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Split-system heat-pump installation addresses noise issues
Published: February 2007
Unusually quiet air conditioning using split-system water-source heat pumps is achieved in the new building of the Irish Times in Dublin using McQuay UK’s WSHP system. The compressor/ condensing section is split from the fan-coil unit, eliminating noise problems from the compressor. The contract is worth over £200 000 and involves Marren Engineering of Dublin installing 120 WSHP units in the 8-storey building near the Liffey River and designed by Will Revert. The eight floors, including a roof-top restaurant and boardroom, have an average of 16 units per floor. They are mainly concealed in ceilings and have heating capacities from 3 to 11.9 kW. A common water loop installed by the developer connects all the compressor sections together to enable each WSHP to share recovered heating or cooling. A boiler and dry cooler provide additional heating and cooling when required. The system is monitored and managed through a McQuay Smart central controller, which enables the publisher to view the status, set operating modes and parameter valued for each unit or group of units. Related articles: 
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