EP4679004A2 - Mischmoduskühlsystem - Google Patents

Mischmoduskühlsystem

Info

Publication number
EP4679004A2
EP4679004A2 EP25188688.3A EP25188688A EP4679004A2 EP 4679004 A2 EP4679004 A2 EP 4679004A2 EP 25188688 A EP25188688 A EP 25188688A EP 4679004 A2 EP4679004 A2 EP 4679004A2
Authority
EP
European Patent Office
Prior art keywords
condenser
evaporator
downstream
fluid path
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP25188688.3A
Other languages
English (en)
French (fr)
Inventor
Pierpaolo BARBATO
Andrea PARISE
Marcello TAMMARO
George Hannah
Giancarlo Furlan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vertiv Corp
Original Assignee
Vertiv Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vertiv Corp filed Critical Vertiv Corp
Publication of EP4679004A2 publication Critical patent/EP4679004A2/de
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
    • F25B1/053—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of turbine type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0401—Refrigeration circuit bypassing means for the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator

Definitions

  • the present disclosure relates generally to heat exchanger systems and more specifically relates to split cooling systems.
  • a cooling system can include two or more condensing modules and each module can selectively operate in either compressed cooling mode or free-cooling mode to help maximize operational efficiency. For example, as an external ambient temperature drops, one or more condensing modules can switch from compressed cooling mode to free-cooling mode to increase the efficiency of the system when the external temperatures are low enough to support partial or full free-cooling, which can advantageously avoid continued use of compressed cooling when unnecessary and provide significant efficiency increases versus single-circuit mixed mode systems.
  • a cooling system can include an evaporator configured to transfer heat to a two-phase cooling fluid, a compressor downstream of the evaporator in a first fluid path of the two-phase cooling fluid, a first condenser downstream of the compressor in the first fluid path, a first expansion valve downstream of the first condenser in the first fluid path and upstream of the evaporator in the first fluid path, a second condenser downstream of the evaporator in a second fluid path of the two-phase cooling fluid, a first pump downstream of the second condenser in the second fluid path and upstream of the evaporator in the second fluid path, a second expansion valve downstream of the first pump in the second fluid path and upstream of the evaporator in the second fluid path, or any combination thereof.
  • the first condenser can selectively communicate with the second fluid path.
  • the two-phase cooling fluid can selectively flow through the evaporator, the compressor, the first condenser, and the first expansion valve.
  • the two-phase cooling fluid can selectively flow through the evaporator and the first condenser, bypassing the compressor and the first expansion valve.
  • the system can include a first check valve downstream of the evaporator and upstream of the first condenser and/or a second check valve downstream of the first condenser and upstream of the evaporator.
  • the first check valve can permit the two-phase cooling fluid to flow from the evaporator to the first condenser bypassing the compressor.
  • the first check valve can prevent the two-phase cooling fluid from flowing from the first condenser to the evaporator.
  • the second check valve can permit the two-phase cooling fluid to flow from the first condenser to the evaporator.
  • the second check valve can prevent the two-phase cooling fluid from flowing from the evaporator to the first condenser.
  • the system can include a second pump in-line with the second check valve between the first condenser and the evaporator and/or a second pump upstream of the second check valve and downstream of the first condenser.
  • the second condenser can selectively communicate with the first fluid path.
  • the two-phase cooling fluid can selectively flow through the evaporator, the compressor, the second condenser, and the first expansion valve.
  • the two-phase cooling fluid can selectively flow through the evaporator and the second condenser, bypassing the compressor and the first expansion valve.
  • the system can include a segregation valve downstream of the compressor in the first fluid path and in fluid communication with the second condenser and/or a check valve downstream of the second condenser and in fluid communication with the first expansion valve.
  • the segregation valve and/or the check valve can selectively isolate the second condenser from the first fluid path.
  • the segregation valve and/or the check valve can selectively communicate the second condenser with the first fluid path.
  • a cooling system can include an evaporator configured to transfer heat to a two-phase cooling fluid, a compressor downstream of the evaporator in a first fluid path of the two-phase cooling fluid, a first segregation valve downstream of the compressor in the first fluid path, a first condenser downstream of the first segregation valve in the first fluid path, a first check valve downstream of the first condenser in the first fluid path, a first expansion valve downstream of the first check valve in the first fluid path and upstream of the evaporator in the first fluid path, a first pump downstream of the first condenser in a second fluid path of the two-phase cooling fluid and upstream of the evaporator in the second fluid path, a second check valve downstream of the evaporator and upstream of the first condenser in the second fluid path, a third check valve downstream of the first condenser and upstream of the evaporator, a second expansion valve downstream of first pump and upstream of the evaporator, a second expansion valve downstream of first
