CN103185410A - Cooling system for improving high-density thermal load - Google Patents
Cooling system for improving high-density thermal load Download PDFInfo
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- CN103185410A CN103185410A CN2012105991675A CN201210599167A CN103185410A CN 103185410 A CN103185410 A CN 103185410A CN 2012105991675 A CN2012105991675 A CN 2012105991675A CN 201210599167 A CN201210599167 A CN 201210599167A CN 103185410 A CN103185410 A CN 103185410A
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Abstract
The present invention provides a cooling system for improving high-density thermal load. The cooling system with pumping refrigerant is provided with a plurality of pump units for providing working fluid to the load, for cooling space through the load. The cooling system with pumping refrigerant operates the pump units under capacity. When the pump unit is disabled, the output of the remaining pump units increase to maintain the fluid flow.
Description
The cross reference of related application
The application number that the application requires to submit on December 28th, 2011 is No.61/580,686 U.S. Provisional Application No. rights and interests.Whole disclosures of above-mentioned application are incorporated in this by reference.
Technical field
The disclosure relates to the pump refrigerant cooling system of using be used to the accurate cooling with 1+1 to N+1 primary cooling circuit redundancy.
Background technology
This part provides the background technical information relevant with the disclosure, and it needs not to be prior art.
Data center is the room that comprises many electronic equipments, for example computer server.Data center and the equipment that is included in wherein typically specifically have best environment running status, particularly temperature and humidity.Atmosphere control system keeps suitable temperature and humidity in the data center.
Atmosphere control system comprises cooling system, and it cools off air and supplies cool air to data center.Cooling system can comprise air-conditioning unit, for example computer room air-treatment (CRAH) or computer room air-conditioning (CRAC) unit, and its cooling is provided to the air of data center.Floor and cold air that data center can have rising are introduced into by the ventilating opening in the rising floor.The floor that raises can be configured to be provided at air compartment and the ventilating opening in the rising floor (vent) between the cold-air vent of CRAH (or CRAHs) or CRAC (or CRACs), perhaps also can use for example air compartment that separates (plenum) of pipe (duct).
Data center can also have hard floor.CRACS can for example be arranged in the several rows of electronic equipment, can arrange their cold air supply towards cold passageway (aisle) separately, or puts CRACS along the wall cloth of data center.Equipment frame (rack) at the data center place can be arranged in the hot passageway/cold passageway structure with the equipment frame that sets in a row.Typically at the cool air inlet of a framed bent of the front of the frame cool air inlet in the face of the framed bent that passes cold passageway, and the hot air outlet of a framed bent is in the face of the hot air outlet of the framed bent that passes hot passageway.
One type cooling system uses the pump refrigerant cooling unit, for example the cooling unit that uses from the XD system that Ohio Columbian LIEBERT (Liebert) company obtains.Liebert XD system has two cooling circuits, and it also can be called cooling circuit or circulation.Primary return uses chilled water or cold-producing medium, and for example R407C, and secondary loop uses pump refrigerant, for example R134a.Primary return is included in fluid heat exchanger so that the fluid of the pump refrigerant that cooling circulates in the secondary loop.The secondary loop comprises one or more phase transformation cooling packages, and it has the fluid to air heat exchanger, by its circulation pump refrigerant in case cool stream through the air of heat exchanger.According to specific design, heat exchanger typically can comprise evaporator coil and flow regulator or expansion valve.
USSN10/904 is expressed and be described in to foundation drawing for two cooling circuits of LiebertXD system (or circulation), and 889, name is called " cooling system (Cooling System for High Density Heat Load) that is used for the high density heat load ", it wholely openly is incorporated herein by reference.Fig. 1 of above-mentioned application and Fig. 2 are included in this and describe as Fig. 1 and Fig. 2.
With reference to figure 1 and Fig. 2, disclosed cooling system 10 comprises first cool cycles 12 (primary cooling circuit) with second circulation 14 (secondary cooling loop) thermal communication.Disclosed cooling system 10 also comprises control system 90.First and second circulations 12 and 14 include independently working fluid.Working fluid in second circulation is any volatile fluid that is suitable as conventional cold-producing medium, includes, without being limited to CFC (CFCs), hydrogen fluorohydrocarbon (HFCs), or hydrochlorofluorocarsolvent (HCFCs).Use volatile working fluid to eliminate and near apparatus sensitive, make water, as what do at the conventional system that is used for the cooling computer machine room sometimes.Second circulation 14 comprises pump 20, and one or more first heat exchangers (evaporimeter) 30, the second heat exchangers 40 are with the pipe of the different parts of second circulation 14 that interconnects.Second circulation 14 is not vapor compression refrigeration system.Replace, second circulation 14 uses pump 20 to replace compressor so that circulation is used for from volatile working fluid of heat load heat radiation.Pump 20 preferably can pumping run through volatile working fluid of second cool cycles 14, and preferably controls by the control system of controller 90 realizations.
