Heating installation

Abstract

A heating installation (1) comprising:a first circuit (C1) containing a medium;a first heat pump (5) for heating a medium by absorbing heat energy from the medium in the first circuit;a thermal energy store (2) connected to the first circuit in order to allow heat exchange between the thermal energy store and the medium in the first circuit;a second circuit (C2) containing a medium;a second heat pump (10) for heating a medium by absorbing heat energy from the medium in the second circuit;a cooling circuit (CC) containing a medium;a first heat exchanger (8) for transferring heat from the medium in the cooling circuit (CC) to the medium in the first circuit (C1); anda second heat exchanger (9) for transferring heat from the medium in the cooling circuit (CC) to the medium in the second circuit (C2).

1 . A heating installation comprising:
 a first circuit (C 1 ) containing a medium;   a first heat pump ( 5 ), which has an input side ( 5   a ) connected to the first circuit (C 1 ) and which is configured to heat a medium by absorbing heat energy from the medium in the first circuit (C 1 );   a thermal energy store ( 2 ) connected to the first circuit (C 1 ) to allow heat exchange between the thermal energy store ( 2 ) and the medium in the first circuit (C 1 );   a second circuit (C 2 ) containing a medium; and   a cooling circuit (CC) containing a medium, wherein   
       the heating installation ( 1 ) further comprises:
 a second heat pump ( 10 ), which has an input side connected to the second circuit (C 2 ) and is configured to heat a medium by absorbing heat energy from the medium in the second circuit (C 2 ); 
 a first heat exchanger ( 8 ), which has a first side ( 8   a ) connected to the cooling circuit (CC) and a second side ( 8   b ) connected to the first circuit (C 1 ) and is configured to transfer heat from the medium in the cooling circuit (CC) to the medium in the first circuit (C 1 ); and 
 a second heat exchanger ( 9 ), which has a first side ( 9   a ) connected to the cooling circuit (CC) and a second side ( 9   b ) connected to the second circuit (C 2 ) and is configured to transfer heat from the medium in the cooling circuit (CC) to the medium in the second circuit (C 2 ). 
 
     
     
         2 . A heating installation according to  claim 1 , wherein the first and second heat exchangers ( 8 ,  9 ) are connected to the cooling circuit (CC) in series with each other. 
     
     
         3 . A heating installation according to  claim 2 , wherein the first heat exchanger ( 8 ) is arranged in the cooling circuit (CC) downstream of the second heat exchanger ( 9 ). 
     
     
         4 . A heating installation according to  claim 1 , wherein the heating installation ( 1 ) comprises a first circulation pump ( 6 ) arranged in the first circuit (C 1 ) for controlling the flow of medium in the first circuit (C 1 ) between the first heat pump ( 5 ) and the thermal energy store ( 2 ). 
     
     
         5 . A heating installation according to  claim 4 , wherein the heating installation ( 1 ) comprises a second circulation pump ( 12 ) or a control valve ( 15 ) arranged in the first circuit (C 1 ) for controlling the flow of medium in the first circuit (C 1 ) between the first heat exchanger ( 8 ) and the thermal energy store ( 2 ). 
     
     
         6 . A heating installation according to  claim 1 , wherein the heating installation ( 1 ) comprises:
 a first accumulator tank ( 30 ) arranged in the second circuit (C 2 ) for accumulating a part of the medium in the second circuit,   the first accumulator tank ( 30 ) is connected to an evaporator ( 10   c ) of the second heat pump ( 10 ) to allow medium in the second circuit (C 2 ) to circulate between the first accumulator tank ( 30 ) and the evaporator ( 10   c ) of the second heat pump;   a third circulation pump ( 11 ), arranged in the second circuit (C 2 ) for controlling the flow of medium in the second circuit through the second side ( 9   b ) of the second heat exchanger ( 9 ) and through the first accumulator tank ( 30 ); and   a fourth circulation pump ( 31 ), is arranged in a conduit between the first accumulator tank ( 30 ) and the evaporator ( 10   c ) of the second heat pump ( 10 ) and configured to control the circulation of medium between the first accumulator tank ( 30 ) and the evaporator ( 10   c ) of the second heat pump ( 10 ).   
     
     
         7 . A heating installation according to  claim 1 , wherein:
 the heating installation ( 1 ) comprises a third circuit (C 3 ) containing a medium;   that the first heat pump ( 5 ) has its output side ( 5   b ) connected to the third circuit (C 3 ) so that heat exchange between the working medium of the first heat pump ( 5 ) and the medium in the third circuit (C 3 ) is possible via a condenser ( 5   d ) of the first heat pump ( 5 ); and   the heating installation ( 1 ) comprises one or more heat emitting devices ( 16 ) arranged in the third circuit (C 3 ) in order to transfer heat from the medium in the third circuit (C 3 ) to air within a building.   
     
     
         8 . A heating installation according to  claim 7 , wherein the second heat pump ( 10 ) has its output side ( 10   b ) connected to the third circuit (C 3 ) so that heat exchange between the working medium of the second heat pump ( 10 ) and the medium in the third circuit (C 3 ) is possible via a condenser ( 10   d ) of the second heat pump ( 10 ). 
     
     
         9 . A heating installation according to  claim 1 , wherein
 the heating installation ( 1 ) comprises a fourth circuit (C 4 ) containing a medium;
 the second heat pump ( 10 ) has its output side connected to the fourth circuit (C 4 ) so that heat exchange between the working medium of the second heat pump ( 10 ) and the medium in the fourth circuit (C 4 ) is possible via a condenser ( 10   d ) of the second heat pump ( 10 ); and 
 the heating installation ( 1 ) comprises a heat emitting device ( 20 ,  20 ′) arranged in the fourth circuit (C 4 ) for heating tap hot-water by transferring heat from the medium in the fourth circuit (C 4 ) to water is to be heated in order to provide tap hot-water. 
   
     
     
         10 . A heating installation according to  claim 9 , wherein the heating installation ( 1 ) comprises a third heat exchanger ( 33 ), which has a first side ( 33   a ) connected to the second circuit (C 2 ) and a second side ( 33   b ) connected to a water supply line ( 26 ) and is configured to preheat tap hot-water by transferring heat from the medium in the second circuit (C 2 ) to water in the water supply line ( 26 ). 
     
     
         11 . A heating installation according to  claim 6 , wherein
 the heating installation ( 1 ) comprises a third heat exchanger ( 33 ), which has a first side ( 33   a ) connected to the second circuit (C 2 ) and a second side ( 33   b  connected to a water supply line ( 26 ) and is configured to preheat tap hot-water by transferring heat from the medium in the second circuit (C 2 ) to water in the water supply line ( 26 );   the heating installation ( 1 ) comprises a second accumulator tank ( 34 ) arranged in the second circuit (C 2 ) for accumulating a part of the medium in the second circuit,
 the first and second accumulator tanks ( 30 ,  34 ) are arranged in series with each other in the second circuit (C 2 ); 
   the third heat exchanger ( 33 ) has its first side ( 33   a ) connected to the second accumulator tank ( 34 ) to allow medium in the second circuit (C 2 ) to circulate between the second accumulator tank ( 34 ) and the third heat exchanger ( 33 ); and   the heating installation ( 1 ) comprises a fifth circulation pump ( 35 ), which is arranged in a conduit between the second accumulator tank ( 34 ) and the third heat exchanger ( 33 ) and configured to control the circulation of medium between the second accumulator tank ( 34 ) and the third heat exchanger ( 33 ).   
     
     
         12 . A heating installation according to  claim 11 , wherein the second accumulator tank ( 34 ) is arranged in the second circuit (C 2 ) upstream of the first accumulator tank ( 30 ) as seen in a flow direction (FD) from an outlet ( 9   c ) of the second heat exchanger ( 9 ) to an inlet ( 9   d ) thereof. 
     
     
         13 . A heating installation according to  claim 11 , wherein the second accumulator tank ( 34 ) is connected to the third circuit (C 3 ) to allow medium to circulate between the second accumulator tank ( 34 ) and the third circuit (C 3 ). 
     
     
         14 . A heating installation according to  claim 11 , wherein
 the heating installation ( 1 ) comprises a third accumulator tank ( 40 ) arranged in the second circuit (C 2 ) for accumulating a part of the medium in the second circuit,   the first, second and third accumulator tanks ( 30 ,  34 ,  40 ) are arranged in series with each other in the second circuit (C 2 ),
 the third accumulator tank ( 40 ) is arranged in the second circuit (C 2 ) downstream of the first accumulator tank ( 30 ) as seen in said flow direction (FD); 
   the heating installation ( 1 ) comprises a fourth heat exchanger ( 41 ), which has a first side ( 41   a ) connected to the third accumulator tank ( 40 ) to allow medium in the second circuit (C 2 ) to circulate between the third accumulator tank ( 40 ) and the fourth heat exchanger ( 41 ) and a second side ( 41   b ) connected to said water supply line ( 26 ),
 the fourth heat exchanger ( 41 ) is configured to preheat tap hot-water by transferring heat from the medium in the second circuit (C 2 ) to the water in the water supply line ( 26 ); 
   that the heating installation ( 1 ) comprises a sixth circulation pump ( 42 ), which is arranged in a conduit between the third accumulator tank ( 40 ) and the fourth heat exchanger ( 41 ) and configured to control the circulation of medium between the third accumulator tank ( 40 ) and the fourth heat exchanger ( 41 );   that the third and fourth heat exchangers ( 33 ,  41 ) are arranged in series with each other in said water supply line ( 26 ), and
 the fourth heat exchanger ( 41 ) is connected to the water supply line ( 26 ) upstream of the third heat exchanger ( 33 ) to thereby allow the fourth heat exchanger ( 41 ) to preheat the tap hot-water in a first step and the third heat exchanger ( 33 ) to preheat the tap hot-water in a subsequent second step. 
   
     
     
         15 . A heating installation according to  claim 1 , wherein the thermal energy store ( 2 ) is a ground heat exchanger. 
     
     
         16 . A heating installation according to  claim 3 , wherein the heating installation ( 1 ) comprises a first circulation pump ( 6 ) arranged in the first circuit (C 1 ) for controlling the flow of medium in the first circuit (C 1 ) between the first heat pump ( 5 ) and the thermal energy store ( 2 ). 
     
     
         17 . A heating installation according to  claim 2 , wherein the heating installation ( 1 ) comprises a first circulation pump ( 6 ) arranged in the first circuit (C 1 ) for controlling the flow of medium in the first circuit (C 1 ) between the first heat pump ( 5 ) and the thermal energy store ( 2 ). 
     
     
         18 . A heating installation according to  claim 17 , wherein the heating installation ( 1 ) comprises a second circulation pump ( 12 ) or a control valve ( 15 ) arranged in the first circuit (C 1 ) for controlling the flow of medium in the first circuit (C 1 ) between the first heat exchanger ( 8 ) and the thermal energy store ( 2 ). 
     
     
         19 . A heating installation according to  claim 16 , wherein the heating installation ( 1 ) comprises a second circulation pump ( 12 ) or a control valve ( 15 ) arranged in the first circuit (C 1 ) for controlling the flow of medium in the first circuit (C 1 ) between the first heat exchanger ( 8 ) and the thermal energy store ( 2 ). 
     
     
         20 . A heating installation according to  claim 19 , wherein the heating installation ( 1 ) comprises:
 a first accumulator tank ( 30 ) arranged in the second circuit (C 2 ) for accumulating a part of the medium in the second circuit,   the first accumulator tank ( 30 ) is connected to an evaporator ( 10   c ) of the second heat pump ( 10 ) to allow medium in the second circuit (C 2 ) to circulate between the first accumulator tank ( 30 ) and the evaporator ( 10   c ) of the second heat pump;   a third circulation pump ( 11 ), arranged in the second circuit (C 2 ) for controlling the flow of medium in the second circuit through the second side ( 9   b ) of the second heat exchanger ( 9 ) and through the first accumulator tank ( 30 ); and
 a fourth circulation pump ( 31 ), arranged in a conduit between the first accumulator tank ( 30 ) and the evaporator ( 10   c ) of the second heat pump ( 10 ) and configured to control the circulation of medium between the first accumulator tank ( 30 ) and the evaporator ( 10   c ) of the second heat pump ( 10 ).