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In recent years, the use of insulation polymers in various fields has expanded. Therefore, Considering the importance and application of these polymers in various industries, their behavioral characteristics, including thermal properties evaluating their performance and the optimized and efficient use of them is necessary. The study also estimates that radiant and conductive properties of zirconia ceramic foam as an insulating polymer using inverse heat transfer method are discussed. Heat transfer method used in this paper is conjugate gradient method. The control volume numerical methods for solving the energy and radiation are used. The problem of inverse heat transfer is solved for estimation of radiation-conduction parameters by considering two modes, single sensors and two sensors and taking into account different initial guesses. For solving the inverse problem, the data used for direct solving are used and by entering some error, these data are used in the inverse solution. The results show that conjugate gradient algorithm for calculating the properties of radiative and conductive thermal insulation polymer gives acceptable results and also with the increasing number of sensors, parameters are estimated accurately using the conjugate gradient algorithm increases.

Keywords: Polymer insulations, Radiation, Inverse analysis, Conjugate gradient

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