conduction with heat genration

In many situations of practical importance, heat is genrated internally at uniform rate within the conducting medium itself. Notable examples are: 1 resistance heating in electrical appliances ; essentially it is the conversion of electrical energy into thermal energy in the current carrying medium 2, energy genrated in the fuel element of a nuclear reactor 3. Liberation of energy due to some exothermic chemical reaction occuring within the medium 4, drying & setting of concrete The rate of heat genration has to be controlled one; otherwise the resulting temprature growth might result in the failure of the medium . Undoubtedly temprature distribution within , the medium & the rate of heat dissipation to the surroundings assume great importance in the design of thermal units.