The rising cost of energy and environmental concerns have led the brewing industry to search for techniques of reducing energy consumption in brewery operations. In this paper, pinch analysis was applied to a typical Ugandan based brewery process to target for the energy requirements of the process. Hint software was used for the analysis. At the chosen ΔTmin of 10℃, the minimum cooling and heating utility requirements of the brewery studied were determined as being 4862.21 kW and 8294.21 kW respectively, with a pinch temperature at 68℃. It was observed that using the technique, 1806.59 kW of energy could be recovered through process to process heat exchange which presented an energy saving potential of 21.5%. It is recommended that results from this study could be used in the design or retrofit of a heat exchanger network of a brewery for improved energy efficiency. Considerations can also be made for other values of ΔTmin.
Leni, C.E., Daniel, G., de Luna Mark, G., Ferdinard, M. and Nurak, G. (2015) Brewery Heat Exchanger Networks Design and Optimization Based on Pinch Analysis at a Single ΔTmin. Philippine Engineering Journal, 36, 54-75.
Muster-Slawitsch, B., Brunner, C., de Lima, D.R. and Schnitzer, H. (2010) The Green Brewery Concept—Energy Efficiency and the Use of Renewable Energy Sources in Breweries. Chemical Engineering Transactions, 21, 649-654.
Christian, D., Kirsten, U., Christian, B. and Gerhard, S. (2014) Heat Integration in Batch Processes Including Heat Streams with Time Dependent Temperature Progression. Applied Thermal Engineering, No. 70, 321-327.
Fernandéz, I., Renedo, C.J., Pérez, S.F., Ortiz, A. and Manana, M. (2012) A Review: Energy Recovery in Batch Processes. Renewable and Sustainable Energy Reviews, No. 16, 2260-2270. https://doi.org/10.1016/j.rser.2012.01.017
Kemp, I.C. and Deakin, A.W. (1989) The Cascade Analysis for Energy and Process Integration of Batch Processes, Part 1: Calculation of Energy Targets. Chemical Engineering Research & Design, No. 67, 495-505.