太阳能与甲醇热化学互补的分布式能源系统研究  

Research on Distributed Energy System With Solar-Methanol Thermochemical Hybridization

作　　者：许达[1,2] 刘启斌[1] 隋军[1] 金红光[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院大学,北京100049

出　　处：《工程热物理学报》2013年第9期1601-1605,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51276214;No.51236008);国家重点基础研究发展计划资助(No.2010CB227301)

摘　　要：本文提出一种基于中低温太阳能与甲醇热化学互补的分布式冷热电供能系统。基于热力学基本定律,对系统作了能量平衡分析和(火用)平衡分析,探讨了变太阳辐照下系统的热力性能和储气蓄能的变化特性规律。结果表明:设计工况下,系统的一次能源效率达89.36%,(火用)效率达到47.10%,太阳直射辐照强度从500 W/m^2变化到900 W/m^2时,系统一次能源效率和冷、热、电功率输出保持稳定。本文的研究成果为高效利用中低温太阳能热化学技术与分布式冷热电能源系统集成技术提供了新途径。A CCHP system based on the mid-and-low temperature solar thermal energy and methanol thermochemical hybridization was proposed. Based on the fundamental laws of thermo- dynamics, the analysis of energy and exergy of the system was carried out, and the performance of the system and the character of chemical energy storage under variable solar radiation were discussed. The result shows that under the design condition the primary energy efficiency of the system reaches up to 89.36%, the exergy efficiency is 47.10%. While the direct solar radiation ranges from 500 W/m2 to 900 W/m2, the primary energy efficiency and the output of cooling, heat and power remain stable. This encouraging results provide a new approach to high efficient utilization of mid-and-low temperature solar thermochemical energy hybridization with CCHP system.

关 键 词：中低温太阳能 太阳能热化学 甲醇分解 分布式供能系统 储能 

分 类 号：TK123[动力工程及工程热物理—工程热物理]