Mineral oil has long been used as an adequate coolant and dielectric medium in power transformer design. However, it is flammable and environmentally risky as it may be leaked or spilled. Therefore, ester fluids, which have been increasingly used in the last two decades, look promising as an ...
As seen from the Pareto chart (Figure 16a), the interaction is negative, which could be explained by ease of MIBC evaporation, reflected by low flash point (41 °C) [54]. In the industry, MIBC has been reported to evaporate directly from flotation cells [55]. Thus, an increase in ...