Adsorption heat exchanger devices (11, 25) are provided for use in solid sorption refrigeration systems (1) together with methods for making such devices and adsorbent structures therefor. The methods include applying a curable binder, in solution in a solvent, to granular adsorbent material, and then evaporating the solvent and curing the binder. The curable binder solution is sufficiently dilute that, during evaporation of the solvent, the binder becomes concentrated around contact points between granules (18) of the adsorbent material whereby localized bonds (19) are formed around the contact points on curing of the binder.

An adsorber structure for an adsorption heat exchanger may include directed transport structures for the transport of at least one of heat and adsorptive vapours. The transport structure may be substantially aligned with a gradient direction.

An adsorber structure for an adsorption heat exchanger may include directed transport structures for the transport of at least one of heat and adsorptive vapours. The transport structure may be substantially aligned with a gradient direction.

An integrated receiver drier and economizer (RDE) includes a tank having a hollow interior receiving a first flow of a refrigerant therein, the first flow of the refrigerant including a liquid phase of the refrigerant accumulating within a liquid containing portion of the hollow interior of the tank. An economizer receiving a second flow of the refrigerant through an interior thereof is at least partially submerged in the liquid containing portion of the tank. The economizer forms a heat exchanging structure configured to exchange heat between the first flow of the refrigerant passing over an exterior of the economizer and the second flow of the refrigerant passing through the interior of the economizer. A desiccant is disposed in the liquid containing portion of the tank downstream of the economizer with respect to the first flow of the refrigerant through the hollow interior of the tank.

A thermally driven condenser unit and an adsorption heat plant constructed therewith, which can be used as an adsorption heat pump, adsorption refrigeration plant, heat store and/or refrigeration storage mechanism. The thermally driven condenser unit integrates a thermal compressor and a condenser in a modular component.

A thermally driven condenser unit and an adsorption heat plant constructed therewith, which can be used as an adsorption heat pump, adsorption refrigeration plant, heat store and/or refrigeration storage mechanism. The thermally driven condenser unit integrates a thermal compressor and a condenser in a modular component.