On the effects of heat recoveries discharged into steam power plants

It is noted that energy saving operations realized at steam power stations connected with industrial plants as well as steam plant repowering involve the discharge of heat recoveries and their interaction with preexisting plant components. The authors present some criteria for the analysis of steam plant performance characteristics and the respective results on the effects produced by these heat recoveries. A parametric analysis was carried out, taking into account the main schemes of steam power systems and layout, size, and design performance. In particular, the influence of the following parameters was analyzed: preexisting layout and size of plant; quantity, quality (i.e., temperature), and location of heat recoveries discharged into the plant; and plant working conditions (nominal and partial load).