紧凑型槽式太阳能集热器与建筑用能匹配特性分析

Analysis of matching characteristics of compact trough solar collector and building energy consumption

我国建筑能耗占全国总能耗约40%,将太阳能与建筑相结合,可有效降低建筑能耗对化石能源的依赖,助力“双碳”目标实现。基于一种紧凑型热管真空管槽式集热器,设计了吸收式制冷空调系统,并与地源热泵集成,构建了多能互补耦合供能系统。首先,对比分析紧凑型热管真空管槽式集热器与普通真空管式集热器的集热性能;然后,以某600 m^(2)建筑物为供能对象,在TRNSYS软件中搭建太阳能空调系统,对该建筑进行供能;最后,搭建多能互补供能系统,提升整体供能效率。结果表明:该紧凑型热管真空管槽式集热器与普通真空管式集热器相比,集热温度提升25%,集热面积减少52.5%,集热量提升2.5倍。多能互补太阳能空调系统能极大改善太阳能系统与季节的匹配性,满足建筑物全年的供能需求及热水供应。该系统对太阳能与建筑一体化研究以及建筑供能研究有良好的参考价值。

Building energy consumption in China accounts for about 40%of the countrys total energy consumption.Integrating solar energy with buildings can effectively reduce the dependency on fossil energy for building energy consumption,aiding in the achievement of the“dual carbon”goals.This paper designs an absorption refrigeration air conditioning system based on a compact heat pipe vacuum tube trough collector and integrates it with a ground source heat pump to build a multi-energy complementary coupled energy supply system.Firstly,the heat collection performance of the compact heat pipe vacuum tube trough collector was compared with that of a common vacuum tube collector.Then,using a 600 m2 building as the energy supply target,a solar air conditioning system was modeled in TRNSYS software to supply energy to the building.Finally,a multi-energy complementary energy supply system was set up to improve the overall energy supply efficiency.The results showed that compared to regular vacuum tube collectors,the compact heat pipe vacuum tube trough collector increased the heat collection temperature by 25%,reduced the heat collection area by 52.5%,and increased the heat collection capacity by 2.5 times.The multi-energy complementary solar air conditioning system significantly improves the seasonal matching of the solar energy system and can meet the buildings year-round energy and hot water supply needs.The system provides valuable references for the research on solar energy and building integration and building energy supply.