In one embodiment, gas-liquid heat-exchange 30 can be used for cooling off the room that comprises computer equipment.For example, fan 34 can deflate by heat exchanger 30 from the room in (heat load), and second working fluid absorbs the heat from air there.In another embodiment, gas-liquid heat-exchange 30 can be used for by or directly remove heat from the electronic equipment (heat load) of generation heat near equipment place mounting heat exchanger 30.For example, electronic equipment typically is included in (not shown) in the shell.Heat exchanger 30 can be installed on the shell, and fan 34 can deflate from shell by heat exchanger 30.Alternatively, first heat exchanger 30 can be the heat exchanger (for example cold plate) of alternately type, and it contacts with the thermal source direct heat.Heat exchange rate, size and other design parameters that it will be appreciated by those skilled in the art that the parts of disclosed cooling system 10 depends on the value of the size of disclosed cooling system 10, the heat load managed and other details of particular implementation.
In the embodiment of the disclosed cooling system 10 that Fig. 1 describes, first circulation 12 comprises the chilled water circulation 60 of the liquid-liquid heat exchanger 40 that is connected to second circulation 14.Specifically, second heat exchanger 40 has first and second parts or fluid path 42 and 44 of thermal communication each other.Second path 42 that is used for the volatility working fluid connects between first heat exchanger 30 and pump 20.First fluid path 44 connects chilled water circulation 60.Chilled water circulation 60 can be similar to known in the art.Chilled water system 60 comprises first working fluid that absorbs heat through liquid-liquid heat exchanger 40 from second working fluid.First working fluid is cooled by the technology that circulates for the chilled water of routine known in the art then.Usually, first working fluid can be volatile or nonvolatile.For example, in the embodiment in figure 1, first working fluid can be water, ethylene glycol or its mixture.Therefore, the embodiment of second circulation 14 can be configured to hold pump 20, gas-liquid heat-exchange 30 and liquid-liquid heat exchanger 40 among Fig. 1, and can connect existing chilled water service, for example the available cooled equipment of holding under construction.
In the embodiment of the disclosed cooling system 10 of Fig. 2, second circulation 14 is basically with above-described identical.Yet first circulation 12 comprises the flow path 44 of the heat exchanger 40 that is connected to second circulation 14 or the vapor compression refrigeration system 70 of first.As in the embodiment in figure 1, replace using chilled water in order to remove heat from second circulation 14, the refrigeration system 70 in Fig. 2 directly is connected to liquid-liquid heat exchanger 40 or its " second half ".Vapor compression refrigeration system 70 can be substantially similar to known in the art.Typical vapor compression refrigeration system 70 comprises compressor 74, condenser 76 and expansion gear 78.Pipe 72 interconnects these parts and be connected to first flow path 44 of heat exchanger 40.
Vapor compression refrigeration system 70 is by removing heat to the environment (not shown) from second working fluid through second heat exchanger 40 from interchanger 40 absorption heats and radiate heat with first working fluid.For example, in the embodiment of Fig. 2, first working fluid can be the chemical refrigerant of any routine, includes, without being limited to CFC (CFCs), hydrogen fluorohydrocarbon (HFCs), or HCFC (HCFCs).Expansion gear 78 can be valve, aperture or other devices well known by persons skilled in the art, in order to produce working fluid through out-of-date pressure drop.Compressor 74 can be the compressor of any kind of known in the art, in order to be suitable for cold-producing medium service, for example reciprocating compressor, scroll compressor etc.In the embodiment that Fig. 2 describes, cooling system 10 is a whole set of.For example, vapor compression refrigeration system 70 can belong to the part of individual unit, and it also holds pump 20 and liquid-liquid heat exchanger 30.
