Mechanics of Heating and Ventilating With Charts for Calculation and Examples Classic Reprint

Excerpt from Mechanics of Heating and Ventilating: With Charts for Calculation and Examples

The theories of heating and ventilating may be brought under three general headings:

1. The movement of fluids.
2. The transmission of heat or thermal functions.
3. The requirements of hygiene.

The first named would treat of the flow of the different heat carriers, and of air for ventilating, with special reference to the conditions met in modern practice. It would represent the mechanical side, while the heat transmission in its various steps, through building structure, as well as in generating or absorbing, radiating, and emitting heat, are more purely physical functions. In a work on the whole subject of heating and ventilating these two chapters could not be strictly separated, and the third one, the sanitary side, should also be considered in relation to the others. However, the present treatise is not intended to go beyond the first of these three equally important phases. Nor is it claimed to be an original contribution. It is presented as a collection of data from various sources, sifted, compared and selected with the idea of meeting certain needs of the day, and put into shape for ready application. At the same time, it has been attempted to give a comprehensive and explanatory outline of the subject, which may contribute toward friendlier relations between theory and practice, for the benefit of those who care, and make the data presented more useful to the student and engineer, and through them to the public.

The author is indebted to Mr. Fritz Schübeler, with Sulzer Bros., a pupil and former assistant to Dr. A. Stodola for a friendly discussion of some theoretical points, and to his office assistant Mr. Alfred J. Offner for the patient and faithful execution of the charts.

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