Design of heat storage networks for repeatable batch processes

Heat integration of repeatable batches with heat storage is a complex problem. This article suggests a new approach in the determination of possible heat storage for repeatable batch processes. This approach is based on the TRANSSHIPMENT method. The surplus heat and cold from streams and stream segments are added to the already designed heat exchanger networks for each time slice. These streams or stream segments from other time slices are supposed to match with streams or stream segments in a particular time slice. The heat content together with the changed supply and target temperatures of streams, and the minimal temperature difference for heat exchange are the main parameters used in the suggested method. The proposed technique creates a heat exchanger network between streams and potential heat storage at different times. The solution is a secondary network of heat storage units. The benefit in design of the solution is heat recovery for 11.51kW per cycle of the analyzed case study. The annual heat recovery by cooling and heating separately is 4488.1 kW. As a result of suggested solution, the waste heat is minimized for approximately 13.5%.