By analysis different production technology and materials , we choose titanium and k9 - galss to make agglomeration and get the applicable temperature - time curve as a result of theory research and test 文中通過分析研究制造提升鏡的各種工藝與材料,選擇了用鈦合金與k9玻璃進行溫控封接的制造方案,并且通過理論與試驗研究得到了可以推廣應(yīng)用的實用溫度-時間曲線。
In fluent , the flow field of the tube wall , center , top , middle and bottom of the evacuated solar collector tube can be observed , the temperature - time curve and radial temperature gradient can be obtained , the heat loss of different part can be directly captured . 3 . all kinds of effect factors of the flow field and temperature field have been analyzed 通過fluent計算,清楚地觀察到太陽能真空集熱管壁面和中心部分,頂部、中部和底部在各種工況下的流場分布均不相同;得出了各種工況下的溫度-時間變化曲線,沿軸線方向的溫度梯度;同時還計算了各部分熱損的傳熱流量; 3