Get up to date with market trends and technical developments in the

air-conditioning market.

pie charts
Both by value and by volume, minisplit air conditioners dominate the UK market — but the low-cost fan-coil unit remains prominent. These are BSRIA’s estimated figures for 2003.

In search of efficient air conditioning

Technical competition is joining price as one of the driving forces in the UK air-conditioning market. Ignacio de Alvaro has the details.

Energy savings on the central chiller plant at the BT Madley Earth Station are being boosted by variable-speed drives on condenser fans and the use of Excalibur’s Liquid Pressure Amplification.

An efficiency boost for chillers

With air-conditioning being such an energy-demanding service, achieving and maintaining an efficient system is vital. Gareth Holden gives some pointers to making an immediate impact on the efficiency of chiller plant.

Despite concerns that the high system pressures associated with R410A might pose installation problems, Phil Curtis of HVAC contractor MacWhirter found it surprisingly straightforward when a Carrier system was used to refurbish the Butten Building at Sunbridge Park Management Centre. He says that connections took only seconds longer than for lower-pressure refrigerants.

Practising containment

With the threat of a ban on the use of HFCs for stationary air-conditioning equipment having been lifted, responsibility is placed on the industry to prevent leaks, says Andrew Keogh.

Not only are evaporative methods of heat rejection from air-conditioning systems smaller and quieter than air-cooled condensers, but they also offer much lower life-cycle costs.

The life-cycle benefits of evaporative cooling

For the appropriate air-conditioning installations, evaporative cooling offers much lower life-cycle costs than dry cooling — as well as a host of other benefits. Robert MacLeod-Smith explains.

A wide range of indoor units can be teamed up in VRF air-conditioning systems — such as the floor and wall units shown here.

The flexibility and energy efficiency of VRF air conditioning

VRF air-conditioning systems owe their growing popularity to their ability to meet a wide range of requirements, as Tony Nielsen explains.

Bringing R410A down to small air-conditioning equipment is Daikin’s RZQ inverter series.

Daikin brings inverter control to small R410A systems

With the launch of its R410A RZQ inverter series, Daikin claims to the the first manufacturer to offer a full range of R410A inverters — from the smallest split to the largest VRV systems.

Advice and guidance on selecting and installing the right air-conditioning solution is available through the newly established Trox Design Bureau.

Trox sets up design bureau to share its air-conditioning expertise

Trox’s engineering and technical expertise in air conditioning is being made available to construction professionals by the setting up of the Trox Design Bureau.

VRF air-conditioning is gas powered

Gas-powered air conditioning with all the features of a VRF system is offered by Sanyo in its GHP range. Instead of an electrically driven compressor, a GHP unit has an open-drive compressor driven by a gas-powered engine. Either natural gas or LPG can be used.

Cooling using active chilled beams in a near-conventional ceiling layout is provided in Edinburgh University’s James Clerk Maxwell Building using Dadanco high-output ACB cassette-type active chilled beams.

Chilled beams suddenly got smaller

Dadanco chilled beams with around three times the output of traditional active beams installed in the James Clerk Maxwell Building of Edinburgh University have enabled a much more conventional ceiling layout to be used — looking very similar to that associated with a fan-coil systems.

A 10 K reduction in peak summer temperatures in this bedding factory in Dublin has been achieved following the installation of a Breezair evaporative cooling system.

Evaporative cooling pulls down temperature in bedding factory

Peak summer temperatures in excess of 35°C in a bedding factory and warehouse have been reduced to around 25°C following the installation of Breezair evaporative-cooling equipment.

Multi V
LE has entered the VRF market with the launch of the Multi V system capable of serving one indoor unit from 16 indoor units.

LG moves into VRF market

LG has introduced a range of VRF air-conditioning products that can operate up to 16 indoor units from one outdoor unit. Multi V is initially available in two sizes — 4.5 and 10 hp and can be operated via the Internet, a PC, a deluxe or simple controller.

Heating in winter, air conditioning in summer and dehumidification to cope with the hot tub in this conservatory next to a house in London is provided by a Toshiba heat-pump air conditioner.

Mini-gym demands give air conditioner a thorough work-out

Air conditioning — including dehumidification, heating and cooling — has been provided for a domestic conservatory in west London housing a range of exercise equipment. The free-standing conservatory is close to the house and thus requires heating in winter and cooling in summer to offset the considerable heat gain through its glazed roof.

Meeting the requirements for low noise and low height for a hotel upgrade in central London is an Aermec NRA 650 air-cooled chiller.

London hotel benefits from quiet air conditioning

Quietness in operation was the key criterion in the selection of air-conditioning plant for the upgrade of a 90-bedroom hotel on a sensitive site on the south side of the River Thames in London and very close to the Tate Modern.

Mitsubishi Electric has brought inverter-controlled heat-pump technology to smaller air-conditioning systems with additions to its R410A M-Series.

Mitsubishi boosts the efficiency of small systems

Mitsubishi Electric has radically revamped its range of small air-conditioning systems with the launch of a new R410A M-Series range of inverter-driven heat pumps.

Installed by Longcross Refrigeration, Daikin’s VRV2 air-conditioning system serves the Manchester control centre of train operator FirstGroup.

VRV2 signals energy efficiency in train control centre

Longcross Refrigeration has installed a Daikin VRV2 heat-recovery air-conditioning system in the control centre of train operator FirstGroup in Manchester, which runs the TransPennine Express trains.

The CyberAir precision air-conditioning range from Stulz uses the most energy-efficient ventilation technology as standard.

Stulz launches new precision air-conditioning range

Stulz’s CyberAir precision air-conditioning range incorporates new ventilation technology, new micro-processor and a completely new structure. Electronically commutated fans are used in all models.



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