  • the first segregation valve and/or the first check valve can selectively isolate the first condenser from the first fluid path. In at least one example, the first segregation valve and/or the first check valve can selectively communicate the first condenser with the first fluid path. In at least one example, the second check valve can permit the two-phase cooling fluid to flow from the evaporator to the first condenser bypassing the compressor and/or the first segregation valve. In at least one example, the third check valve can permit the two-phase cooling fluid to flow from the first pump to the evaporator.
  • the first fluid path of the two-phase cooling fluid can be through the evaporator, the compressor, the first segregation valve, the first condenser, the first check valve, and the first expansion valve, bypassing second check valve, the first pump, the third check valve, and the second expansion valve.
  • the second fluid path of the two-phase cooling fluid can be through the evaporator, the second check valve, and the first condenser, the first pump, the third check valve, and the second expansion valve, bypassing the compressor, the first segregation valve, the first check valve, and the first expansion valve.
  • the first condenser can selectively cooperate with the compressor and the first expansion valve to provide compressor-based cooling to the two-phase cooling fluid flowing into the evaporator. In at least one example, the first condenser can selectively cooperate with the first pump and the second expansion valve to provide pumped-refrigerant based cooling to the two-phase cooling fluid flowing into the evaporator.
  • the system can include a second segregation valve downstream of the compressor in the first fluid path, a second condenser downstream of the second segregation valve in the first fluid path, a fourth check valve downstream of the second condenser in the first fluid path, a second pump downstream of the second condenser in a second fluid path of the two-phase cooling fluid and upstream of the evaporator in the second fluid path, a fifth check valve downstream of the evaporator and upstream of the second condenser in the second fluid path, a sixth check valve downstream of the second condenser and upstream of the evaporator, or any combination thereof.
  • the second segregation valve and/or the fourth check valve can selectively isolate the second condenser from the first fluid path. In at least one example, the second segregation valve and/or the fourth check valve can selectively communicate the second condenser with the first fluid path. In at least one example, the fifth check valve can permit the two-phase cooling fluid to flow from the evaporator to the second condenser bypassing the compressor and the second segregation valve. In at least one example, the sixth check valve can permit the two-phase cooling fluid to flow from the second pump to the evaporator.
  • the second condenser can selectively cooperate with the compressor and the first expansion valve to provide compressor-based cooling to the two-phase cooling fluid flowing into the evaporator. In at least one example, the second condenser can selectively cooperate with the second pump to provide pumped-refrigerant based cooling to the two-phase cooling fluid flowing into the evaporator.
  • a cooling method can include absorbing heat with a two-phase cooling fluid in an evaporator, and/or cooling a first portion of the two-phase cooling fluid using a compressor and a first condenser while simultaneously cooling a second portion of the two-phase cooling fluid using a first pump and a second condenser.
  • a cooling method can include monitoring an ambient temperature.
  • the method can include cooling the two-phase cooling fluid using the compressor, the first condenser, and the second condenser, bypassing the first pump, such as when the ambient temperature is above a first setpoint.
  • the method can include cooling the first portion of the two-phase cooling fluid using the compressor and the first condenser while simultaneously cooling the second portion of the two-phase cooling fluid using the first pump and the second condenser, such as when the ambient temperature is below the first setpoint and above a second setpoint.
  • the method can include cooling the two-phase cooling fluid using the first pump, the first condenser, and the second condenser, bypassing the compressor, such as when the ambient temperature is below the second setpoint. In at least one example, the method can include cooling the two-phase cooling fluid using the first pump and the second condenser while simultaneously using the first condenser and a second pump, such as when the ambient temperature is below the second setpoint.
  • Couple can include any method or device for securing, binding, bonding, fastening, attaching, joining, inserting therein, forming thereon or therein, communicating, or otherwise associating, for example, mechanically, magnetically, electrically, chemically, operably, directly or indirectly with intermediate elements, one or more pieces of members together and can further include without limitation integrally forming one functional member with another in a unity fashion.
  • the coupling can occur in any direction, including rotationally.
