太阳能热化学与化学回热联合的冷热电系统  

Combined Cooling Heating and Power System Integrated a Solar Thermochemical Process With Chemical Recuperation

作　　者：刘泰秀 隋军[1,2] 刘启斌[1,2] 刘锋[1,2] 

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》2017年第9期1815-1821,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金重点项目(No.51236008)

摘　　要：提出了一种太阳能热化学与化学回热过程联合的冷热电联产系统。利用太阳能驱动甲醇分解反应,产生的合成气在内燃机中燃烧作功,内燃机排烟余热与导热油换热,并驱动甲醇分解反应以回收余热。对系统进行了热力学性能分析,探究了全年典型日下系统热力性能与储能特性规律.研究结果表明:设计工况下系统一次能源利用率为78.4%,太阳能净发电效率为21.1%。在300~1000 W/m^2的直射辐照强度范围内,系统可以实现稳定运行,太阳能净发电效率稳定在19.3%~21.5%的变化范围内。A solar-hybrid combined cooling heating and power system integrated a solar thermo- chemical process with chemical recuperation was proposed. The solar thermal energy was upgraded to chemical energy of synthesis fuel which is produced by the methanol decomposition reaction in the solar thermochemical receives/reactors. Then, the chemical energy of synthesis fuel is released through the internal combustion engine. And a part of exhaust heat is recovered and stored to drive the methanol decomposition reaction as the sensible heat of thermal oil. The thermodynamic analysis has been implemented to evaluate the system performance and illustrate the characteristic of energy storage. The primary energy ratio and net solar-to-electric emciency reaches up to 78.4% and 21.1% on the design condition, respectively. And the net solar-to-electric emciency keeps in the range of 19.3%-21.5% with the solar flux from 300 W/m2 to 1000 W/m2.

关 键 词：太阳能热化学 储能 化学回热 甲醇分解 

分 类 号：TK121[动力工程及工程热物理—工程热物理]