Arrangement, particularly refrigerating machine or heat pump

Abstract

An arrangement may comprise a first and a second heat tank, a thermochemical reactor which is thermally and fluidically connected to the heat tank, a heat transfer fluid circuit containing a heat transfer fluid for transporting heat between the two heat tanks and the thermochemical reactor, a temporary heat store arranged in the heat transfer fluid circuit for temporarily storing the heat transfer fluid. The temporary heat store may be for receiving the heat transfer fluid has two different temperature levels. The temporary heat store may comprise a first partial store with a variable storage volume and a second partial store with a variable storage volume. The variable storage volume may be thermally and fluidically separate from the first. A valve system may be located in the heat transfer fluid circuit. The heat transfer fluid circuit may comprise at least one movable valve device, by which the heat transport between the two heat tanks, the thermochemical reactor and the temporary heat store can be controlled by the heat transfer fluid.

1 . A system for an arrangement of a refrigerating machine or heat pump, comprising:
 a first heat tank functioning as heat source and with a second heat tank functioning as heat sink;   a thermochemical reactor including an adsorption refrigerating machine or an adsorption heat pump, which is connectible or connected thermally and fluidically to the heat tanks;   a heat transfer fluid circuit in which a heat transfer fluid is arranged for transporting heat between the two heat tanks and the thermochemical reactor;   a temporary heat store arranged in the heat transfer fluid circuit for temporarily storing the heat transfer fluid, wherein the temporary heat store is designed to receive the heat transfer fluid with two different temperature levels and for this purpose has a first partial store with variable storage volume and a second partial store with variable storage volume which is thermally and fluidically separated therefrom;   a transport device located in the heat transfer fluid circuit for propelling the heat transfer fluid (F) in the heat transfer fluid circuit;   a valve system ( 9 ) comprising at least one displaceable valve device including two displaceable valve devices provided in the heat transfer fluid circuit, wherein the transport of heat between the two heat tanks, the thermochemical reactor and the temporary heat store can be controlled via the heat transfer fluid; and   a control/regulating device for controlling the valve system.   
     
     
         2 . The system according to  claim 1 , wherein the temporary heat store is designed to receive and discharge a first and a second fluid mass of the heat transfer fluid simultaneously, wherein the two fluid masses have different temperature levels. 
     
     
         3 . The system according to  claim 1 , wherein the first partial store of the temporary heat store is connected fluidically to the first heat tank and the second partial store of the temporary heat store is connected fluidically to the second heat tank. 
     
     
         4 . The system according to  claim 1 , wherein the volume-variable first partial store is designed to complement the volume-variable second partial store, so that the total volume formed by the two partial stores is constant. 
     
     
         5 . The system according to  claim 1 ,
 wherein the temporary heat store is embodied as a receptacle wherein the receptacle comprises:   a housing with an interior space of which a dividing element is arranged so as to be movable and which divides the interior space into a volume-variable first partial store and a second partial store which is also volume-variable and is insulated thermally from the first partial store,   a first aperture in the housing for introducing a heat transfer fluid with a first temperature level into the first partial store and discharging the heat transfer fluid therefrom, and   a second aperture in the housing for introducing a heat transfer fluid with a first temperature level into the second partial store and discharging it the heat transfer fluid therefrom,   wherein the volume-variable first partial store is designed to complement the volume-variable second partial store, so that the total volume formed by the two partial stores is constant.   
     
     
         6 . The system according to  claim 5 , wherein the housing is of an elongated construction, wherein the first aperture is located at a first longitudinal end and the second aperture is located at a second longitudinal end opposite the first longitudinal end. 
     
     
         7 . The system according to  claim 5 ,
 wherein the housing is constructed as a tubular body which extends substantially linearly in an axial direction wherein the dividing element lies against a circumferential wall of the tubular body and is movable in the axial direction along the inner side thereof to form the two volume-variable partial stores.   
     
     
         8 . The system according to any one of  claim 5 , wherein at least one of:
 a first sensor element s provided at the first aperture, and by means of which it can be determined whether the dividing element is in a first end position in which the dividing element is at a minimum distance from the first aperture, and, and   a second sensor element is provided at the second aperture, by which it can be determined whether the dividing element is in a second end position in which the dividing element is at a minimum distance from the second aperture.   
     