  • all parts and components of the disclosure that are capable of being physically embodied inherently include imaginary and real characteristics regardless of whether such characteristics are expressly described herein, including but not limited to characteristics such as axes, ends, inner and outer surfaces, interior spaces, tops, bottoms, sides, boundaries, dimensions (e.g., height, length, width, thickness), mass, weight, volume and density, among others.
  • a cooling system can include two or more condensing modules and each module can selectively operate in either compressed cooling mode or free-cooling mode to help maximize operational efficiency. For example, as an external ambient temperature drops, one or more condensing modules can switch from compressed cooling mode to free-cooling mode to increase the efficiency of the system when the external temperatures are low enough to support partial or full free-cooling, which can advantageously avoid continued use of compressed cooling when unnecessary and provide significant efficiency increases versus single-circuit mixed mode systems.
  • a cooling system can include a heat exchanger configured to transfer heat to a two-phase cooling fluid, a compressor downstream of the heat exchanger and a plurality of condensers downstream of the compressor. Any or all of the condensers can be selectively operated in compressed cooling mode. In at least one example, any or all of the condensers can be selectively operated in a pumped refrigerant mode, bypassing the compressor, using one or more refrigerant pumps. In this manner, a cooling system according to the disclosure can efficiently accommodate a wide range of cooling demands while providing for increased efficiency, such as during times of decreasing ambient temperatures where at least partial free-cooling mode can be more efficient than full compressed cooling mode.
  • FIG. 1 is a simplified schematic of one of many examples of a cooling system according to the disclosure, operating in a mixed cooling mode.
  • FIG. 2 is a simplified schematic of one of many examples of a cooling system according to the disclosure, operating in a full compressed cooling mode.
  • FIG. 3 is a simplified schematic of one of many examples of a cooling system according to the disclosure, operating in another mixed cooling mode.
  • FIG. 4 is a simplified schematic of one of many examples of a cooling system according to the disclosure, operating in a full pumped cooling mode.
  • FIG. 5A is a partial schematic of one of many examples of a cooling system according to the disclosure.
  • FIG. 5B is the remainder of the schematic of FIG. 5A .
  • FIG. 6 is a legend for the schematic of FIGS. 5A-5B .
  • FIGS. 1-6 are described in conjunction with one another.
  • a cooling system can include one or more centrifugal or "oil free” compressors.
  • a condensing portion can include two or more modules, and each module can have the same or different ventilation compared to the others.
  • Each condensing module can be equipped with a segregation valve which can isolate it from the compressor delivery, and a one-way valve (or other type of valve) which can isolate it from the compressor-based cooling mode liquid line.
  • Each condensing module can also be connected to a pump for selective operation in PRE mode (or free-cooling mode) and to a return line from the evaporator when it operates in free-cooling mode.
  • One-way valves, before and after the condensing module can avoid interaction with the other condensing module(s).
  • An evaporator can be a common element between free-cooling /PRE mode and the compressor-based cooling mode.
  • the liquid lines can be equipped with electronic expansion valves that work autonomously.
  • all the condensing modules can operate in compressor-based cooling mode. As the external temperature decreases, the compressors can be controlled within the working envelope, seeking maximum efficiency through modulation of the fans. When the external temperature is lower than the equivalent evaporating temperature, the PRE system can provide high efficiency cooling capacity.
  • one of the condensing modules can be segregated from the other module(s) working in compressor-based cooling mode, such as via one or more segregation valves.
  • a corresponding PRE-mode pump can be activated and/or modulated, together with the fans of that condensing module, up to a refrigerant flow rate such that the efficiency of the module or loop is higher than that of the compressor-based cooling mode.
  • An electronic expansion valve can be modulated or can otherwise modulate for attaining a correct back pressure upstream and/or downstream of the pump.
  • the compressor(s) will reduce their contribution and other condenser modules can be switched to PRE mode, as discussed above.
  • the compressor(s) can be switched off.
  • one or more modules can be switched back to compressed cooling mode, simultaneously or successively.
  • a system according to the disclosure can be more efficient, as there will be no aeraulic pressure drops of two exchangers in series.
  • glycol is not necessary as only the refrigerant need circulate in the air exchangers. Therefore, in addition to a higher seasonal efficiency, in at least one example, a system according to the disclosure can reduce or eliminate the risk of glycol spillage into the environment.
  • a system according to the disclosure can increase the ability to keep one or more compressors in the best possible compression ratio under the circumstances of the implementation.
