Encapsulaton Of High Temperature Molten Salts

摘要

The present disclosure relates to a method of encapsulating microcapsules containing relatively high temperature phase change materials and the microcapsules so produced. The microcapsules are coated with an inorganic binder, film former and an inorganic filler. The microcapsules may include a sacrificial layer that is disposed between the particle and the coating. The microcapsules may also include an inner coating layer, sacrificial layer and outer coating layer. The microcapsules are particularly useful for thermal energy storage in connection with, e.g., heat collected from concentrating solar collectors.

主权项

1. A method of encapsulating microcapsules containing phase change material, comprising:
supplying a phase change material having a melting point of 200° C. to 600° C. and a largest cross-sectional dimension of 0.5 mm to 100 mm; applying a coating to said phase change material wherein said coating includes an inorganic binder, a film former comprising an organic polymer at a MW of greater than or equal to 5000, and an inorganic filler at a particle size of less than or equal to 50 μm and wherein said coating has a thickness of 50 μm to 1000 μm; and heating said coating wherein at least a portion of said organic polymer of said film former is removed.