     
         9 . The system according to  claim 1 , wherein an operating state can be set by the control/regulating device in the at least one displaceable valve device of the valve system, in which state the heat transfer fluid circuit forms a first partial circuit, in which the heat transfer fluid circulates between the thermochemical reactor and the second heat tank so that heat is transferred from the thermochemical reactor into the second heat tank. 
     
     
         10 . The system according to  claim 9 , wherein in this operating state the first partial store has a maximum volume and the second partial store has a minimum volume. 
     
     
         11 . The system according to  claim 1 ,
 wherein an operating state can be set by the control/regulating device in the at least one displaceable valve device of the valve system, in which state the heat transfer fluid circuit forms a second partial circuit, in which the heat transfer fluid circulates between the thermochemical reactor and the first heat tank so that heat is transferred from the first heat tank into the thermochemical reactor.   
     
     
         12 . The system according to  claim 11 , wherein in this operating state the second partial store has a maximum volume and the first second partial store has a minimum volume. 
     
     
         13 . The system according to  claim 1 ,
 wherein an operating state can be set by the control/regulating device in the at least one displaceable valve device of the valve system, wherein:   heat transfer fluid is transported from the first partial store into the first heat tank,   heat transfer fluid is transported from the first heat tank into the thermochemical reactor, and   heat transfer fluid is transported from the thermochemical reactor into the second partial store.   
     
     
         14 . The system according to  claim 1 , wherein an operating state can be set by the control/regulating device in the at least one displaceable valve device of the valve system, in wherein:
 heat transfer fluid is transported from the second partial store into the second heat tank,   heat transfer fluid is transported from the second heat tank into the thermochemical reactor, and   heat transfer fluid is transported from the thermochemical reactor into the first partial store.   
     
     
         15 . The system  claim 1 , wherein the first and the second heat tanks and the thermochemical reactor are each equipped with a fluid inlet and a fluid outlet to enable the heat transfer fluid to be introduced therein and discharged therefrom, wherein:
 the fluid inlet of the thermochemical reactor can be connected selectively to the fluid outlet of the first or second heat tank by the first displaceable valve device, and   the fluid outlet of the thermochemical reactor can be connected selectively to the fluid inlet of the first or second heat tank by the second displaceable valve device.   
     
     
         16 . The system according to  claim 1 ,
 wherein the temporary heat store is connected fluidically in parallel with the second valve device, so that the fluid inlet of the first heat tank communicates fluidically with the first partial store and der fluid inlet of the second heat tank communicates fluidically with the second partial store.   
     
     
         17 . The system according to  claim 1 ,
 wherein the first valve device and the second valve device each comprise a 3-port/2-position switching valve.   
     
     
         18 . A method for operating an arrangement of a refrigerating machine or heat pump, comprising:
 providing a heat transfer fluid circuit in which a thermochemical reactor, two heat tanks with different temperature levels and a temporary heat store are disposed, wherein the temporary heat store includes two thermally and fluidically separate partial stores, in which a heat transfer fluid present in the heat transfer fluid circuitcan be received thermally and fluidically separately from each other;   removing a heating process heat transfer fluid, temporarily stored in the first partial store of the temporary heat store, is removed from the first heat tank into the thermochemical reactor by the heat transfer fluid, and into the first heat tank while heat transfer fluid is discharged from the thermochemical reactor and into the second partial store of the temporary heat store and   removing a cooling process heat transfer fluid, temporarily stored in the second partial store of the temporary heat store, from the thermochemical reactor and into the second heat tank by the heat transfer fluid in the second partial store while heat transfer fluid (F) is discharged from the thermochemical reactor and introduced into the first partial store of the temporary heat store.   
     
     
         19 . The method of  claim 18 , further comprising:
 providing a housing with an interior space and a dividing element arranged in the interior space;   providing a first sensor element at the first aperture to determine whether the dividing element is in a first end position in which the dividing element is at a first minimum distance from the first aperture; and   providing a second sensor element at the second aperture to determine whether the dividing element is in a second end position in which the dividing element is at a second minimum distance from the second aperture.   
     
     
         20 . The method of  claim 18 , further comprising:
 transporting heat transfer fluid from the first partial store into the first heat tank;   transporting heat transfer fluid from the first heat tank into the thermochemical reactor; and   transporting heat transfer fluid from the thermochemical reactor into the second partial store.