HEAT SOURCE FOR COLD AND HOT WATER USING AQUEOUS SOLUTION OF BROMIDE PRODUCED BY COMBINATION WITH LIGHT METAL

PURPOSE:To introduce a single material concurrently as a heat storage material in a cooling- and-heating heat source system and as circulating water in a heating tower by employing an aqueous solution of a bromide produced by combination with a light metal as a heat storage material and as a circulating water for a heating tower. CONSTITUTION:In indoor cooling (A), by using a sprinkler pump 5 an aqueous bromide solution 6 is sprinkled over a heat exchanger constituting an ice-making unit 2; the aqueous bromide solution 6 is cooled by heat exchange with brine or refrigerant which has been cooled by a heat pump type refrigerating machine 1; then the aqueous bromide solution 6 is returned to a heat storage tank 4. By repeating the above-mentioned procedure sherbetlike ice is formed in the circulating aqueous solution or on ice-forming surfaces in the ice-making unit 2; the ice is allowed to flow down or removed from the ice-forming surfaces so as to store sherbetlike ice 7 in the heat storage tank 4. In indoor heating (B), by applying hot heat from the heat pump type refrigerating machine 1 the aqueous bromide solution 6 during storage of heat is heated directly or indirectly in the ice-making unit 2 which has now been switched in function to a condenser or a heat exchanger for heating. By using a circulating pump 9 the aqueous bromide solution 6 in the heat storage tank 4 may also be circulated through a heat exchanger 7 where waste heat from the building or atmospheric heat is absorbed for the heat storage.