CO2 REFRIGERATION SYSTEM WITH MAGNETIC REFRIGERATION SYSTEM COOLING
FIG2 is a schematic diagram of the CO2 refrigeration system of FIG1 with a bypass line and control valve to bypass the after-cooler of the magnetic refrigeration system, according to an exemplary embodiment
Referring particularly to FIG2, in some embodiments, MRS 30 includes a bypass conduit connecting fluid conduits 35 and 36. Bypass conduit 39 may provide an alternative path for the coolant to flow from fluid conduit 35 to fluid conduit 36 without passing through heat exchanger 31. In some embodiments, a control valve 38 is located along bypass conduit 39 or at the intersection of bypass conduit 39 and fluid conduit 36. Control valve 38 can be operated to control the flow of coolant through bypass conduit 39 and/or the flow of coolant through heat exchanger 31. In some embodiments, control valve 38 is operated to limit the amount of heat gained by the coolant in heat exchanger 31. For example, control valve 38 can be operated to minimize the amount of heat gained by the coolant in heat exchanger 31 to prevent MRS 30 from being overwhelmed.
schematic diagram
30
MRS
38
control valve
9
fluid conduit fluid conduits
37
coolant circuit
20
subsystem
21
expansion valves
25
fluid conduit
31
heat exchanger
10
subsystem
15
vapor portion
36
fluid conduit fluid conduits
23
refrigerant via fluid conduit approximately
['1. A refrigeration system (100) comprising: a refrigeration circuit comprising: a gas cooler/condenser (2) configured to remove heat from a refrigerant circulating within the refrigeration circuit and comprising an outlet through which the refrigerant exits the gas cooler/condenser (2); a receiver (6) comprising an inlet fluidly coupled to the outlet of the gas cooler/condenser (2) and configured to collect the refrigerant from the gas cooler/condenser (2), the receiver further comprising an outlet through which the refrigerant exits the receiver (6); and an evaporator (12) comprising an inlet fluidly coupled to the outlet of the receiver (6) and configured to receive the refrigerant from the receiver (6), the evaporator (12) configured to transfer heat into the refrigerant circulating within the refrigeration circuit; and a coolant circuit fluidly separate from the refrigeration circuit and comprising: a heat exchanger (31) configured to transfer heat from the refrigerant circulating within the refrigeration circuit into a coolant circulating within the coolant circuit, the heat exchanger (31) comprising a coolant inlet through which the coolant enters the heat exchanger (31) and a coolant outlet through which the coolant exits the heat exchanger (31); a heat sink (34) configured to remove heat from the coolant circulating within the coolant circuit, the heat sink (34) comprising an inlet fluidly coupled to the coolant outlet of the heat exchanger (31) and through which the coolant enters the heat sink (34), and comprising an outlet fluidly coupled to the coolant inlet of the heat exchanger (31) and through which the coolant exits the heat sink (34); and a magnetocaloric conditioning unit (32) configured to transfer heat from the coolant within a first fluid conduit of the coolant circuit into the coolant within a second fluid conduit of the coolant circuit, the first fluid conduit fluidly coupling the coolant outlet of the heat exchanger (31) to the inlet of the heat sink (34), and the second fluid conduit fluidly coupling the outlet of the heat sink (34) to the coolant inlet of the heat exchanger (31).', '7. The refrigeration system of Claim 1, wherein the coolant circuit comprises: a bypass conduit fluidly coupling the second fluid conduit of the coolant circuit to the first fluid conduit of the coolant circuit in parallel with the heat exchanger (31), thereby providing an alternative flow path for the coolant to travel from the second fluid conduit to the first fluid conduit without passing through the heat exchanger (31); a control valve (38) positioned along the bypass conduit and operable to control a flow of the coolant through at least one of the bypass conduit and the heat exchanger (31).']