Crimped connections heat transfer coefficient law determination using experimental and numerical results

In this paper the global heat transfer coefficient law corresponding to two types of superposed crimped connections has been obtained, using experimental and numerical determination. The samples use copper wire crimped by two methods: the first method uses one crimp indents and the second is a proposed method with two crimp indents. The ferrule is a parallel one. For obtaining the experimental results the samples are heated in A.C. current at different current values until steady state heating regime. Then, the 2D model of crimped connections has been created to obtain the numerical results. Using experimental and numerical results, a law for global heat transfer coefficient corresponding to the two types of crimped connections was proposed. The temperature dependence of global heat transfer coefficient has been taking into account.