A laboratory investigation of temperature rise as a function of atmospheric conditions

This paper is a report on a laboratory investigation of temperature rise as a function of pressure, temperature and humidity of the air. Physical laws regarding the dissipation of heat in air are important in temperature rise correction as well as in electrical design. Such laws are not yet very well established, and the purpose of the investigation was to determine these. Because of unforeseen difficulties, the results of the tests fell somewhat short of a scientific standard of accuracy. The results, however, are thought to be worthy of attention as approximating very closely the desired laws. The authors have endeavored, therefore, to present somewhat in detail a description of the apparatus and its manipulation, and to discuss the results, especially as regards their bearing on temperature rise correction. This paper is considered as preliminary to a more thorough and careful investigation now being made.