In disclosed system operating period, pump 20 moves to gas-liquid heat-exchange 30 by managing 22 with working fluid.Pump increases the pressure of working fluid, and the maintenance of its enthalpy is substantially the same.Therefore pumping workflow physical efficiency enters the evaporimeter 30 of gas-liquid heat-exchange or second circulation 14 after process flow regulator 32.Fan 34 can deflate from heat load through heat exchanger 30.When hot-air entered gas-liquid heat-exchange 30 from the heat load (not shown), volatile working fluid absorbed heat.When fluid is heated through heat exchanger, some volatile working fluids will evaporate.In the cooling system 10 of load fully, the fluid that leaves first heat exchanger 30 can be steam basically.Steam flow to liquid-liquid heat exchanger 40 from heat exchanger 30 through pipe 36.In pipe or return line 36, working fluid is vapor state basically, and when its enthalpy kept substantial constant, fluid pressure descended.In liquid-liquid heat exchanger 40, the steam in second fluid path 42 by with first circulation 12 of transfer of heat in the first fluid path 44 first, colder fluid is condensed.The working fluid of condensation leaves heat exchanger 40 and enters pump 20 by managing 46, and second circulation 14 can repeat there.
First cool cycles 12 and second circulation 14 operation jointly are so that by absorbing from second working fluid that heat enters first working fluid and heat is discharged to the environment (not shown) and removes heat from second circulation 14.As mentioned above, first circulation, 12 chilled water system 60 or the vapor compression refrigeration systems as shown in Figure 2 70 that can comprise as shown in Figure 1.At chilled water system 60 run durations of Fig. 1, for example, first working fluid can flow through the first fluid path 44 of heat exchanger 40, and can cool off in the cooling tower (not shown).At the run duration of the refrigeration system 70 of Fig. 2, for example, first working fluid is through the first 44 of liquid-liquid heat exchanger 40, and the volatile fluid from second circulation 14 absorbs heat.Working fluid evaporates during the course.Steam is transported to compressor 74, and working fluid is compressed there.Compressor 74 can be back and forth, the compressor of vortex or other kind known in the art.After compressing, working fluid is carried through discharge pipe and is arrived condenser 76, and heat is dissipated into external heat sink from working fluid there, for example, and outdoor environment.When leaving condenser 76, flow of refrigerant arrives expansion gear 78 through liquid line.When cold-producing medium process expansion gear 78, the pressure drop of first working fluid experience.When leaving expansion gear 78, working fluid flows through the first fluid path of liquid-liquid heat exchanger 40, and it is as the evaporimeter that is used for kind of refrigeration cycle 70.
The supplier of data center constantly seeks and improves reliability and from uptime (up time) of atmosphere control system.Therefore, the supplier of data center constantly needs to improve the redundancy in atmosphere control system, so that the prevention cooling electronic apparatus is because the unexpected unnecessary downtime of interrupting the operation of atmosphere control system.A redundant pattern is to copy each element of cooling system, for example first cool cycles 12 and second cool cycles 14.This whole redundancy may be expensive and be very complicated Cooling System Design, enforcement and control.In different structures, redundancy can comprise the enforcement of cooling circuit, comprises for example second enforcement that reduces of second cool cycles 14 shown in Fig. 1 and Fig. 2.The redundancy that reduces can comprise the second pump unit 20 and half of the heat exchanger that provides in elementary cooling system.Carry out these redundant systems and will also need detection and the control of being correlated with.Correspondingly, about cost of this system can be within 50% scope of basic cold load cost sum.
For redundancy so as another method of minimization device can comprise by utilizing cooling package excessively to provide environment with configuration complexity, that intersect.Therefore the fault of a cooling circuit can become the zone of a cooling circuit of damage by other cooling circuit intersection.This cost that raising is provided again for the consumer that excessively provides, it comprises extra pump, cooling package, detection, pipeline and the control system of the routine configuration that surpasses shown in Fig. 1 and Fig. 2.
Summary of the invention
This part provides summary of the invention of the present disclosure, and is not four corner comprehensively open of its feature.
Cooling system has the supply cooling fluid and gives a plurality of pumps unit of load.In various structures, the pump unit is supplied a part of cooling fluid and is given load.If pump unit experience failure condition, then the output of other pump unit increases to keep the fluid flow of abundance to give load.In another structure, other pump unit is provided, its under normal circumstances not the accommodating fluid flow give load.When a pump unit in other pump unit experienced failure condition, another pump unit started to provide fluid flow to load.In another structure, a plurality of pumps unit provides fluid flow to separately load in a plurality of loads.When pump unit experience failure condition, redundant pump unit inserts the loop and gives the load relevant with pump unit under the fault condition with the supply fluid flow.
