Abstract: A process for recycling waste sulfuric acid by decomposing organic contaminants by use of light energy, comprising exposing a waste sulfuric acid containing contaminants to a focused radiation emission having an irradiation intensity within the range of from 0.01 to 100 MW/m.sup.2 in a reaction chamber shaped as a directly-absorbing receiver, wherein the chamber is maintained at a temperature within the range of from 200.degree. C. to 1000.degree. C. to form sulfur trioxide and water as sulfuric acid decomposition products. The process also includes forming sulfur dioxide and oxygen, starting materials for sulfuric acid, by cleavage of the decomposition product sulfur trioxide by maintaining the reaction chamber at a temperature between 400.degree. C. and 1500.degree. C. The process, particularly adapted for irradiations with direct solar radiation.

Abstract: In a process for adsorption cooling/conditioning of rooms, working media are used which comprise saturated aqueous solutions of calcium salts with an added organic polyhydroxy compound. The working media are distinguished by high salt contents and low salt precipitation temperatures at very low water vapor partial pressures and are suitable for use in continuously operated adsorption/desorption cycles of adsorption cooling/conditioning systems having high coefficients of performance.

Abstract: The present invention relates to a method of using and storing energy from the environment using a storage medium, especially silica gel or zeolite, which works by means of chemical reactions or sorptions, in which during charging with energy exergy is accumulated to a high density in this storage medium via an inert gaseous carrier medium for the exergy, and during discharging the stored exergy is extracted from the store, as required, also by means of an inert gaseous carrier medium for conversion into heat or cold of the desired level. The method of the present invention is carried out in such a way that:(a) on charging with energy the exergy of smaller imbalances of the environment is accumulated and/or(b) on discharging energy the residual exergy contained in the emerging gaseous inert carrier medium is used for charging a further storage medium, in which no or only a little exergy is accumulated.

Abstract: The temperature of a gaseous inert carrier medium is increased by taking useful heat from a heat storage medium functioning by water sorption. Such a heat storage medium may be a solid sorption material such as a zeolite and silica gel and more specially molecular sieve material or fine-pored silica gel. The residual heat of the carrier medium is used, after the useful heat has been given up, for increasing the temperature of water, which at a higher temperature, is used for completely or generally completely humidifying such carrier medium and increasing the temperature thereof before it is run into the storage medium. The method is specially to be used on taking or extracting useful heat from the storage medium in cold seasons and for example on frosty days.