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Work started in 2002 in advance of the launch of the 2003 Accord. [3] In 2004, Honda commenced work on a 234,000-square-foot extension of the plant for a new paint facility of US$123 m. The new facility uses high-efficiency ovens, air recycling systems, and more efficient variable drive motors that would save 34 percent energy. [ 4 ]
Exhaust resonators are also used to reduce potentially loud engine noise where the dimensions are calculated so that the waves reflected by the resonator help cancel out certain frequencies of sound in the exhaust. In some two-stroke engines, a Helmholtz resonator is used to remove the need for a reed valve.
As in the case of roadway noise, little progress has been made in quelling aircraft noise at the source, other than elimination of loud engine designs from the 1960s and earlier. Because of its velocity and volume, jet turbine engine exhaust noise defies reduction by any simple means.
Thermal barrier coating (colored white) on a turbine guide vane in a V2500 turbofan engine. Thermal barrier coatings (TBCs) are advanced materials systems usually applied to metallic surfaces on parts operating at elevated temperatures, such as gas turbine combustors and turbines, and in automotive exhaust heat management.
Care must be taken when writing an objective noise provision to make sure that the sound levels are physically realizable. For example, requiring the maximum sound level of an automobile to be 40 dB(A) or the maximum sound level in a residential zone to be 30 dB(A) opens the provision to an enforceability challenge.
Robins are a much loved Christmas icon, but wind turbines installed in their habitat are affecting their song, with worrying consequences. Robin hushed: wind turbines are making songbirds change ...
A roof turbine ventilator, colloquially known as a 'Whirly Bird' is an application of wind driven ventilation. Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems.
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