A Simple Method to Evaluate the Vapor Pressure of Transformer Oil at Various Temperatures

Abstract

Transformer oil as an important mineral oil is widely used in power equipments and its fundamental properties can be obviously presented by the vapor pressure which is difficult to be accurately evaluated due to its complex compounds. According to the testing mechanism of thermal balance, a simple method is proposed to evaluate the vapor pressure of transformer oil at various temperatures. The thermal stability and chemical components of the tested oil are characterized and discussed. The experiment data correlation to the vapor pressure of transformer oil is further performed by the typical Clausius-Clapeyron equation. It reveals that the vapor pressure of transformer oil is positively related to temperature environment. Moreover, a deep comparison between the experiment data and the correlated result confirms that the applied evaluating method is a suitable way to evaluate the vapor pressure of transformer oil and other liquid compounds system.

A Comprehensive Numerical Study of a Wedge-Shaped Textured Convergent Oil Film Gap

“…The boundary condition of zero gradient is applied to all the other surfaces that are not mentioned. Table 2 shows the oil and cavitation parameters used for the simulation model, as presented in [33,34]. The geometry was discretized using second order 3D tetrahedron-shaped elements.…”