  • a mixed-mode of a system according to the disclosure can also allow a transition from compressor-based cooling to PRE mode without cooling interruption, with consequent reduction of the volume of a secondary fluid tank, which can reduce space requirements and/or initial installation expense.
  • a cooling system 100 can include one or more evaporators 102 configured to transfer heat to a two-phase cooling fluid, one or more compressors 104 downstream of the evaporator 102 in a first fluid path A of the two-phase cooling fluid, one or more condensers 106 downstream of the compressor 104 in the first fluid path A, one or more expansion valves 108 downstream of the condenser 106 in the first fluid path A and upstream of the evaporator 102 in the first fluid path A, one or more other condensers 106 downstream of the evaporator 102 in a second fluid path B of the two-phase cooling fluid, one or more pumps 110 downstream of the second condenser 106 in the second fluid path B and upstream of the evaporator 102 in the second fluid path B, one or more other expansion valves 108 downstream of the first pump 110 in the second fluid path B and upstream of the evaporator 102 in the second fluid path B, one or more check valves 112 in the
  • the first fluid path A and the second fluid path B can have some common piping, such as that exiting the evaporator 102.
  • the evaporator 102 can transfer heat to the two-phase cooling fluid from a single-phase cooling fluid, or another two-phase cooling fluid.
  • each condenser 106 can selectively communicate with the first fluid path A and/or the second fluid path B.
  • a first condenser 106a can selectively communicate with the first fluid path A and/or the second fluid path B.
  • the two-phase cooling fluid can selectively flow through the evaporator 102, the compressor 104, the first condenser 106a, and a first expansion valve 108a.
  • the two-phase cooling fluid can selectively flow through the evaporator 102 and the first condenser 106a, bypassing the compressor 104 and the first expansion valve 108a.
  • the system 100 can include a first check 112a valve downstream of the evaporator 102 and upstream of the first condenser 106a and/or a second check valve 112b downstream of the first condenser 103a and upstream of the evaporator 102.
  • the first check valve 112a can permit the two-phase cooling fluid to flow from the evaporator 102 to the first condenser 106a bypassing the compressor.
  • the first check valve 112a can prevent the two-phase cooling fluid from flowing from the first condenser 106a to the evaporator 102.
  • the second check valve 112b can permit the two-phase cooling fluid to flow from the first condenser 106a to the evaporator 102. In at least one example, the second check valve 112b can prevent the two-phase cooling fluid from flowing from the evaporator 102 to the first condenser 106a.
  • the system 100 can include a second pump 110a in-line with the second check valve 114 between the first condenser 106a and the evaporator 102. In at least one example, the second pump 110a can be downstream of the first condenser 106a and either upstream or downstream of the second check valve 114a.
  • a second condenser 106b can selectively communicate with the first fluid path A.
  • the two-phase cooling fluid can selectively flow through the evaporator 102, the compressor 104, the second condenser 106b, and the first expansion valve 108a.
  • the two-phase cooling fluid can selectively flow through the evaporator 102 and the second condenser 106b, bypassing the compressor 104 and the first expansion valve 108a.
  • the system 100 can include a segregation valve 114b downstream of the compressor 104 in the first fluid path A and in fluid communication with the second condenser 106b and/or a check valve 112f downstream of the second condenser 106b and in fluid communication with the first expansion valve 108.
  • the segregation valve 114b and/or the check valve 112f can selectively isolate the second condenser 106b from the first fluid path A.
  • the segregation valve 114b and/or the check valve 112f can selectively communicate the second condenser 106b with the first fluid path A.
  • the first condenser 106a can cooperate with the compressor 104 and the first expansion valve 108a to provide compressor-based cooling to the two-phase cooling fluid flowing into the evaporator 102.
  • the second condenser 106b can cooperate with the pump 110b to provide pumped-refrigerant based cooling to the two-phase cooling fluid flowing into the evaporator 102.
  • the first condenser 106a can cooperate with the compressor 104 and the first expansion valve 108a to provide compressor-based cooling to the two-phase cooling fluid flowing into the evaporator 102 while the second condenser 106b simultaneously cooperates with the pump 110b to provide pumped-refrigerant based cooling to the two-phase cooling fluid flowing into the evaporator 102.
  • a cooling system 100 can include one or more evaporators 102 configured to transfer heat to a two-phase cooling fluid, one or more compressors 104 downstream of the evaporator 102 in a first fluid path A of the two-phase cooling fluid, one or more segregation valves 114 downstream of the compressor 104 in the first fluid path A, a first condenser 106a downstream of a first segregation valve 114a in the first fluid path A, a first check valve 112c downstream of the first condenser 106a in the first fluid path A, a first expansion valve 108a downstream of the first check valve 112c in the first fluid path A and upstream of the evaporator 102 in the first fluid path A, a first pump 110a downstream of the first condenser 106a in a second fluid path B of the two-phase cooling fluid and upstream of the evaporator 102 in the second fluid path B, a second check valve 112a downstream of the evaporator 102
