. Engineering practice and theory, for steam engineers ... . their unconventional general appearance ratherthan any real objection that can be mentioned. However, engineers always have a choice in suchmatters, and the author is no exception to the gen-eral rule, but does not hesitate to state his prefer-ence for the horizontal, cross compound many advantages are claimed for verticalengines, still it is a significant fact that they are AND THEORY, 79 still in the minority, and are liable to be for manyyears to come. In marine service the vertical style ofengine, both simple and
. Engineering practice and theory, for steam engineers ... . their unconventional general appearance ratherthan any real objection that can be mentioned. However, engineers always have a choice in suchmatters, and the author is no exception to the gen-eral rule, but does not hesitate to state his prefer-ence for the horizontal, cross compound many advantages are claimed for verticalengines, still it is a significant fact that they are AND THEORY, 79 still in the minority, and are liable to be for manyyears to come. In marine service the vertical style ofengine, both simple and compound, has an excellentrecord for economy of fuel, but this is due to favor-able conditions which are more frequently found atsea than on land, and to these conditions, ratherthan to the particular style of engine, must thecredit be given. If the load on a horizontal enginethat is properly proportioned for its load is constant,and the proper pressure and quality of steam isavailable, the results will show that it is very eco-nomical in the use of A MODERN HORIZONTAL HIGH SPEED TANDEMCOMPOUND ENGINE. 8o ENGINEERING PRACTICE CHAPTER 12. TRIPLE EXPANSION ENGINES. The power of a triple expansion engine is deter-mined by ascertaining the power developed in eachcylinder separately, the same as if it wrere a singleengine, and adding the results together, as men-tioned in a previous chapter, but when taking dia-grams from these engines care must be taken tosecure those that faithfully represent the powerdeveloped at the same time. It will net answer totake a diagram from one cylinder, and then takethem from the others at convenient seasons, foreven if one minute elapses between the two opera-tions there is no way of knowing whether the resultsare correct or not, taking the engine under normalconditions, for the load may have changed in themeantime, so that the diagrams will not correctlyrepresent the load on the entire engine. This may be accomplished by having an indicatoron
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