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Heat storage system utilizing phase change materials government rights

United States Patent

September 12, 2000
View the Complete Patent at the US Patent & Trademark Office
A thermal energy transport and storage system is provided which includes an evaporator containing a mixture of a first phase change material and a silica powder, and a condenser containing a second phase change material. The silica powder/PCM mixture absorbs heat energy from a source such as a solar collector such that the phase change material forms a vapor which is transported from the evaporator to the condenser, where the second phase change material melts and stores the heat energy, then releases the energy to an environmental space via a heat exchanger. The vapor is condensed to a liquid which is transported back to the evaporator. The system allows the repeated transfer of thermal energy using the heat of vaporization and condensation of the phase change material.
Salyer; Ival O. (Dayton, OH)
The University of Dayton (Dayton, OH)
09/ 338,717
June 23, 1999
GOVERNMENT RIGHTS The Government has rights in this invention pursuant to Contract No. 19X-SC542C awarded by the Department of Energy.