  • the first segregation valve 114a and/or the first check valve 112c can selectively isolate the first condenser 106a from the first fluid path A. In at least one example, the first segregation valve 114a and/or the first check valve 112c can selectively communicate the first condenser 106a with the first fluid path A. In at least one example, the second check valve 112a can permit the two-phase cooling fluid to flow from the evaporator 102 to the first condenser 106a bypassing the compressor 104 and/or the first segregation valve 114a. In at least one example, the third check valve 112b can permit the two-phase cooling fluid to flow from the first pump 110a to the evaporator 102.
  • the first fluid path A of the two-phase cooling fluid can be through the evaporator 102, the compressor 104, the first segregation valve 114a, the first condenser 106a, the first check valve 112c, and the first expansion valve 108a, bypassing second check valve 112a, the first pump 110a, the third check valve 112b, and the second expansion valve 108b.
  • the second fluid path B of the two-phase cooling fluid can be through the evaporator 102, the second check valve 112a, and the first condenser 106a, the first pump 110a, the third check valve 112b, and the second expansion valve 108b, bypassing the compressor 104, the first segregation valve 114a, the first check valve112c, and the first expansion valve 108a.
  • the first condenser 106a can selectively cooperate with the compressor 104 and the first expansion valve 108a to provide compressor-based cooling to the two-phase cooling fluid flowing into the evaporator 102. In at least one example, the first condenser 106a can selectively cooperate with the first pump 110a and/or the second expansion valve 108b to provide pumped-refrigerant based cooling to the two-phase cooling fluid flowing into the evaporator 102.
  • the system 100 can include a second segregation valve 114b downstream of the compressor 104 in the first fluid path A, a second condenser 106b downstream of the second segregation valve 114b in the first fluid path A, a fourth check valve 112f downstream of the second condenser 106b in the first fluid path A, a second pump 110b downstream of the second condenser 106b in a second fluid path B of the two-phase cooling fluid and upstream of the evaporator 102 in the second fluid path B, a fifth check valve 112d downstream of the evaporator 102 and upstream of the second condenser 106b in the second fluid path B, a sixth check valve 112e downstream of the second condenser 106b and upstream of the evaporator 102, or any combination thereof.
  • the second segregation valve 114b and/or the fourth check valve 112f can selectively isolate the second condenser 106b from the first fluid path A. In at least one example, the second segregation 114b valve and/or the fourth check valve 112f can selectively communicate the second condenser 106b with the first fluid path A. In at least one example, the fifth check valve 112d can permit the two-phase cooling fluid to flow from the evaporator 102 to the second condenser 106b bypassing the compressor 104 and the second segregation valve 114b. In at least one example, the sixth check valve 112e can permit the two-phase cooling fluid to flow from the second pump 110b to the evaporator 102.
  • the second condenser 106b can selectively cooperate with the compressor 104 and/or the first expansion valve 108a to provide compressor-based cooling to the two-phase cooling fluid flowing to the evaporator 102.
  • the second condenser 106b can selectively cooperate with the second pump 110b to provide pumped-refrigerant based cooling, or free cooling, to the two-phase cooling fluid flowing to the evaporator 102.
  • one or more pipes can be insulated, such as one or more pipes fluidically between the evaporator 102 and any or all compressors 104. While one or more dimensions (e.g., pipe or conduit sizes) may be included in one or more figures of the present disclosure, such dimensions are not limitative and are merely illustrative of one of many possible implementations of the present disclosure.
  • a cooling method can include absorbing heat with a two-phase cooling fluid in an evaporator 102, and/or cooling a first portion of the two-phase cooling fluid using a compressor 104 and a first condenser 106a while simultaneously cooling a second portion of the two-phase cooling fluid using a first pump 110b and a second condenser 106b.
  • a cooling method can include monitoring an ambient temperature.
  • the method can include cooling the two-phase cooling fluid using the compressor 104, the first condenser 106a, and the second condenser 106b, bypassing the first pump 110b, such as when the ambient temperature is above a first setpoint.
  • the method can include cooling the first portion of the two-phase cooling fluid using the compressor 104 and the first condenser 106a while simultaneously cooling the second portion of the two-phase cooling fluid using the first pump 110b and the second condenser 106b, such as when the ambient temperature is below the first setpoint and above a second setpoint.
  • the method can include cooling the two-phase cooling fluid using the first pump 110b, the first condenser 106a, and the second condenser 106b, bypassing the compressor 104, such as when the ambient temperature is below the second setpoint.
