基于TRNSYS的太阳能谷电蓄能供热采暖系统性能研究

为了研究太阳能谷电蓄能供热采暖系统运行特性,采用TRNSYS软件建立系统各部件模型,分析了太阳能辐照强度、集热面积和空气流量对系统太阳能保证率的影响,对系统进行优化研究。结果表明：太阳能辐射强度对系统太阳能保证率的影响较大,拉萨全年太阳能保证率波动比上海和北京小;太阳能保证率与集热面积呈正相关;空气流量对太阳能保证率影响较小,当空气流量为40 m³/(h?m²) 时太阳能保证率最大,相比36 m³/(h?m²)工况提高了0.26%;选择集热面积为650 m²、最佳空气流量为40 m³/(h?m²) 的优化系统,相比集热面积为716 m²、空气流量为36 m³/(h?m²) 工况下的年均太阳能保证率降低了1.22%。本研究可为太阳能谷电蓄能系统的后续研究提供参考。

Experimental Research on Solar Valley Energy Storage Heating System Based on TRNSYS

In order to study the operating characteristics of the solar valley energy storage heating system, the system mathematical model was established by using Transient System Simulation (TRNSYS) program. The influence of solar radiation intensity, heat collection area and air flow on the solar energy guarantee rate of the system were analyzed, and the system was optimized. The results showed that the solar radiation intensity has great influence on the solar guarantee rate of the system, and the annual fluctuation of solar guarantee rate in Lhasa was smaller than that in Shanghai and Beijing. The solar guarantee rate was positively correlated with the area of the solar collector, and was little influenced by the air flow. The solar guarantee rate was the largest when the air flow rate was 40 m³/(h?m²), which increased by 0.26% compared with the air flow of 36 m³/(h?m²). The optimized system with a collector area of 650 m² and an optimal air flow of 40 m³/(h?m²) was selected. Compared with the system with an heat collection rate of 716 m² and air flow of 36 m³/(h?m²), the average annual solar guarantee rate was reduced by 1.22%. It can provide reference for the follow-up research of the solar valley energy storage heating system.