Cooling system comprises first refrigerating module, and this refrigerating module has first variable speed pump by the load cycle cold-producing medium.Cooling system also has second refrigerating module, and second refrigerating module has second variable speed pump by the load cycle cold-producing medium.The running under being lower than at full speed of first and second variable speed pumps.In the time can not fully cycling through the cold-producing medium of load for one in first refrigerating module or the secondary cooling module, the speed of the variable speed pump of another in first or second refrigerating module increases to compensate for a refrigerating module.
Cooling system comprises the supply cold-producing medium to a plurality of refrigerating modules of load, and each in a plurality of refrigerating modules has for the supply cold-producing medium gives the variable speed pump of load.Variable speed pump running under being lower than at full speed.When one in a plurality of refrigerating modules can not the ample supply cold-producing medium time, having at least one the speed of variable speed pump in another of a plurality of refrigerating modules of variable-ratio increases to compensate for a plurality of refrigerating modules one.
Provide a plurality of refrigerating modules a kind of comprising for the method that redundant cooling is provided at cooling system.A plurality of refrigerating module cooperations are to pump into cooling fluid at least one heat load.Refrigerating module turns round under variable-ratio.When one in a plurality of refrigerating modules experience was slowed down, the speed of another in a plurality of refrigerating modules increased.When one of a plurality of refrigerating modules experience speedup, the speed of another in a plurality of refrigerating modules reduces.
Provide first refrigerating module a kind of comprising for the method that redundant refrigerating module is provided at cooling system.First refrigerating module provides cooling fluid to heat load.First refrigerating module turns round under variable-ratio.First refrigerating module has first permanent speed, and first permanent speed is lower than at full speed.Second refrigerating module is provided.Second refrigerating module provides cooling fluid to heat load.Second refrigerating module turns round under variable-ratio, and second refrigerating module has second permanent speed, and second permanent speed is lower than at full speed.Be lower than when turning round under its permanent speed separately when one in first refrigerating module or second refrigerating module, increasing another the speed in first refrigerating module or second refrigerating module.When one in first refrigerating module or second refrigerating module experience speedup, reduce the speed of first refrigerating module or second refrigerating module.
Cooling system comprises: elementary refrigerating module.Elementary refrigerating module supply cold-producing medium is given load.When the refrigerant flow that detects elementary refrigerating module was not enough, the secondary cooling module provided additional refrigerant flow to load.
Cooling system comprises: a plurality of elementary refrigerating modules.Elementary refrigerating module supply cold-producing medium is given in a plurality of heat loads separately.The secondary cooling module optionally provide additional refrigerant flow by with detect the load that out of order elementary refrigerating module is associated.
A kind of method that provides redundancy to cool off in cooling system comprises provides the elementary refrigerating module with loop.Elementary refrigerating module provides cooling fluid to heat load.The secondary cooling module is provided, and the running of the time starting secondary cooling module that in elementary refrigerating module, detects fault.The secondary cooling module is inserted the loop, and the secondary cooling module provides cooling fluid to heat load, and the elementary refrigerating module of stopping using.
A kind of method of the Redundant Control for cooling system comprises provides a plurality of elementary refrigerating modules.Elementary refrigerating module passes through heat load circulating refrigerant separately.The secondary cooling module is provided.When detecting fault in an elementary refrigerating module, the secondary cooling module optionally provides the additional load of refrigerant flow by being associated with optional elementary refrigerating module.
Description of drawings
The purpose of accompanying drawing described here only is for optional embodiment rather than all possible embodiment are described, and does not plan to limit the scope of the present disclosure.
Fig. 1 is the schematic diagram that is connected to the primary cooling circuit of cooling water circulation;
Fig. 2 is the schematic diagram with cooling system of the primary cooling circuit that utilizes vapor compression refrigeration system;
Fig. 3 is the schematic diagram according to the cooling system of various embodiment settings;
Fig. 4 is the schematic diagram according to the cooling system of various embodiment settings;
Fig. 5 describes the flow chart that is used for providing in the system with redundant cooling source of for example Fig. 3 and Fig. 4 the process of redundant cooling capacity;
Fig. 6 is the schematic diagram according to the cooling system of another kind of embodiment setting;
Fig. 7 is the flow chart that is described in the process that is used for providing redundant cooling in the system of Fig. 6;
Fig. 8 is the schematic diagram according to the cooling system of another kind of embodiment setting; And
Fig. 9 is the flow chart that is described in the process that is used for providing redundant cooling in the system of Fig. 8.
