期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 38, 期 22, 页码 9330-9342出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2013.05.010
关键词
Thermophotovoltaic; Micro-emitter; Hydrogen; Ammonia; Heat recirculation
资金
- National Research Foundation of Korea (NRF)
- Korea government (MEST) [2012-0004901]
The potential of ammonia (NH3)-hydrogen (H-2) blends as a carbon-free, green fuel in a 1-10W micro-thermophotovoltaic (micro-TPV) device is evaluated experimentally. When NH3-H-2 blends are used directly (without any modification) in a heat-recirculating micro-TPV configuration that has an installation of gallium antimonide (GaSb) photovoltaic cells and was developed for hydrocarbon fuel, low temperature on the micro-emitter outer surface is observed, generating a secondary flame at the micro-emitter outlet. Thus, the micro-TPV device has been modified to eliminate the secondary flame by enhancing the residence time of fed NH3-H-2-air mixtures and uniform burning a cyclone adapter for a fuel-air mixture supply system and a helical adapter for the fuel-air mixture upstream of the micro-emitter. Under optimized design and operating conditions, the micro-TPV device produces 5.2W with an overall efficiency of 2.1% and an emitter efficiency of 37%, indicating the maximum temperature of the micro-emitter outer surface up to 1408 K. Thus, the feasibility of using NH3-H-2 blends in practical micro power-generation devices has been demonstrated, implying the potential of partial NH3 substitution to improve the safety of pure H-2 use with no carbon generation. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据