  • the method can include cooling the two-phase cooling fluid using the first pump 110b and the second condenser 106b while simultaneously using the first condenser 106a and a second pump 110a, such as when the ambient temperature is below the second setpoint.
  • a system 100 according to the disclosure could use a compressor 104 for each condenser 106.
  • a system 100 according to the disclosure can use one pump 110 servicing two or more condensers 106.
  • the system 100 can include a segregation valve 114 between the first condenser 106a and the pump 110 and another segregation valve 114 between the second condenser 106b and the pump 110. By opening one or both segregations valves 114, as desired, the system 100 can use one pump 110 to service both condensers 106a, 106b in free-cooling mode.
  • a cooling system can include an evaporator configured to transfer heat to a two-phase cooling fluid, a compressor downstream of the evaporator in a first fluid path of the two-phase cooling fluid, a first condenser downstream of the compressor in the first fluid path, a first expansion valve downstream of the first condenser in the first fluid path and upstream of the evaporator in the first fluid path, a second condenser downstream of the evaporator in a second fluid path of the two-phase cooling fluid, a first pump downstream of the second condenser in the second fluid path and upstream of the evaporator in the second fluid path, a second expansion valve downstream of the first pump in the second fluid path and upstream of the evaporator in the second fluid path, or any combination thereof.
  • the first condenser can selectively communicate with the second fluid path.
  • the two-phase cooling fluid can selectively flow through the evaporator, the compressor, the first condenser, and the first expansion valve.
  • the two-phase cooling fluid can selectively flow through the evaporator and the first condenser, bypassing the compressor and the first expansion valve.
  • the system can include a first check valve downstream of the evaporator and upstream of the first condenser and/or a second check valve downstream of the first condenser and upstream of the evaporator.
  • the first check valve can permit the two-phase cooling fluid to flow from the evaporator to the first condenser bypassing the compressor.
  • the first check valve can prevent the two-phase cooling fluid from flowing from the first condenser to the evaporator.
  • the second check valve can permit the two-phase cooling fluid to flow from the first condenser to the evaporator.
  • the second check valve can prevent the two-phase cooling fluid from flowing from the evaporator to the first condenser.
  • the system can include a second pump in-line with the second check valve between the first condenser and the evaporator and/or a second pump upstream of the second check valve and downstream of the first condenser.
  • the second condenser can selectively communicate with the first fluid path.
  • the two-phase cooling fluid can selectively flow through the evaporator, the compressor, the second condenser, and the first expansion valve.
  • the two-phase cooling fluid can selectively flow through the evaporator and the second condenser, bypassing the compressor and the first expansion valve.
  • the system can include a segregation valve downstream of the compressor in the first fluid path and in fluid communication with the second condenser and/or a check valve downstream of the second condenser and in fluid communication with the first expansion valve.
  • the segregation valve and/or the check valve can selectively isolate the second condenser from the first fluid path.
  • the segregation valve and/or the check valve can selectively communicate the second condenser with the first fluid path.
  • the first condenser can cooperate with the compressor and the first expansion valve to provide compressor-based cooling to the two-phase cooling fluid flowing into the evaporator.
  • the second condenser can cooperate with the pump to provide pumped-refrigerant based cooling to the two-phase cooling fluid flowing into the evaporator.
  • the first condenser can cooperate with the compressor and the first expansion valve to provide compressor-based cooling to the two-phase cooling fluid flowing into the evaporator while the second condenser simultaneously cooperates with the pump to provide pumped-refrigerant based cooling to the two-phase cooling fluid flowing into the evaporator.
  • a cooling system can include an evaporator configured to transfer heat to a two-phase cooling fluid, a compressor downstream of the evaporator in a first fluid path of the two-phase cooling fluid, a first segregation valve downstream of the compressor in the first fluid path, a first condenser downstream of the first segregation valve in the first fluid path, a first check valve downstream of the first condenser in the first fluid path, a first expansion valve downstream of the first check valve in the first fluid path and upstream of the evaporator in the first fluid path, a first pump downstream of the first condenser in a second fluid path of the two-phase cooling fluid and upstream of the evaporator in the second fluid path, a second check valve downstream of the evaporator and upstream of the first condenser in the second fluid path, a third check valve downstream of the first condenser and upstream of the evaporator, a second expansion valve downstream of first pump and upstream of the evaporator, a second expansion valve downstream of first
