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Analysis of a feasible trigeneration system taking solar energy and biomass as co-feeds

机译：以太阳能和生物质为辅的可行的三联发电系统分析

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摘要

The trigeneration systems are widely used owing to high efficiency, low greenhouse gas emission and high reliability. Especially, those trigeneration systems taking renewable energy as primary input are paid more and more attention. This paper presents a feasible trigeneration system, which realizes bio-mass and solar energy integrating effective utilization according to energy cascade utilization and energy level upgrading of chemical reaction principle. In the proposed system, the solar energy with mid-and low temperature converted to the chemical energy of bio-gas through gasification process, then the bio-gas will be taken as the fuel for internal combustion engine (ICE) to generate electricity. The jacket water as a byproduct generated from ICE is utilized in a liquid desiccant unit for providing desiccant capacity. The flue gas is transported into an absorption chiller and heat exchanger consequently, supplying chilled water and domestic hot water. The thermodynamic performance of the trigeneration system was investigated by the help of Aspen plus. The results indicate that the overall energy efficiency and the electrical efficiency of the proposed system incase study are 77.4% and 17.8%, respectively. The introduction of solar energy decreases the consumption of biomass, and the solar thermal energy input fraction is 8.6%. In addition, the primary energy saving ratio and annual total cost saving ratio compared with the separated generation system are 16.7% and 25.9%, respectively. (C) 2016 Elsevier Ltd. All rights reserved.
机译：由于高效，低温室气体排放和高可靠性，三代发电系统得到了广泛的应用。特别是，那些以可再生能源为主要输入的三代发电系统受到越来越多的关注。本文提出了一种可行的三联发电系统，根据能量级联利用和化学反应原理的能级提升，实现了生物质能与太阳能的有效利用相结合。在提出的系统中，中低温太阳能通过气化过程转化为沼气的化学能，然后将沼气作为内燃机的燃料发电。由ICE产生的作为副产物的夹套水被用于液体干燥剂单元中以提供干燥剂容量。烟气因此被输送到吸收式冷却器和热交换器中，从而供应冷却水和生活热水。在Aspen plus的帮助下，研究了三联产系统的热力学性能。结果表明，案例研究中所提出系统的整体能源效率和电气效率分别为77.4％和17.8％。太阳能的引入减少了生物质的消耗，太阳能热能输入比例为8.6％。此外，与分离发电系统相比，一次能源节约率和年度总成本节约率分别为16.7％和25.9％。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Energy Conversion & Management》 |2016年第8期|74-84|共11页
  • 作者

    Zhang Xiaofeng; Li Hongqiang; Liu Lifang; Zeng Rong; Zhang Guoqiang;

  • 作者单位

    Hunan Univ, Coll Civil Engn, Natl Ctr Int Res Collaborat Bldg Safety & Environ, Changsha 410082, Hunan, Peoples R China;

    Hunan Univ, Coll Civil Engn, Natl Ctr Int Res Collaborat Bldg Safety & Environ, Changsha 410082, Hunan, Peoples R China;

    Hunan Univ, Coll Civil Engn, Natl Ctr Int Res Collaborat Bldg Safety & Environ, Changsha 410082, Hunan, Peoples R China;

    Hunan Univ, Coll Civil Engn, Natl Ctr Int Res Collaborat Bldg Safety & Environ, Changsha 410082, Hunan, Peoples R China;

    Hunan Univ, Coll Civil Engn, Natl Ctr Int Res Collaborat Bldg Safety & Environ, Changsha 410082, Hunan, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Biomass gasification; Solar energy; Internal combustion engine; Trigeneration system; System integrating;

    机译：生物质气化太阳能内燃机三联产系统集成;

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