Thermo-economic investigation on the hydrogen production through the stored solar energy in a salinity gradient solar pond: A comparative study by employing APC and ORC with zeotropic mixture

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归属学者：

李姣姣

归属院系：

商学院（监察审计学院）

作者：

Li, Jiaojiao1 ; Dhahad, Hayder A. ; Anqi, Ali E. ; Rajhi, Ali A.

摘要：

In this paper, a salinity gradient solar pond (SGSP) is used to harness the solar energy for hydrogen production through two cycles. The first cycle includes an absorption power cycle (APC), a proton exchange membrane (PEM) electrolyzes, and a thermoelectric generator (TEG) unit; in the second one, an organic Rankine cycle (ORC) with the zeotropic mixture is used instead of APC. The cycles are analyzed through the thermoeconomic vantage point to discover the effect of key decision variables on the cycles' performance. Finally, NSGA-II is used to optimize both cycles. The results indicate that employing ORC with zeotropic mixture leads to a better performance in comparison to utilizing APC. For the base mode, unit cost product (UCP), exergy, and energy efficiency when APC is employed are 59.9 $/GJ, 23.73%, and 3.84%, respectively. These amounts are 47.27 $/GJ, 29.48%, and 5.86% if ORC with the zeotropic mixture is utilized. The APC and ORC generators have the highest exergy destruction rate which is equal to 6.18 and 10.91 kW. In both cycles, the highest investment cost is related to the turbine and is 0.8275 $/h and 0.976 $/h for the first and second cycles, respectively. In the optimum state the energy efficiency, exergy efficiency, UCP, and H-2 production rate of the system enhances 42.44%, 27.54%,15.95%, and 38.24% when ORC with the zeotropic mixture is used. The maximum H-2 production is 0.47 kg/h, and is obtained when the mass fraction of R142b, LCZ temperature, pumps pressure ratio, generator bubble point temperature are 0.603, 364.35 K, 2.12, 337.67 K, respectively. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

语种：

英文

出版日期：

2022-02-08

学科：

化学; 石油与天然气工程; 动力工程及工程热物理

提交日期：

2022-03-24

引用参考：

Li, Jiaojiao; Dhahad, Hayder A.; Anqi, Ali E.; Rajhi, Ali A.. Thermo-economic investigation on the hydrogen production through the stored solar energy in a salinity gradient solar pond: A comparative study by employing APC and ORC with zeotropic mixture[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2022(12):7600-7623.

  • dc.title
  • Thermo-economic investigation on the hydrogen production through the stored solar energy in a salinity gradient solar pond: A comparative study by employing APC and ORC with zeotropic mixture
  • dc.contributor.author
  • Li, Jiaojiao; Dhahad, Hayder A.; Anqi, Ali E.; Rajhi, Ali A.
  • dc.contributor.affiliation
  • Southwest Univ Polit Sci & Law, Sch Business, Chongqing 401120, Peoples R China;Univ Technol Baghdad, Mech Engn Dept, Baghdad, Iraq;King Khalid Univ, Coll Engn, Dept Mech Engn, Abha 61421, Saudi Arabia
  • dc.contributor.corresponding
  • Li, JJ (corresponding author), Southwest Univ Polit Sci & Law, Sch Business, Chongqing 401120, Peoples R China.
  • dc.publisher
  • INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • dc.identifier.year
  • 2022
  • dc.identifier.issue
  • 12
  • dc.identifier.volume
  • 47
  • dc.identifier.page
  • 7600-7623
  • dc.date.issued
  • 2022-02-08
  • dc.language.iso
  • 英文
  • dc.subject
  • ORGANIC RANKINE CYCLES; THERMOELECTRIC GENERATOR; PEM ELECTROLYZER; EXERGY ANALYSIS; WASTE HEAT; POWER; PERFORMANCE; WORKING; DRIVEN; WATER
  • dc.description.abstract
  • In this paper, a salinity gradient solar pond (SGSP) is used to harness the solar energy for hydrogen production through two cycles. The first cycle includes an absorption power cycle (APC), a proton exchange membrane (PEM) electrolyzes, and a thermoelectric generator (TEG) unit; in the second one, an organic Rankine cycle (ORC) with the zeotropic mixture is used instead of APC. The cycles are analyzed through the thermoeconomic vantage point to discover the effect of key decision variables on the cycles' performance. Finally, NSGA-II is used to optimize both cycles. The results indicate that employing ORC with zeotropic mixture leads to a better performance in comparison to utilizing APC. For the base mode, unit cost product (UCP), exergy, and energy efficiency when APC is employed are 59.9 $/GJ, 23.73%, and 3.84%, respectively. These amounts are 47.27 $/GJ, 29.48%, and 5.86% if ORC with the zeotropic mixture is utilized. The APC and ORC generators have the highest exergy destruction rate which is equal to 6.18 and 10.91 kW. In both cycles, the highest investment cost is related to the turbine and is 0.8275 $/h and 0.976 $/h for the first and second cycles, respectively. In the optimum state the energy efficiency, exergy efficiency, UCP, and H-2 production rate of the system enhances 42.44%, 27.54%,15.95%, and 38.24% when ORC with the zeotropic mixture is used. The maximum H-2 production is 0.47 kg/h, and is obtained when the mass fraction of R142b, LCZ temperature, pumps pressure ratio, generator bubble point temperature are 0.603, 364.35 K, 2.12, 337.67 K, respectively. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
  • dc.identifier.issn
  • 0360-3199
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