this paper presents a mathematical model that could assist in measuring, monitoring and controlling tem-perature variation in cold and ‘red-hot’ metal working conditions of machining. a numerical analysis tech-nique of the temperature distribution, based on the theory of complex applied potential, was carried out using the principles of relationship analysis between the paths of heat supply in ...

A proton exchange membrane fuel cell (PEMFC), as an efficient energy conversion device, has many advantages, such high efficiency and environmentally friendly zero emissions, is expected to have great potential for addressing the uneven distribution of global green energy. As a core component, performance (PEM) directly affects overall output system. At present, Nafion membranes with good, comp...