Food industry is one of the most energy-consuming industries. Exergy analysis for several food production lines had been the subject of some studies in the past. However, dairy industry has a significant importance among food industry from energetic point of view since it covers many heating and cooling processes. Energy and exergy analyses are commonly used techniques for performance assessment of thermal system where exergy analysis is known as the powerful tool. In this context, exergy calculation methodology and a review of exergetic assessment in dairy industry are the subject of this study for the first time to the best of author’s knowledge. In this chapter, first of all, exergy analysis methodology is presented, and next, assessment of exergy analysis of some dairy processes including milk pasteurization, milk powder process, flavored yoghurt production, yoghurt production and yoghurt drink processes are reviewed, comprehensively. Application of the exergy analysis in dairy industry supplies possibility to perform exergetic design, simulation, analysis and performance assessment.
Part of the book: Application of Exergy