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• BACnet controller for terminal units  

  The DXR range of BACnet controllers from Siemens Building Technologies offers robust control for various widely used terminal units. The controls are easy to install, saving money at the outset. They can support the efficient use of energy by occupants with the help of the Green Leaf programme. If there is a green leaf on the display, the system is operating efficiently. If the leaf turns red, simply pushing a button restores the system to its most energy-efficient setting. Calculations based on BS EN 15232 show that Green Leaf can save up to 25% of energy use.

• Cool-Therm delivers ultra-quiet chillers 

  Cool-Therm has supplied an ultra-quiet 1.8 MW air-conditioning solution for a development of luxury apartments in Westminster. To meet a challenging limit of 51 dB(A) at 10 m specified by consultant AECOM, three additional sound-attenuation measures were applied to the conventional Turbomiser design to achieve the 12 dB(A) noise reduction required.

• Mitsubishi launches R32 products — with style 

  Mitsubishi Electric has launched a range of wall-mounted air-conditioning units using R32 , a refrigerant with a low global-warming potential (GWP). The M Series MSZ-LN range is the first in the company’s line-up to use R32. Mitsubishi will be launching further R32 air-conditioning solutions during the year.

• UK energy use of air conditioning reaches alarming levels 

  With cooling by air conditioning in offices in London generally well above typical expected consumption let alone best practice, Dr Andy Lewry of BRE examines the reasons and potential for action.

• Toshiba launches 3-pipe VRF system 

  The launch of Toshiba’s latest 3-pipe heat-recovery VRF air-conditioning system, SHRM-e, builds on the success of the SMMS-e VRF system, which had an ESEER (European Seasonal Energy Efficiency Rating) of over seven for all capacities. Developments in key technologies in the latest system include the compressor and intelligent control system — supported by incremental improvements in almost all system components. R410A is the refrigerant.