Fodor Z., Klemeš J., Varbanov P., Walmsley M., Atkins M., Walmsley T., 2012, Total Site Targeting with Stream Specific Minimum Temperature Difference, Chemical Engineering Transactions, 29, 409-414.
The paper focuses on extending traditional Total Site Integration methodology to produce more meaningful utility and heat recovery targets for the process design. The traditional methodology leads to inadequate results due to inaccurate estimation of the overall Total Site heat recovery targets. The new methodology is a further development of a recently extended traditional pinch methodology. The previous extension was on the introduction of using an individual minimum temperature difference (?Tmin) for different processes so that the ?Tmin is more representative of the specific process. Further this paper deals with stream specific ?Tmin inside each process by setting different ?T contribution (?Tcont) and also using different ?Tcont between the process streams and the utility systems. The paper describes the further extended methodology called stream specific targeting methodology. A case study applying data from a real diary factory is used to show the differences between the traditional, process specific and stream specific total site targeting methodologies. The extended methodology gives more meaningful results at the end of the targeting with this avoiding the over or under estimated heat exchanger areas in the process design.
