Summary

The principle of the conservation of energy forms the basis of energy balance computations. This chapter presented the different forms of energy of interest in chemical processes and the quantification of the principle of conservation of energy in terms of these forms of energy. The concept of enthalpy and its dependence on temperature was also discussed. The application of these principles was then demonstrated, with different problems dealing with quantification of enthalpy changes in transformations and determination of system temperatures. The nature of computational problems ranged from simple linear equations to more complex transcendental equations. The approach to solving these problems and the resulting solutions using various numerical and graphical techniques available from different software programs were also presented.