  • the first segregation valve and/or the first check valve can selectively isolate the first condenser from the first fluid path. In at least one example, the first segregation valve and/or the first check valve can selectively communicate the first condenser with the first fluid path. In at least one example, the second check valve can permit the two-phase cooling fluid to flow from the evaporator to the first condenser bypassing the compressor and/or the first segregation valve. In at least one example, the third check valve can permit the two-phase cooling fluid to flow from the first pump to the evaporator.
  • the first fluid path of the two-phase cooling fluid can be through the evaporator, the compressor, the first segregation valve, the first condenser, the first check valve, and the first expansion valve, bypassing second check valve, the first pump, the third check valve, and the second expansion valve.
  • the second fluid path of the two-phase cooling fluid can be through the evaporator, the second check valve, and the first condenser, the first pump, the third check valve, and the second expansion valve, bypassing the compressor, the first segregation valve, the first check valve, and the first expansion valve.
  • the first condenser can selectively cooperate with the compressor and the first expansion valve to provide compressor-based cooling to the two-phase cooling fluid flowing into the evaporator. In at least one example, the first condenser can selectively cooperate with the first pump and the second expansion valve to provide pumped-refrigerant based cooling to the two-phase cooling fluid flowing into the evaporator.
  • the system can include a second segregation valve downstream of the compressor in the first fluid path, a second condenser downstream of the second segregation valve in the first fluid path, a fourth check valve downstream of the second condenser in the first fluid path, a second pump downstream of the second condenser in a second fluid path of the two-phase cooling fluid and upstream of the evaporator in the second fluid path, a fifth check valve downstream of the evaporator and upstream of the second condenser in the second fluid path, a sixth check valve downstream of the second condenser and upstream of the evaporator, or any combination thereof.
  • the second segregation valve and/or the fourth check valve can selectively isolate the second condenser from the first fluid path. In at least one example, the second segregation valve and/or the fourth check valve can selectively communicate the second condenser with the first fluid path. In at least one example, the fifth check valve can permit the two-phase cooling fluid to flow from the evaporator to the second condenser bypassing the compressor and the second segregation valve. In at least one example, the sixth check valve can permit the two-phase cooling fluid to flow from the second pump to the evaporator.
  • the second condenser can selectively cooperate with the compressor and the first expansion valve to provide compressor-based cooling to the two-phase cooling fluid flowing into the evaporator. In at least one example, the second condenser can selectively cooperate with the second pump to provide pumped-refrigerant based cooling to the two-phase cooling fluid flowing into the evaporator.
  • a cooling method can include absorbing heat with a two-phase cooling fluid in an evaporator, and/or cooling a first portion of the two-phase cooling fluid using a compressor and a first condenser while simultaneously cooling a second portion of the two-phase cooling fluid using a first pump and a second condenser.
  • a cooling method can include monitoring an ambient temperature.
  • the method can include cooling the two-phase cooling fluid using the compressor, the first condenser, and the second condenser, bypassing the first pump, such as when the ambient temperature is above a first setpoint.
  • the method can include cooling the first portion of the two-phase cooling fluid using the compressor and the first condenser while simultaneously cooling the second portion of the two-phase cooling fluid using the first pump and the second condenser, such as when the ambient temperature is below the first setpoint and above a second setpoint.
  • the method can include cooling the two-phase cooling fluid using the first pump, the first condenser, and the second condenser, bypassing the compressor, such as when the ambient temperature is below the second setpoint. In at least one example, the method can include cooling the two-phase cooling fluid using the first pump and the second condenser while simultaneously using the first condenser and a second pump, such as when the ambient temperature is below the second setpoint.
  • the devices, systems and methods can be implemented for numerous different types and sizes in numerous different industries.
  • the various methods and examples of the devices, systems and methods can be included in combination with each other to produce variations of the disclosed methods and examples. Discussion of singular elements can include plural elements and vice versa.
  • the order of steps can occur in a variety of sequences unless otherwise specifically limited.
  • the various steps described herein can be combined with other steps, interlineated with the stated steps, and/or split into multiple steps.
  • elements have been described functionally and can be embodied as separate components or can be combined into components having multiple functions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP25188688.3A 2024-07-10 2025-07-10 Mischmoduskühlsystem Pending EP4679004A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US202463669472P 2024-07-10 2024-07-10

