Solar hydrogen by high-temperature electrolysis: Flowsheeting and experimental analysis of a tube-type receiver concept for superheated steam production

被引：24

作者：

Houaijia, A. ^{[1
]}

Breuer, S. ^{[1
]}

Thomey, D. ^{[1
]}

Brosig, C. ^{[1
]}

Saeck, J. -P. ^{[1
]}

Roeb, M. ^{[1
]}

Sattler, C. ^{[1
]}

机构：

[1] German Aerosp Ctr DLR, D-51147 Cologne, Germany

来源：

PROCEEDINGS OF THE SOLARPACES 2013 INTERNATIONAL CONFERENCE | 2014年 / 49卷

关键词：

solar; hydrogen; high-temperature electrolysis;

D O I：

10.1016/j.egypro.2014.03.208

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：

High-temperature electrolysis (HTE) offers the potential of considerably higher efficiency than conventional alkaline electrolysis when producing hydrogen from water by solar energy. The production rate of the alkaline electrolyzer process is limited since the whole energy demand is covered by electricity. By contrast, in HTE part of the energy can be introduced as high temperature heat from concentrated solar power (CSP) leading to a significantly higher process efficiency. In the internal project SoHTEk a solar tube-type receiver to superheat steam to 700 degrees C for HTE was developed. The receiver was operated in DLR's solar simulator with up to 5 kg/h of steam reaching an outlet temperature of about 700 degrees C at a thermal efficiency of 40 % and a solar power of about 4 kW. In addition, a flowsheeting analysis was carried out of a HTE process with direct steam generation on a solar tower. Simulation of the process at steady-state yielded a thermal-to-hydrogen efficiency of 26 %. A subsequent sensitivity analysis indicated the potential to reach efficiencies of 38 % and more. (C) 2013 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).

引用

页码：1960 / 1969

页数：10

共 12 条

[1]

Breuer S., 2012, IRES 2012 BERL

[2]

Brosig C., 2013, THESIS U APPL SCI CO

[3]

Dibowski G., 2007, Der neue Hochleistungsstrahler des DLR-Grundlagen

[4] ELECTROCHEMICAL HIGH-TEMPERATURE TECHNOLOGY FOR HYDROGEN-PRODUCTION OR DIRECT ELECTRICITY-GENERATION [J].