Abstract
Pinch technology has developed for thermodynamic analysis of chemical processes. This technology targets the most possible modification prior to detailed design. Pinch technology it is not sufficient in analyzing systems involving beat and power such as power plants. Exergy analysis, on the other hand, provides a powerful tool for heat and power analysis, although at times it does not provide clear practical design guideline. To prevailing over the weaknesses of both analysis, in obtaining a practical design guideline for the analysis of heat and power systems, combined pinch and exergy analysis (CPEA) is developed. This paper introduces the application of CPEA to advanced steam power plant. The paper presents a new methodology in optimization of steam extractions mass flowrate from multiple pressure levels of steam turbine with using CPEA. Efficiency improvement about 0.34% can be obtained by application of new approach and likewise, hot and cold utilities of cycle can be decreased.
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