STORAGE AND RELEASE OF HEAT ENERGY FOR CITY HEATING USING ADSORPTION AND DESORPTION ON THERMOCHEMICAL STORAGE MEANS OF ZEOLITE TYPE

摘要

The invention relates to a method for storing and releasing heat energy for city heating, in which a primary heating unit (1001) supplies heat energy to a primary hot water circuit which exchanges heat in heat exchange means (1002) with a secondary hot water circuit, the method comprising the following steps: a normal phase, in which all of the heat energy supplied by the said primary heating unit (1001) is transmitted to the said primary water circuit, for exchange of heat with the said secondary circuit; a peak-demand phase with heat energy released by adsorption of an adsorption/desorption fluid (201) on thermal storage means (1003) comprising at least one microporous solid of zeolite or related type, the heat energy released by the adsorption making it possible to supply the additional heat energy required by the secondary circuit; a slack-demand phase in which heat energy is stored by desorption of the said adsorption/desorption fluid (202) from the said storage means (1003), in which some of the power of the primary heating unit (1001) which is not demanded by the secondary circuit is used to supply the heat energy needed for the desorption of the adsorption/desorption fluid adsorbed onto the thermal storage means (1003) during the peak-demand phase. The invention also relates to an integrated city heating system comprising thermal storage means comprising at least one microporous solid of zeolite or related type.