ACCUMULATOR AND HEAT ACCUMULATION CONTROL METHOD

• Main Authors: HIJIKATA YOSHIMASA, NISHIO TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 02.02.2015
• Subjects: ADHESIVES; BLASTING; CHEMISTRY; DYES; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MECHANICAL ENGINEERING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; WEAPONS

PROBLEM TO BE SOLVED: To make controllable the timing of starting coagulating an aqueous solution in a supercooled state.SOLUTION: An accumulator 1 includes: an accumulation unit 3; and a control unit 4. The accumulation unit 3 includes: a vessel 31; and an aqueous solution 32 stored in the vessel 31 and containing cold storage main agent. The control unit 4 includes a water mass addition unit 43 that supplies a water mass acting as a liquid-phase additive, to the aqueous solution 32. The control unit 4 also includes an ultrasonic supply unit 44 that supplies an ultrasonic wave acting as an external stimulus to the aqueous solution 32. The water mass addition unit 43 and the ultrasonic supply unit 44 provide a phase change generator 41. The phase change generator 41 supplies the water mass to the aqueous solution 32 and irradiates the aqueous solution 32 with the ultrasonic wave in a state in which the aqueous solution 32 is supercooled. As a result, a phase change from water to ice occurs in the aqueous solution 32. Growth of hydrate 34 deriving from the phase change starts in the aqueous solution 32. The hydrate 34 grows while an ice nucleus 33 generated by the phase change acts as a nucleus. As a consequence, the supercooled state of the aqueous solution 32 is cancelled to start heat storage. 【課題】過冷却状態にある水溶液の凝固開始の時期を制御可能とする。【解決手段】蓄冷装置１は、蓄熱器３と、制御部４とを有する。蓄熱器３は、容器３１と、容器３１内に収容された蓄冷主剤を含む水溶液３２とを有する。制御部４は、水溶液３２に液相の添加物としての水塊を供給する水塊添加部４３を有する。さらに、制御部４は、水溶液３２に外部刺激としての超音波を供給する超音波供給部４４を有する。これらは相変化発生部４１を提供する。相変化発生部４１は、水溶液３２が過冷却された状態において、水塊を供給し、超音波を照射する。この結果、水溶液３２の中において、水から氷への相変化が発生する。水溶液３２の中には、相変化に起因して水和物３４が成長を開始する。水和物３４は、相変化により発生した氷核３３を核として成長する。これにより、水溶液３２の過冷却が解除され、蓄熱が開始される。【選択図】図１