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What I Learned about Atmospheric Absorption Loss from my Whistle Tests

Jul 28, 2009 2:44 pm

re: re: re: What I Learned about Atmospheric Absorption Loss from my Whistle Tests

Richard Weisenberger

The problem is perceived rather than real. Whistles are not INHERENTLY inefficient. There has to be a paradigm shift in people's way of thinking.

Most people still equate whistles with inefficient, outdated technology. The Dynawhistle (patent 4686928) is the loudest and most efficient true whistle design ever.

A typical 4" diameter steam whistle uses around 150 boiler HP (150 PSI at 400 CFM) and produces about 110 dB at 100 feet and has a 70 dB radius of less than 1 mile. This is inefficient.

Private Reply to Richard Weisenberger (new win)

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