System for air-conditioning and hot water supplying

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New Patents

An apparatus (14) embodying heat exchange means for treating solid, granular and aggregate materials, and in particular for treating spent, i.e., used, chemically bonded foundry sand. The subject apparatus (14) includes a rotatable first chamber means (16) in which the used foundry sand is preheated while traveling in a first direction therethrough from one end thereof to the other end thereof. From the first chamber means (16) the preheated used foundry sand is suitably conveyed to a thermal reclaimer means (12) for purposes of thermally removing organic matter therefrom. Thereafter, the used foundry sand is conveyed to a second chamber means (44) wherein the used foundry sand undergoes post reclamation whereby any organic matter that may yet remain in the foundry sand is thermally removed therefrom. From the second chamber means (44) the used foundry is made to pass into a third chamber means (52) which is located in surrounding heat exchange relation to the first chamber means (16). As the used foundry sand flows through the third chamber means (52) in a second direction heat is exchanged between the foundry sand traveling through the third chamber means (52) and the foundry sand traveling through the first chamber means (16) such that the former loses heat, i.e., is being cooled and the latter absorbs heat, i.e., is being preheated.

4507938 SYSTEM FOR AIRCONDITIONING AND HOT WATER SUPPLYING

heat-exchanger with a coolant of excellent low temperature characteristic being filled in both of them; a refrigerating device at the secondary side having a user side condenser for heating water for hot water supply and a heat source side evaporator with a coolant of excellent high temperature characteristic being filled in both of them; fan coil units for air-conditioning communicatively connected with the user side heatexchanger of the heat pump type refrigerating device at the primary side and the heat source side evaporator of the refrigerating device at the secondary side; and a circuit for airconditioning, through which cold or warm water is caused to circulate between the user side heat exchanger and the heat source side evaporator, the cold water or warm water after the airconditioning operation by the fan coil units being circulated in the heat source side evaporator of the refrigerating device at the secondary side and the user side heat exchanger of the heat pump type refrigerating device at the primary side.

4508041 PROCESS FOR THE COMBUSTION OF COKE PRESENT ON SOLID PARTICLES AND FOR THE PRODUCTION OF RECOVERABLE HEAT FROM HYDROCARBON-BEARING SOLID PARTICLES AND APPARATUS THEREFOR Heinz Voetter, Richard Darton, Hubrecht C A Van Meurs, Rajamani Krishna, The Hague, Netherlands assigned to Shell Internationale Research Maatschappij B V 11

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An air-conditioning and hot water supply system, which comprises a heat pump type refrigerating device at the primary side having a user side beat-exchanger and a heat source side

Process and apparatus for the combustion of coke present on solid particles from which hydrocarbons have been substantially removed by heating, and for the production of recoverable heat from hydrocarbon-bearing solid particles, in a series of at least two combustion stages. The process comprises the followng steps: (a) feeding the solid particles into the first combustion stage of the series through an inlet near its bottom; (b) introducing an oxygencontaining gas into the bottom of each combustion stage, whereby at least part of the particles