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Energy Conversion and Management
Vol. 104, 2015, Pages: 32–43

Design and analysis of heat recovery system in bioprocess plant

Aleksandar Anastasovski, Predrag Raškovic, Zvonimir Guzovic

Faculty of Engineering, International Balkan University, Tasko Karadza 11a, 1000 Skopje, The Former Yugolav Republic of Macedonia.


The paper deals with the heat integration of a bioprocess plant which produces yeast and ethyl-alcohol. The referent plant is considered to be a multiproduct batch plant which operates in a semi-continuous mode. The design of a heat recovery system is performed by batch pinch analysis and by the use of the Time slice model. The results obtained by direct and indirect heat integration approaches are presented in the form of cost-optimal heat exchanger networks and evaluated by different thermodynamic and economic indicators. They signify that the heat recovery system without a heat storage opportunity can be considered to be a more profitable solution for the energy efficiency increase in a plant.

Graphical abstract

Keywords: Heat integration; Bioprocess plant; Batch pinch analysis; Time slice model; Heat storage opportunity.

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