Latent heat storage device
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTakahito Ishii, Kazuo Yamashita, Hiroshi Uno
Life of this patent
Estimating the term…
Abstract
Upon heat being liberated, a latent heat storage material is kept in indirect contact with a heat transfer medium through a heat liberation or output accelerating material. Thus, the heat of fusion of the storage material is taken out with high efficiency. Since a heat input accelerating material is taken into a solid phase of the storage material, the heat input velocity at which heat is transferred to the storage material is greatly increased when heat is transferred or stored thereinto. Thus, a practical latent heat storage device having excellent heat input and output characteristic has been materialized.
Claims22
A latent heat storage device comprising a closed vessel sealingly containing therein a latent heat storage material, a heat transfer medium substantially immiscibile with said latent heat storage material and changing from a liquid state to a gaseous state at the time of absorption of heat and from a gaseous state to a liquid state at the time of liberation of heat, and a heat output accelerating material having a density higher than at least the density of liquid phase of said latent heat storage material and being selectively wettable with said heat transfer medium more than with said latent heat storage material, and a space portion being left in the uppermost area of the interior of the closed vessel.
A latent heat storage device comprising a closed vessel sealingly containing a latent heat storage material, a heat transfer medium substantially imiscibile with said latent heat storage material and changing from a liquid state to a gaseous state at the time of absorption of heat and from a gaseous state to a liquid state at the time of liberation of heat, a fluorinated hydrocarbon material being used as said heat transfer medium and a heat output accelerating material having a density higher than at least the density of liquid phase of said latent heat storage material and being wettable selectably with said heat transfer medium more than with said latent heat storage material, and a space portion being left in the uppermost area of the interior of the closed vessel.
A latent heat storage device comprising a closed vessel containing therein a latent heat storage material, a heat transfer medium substantially immiscibile with said latent heat storage material and changing from a liquid state to a gaseous state at the time of absorption of heat and, from a gaseous state to a liquid state at the time of liberation of heat, a fluorinated hydrocarbon material being used as said heat transfer medium and a heat output accelerating material having a density higher than at least the density of liquid phase of said latent heat storage material and being wettable selectively with said heat transfer medium more than with said latent heat storage material, carbon powder is used as said heat output accelerating material, and a space portion being left in the uppermost area of the interior, of the closed vessel.
Dependencies are inferred from the claim text.