Abstract
The article is devoted to the issue of thermodynamic optimization of heat transfer systems. Optimization is carried out by an exergy pinch method. This method includes the advantages of exergy analysis and pinch method. Exergy analysis takes into account the quantitative and qualitative characteristics of thermal processes, the pinch method allows structural and parametric optimization of heat transfer systems. The article presents a mathematical model for optimization by exergy pinch analysis. This model allows automated system optimization. Exergy pinch analysis allows more efficient use of energy and resources at the enterprise, which is relevant today.
Highlights
Russia is the largest exporter of oil and gas, increasing the efficiency of the refinery is an urgent task requiring a thorough scientific approach to their study [1, 2].The exergy method of thermodynamic analysis allows one to take into account the energy potential of thermal processes [3,4,5,6]
Heat exchange systems are optimized by using the exergy pinch method
It is necessary that the recovery of exergy of hot and cold flows is maximum; the difference between exergies of hot and cold flows tends to a minimum
Summary
Russia is the largest exporter of oil and gas, increasing the efficiency of the refinery is an urgent task requiring a thorough scientific approach to their study [1, 2]. The exergy method of thermodynamic analysis allows one to take into account the energy potential (qualitative characteristics) of thermal processes [3,4,5,6]. The pinch method is based on a change in enthalpy, which does not take into account the qualitative characteristics of energy [9]. Heat exchange systems are optimized by using the exergy pinch method. We performed an exergy pinch analysis of the heat exchange system of the boiler unit and analysis of the heat exchange system of the primary oil refining unit [10, 11]. The results of the analysis of the exergy pinch allow us to formulate and justify specific design measures to improve the energy efficiency of heat transfer systems, which is very important for the oil refining industry [12, 13]
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