Hutton, Frederick Remsen, 1853- [from old catalog] · New York, J. Wiley & sons; [etc., etc.] · leaf 505
e bottom 468 MECHANICAL ENGINEERING OF POWER PLANTS. of the outer tube where its presence would result in a burningof the tube. The circulation is active while the boiler issteaming, but it is not so when no steam is being withdrawn,and the circulation is that due to convection only. Underthese… … Fig. 397. Belonging also to the closed-tube class is a type with hori-zontal units projecting radially from a central vertical shell.The difficulties here are the cleansing of the inside of theunits, and the indeterminate character of the circulation. Ithas been called the **porcupine boiler. 248…
Mechanical engineering · Steam power plants
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