Stratified storage tank for storing thermal energy, has partition wall extended over height level region, so that passage opening is below highest levels of height of partition wall and fluid exchange is performed freely in interior space

摘要

The tank (1) has an interior space (8) with a container (2). A partition wall (26) divides the interior space into interior space regions. A phase transition material with large phase transition temperature is arranged in the upper portion of interior space filled with fluid (24). The partition wall has passage opening for communicatively connecting two interior regions. The partition wall is extended over height level region (29), so that the passage opening is below highest levels of height of partition wall and the fluid exchange is performed freely in interior space locked outward.