The Newcomen engine also produced a reciprocating or rocking motion because it was designed for pumping. These engines were large, heavy, and produced little power, which resulted in an unfavorable power-to-weight ratio.
As using steam became more reliable, steam power became applied to larger, ocean-going vessels.īackground Limitations of the Newcomen steam engine Įarly steamboat designs used Newcomen steam engines. The term steamboat is used to refer to smaller, insular, steam-powered boats working on lakes and rivers, particularly riverboats. or S/S (for 'Screw Steamer') or PS (for 'Paddle Steamer') however, these designations are most often used for steamships. Steamboats sometimes use the prefix designation SS, S.S. 1860-1865 Dutch river steam-tugboat Mascotte IIĪ steamboat is a boat that is propelled primarily by steam power, typically driving propellers or paddlewheels. Lookout, transport steamer on the Tennessee River, c. Without getting into an explanation of friction loss of your ten foot, one inch diameter pressure hose, you will require 33.5 psi at the pump to provide the 30 psi at the eductor.Smaller than a steamship boat in which the primary method of marine propulsion is steam power Refer to a conversion chart to find conversion of decimal inched to "regular" inches which is fractionally larger than 1/2".Īt 30 psi the 1/2' eductor will require 41 g.p.m. 264 IMPORTANT: this is the radius of the eductor size - NOT the bore size!
Now for the tricky part: convert backwards and finally come up with a bore diameter.Įductor size is. inchesĮxample: 2 inch jet Ģ inch jet = 3.14 x (1" (radius of jet) Squared)ģ.14 sq inches x 7% (.07) =.
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