Run through in the different views of accompanying drawing, corresponding Reference numeral is represented appropriate section.
The specific embodiment
The embodiment that exemplifies is described more fully referring now to accompanying drawing.
Provide the embodiment that exemplifies so that express the scope of the present disclosure up hill and dale and fully to those skilled in the art.Many specific details will be set forth, and for example specific features, equipment and method are with thorough understanding embodiment of the present disclosure.To those skilled in the art, specific details does not need to use, and the embodiment that exemplifies can be specially many multi-form and also should be not combined with restriction the scope of the present disclosure.In the embodiment that some exemplify, be not described in detail well-known process, well-known apparatus structure and well-known technology.
Term only is used for describing the purpose of the special embodiment of exemplifying and not planning to be confined to this as used herein.For example singulative " ", " one " and " each " also can comprise plural form as used herein; Unless context is obviously pointed out.Term " by ... form ", " comprising ", " comprising " and " having " be the meaning that comprises, and specify the existence of feature, integral body, step, operation, element and/or the parts determined, but do not get rid of existence or the increase of one or more other features, integral body, step, operation, element, parts and/or its group.Method step described here, process and operation are not interpreted as must carrying out them in the order of special discussion or explanation, unless clearly determine as the order of carrying out.Also can be understood as and to use other or optional step.
When element or layer relate to " ... on ", " joints ", " connection " or " combination " another element or layer time, can directly exist ... on, engage, connect or be attached to another element or the layer, perhaps can be understood as insertion element or the layer.On the contrary, when an element relate to " ... on ", when " directly engage ", " directly connecting " or " directly in conjunction with " another element or layer, may be interpreted as does not here have insertion element or layer.Be used for to describe other words that concern between the element should think same mode (for example, " and ... between " with respect to " and directly exist ... between ", " vicinity " is with respect to " directly being close to " etc.).As using, term " and/or " comprise one or more Related products of listing arbitrarily and all combinations.
Though term first, second, third, etc. etc. can use to describe different elements, parts, zone, layer and/or part at this, these elements, parts, zone, layer and/or part should be not limited to these terms.These terms can be only be used for from another zone, layer or part are distinguished element, parts, zone, layer or a part.Term for example " first ", " second " and other digital terms when when this uses, do not mean that the order or order, unless obviously point out in the context.Therefore, the instruction that first element of discussing below, parts, zone, layer or part may be called second element, parts, zone, layer or partly not break away from the embodiment that exemplifies.
The space correlation term, for example " inside ", " outside ", " ... under ", " ... following ", " lower ", " in ... top ", " top " and similar term, can this easily operation instruction to describe element exemplifying in the drawings or the relation of feature and another element or feature.The space correlation term can be used for comprising the different directions of the device that uses or operate except the direction of describing in the drawings.For example, if device in the drawings rotation, element be described as " ... following " or " ... under " another element or feature then will be orientated " in ... top " another element or feature.The term that therefore, exemplifies " ... following " can comprise top and following both direction.Device can with diverse ways orientation (revolve turn 90 degrees or in other direction) and as used herein the space correlation descriptor therefore obtain explaining.
Fig. 3 describes the schematic diagram of the pump refrigerant cooling system 100 that arranges according to various embodiment.Pump refrigerant cooling system 100 comprises a pair of pump unit 120a, 120b.Pump unit 120a, 120b provide the working fluid that is pumped to load 122.Load 122 is placed in the environment that will be cooled, for example data room.In some occasions, can use Reference numeral to describe n element jointly and need not to use a, b......n.Further, running through specification will use identical Reference numeral to describe similar elements.In different structure, load 122 can comprise a plurality of loads 122, is referred to as load 122.
Each pump unit 120 comprises first pump 124 and second pump 126, and it is pumping working fluid check-valves 132,134 extremely separately under high pressure.Pump 124,126 can be arranged on first, in the redundancy structure.Optionally, pump 124,126 can be arranged under the output pressure cooperation accommodating fluid and fluid and flows through separately check-valves 132,134 to export pipeline 136.Pump 124,126 can be controlled be used to redundant and operation cooperation are provided.
