遮阳式光伏新风系统性能模拟与优化

Performance Simulation and Optimization Analysis of A Fresh Air System Integrated with Shading Photovoltaics

对一种新型遮阳式光伏新风系统进行研究,该系统在夏季利用光伏板发电的同时为建筑遮阳,在冬季则可以利用光伏板余热加热新风.采用类区域方法建立了遮阳式光伏新风系统的光电光热转换模型,并采用实验数据对系统模型进行验证,在此基础上对遮阳式光伏新风系统进行优化.研究表明:随着新风量增大,光伏板发电效率、新风得热量与集热效率增大,新风温升与送风温度减小;系统发电效率和集热效率随太阳辐照强度的增大而增大.本文研究的遮阳式光伏新风系统能够有效实现太阳能发电、建筑遮阳和新风加热功能,为建筑节能提供一种新方法.

A type of fresh air system integrated with shading photovoltaic is researched. In summer, photovoltaic panel is used for shading and electricity generation. In winter, this system can generate power and heat fresh air by extra thermal energy of PV panel. By using class region method, a photovoltaic and photo-thermal conversion model is established to simulate the performance of the fresh air system, and the system model is validated by experimental data. On this basis, the fresh air volume of the fresh air system integrated with shading photovoltaic is optimized. The results show that the photovoltaic power generation efficiency, the heat gain of the fresh air and the heating efficiency increase, while temperature rise of fresh air and outlet temperature of fresh air reduce with the increase of the fresh air volume, and the power generation efficiency and heat collection efficiency grow with the increase of solar radiation intensity. In this paper, the fresh air system integrated with shading photovoltaic has functions of electricity generation, shading and fresh air heating, and provides a new method for building energy saving.