A heat exchanger system is described for thermochemical storage and release. The system comprises a thermal exchange circuit with a heat exchanger fluid, the circuit further in thermal connection with a thermochemical module. The thermochemical module comprises a thermochemical material that stores and releases heat by a thermochemical exchange process under release or binding of a sorbate. The thermochemical module comprises a compartment structure that compartments the thermochemical material and further comprises a channel structure. This provides an exchange of the sorbate and the thermochemical material via the channel structure to the compartment structure.

A porous honeycomb heat storage structure including: a honeycomb structure which has a porous partition wall which defines a plurality of cells extending one end face to the other end face and allows a reaction medium to flow into the cells; and a heat storage portion which is configured by filling a heat storage material performing heat storage and heat dissipation by a reversible chemical reaction with the reaction medium or physical adsorption/desorption in at least a portion of each cells, wherein the heat storage portion has an area ratio in a range from 60% to 90% with respect to a cross sectional area of a honeycomb cross section orthogonal to an axial direction of the honeycomb structure.

A porous honeycomb heat storage structure including: a honeycomb structure which has a porous partition wall which defines a plurality of cells extending one end face to the other end face and allows a reaction medium to flow into the cells; and a heat storage portion which is configured by filling a heat storage material performing heat storage and heat dissipation by a reversible chemical reaction with the reaction medium or physical adsorption/desorption in at least a portion of each cells, wherein the heat storage portion has an area ratio in a range from 60% to 90% with respect to a cross sectional area of a honeycomb cross section orthogonal to an axial direction of the honeycomb structure.

Sodium-tin and sodium-tin-lead compositions have been identified and created that exhibit better reactivity characteristics (i.e., are less reactive) than sodium metal under the same conditions, making these compositions safer alternatives to sodium metal for use as a coolant. These compositions include compositions having at least 90% sodium (Na), from 0-10% lead (Pb) and the balance being tin (Sn).

Sodium-tin and sodium-tin-lead compositions have been identified and created that exhibit better reactivity characteristics (i.e., are less reactive) than sodium metal under the same conditions, making these compositions safer alternatives to sodium metal for use as a coolant. These compositions include compositions having at least 90% sodium (Na), from 0-10% lead (Pb) and the balance being tin (Sn).

An apparatus for heating a product includes a storage compartment for a product to be heated and a heater module physically and thermally coupled to the storage compartment. The heater module has a housing that defines a reaction chamber. A rigid barrier is inside the reaction chamber and defines first and second portions thereof. A first reactant is inside the reaction chamber, and a flexible bag (with a second reactant) is in the first portion of the first chemical reactant. The first and second reactants react exothermically upon contact. A piercing element can pierce the flexible bag. After piercing, the a fluid path and one or more fluid channels carry the second reactant to a section of the first portion of the reaction chamber away from where the flexible bag is located.

Provided are a chemical heat storage material having excellent cyclic durability and a method for producing the same. A chemical heat storage material includes: a surface layer formed of silica and/or calcium silicate; and calcium oxide particles with the surface layer.

Provided are a chemical heat storage material having excellent cyclic durability and a method for producing the same. A chemical heat storage material includes: a surface layer formed of silica and/or calcium silicate; and calcium oxide particles with the surface layer.

A heat storage system using a heat storage container includes a tubular body, a chemical heat storage material accommodated in the tubular body, and a flow channel that penetrates the tubular body in a longitudinal direction. The heat storage system includes a diffusion layer for transporting liquid from the flow channel to the chemical heat storage material. The liquid functions as a reaction medium of the chemical heat storage material. The liquid is transported to the flow channel and the diffusion layer. The liquid transported to the diffusion layer reacts with the chemical heat storage material, the chemical heat storage material generates heat, and the liquid is vaporized by the heat to become heat transport fluid.

A heat storage system using a heat storage container includes a tubular body, a chemical heat storage material accommodated in the tubular body, and a flow channel that penetrates the tubular body in a longitudinal direction. The heat storage system includes a diffusion layer for transporting liquid from the flow channel to the chemical heat storage material. The liquid functions as a reaction medium of the chemical heat storage material. The liquid is transported to the flow channel and the diffusion layer. The liquid transported to the diffusion layer reacts with the chemical heat storage material, the chemical heat storage material generates heat, and the liquid is vaporized by the heat to become heat transport fluid.