Highly integrated energy conversion systems need a Heat Recovery Steam Cycle that recovers heat produced by exothermic reactions (combustion, gasification, fuel synthesis) in order to generate electric power and supply heat and steam to endothermic processes and external users. Since the recoverable thermal power can be a significant fraction of the fuel power input, the design of the HRSC has a large effect on the overall plant efficiency. However, there appears to be no published study on the optimal design of HRSCs integrated with several heat sources, heat users and bleeds. In this work...