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Автор: John A.Swaffield
Издательство: Taylor & Francis
Год издания: 2010
isbn: 0415492653
Количество страниц: 362
Язык: english
Формат: PDF
Размер: 9 Мб
Каталожный номер: 64899
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The air pressure regime and entrained transient airflows established within building drainage and vent systems result from the random discharge of appliances throughout the network, system surcharge or the arrival of pressure transients propagated by events external to the building system itself, and belong to a clearly defined family of unsteady flow phenomena variously described as pressure surge or transient propagation, a grouping that also, historically, includes waterhammer. The air pressure regime is a direct result of the superposition of pressure transients generated as a result of a multiplicity of changes in the system operating condition and wave reflections and transmissions, while the resulting entrained airflow depends fundamentally upon the shear force between the applied water flow and the air within, or drawn into, the network.
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