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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 42862 (06)
- University: Sharif University of Technology
- Department: Chemical and Petroleum Engineering
- Advisor(s): Roostaazad, Reza
- Abstract:
- The daily increase of fuel prices, decrease of fuel resources and the need for controlling environmental pollution, reflect the importance of optimizing the heat recovery in different industries. In the past 20 years, Pinch technology has been considered as a powerful tool used for, recovering wasted energies, optimizing the energy transfer between hot and cold streams and reducing the need for additional services. In this thesis, Pinch technology is used to optimize the process of wafer and chocolate production in one of the KitKat’s factories and different retrofits for the increase of the heat recovery are proposed. urthermore, the data collected at this factory is used to investigate the potential of heat storage in this factory. The purpose of this project is to identify the potential of energy recovery and storage in the hot and cold utilities. The energy storage potential in the studied factory is shown to be 283KW which is about 26% of the hot utilities needed for the system. Four retrofits are proposed for the factory’s optimization. In the first two retrofits, the existing pinch violations are recovered by developing the heat exchanger network. The third retrofit, utilities with low operational costs are to replace the existing utilities. Finally, with heat pump integration implemented in the system, the usage of hot and cold utilities can be greatly reduced. Therefore the possibility of eliminating steam usage and reducing the cooling utilities in the system is achieved.
- Keywords:
- Process Integration ; Heat Exchangers ; Pinch Technology ; Chocolate Manufacturing ; Wafer Manufacturing
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