The Variation of the Specific Heats (Cp) of Oxygen, Nitrogen and Hydrogen with Pressure
Abstract
The specific heats, Cp of oxygen at 26° and 60°C, nitrogen at 26° and 60°C and hydrogen at 50°C have been measured as a function of pressure over the pressure range 10 to 130 kg/cm2. A continuous flow method is used, by which the ratio of Cp at a pressure p to (Cp)0 of the same gas at a pressure of one atmosphere is measured. The theory of the method shows that the experimental results are practically independent of the usual errors arising from heat leakage and the Joule-Thomson effect. Complete experimental curves as well as tabulated values are shown for Cp(Cp)0 as a function of pressure. Details of construction and use of the apparatus are given.
- Publication:
-
Physical Review
- Pub Date:
- May 1931
- DOI:
- 10.1103/PhysRev.37.1345
- Bibcode:
- 1931PhRv...37.1345W