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PLATE-TUBE
COOLERS.-Shell-and-tube coolers and strut-tube coolers are used for cooling
both oil and water, usually with seawater as a coolant; plate-tube coolers,
however, are used only for cooling oil. Sea-water or fresh water may be used as
the cooling liquid in plate-tube coolers, depending on the installation. An exploded view of one model of a Harrison plate-tube cooler is shown in figure 7-9. A plate-tube cooler consists of a stack of flat, oblong, plate-type tubes that are connected in parallel with the oil supply and enclosed in a cast metal housing. Each tube of a plate-tube cooler consists
Figure 7-8.-Components of a strut-tube cooler. of two sections, or stampings, of copper-nickel. A distributor strip is enclosed in each tube. Several tubes are assembled to form the cooling element, or core, of the cooler. In a plate-tube cooler, the cooling liquid flows through the casing and over the tubes. The heated oil flows through the tubes. The tubes in the core assembly are spaced so that the cooling water circulates freely over their external surfaces. |
 
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