A Granite Bed Storage for a Small Solar Dryer.

Area of Science:

• Engineering
• Materials Science
• Renewable Energy

Background:

• Solar dryers offer sustainable drying solutions.
• Effective thermal energy storage is crucial for continuous operation.
• Granite's thermal and mechanical properties make it a suitable storage material.

Purpose of the Study:

• To investigate the performance of a high-temperature solar dryer with an internal granite bed storage.
• To analyze the impact of granite sphere diameter on the thermal storage system.
• To determine the potential for extending dryer operational time.

Main Methods:

• Experimental testing of the charging process for a granite bed storage system.
• Utilizing granite spheres of three different diameters.
• Analyzing the influence of sphere size on thermal charging and discharging cycles.

Main Results:

• Granite spheres were used to fill the bed storage.
• The charging and discharging processes were experimentally analyzed.
• The diameter of the granite spheres influenced the thermal storage performance.

Conclusions:

• Granite is a viable material for thermal storage in high-temperature solar dryers.
• The use of granite storage can extend the dryer's operational period.
• Optimizing granite sphere size can enhance dryer efficiency and duration.