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主页 旧刊 有关人员 未来大会 American Society of Thermal and Fluids Engineering

ISSN 在线: 2379-1748

ISBN 打印: 978-1-56700-517-2 (Flash drive)

5-6th Thermal and Fluids Engineering Conference (TFEC)
May, 26–28, 2021 , Virtual

ENERGY AND EXERGY ANALYSIS OF A NEW COMBINED SYSTEM FOR POWER, COOLING, HEATING AND FRESHWATER PRODUCTION BASED ON GAS TURBINE

Get access pages 389-403
DOI: 10.1615/TFEC2021.ens.032430

摘要

Global energy consumption is continuously increasing in the world due to population growth and improving living standards. Also, fresh water demand is projected to increase by around 55% by 2050. Therefore, designing and developing a system utilizing a combined power cycle to produce fresh water is an attractive solution to address these needs. This paper proposes a new combined system for power, cooling, heating, and freshwater production. A gas turbine (GT) cycle is used as the top cycle to generate power. The GT cycle's waste heat is utilized to drive two bottom cycles, a supercritical CO2 recompression Brayton cycle (SCRBC) and multi-effect desalination with thermal vapor compressor (MED-TVC) and heating system. The waste heat of the SCRBC is used to drive an absorption cooling cycle (ACC). A detailed steady-state model for the proposed system is developed using Engineering Equation Solver (EES) to perform energy and exergy analysis. Also, a parametric study is conducted to show the influence of design parameters on system performance. The results show that the proposed system's overall energy utilization factor is around 61%, and the total exergy efficiency is around 39%. The highest exergy destruction occurs in the combustion chamber, followed by the heat recovery steam generator (HRSG) and the MED-TVC unit.
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