Publications (1)

Publication Number Publication Date
EP4679004A2 true EP4679004A2 (de) 2026-01-14

Family

ID=96343668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP25188688.3A Pending EP4679004A2 (de) 2024-07-10 2025-07-10 Mischmoduskühlsystem

Country Status (3)

Country Link
US (1) US20260016198A1 (de)
EP (1) EP4679004A2 (de)
CN (1) CN121335046A (de)

Also Published As

Publication number Publication date
CN121335046A (zh) 2026-01-13
US20260016198A1 (en) 2026-01-15

Similar Documents

Publication Publication Date Title
US9316424B2 (en) Multi-stage cooling system with tandem compressors and optimized control of sensible cooling and dehumidification
US8347644B2 (en) Air conditioning system
EP3094167A1 (de) Hocheffizientes kühlsystem
CN104813757B (zh) 具有开关柜和冷却设备的冷却装置
US20060037329A1 (en) Thermal energy storage and cooling system with secondary refrigerant isolation
US20210364208A1 (en) Heating, Ventilation, and Air-Conditioning System with a Thermal Energy Storage Device
CA2995951C (en) Integrated refrigeration and air conditioning system
EP2568232A2 (de) Klimaanlage
US20220049886A1 (en) Methods and systems for controlling working fluid in hvacr systems
US20230392870A1 (en) Heat exchanger for a heating, ventilation, and air-conditioning system
CN101506595A (zh) 带有脉冲宽度调制吸入阀的串排复缸压缩机
US11215388B2 (en) Refrigerant charge management
EP4679004A2 (de) Mischmoduskühlsystem
US11519645B2 (en) Air conditioning apparatus
CN213119617U (zh) 一种模块化制冷系统
US12111082B2 (en) Air conditioning apparatus
US20210381699A1 (en) Heat Exchanger For A Heating, Ventilation, And Air-Conditioning System
KR101676492B1 (ko) 냉매 사이클 시스템의 냉매 제어를 위한 정압기
CN115200250B (zh) 一种氟泵压缩制冷系统及其控制方法
CN214406557U (zh) 一种多合一空调机组
CN116803742A (zh) 充电枪线换热系统
JP3728592B2 (ja) 空気調和機
JP2007147128A (ja) 熱交換器および空気調和機
CN219797563U (zh) 数据中心用空调系统
US20060130515A1 (en) Refrigeration system and a method for operating such system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR