Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Chris Bibby"'
Publikováno v:
International Journal of Ventilation. 17:31-47
Natural ventilation involves low pressures, necessitating large interior ventilation openings (ventilators) with low airflow resistance in interior partitions, allowing required ventilation airflow. These ventilators are detrimental to the noise isol
Autor:
Chris Bibby, Murray Hodgson
Publikováno v:
The Journal of the Acoustical Society of America. 141:277-288
The work reported here, part of a study on the performance and optimal design of interior natural-ventilation openings and silencers ("ventilators"), discusses the prediction of the acoustical performance of such ventilators, and the factors that aff
Autor:
Murray Hodgson, Chris Bibby
Publikováno v:
Applied Acoustics. 82:15-22
This paper discusses laboratory measurements of the acoustical and airflow performance of interior natural-ventilation openings and silencers (‘ventilators’). The objective was to create and characterize a purpose-built test facility, and use it
Autor:
Chris Bibby, Murray Hodgson
Publikováno v:
International Journal of Ventilation. 12:211-222
There is a need for a greater understanding of the acoustical and airflow performance of interior openings, and of silencers implemented to improve their acoustical performance, in naturally ventilated buildings. This paper discusses preliminary, fun
Autor:
Chris Bibby, Murray Hodgson
Publikováno v:
Building and Environment. 67:265-273
This paper discusses measurements of the acoustical and airflow performance of interior natural-ventilation openings and silencers (‘ventilators’) in existing buildings. It reviews the characterization of ventilator performance, and methods and t
Autor:
Chris Bibby, Murray Hodgson
Publikováno v:
Applied Acoustics. 74:585-590
Ventilation openings in partitions separating rooms reduce sound isolation and cause dissatis-faction with speech privacy. To better understand how ventilation openings affect the speech privacy relative to other factors and whether acoustical treatm
Autor:
Chris Bibby, Murray Hodgson
Publikováno v:
Applied Acoustics. 72:889-898
A turntable apparatus and measurement procedure, based on ISO 17497-1, were developed for measuring the random-incidence absorption and scattering of surfaces, without specialized facilities. While not highly accurate, they proved adequate for determ
Publikováno v:
ASME 2012 6th International Conference on Energy Sustainability, Parts A and B.
A Photovoltaic/PV cell converts solar radiation to electrical power. In order to have practical power output from these cells they are framed into modules. A typical module provides about 160–200 Wp. The electrical efficiency of the module decrease
Autor:
Murray Hodgson, Chris Bibby
Publikováno v:
The Journal of the Acoustical Society of America. 129:2393-2393
Naturally ventilated buildings are being constructed around the world due to advantages they offer in reduced HVAC operating costs, increased indoor air quality, and government subsidies for “green” construction and certification. Unfortunately,
Autor:
Chris Bibby, Murray Hodgson
Publikováno v:
The Journal of the Acoustical Society of America. 125:2614-2614
An apparatus and procedure were developed for measuring the diffuse‐reflection coefficients of surfaces in an anechoic chamber according to the ISO‐17497 method. This involves determining the proportion of incoherent energy in the impulse respons