Hartmann, Francis M., 1870- · New York, McGraw-Hill · leaf 173
the engine was exhausting to a surface con-denser; a partial vacuum being maintained by a pump. AB is the admission line, BC is the expansion line, C beingthe point where the exhaust-valve begins to open, and D the H p I * Af V- B \^_ E AD F G Fig. 26. point where it is fully open; DE is the… … Fig. 27. valve opened at the point a. The various points being illy de-fined is due to the time element involved in the opening and closingof the valves. The. line OH is the line of zero volume, and isfound by taking a distance, to the proper scale, to the left ofFA, representing the equivalent…
Heat · Thermodynamics
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