| 摘要 |
PROBLEM TO BE SOLVED: To overcome problems found in the prior art heat accumulative tank set at a building's underground, i.e., (a) a connected type mixing water tank has a low efficiency of the tank by about 65% and is not suitable for accumulating a large amount of heat, (b) a general temperature laminated type heat accumulative tank made as a single tank does not have any low water level, but must be constructed to have a special structure for a building body, resulting in that its cost is increased, and (c) in turn, the low water level temperature laminated heat accumulative tank requires a diffuser for every space, resulting in that its cost is increased. SOLUTION: In view of the foregoing, the tank provides a heat accumulative tank in a low water level temperature laminated type heat accumulative tank in which a plurality of divided spaces are connected by communication segments, wherein diffusers 2u, 2d are arranged at an upper position and a lower position of a space 1b in the adjoining spaces 1a, 1b, 1c, 1d, 1e,..., and at the same time partition walls 3a, 3b,... in regard to the other space are provided with communicating segments 4u, 4d arranged at an upper position and a lower position in correspondence with the diffusers. The diffuser has a constitution in which a plurality of water spraying and sucking directions are attained to enable a communication part to be formed at the partition wall for the adjoining space in each of the directions.
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