| 摘要 |
PURPOSE:To prevent heat loss of a salt hydrate heat accumulation material and to sufficiently heat working fluid by covering circumference of a heat accumulator to store the salt hydrate heat accumulation material with a heat accumulation material for heat insulation of a melting latent heat tape and by restraining temperature lowering of the salt hydrate heat accumulated material by heat insulation effect of the heat accumulation material for heat insulation. CONSTITUTION:A heat accumulation device 20 is constituted of a heat accumulator 21 and a heater 22 of a contact pressure type. In the heat accumulator 21, a container 24 for a salt hydrate material is arranged on one part of the inside of a container 23 for working fluid, and inside of the container 24 for the salt hydrate material, a salt hydrate heat accumulation material 27 capable of reserving melting latent heat without being hardened even below the melting point is stored. In this case, a container 28 for a heat insulation material is arranged in circumference of the container 23 for the working fluid, and a heat insulation material storage part is formed between them. Inside of the heat insulation material storage part, a heat accumulation material 29 for heat insulation to reserve heat of the working fluid by melting latent heat and to discharge accumulated latent heat as temperature of the working fluid lowers down near to the melting point is stored. |
