保温型真空管集热器由两个同心玻璃管和一个在管子之间的真空端连接,选择性表面是喷镀在内部玻璃管的表面(真空面),太阳能是通过选择性表面吸收的,而且传递到位于内部玻璃管的一个放热系统,这样使得能量有可能通过管子的开启端运动,它取决于放热系统应用的型式。如果选择性表面的温度可能比热运动流体更高,这样对集热器的运转性能有不利的影响。为了确定有关放热系统不同设计的效率,因此在运行期间选择性表面的温度测量 Insulated vacuum tube collectors are connected by two concentric glass tubes and a vacuum end between the tubes. The selective surface is sprayed onto the surface (vacuum side) of the inner glass tube. The solar energy is absorbed through a selective surface, and It is delivered to an exothermic system located inside the glass tube, which makes it possible to move the energy through the open end of the tube, depending on the type of exothermic system being used. If the temperature of the selective surface may be higher than the hot moving fluid, this adversely affects the operating performance of the collector. In order to determine the efficiency of the different designs for the exothermic system, the temperature of the selective surface during operation