Abstract: The invention is directed to a salt composition for use in a thermochemical energy storage device, said salt composition comprising a base and a hygroscopic salt that can produce a gas by reacting with an acid. In further aspects the invention is directed to ab energy storage compartment and a thermochemical energy storage device comprising the salt composition.

Abstract: The present invention discloses a heat exchanger system 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 method for the preparation of the compartment structure is also described. In this method, the thermochemical material is brought in a liquid phase and inserted in the compartment structure, while keeping the channel structure free from the liquid phase; and subsequently dried.

Abstract: The invention is directed to a system for energy storage comprising a chemical combustion reactor comprising a reactor segment that comprises at least two porous active fixed beds that are separated by an inactive insulating layer which are at least partially surrounded by an insulating mantle. The active beds comprise a metal and/or oxide thereof.

Abstract: The invention is directed to energy storage and supply system (100) comprising a combination of a heat pump (HP) (2) and a thermochemical storage (TCS) (1) unit, adapted for storing and supplying energy. In a further aspect, the invention is directed to a method for operating the energy storage and supply system (100), wherein said method comprises charging and discharging phases which both comprise providing a HP warm stream by the HP and leading said HP warm stream to the TCS unit to respectively thermally charge and discharge said TCS unit.

Abstract: The invention relates to a sensible heat storage apparatus that comprises a core material that can be heated to a high temperature while it has been placed in a heat transfer fluid that absorbs essentially all the heat that is lost by any heat leakages from the core material. Accordingly, there is a very low, or almost absent overall heat loss, even though the sensible heat storage apparatus can store heat at a very high temperature. The gist of the invention is further that the high amount of heat can gradually be transferred to the HTF, which heat can in turn be put to use for domestic applications (e.g. domestic hot water and/or space heating) or for steam generation.

Abstract: The invention is directed to a process for the purification of a raw hydrogen gas stream comprising hydrogen gas in an amount of 85-99%, said process comprising the step of contacting said raw hydrogen gas stream with an oxidized bed comprising an oxidized metal resulting in a waste gas stream comprising water and less than 5% hydrogen gas, and in a reduction of said oxidized metal; and a step of contacting a bed comprising a reduced metal with water to produce a purified hydrogen gas stream comprising more than 99% hydrogen gas, preferably comprising 99.97% or more hydrogen gas, and the oxidized metal. In a further aspect, the invention is directed to an apparatus suitable to carry out said process.

Abstract: The invention describes a composite material for heat storage comprising a thermochemical material (TCM) encapsulated in a water vapour permeable polymeric material. The thermochemical material preferably comprises at least one salt, at least one salt hydrate or a mixture of these, wherein the salt is preferably capable of binding water in an exothermic reaction, such as calcium chloride. Encapsulation in a water vapour permeable polymeric material results in an improved stability, cyclability of the thermochemical material, a reduced regeneration temperature and reduced corrosion of the environment. The composite according to the invention is particularly suitable for energy storage, preferably in the field of building and construction, and more preferably in the seasonal storage of solar energy.

Abstract: The invention is directed to a method for decreasing the desorption enthalpy of a discharged high enthalpy sorption material that comprises a sorbed sorbate and that is at least partially discharged, wherein said method comprises a step 1) of reacting said discharged high enthalpy sorption material in a redox reaction to provide a discharged low enthalpy sorption material. In another aspect, the invention is directed to using this principle in methods for generating electrical energy from heat and vise versa. In addition, the invention is directed to a thermochemical energy storage device comprising a sorption material having at least two desorption enthalpy states, which preferably correlate to at least two oxidation states of which one oxidation state correlates to a higher desorption enthalpy than one or more of the other oxidation states.

Abstract: 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.

Abstract: The present invention discloses a heat exchanger system 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 method for the preparation of the compartment structure is also described. In this method, the thermochemical material is brought in a liquid phase and inserted in the compartment structure, while keeping the channel structure free from the liquid phase; and subsequently dried.

Abstract: The invention is directed to a system for energy storage including a heat transfer fluid (HTF) tank containing a HTF such as water; a chemical combustion reactor that is at least partially filled with a metal and/or an oxide thereof, and that includes a gas inlet and a gas outlet; wherein the chemical combustion reactor is at least partially submerged in the HTF within the HTF tank.

Abstract: The invention is directed to a salt composition for use in a thermochemical energy storage device, said salt composition comprising a base and a hygroscopic salt that can produce a gas by reacting with an acid. In further aspects the invention is directed to ab energy storage compartment and a thermochemical energy storage device comprising the salt composition.

Abstract: 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.

Abstract: The invention describes a composite material for heat storage comprising a thermochemical material (TCM) encapsulated in a water vapour permeable polymeric material. The thermochemical material preferably comprises at least one salt, at least one salt hydrate or a mixture of these, wherein the salt is preferably capable of binding water in an exothermic reaction, such as calcium chloride. Encapsulation in a water vapour permeable polymeric material results in an improved stability, cyclability of the thermochemical material, a reduced regeneration temperature and reduced corrosion of the environment. The composite according to the invention is particularly suitable for energy storage, preferably in the field of building and construction, and more preferably in the seasonal storage of solar energy.

Abstract: The present invention discloses a closed system for thermochemical storage comprising at least one water condenser and at least two thermochemical modules, wherein a first thermochemical module comprises a first thermochemical material and a second thermochemical module comprises a second thermochemical material, and wherein the at least one water condenser and the thermochemical modules are connected so that water vapor can be exchanged individually between any two selected from the list consisting of the at least one water condenser and the at least two thermochemical modules. A method for desorption in the system according to the invention is also described. In this method, the first thermochemical module is used as a condenser to dry the second thermochemical module.

Abstract: The invention describes a composite material for heat storage comprising a thermochemical material (TCM) encapsulated in a water vapor permeable polymeric material. The thermochemical material preferably comprises at least one salt, at least one salt hydrate or a mixture of these, wherein the salt is preferably capable of binding water in an exothermic reaction, such as calcium chloride. Encapsulation in a water vapor permeable polymeric material results in an improved stability, cyclability of the thermochemical material, a reduced regeneration temperature and reduced corrosion of the environment. The composite according to the invention is particularly suitable for energy storage, preferably in the field of building and construction, and more preferably in the seasonal storage of solar energy.

Abstract: The present invention discloses a closed system for thermochemical storage comprising at least one water condenser and at least two thermochemical modules, wherein a first thermochemical module comprises a first thermochemical material and a second thermochemical module comprises a second thermochemical material, and wherein the at least one water condenser and the thermochemical modules are connected so that water vapour can be exchanged individually between any two selected from the list consisting of the at least one water condenser and the at least two thermochemical modules. A method for desorption in the system according to the invention is also described. In this method, the first thermochemical module is used as a condenser to dry the second thermochemical module.

Abstract: The invention describes a composite material for heat storage comprising a thermochemical material (TCM) encapsulated in a water vapour permeable polymeric material. The thermochemical material preferably comprises at least one salt, at least one salt hydrate or a mixture of these, wherein the salt is preferably capable of binding water in an exothermic reaction, such as calcium chloride. Encapsulation in a water vapour permeable polymeric material results in an improved stability, cyclability of the thermochemical material, a reduced regeneration temperature and reduced corrosion of the environment. The composite according to the invention is particularly suitable for energy storage, preferably in the field of building and construction, and more preferably in the seasonal storage of solar energy.