Experiments on Liquid-Vapour Phase Change between Plane Liquid Surfaces. Part 1. Experiments with Water, Freon and Mercury

摘要

An experimental setup was designed and constructued to measure temperature distributions in the vapor between an evaporating liquid surface and a cooler condensing surface. The vapor was contained in transparent chambers of a diameter of 105 mm with metal end-plates to heat and cool the liquid surfaces. Temperature distributions were measured using Chromel-Alumel thermocouples. This report described the theoretical background for the experiments, the equipment used and the preliminary results obtained with water, Freon 113 and mercury. The results obtained generally qualitatively conform with the theoretical predictions for vapors contaminated with inert gas. The results suggest that much higher levels of purity will have to be achieved if the anomalous temperature distribution is to be observed, assuming that it exists in nature.