Abstract
The purpose of this research is to improve the performance of the chemical thermal storage method using Na \2S hydration and dehydration. For the purpose, comparing method of using Na_2S particles and of porous soaked with liquid Na_2S hydration (composite method). Particle material and composite material are dehydrated and hydrated in a chamber under the low pressure. Inside temperature of materials, reaction velocity, and reaction rate, etc. are obtained as an experimental result while both reactions are operated until they converge. As a result, we confirmed that the reaction velocity of a composite material is quicker than that of a particle sample. Thereby, the predominance of composite method was shown.
