Hybrid solar-geothermal power generation: Optimal retrofitting

被引：96

作者：

Ghasemi, Hadi ^{[1
]}

Sheu, Elysia ^{[1
]}

Tizzanini, Alessio ^{[2
]}

Paci, Marco ^{[2
]}

Mitsos, Alexander ^{[1
,3
]}

机构：

[1] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

[2] ENEL Ingn & Innovaz SpA, Area Tecn Ric, I-56122 Pisa, Italy

[3] Rhein Westfal TH Aachen, AVT Proc Syst Engn SVT, D-52056 Aachen, Germany

来源：

APPLIED ENERGY | 2014年 / 131卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Organic Rankine cycle; Geothermal energy; Solar energy; Parabolic trough; Retrofit; ORGANIC RANKINE-CYCLE; WORKING FLUIDS; OPTIMIZATION; ENERGY; SYSTEM;

D O I：

10.1016/j.apenergy.2014.06.010

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A model is developed for an existing organic Rankine cycle (ORC) utilizing a low-temperature geothermal brine including the performance characteristics of the components. The model is validated with a set of 7200 operation data collected in one-year. The operation of the ORC is optimized allowing for variable number of working turbines. The developed model is retrofitted with a low-temperature solar trough system. A new hybridization strategy is developed that achieves a significant boost in the net output power of the system compared to the geothermal ORC. This hybridization approach enables better extraction of geothermal energy. The hybrid system shows higher second-law efficiency (up to 3.4% difference) compared to combined individual geothermal and solar systems. With this hybridization approach, the hybrid system is a better option than individual geothermal and solar system at all ambient temperatures. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：158 / 170

页数：13

共 34 条

[1] Technical and economical analysis of a solar-geothermal hybrid plant based on an Organic Rankine Cycle [J].