Solar container due to thermal expansion

One significant effect to take into account is thermal expansion, which refers to the tendency of materials to change in shape, volume, and length in response to temperature variations. In fact virtually all materials exhibit some linear dimensional change as a function of temperature change and accordingly, a Coefficient of Thermal Expansion ismaterial property that is typically determined by empirical. Sodium nitrate is considered as a potential PCM for concentrated solar power applica-tions. The closed expansion vessel with membrane consists of a closed container divided into two parts by a membrane which separates water from gas (nitrogen or air) and which acts as an expansion compensation device.