Engineering Physics Annotation << Back Estimations of a thermal condition of an element at various numbers of Fure (Fo < 0,02, Fo > 0,1) O.S. Shabunina Simple methods are stated in work of an estimation of a thermal condition of an element. They do not demand use of set of own numbers Shturma-Liuvillya’s regional problem, the solution of the transcendental equations. The approached and exact methods for an estimation of a temperature field in an element without application of special functions (Besselya, Gaus’s mistakes, etc.) are considered in article. Keywords: own numbers, heat exchange, unlimited plate, superfluous temperature, thermal diffusivity. E-mail: oshabunja@mail.ru. Р. 27-29.