged water-cooled chillers with EERs of 3.5 and more under nominal conditions. The UWC range is designed to meet the requirements of the Energy Technology List.
An automatic-shutter version of its standard low-voltage 100 mm axial fan is now offered by Addvent. The AVX100 ALVN is described as a premium fan that minimises backdraught due to the superior seal achieved by its automatic shutters — improving the efficiency of the fan and comfort.
Vent-Axia’s range of Turboprop axial-flow fans for kitchen systems and longer duct runs is now available from all branches of CCL Veloduct.
Finning Power Systems offers ex stock a range of standby generators with outputs from 5.5 to 250 kVA and aimed at building-services engineers and electrical contractors. Generators with outputs up to 500 kVA are available to order. They are particularly aimed at retail applications, and a new company (EP Retail) has been set up to supply them.
To harmonise with the oak parquet in the main hall of the Mitchell Library in Glasgow, MITA has supplied customised floor boxes with brass edges.
Not only was only four weeks available for the design, installation and commissioning of an air-conditioning system for a community health centre in Huddersfield, but it also had to remain operational throughout.
The lower cost and ease of installation of Daikin’s VRV air-conditioning systems compared with chiller and 4-pipe fan-coil system promoted its installation in the Digital World Centre at Salford Quays in Manchester. Key Engineering handled the project on a design-and-build basis for Lowry Developments. Total cooling load for the project is 820 kW.
An 80% reduction of limescale on heating surfaces has been achieved following the testing of an installation of WaterMatic’s KalGuard+ electrolytic scale inhibitors at Cranfield.