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Details of Grant 

EPSRC Reference: GR/L25172/01
Title: CIRCULATION PUMPS AS STRUCTURE-BOURNE NOISE SOURCES
Principal Investigator: Gibbs, Professor BM
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Hansatech Group
Department: Architecture
Organisation: University of Liverpool
Scheme: Standard Research (Pre-FEC)
Starts: 06 January 1997 Ends: 05 January 2000 Value (£): 151,455
EPSRC Research Topic Classifications:
Building Ops & Management
EPSRC Industrial Sector Classifications:
Construction
Related Grants:
Panel History:  
Summary on Grant Application Form
Excessive noise in water distribution systems often results from the circulation pumps. The problems result from fluid borne sound transmission through the connected pipe and radiator systems and structure borne sound transmission into the supporting walls and floors, and are so determined in part by the installation as well as the pump. There is a substantial body of research on fluid borne noise, but little on structure borne noise. As a result, there are no standard methods available for rating pumps as structure borne noise sources. The challenge is to identify the important noise and vibration generating mechanisms in installation as a prelude to the development of methods of test. The aims are to develop test methods which will allow comparison of pumps, comparison with set limits, prediction of noise in likely installed conditions, and design of quieter pumps. The scientific interest lies in the analysis of the important emission processes which contribute to the radiated and percieved moise. The technical interest lies in developing methods of test which simulate installed conditions and correlate with annoyance. A method of characterising installed pumps as sources of noise will allow manufacturers to include acoustic performance in their product literature and will increase competition in producing quieter installations, The social benefit of quiet central heating systems is clear.
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Organisation Website: http://www.liv.ac.uk