太阳能光谱选择性吸收涂层研究进展

全面阐述了5种太阳能光谱选择性吸收涂层的作用机理和制备方法,综述了国内外该领域的研究工作和最新研究成果,并对选择性吸收涂层的发展方向进行了探讨。

卫星稳态热模型参数修正方法研究

为了研究卫星稳态热模型参数的修正方法,应用Thermal Desktop和Sinda/Fluint软件对一卫星热分析模型的表面涂层热光学性质和接触换热系数进行了参数修正。研究结果显示,在对上述两种参数进行同时修正时,尽管采用多种方法,但所得出的修正结果精度都不高。针对上述问题,提出了对不确定参数进行分层修正的方法,即先修正对设备温度影响较大、与设备温度相关性较高的全局关键参数,在此基础上再进一步修正局部关键参数。分析结果表明,采用分层修正时,参数修正值与真值之间最大相对误差为3.33%,设备温度计算值与真值之间的最大误差为2.60%,和常规修正的方法相比,分层修正的修正精度大大提高。

he Design of Efficient Heat Transfer Based on Flat Plate Solar Water Heater

This is an improved design based on the existing plate type solar water heaters. It aims at making full use of solar energy. To fully absorb radiation, it absorbs coating selectively by adopting the magnetron sputtering technology AL-N/AL. this design conduct heat through aluminum material which can reduce the cost meanwhile conduct heat effectively. To ensure the quality of the water at the same time improve the utilization rate of solar energy, this design use phase change for second heat exchange. Take Shanghai for example, where this design and heat transfer model are applied, the average efficiency of water heaters can achieve 68%, which has proven the feasibility of the design. In a word, this design can achieve the goal of energy conservation and emissions reduction and has broad market prospects.

绝对辐射温度计杂散光抑制的仿真分析

绝对辐射温度计可用于高温段热力学温度测量，其滤光片辐射计所接收的信号十分微弱，杂散光将会对实验结果产生一定影响。使用基于蒙特卡罗法的光线追迹模拟软件Trace Pro建立模型进行仿真测试，可以得到因内壁多次反射而产生的杂散光情况。通过安装挡光板和使用高吸收率涂层等方式，可对杂散光进行抑制。本文为减小绝对辐射温度计多次反射杂散光提供了解决思路，并给出了相应的模拟结果。