Geothermal facility with thermal recharging of the subsoil

Abstract

Disclosed is a facility for transferring thermal energy of geothermal origin, for example to contribute to the heating of premises, this facility having the feature of including a heat exchanger placed in a water pipe ( 31 ). The principle of the facility is to extract the heat contained in the soil ( 1 ) in order to transfer it towards the required place (premises, offices, industrial processes, various equipment, etc.) and to recharge the soil ( 1 ) with heat extracted from a liquid used in public service, namely wastewater or drinking water, and/or used in industry.

1 . Heat energy transfer facility comprising:
 at least one first heat exchanger ( 4 ) arranged near a geothermal energy source ( 1 ),   at least one second heat exchanger ( 30 ) arranged near a renewable heat energy source comprising a water system connection,   a heat pump ( 8 ),   a coolant circuit ( 40 ) connecting the evaporator ( 7 ) of the heat pump to the first and second heat exchanger.   
     
     
         2 . Heat energy transfer facility according to  claim 1 , wherein the water system connection is a wastewater system connection ( 31 ). 
     
     
         3 . Heat energy transfer facility according to  claim 1 , wherein the water system connection is a water conveyance system connection. 
     
     
         4 . Heat energy transfer facility according to  claim 1 , wherein the water system connection is an industrial water line. 
     
     
         5 . Heat energy transfer facility according to  claim 1 , wherein the water system connection originates from a refrigeration system of an industrial process necessitating a refrigeration circuit. 
     
     
         6 . Heat energy transfer facility according to  claim 1 , wherein it comprises a first mode of operation in which the coolant circuit ( 40 ) is a closed-loop circuit arranged such that the coolant circulates in the evaporator ( 7 ) of the heat pump ( 8 ), then in the at least one second heat exchanger ( 30 ), and then in the at least one first heat exchanger ( 4 ). 
     
     
         7 . Heat energy transfer facility according to  claim 1 , wherein it comprises a second mode of operation in which the coolant circuit ( 40 ) is a closed-loop circuit arranged such that the coolant circulates in the at least one heat exchanger ( 4 ), then in the at least one second heat exchanger ( 30 ). 
     
     
         8 . Heat energy transfer facility according to  claim 2 , wherein the heat energy transfer facility is constructed and arranged to operate in a first mode of operation in which the coolant circuit is a closed-loop circuit arranged such that the coolant circulates in the evaporator of the heat pump, then in the at least one second heat exchanger, and then in the at least one first heat exchanger. 
     
     
         9 . Heat energy transfer facility according to  claim 3 , wherein the heat energy transfer facility is constructed and arranged to operate in a first mode of operation in which the coolant circuit is a closed-loop circuit arranged such that the coolant circulates in the evaporator of the heat pump, then in the at least one second heat exchanger, and then in the at least one first heat exchanger. 
     
     
         10 . Heat energy transfer facility according to  claim 4 , wherein the heat energy transfer facility is constructed and arranged to operate in a first mode of operation in which the coolant circuit is a closed-loop circuit arranged such that the coolant circulates in the evaporator of the heat pump, then in the at least one second heat exchanger, and then in the at least one first heat exchanger. 
     
     
         11 . Heat energy transfer facility according to  claim 5 , wherein the heat energy transfer facility is constructed and arranged to operate in a first mode of operation in which the coolant circuit is a closed-loop circuit arranged such that the coolant circulates in the evaporator of the heat pump, then in the at least one second heat exchanger, and then in the at least one first heat exchanger. 
     
     
         12 . Heat energy transfer facility according to  claim 2 , wherein the heat energy transfer facility is constructed and arranged to operate in a second mode of operation in which the coolant circuit is a closed-loop circuit arranged such that the coolant circulates in the at least one heat exchanger, then in the at least one second heat exchanger. 
     
     
         13 . Heat energy transfer facility according to  claim 3 , wherein the heat energy transfer facility is constructed and arranged to operate in a second mode of operation in which the coolant circuit is a closed-loop circuit arranged such that the coolant circulates in the at least one heat exchanger, then in the at least one second heat exchanger. 
     
     
         14 . Heat energy transfer facility according to  claim 4 , wherein the heat energy transfer facility is constructed and arranged to operate in a second mode of operation in which the coolant circuit is a closed-loop circuit arranged such that the coolant circulates in the at least one heat exchanger, then in the at least one second heat exchanger. 
     
     
         15 . Heat energy transfer facility according to  claim 5 , wherein the heat energy transfer facility is constructed and arranged to operate in a second mode of operation in which the coolant circuit is a closed-loop circuit arranged such that the coolant circulates in the at least one heat exchanger, then in the at least one second heat exchanger.