It will not break if the temperature is not particularly high in a short time.
When not in use, it is recommended to cover the vacuum tube with felt, carpet or quilt to prevent sunlight, because the temperature of the inner wall of the tube vacuum can reach 400 degrees, so if exposed to air, a poor quality vacuum tube will explode directly. The quality of a vacuum tube will also reduce its lifespan. For example, if it can be used for twenty years, the heat collection effect and molecular structure of the film will do so. change due to air drying, and the heat-absorbing coating will fade, reducing service life.
This type of air drying problem will not occur with ceramic solar. This is solar energy integrated into the building. It has the same lifespan as the building and resists air drying. don't be afraid of solar energyconventional. For air drying issues, you can take a look at black, porcelain, and aged.