Thermal Properties of (Na&amp;lt;sub&amp;gt;0.6&amp;lt;/sub&amp;gt;K&amp;lt;sub&amp;gt;0.4&amp;lt;/sub&amp;gt;)NO&amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt; Thermal Storage System in the Solid-Solid Phase
International journal of energy and power engineering