HYDROGEN AND FUEL-CELLS - THE CLEAN ENERGY SYSTEM

被引：60

作者：

ROHLAND, B

NITSCH, J

WENDT, H

机构：

[1] DLR STUTTGART,STUDIENGRP ENERGIESYST,W-7000 STUTTGART 80,GERMANY

[2] TH DARMSTADT,W-6100 DARMSTADT,GERMANY

来源：

JOURNAL OF POWER SOURCES | 1992年 / 37卷 / 1-2期

关键词：

D O I：

10.1016/0378-7753(92)80084-O

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hydrogen will play an important role in a future energy economy mainly as a storage and transportation medium for renewable energy sources. To illustrate this possible strategy, first a scenario for the FRG is presented as an example, where renewable energies are used in an extensive but technologically achievable way. Renewable shares of 13% (2005), 36% (2025) and 69% (2050) on the total energy demand will lead to hydrogen shares of 11% in 2025 and 34% in 2050. An essential part of such a strategy is the very efficient conversion of hydrogen into useful energies like electricity and beat mainly by fuel cells in the co-generation mode. Fuel cells offer considerably higher conversion efficiencies with respect to electricity and also allow the use of waste heat at different temperature levels. Whereas low- and medium-temperature fuel cells will have advantages if pure hydrogen is used, high-temperature fuel cells offer the possibility to perform a mixed biogas-hydrogen conversion with a high energy yield. Both systems will be discussed and achievable efficiencies and costs are presented in a future energy scenario.

引用

页码：271 / 277

页数：7