Performance analysis of ocean thermal energy conversion system integrated with waste heat recovery from offshore oil and gas platform

被引：5

作者：

Du, Yanlian ^{[1
,2
]}

Peng, Hao ^{[1
,3
]}

Xu, Jiahua ^{[4
]}

Tian, Zhen ^{[4
]}

Zhang, Yuan ^{[4
]}

Han, Xuanhe ^{[5
]}

Shen, Yijun ^{[1
,3
]}

机构：

[1] Hainan Univ, State Key Lab Marine Resource Utilizat South China, Haikou 570228, Peoples R China

[2] Hainan Univ, Sch Informat & Commun Engn, Haikou 570228, Peoples R China

[3] Hainan Univ, Sch Marine Sci & Engn, Haikou 570228, Peoples R China

[4] Shanghai Maritime Univ, Merchant Marine Coll, Shanghai 201306, Peoples R China

[5] Hainan Univ, Mech & Elect Engn Coll, Haikou 570228, Peoples R China

来源：

CASE STUDIES IN THERMAL ENGINEERING | 2024年 / 54卷

基金：

中国国家自然科学基金;

关键词：

Flue gas; Ocean thermal energy conversion; Production water; Thermodynamic performance; Waste heat recovery; ORGANIC RANKINE CYCLES; HYDROGEN-PRODUCTION; OPTIMIZATION; EXERGY; DESIGN; ORC; TURBINE; PLANT;

D O I：

10.1016/j.csite.2024.104027

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

To improve ocean thermal energy conversion (OTEC) system efficiency, four systems utilizing the waste heat recovery from offshore oil and gas platform are proposed, including flue gas boosting OTEC (system I), production water boosting surface seawater OTEC (system II), production water boosting working medium OTEC (system III), and production water boosting vapor OTEC (system IV). The system thermodynamic performance are investigated. The results show that system IV has larger power generation (Wnet), thermal efficiency (eta th) and exergy efficiency (eta ex) than others. Compared with single OTEC system, for system IV, Wnet, eta th and eta ex are increased by 1569.13 %, 70.35 % and 138.26 %, respectively. For system IV, with the increase of flue gas waste heat quantity from 2000 to 4000 kW, Wnet, eta th and eta ex are increased by 562 %, 390 % and 181 % respectively; with the increase of production water waste heat quantity from 0 to 100 kW, Wnet, eta th and eta ex are 12.59 %, 5.73 % and 2.86 % respectively. Wnet rises first and then decreases with the increase of evaporation pressure (Peva) or base fluid concentration (xb), presenting an optimal Peva of 1.5 MPa and xb of 0.82 corresponding to the maximum Wnet; Wnet decreases with the increase of condensation temperature.

引用

页数：19