Fluid by export pipeline 136 pumpings is used in load 122.Load 122 can be taked many structures, comprises the structure of the evaporimeter 30 that is similar to Fig. 1 and 2.Load 122 is placed on to be wanted to remove in the environment of heat, and load 122 is transmitted heat and given the fluid that passes through export pipeline 136 pumpings in this environment.Fluid from export pipeline 136 enters load 122 and leave load 122 at elevated temperatures in pipeline 140 in first temperature.Pumping also can become gas phase from liquid phase by the fluid of load 122.The pipeline 140 that is commonly referred to suction line 140 makes working fluid return pump unit 120.
Fluid in suction line 140 is input to condenser 138.Working fluid under the temperature that condenser 138 is received in first, raise and discharge the output fluid of heat to the temperature that reduces in the working fluid.The fluid of condenser 138 of flowing through becomes liquid phase from gas phase.The fluid of exporting under the temperature that reduces is output the return line 144 by inputing to receiver 142.Receiver 142 stores the working fluid that uses by pump unit 120.Receiver 142 returns working fluid to separately pump 124,126 by receiver export pipeline 143.Bypass line 145 bypass receivers are so that fluid flows directly to receiver export pipeline 143 from the outlet of condenser 138, thus bypass receiver 142.Receiver export pipeline 143 provides working fluid to pump 124,126 by pump intake pipeline 148,150 separately.Controller 146 connects each pump unit 120, and sends and receive from and arrive induction and the control signal of each main pump unit 120.
In operation, pump unit 120a, 120b separately each provide about 50% required refrigerant flow to load 122.When a kind of situation takes place, just provide when being less than predetermined capacity (for example 50%) when any of pump unit 120a or 120b, another pump unit 120a, 120b can control to increase output by controller 146.Can increase output by the output that increases other pump unit 120a, 120b and give load 122 to keep sufficient fluid flow.When determining previous being provided the pump unit that is less than full capacity and returning online (online) fully of determining, the output of each pump unit 120a, 120b can be returned scheduled operation, and for example 50% of full load.
Fig. 4 has described the schematic diagram of the pump refrigerant cooling system 200 that arranges according to various embodiment.Fig. 4 be arranged to similar to above-mentioned Fig. 3, but comprise more than two pump unit 120.Pump refrigerant cooling system 200 comprises a plurality of backing pumps unit 120a, 120b......120n.Each pump unit 120a, 120b......120n provide the working fluid that is pumped to load 122 or a plurality of loads that are arranged side by side 122.Load 122 is placed in the environment that will be cooled, for example data room.Should be noted that n can be any positive integer and represent the optional quantity of similar setting element in the drawings.For example, pump unit 120a, 120b......120n refer to N pump unit.The quantity of pump unit can change according to the special enforcement of pump refrigerant cooling system 200 described here.Adopt the numbering of this convention to describe other similar units.In some cases, n pump unit can adopt the common description of Reference numeral rather than a, b......n.
The pump refrigerant cooling system 100 of Fig. 3 and Fig. 4,200 operation will be described.The pump refrigerant cooling system 200 of Fig. 4 is similar to the operation of the pump refrigerant cooling system 100 of Fig. 3.Especially, 200 operations of pump refrigerant cooling system are similar, and just it has a plurality of pumps unit 120, rather than a pair of pump unit of describing in Fig. 3 120.
In operation, pump unit 120 is being lower than a part of fluid flow that turns round and offer load 122 to share under the full capacity.In various structures, distribute and to equate.In another structure, distributing does not need to equate.When in N the pump unit any stopped using by controller 146, controller 146 also can increase the individual pump of residue (N-1) unit 120 export to load 122 with the refrigerant flow that keeps abundance by load 122.As unrestriced example, if N=3, and refrigerant flow five equilibrium between three pump unit 120, then each pump unit uses 33.33% of full refrigerant flow to give load 122.If any in N unit stopped using by controller 146, then remaining (N-1) individual unit provides the residual refrigerant flow to load 122.In this case, each remaining (N-1) individual unit will provide total refrigerant flow of about 50% to load 122.In another unrestriced example, if N=5, then each backing pump unit 120 can provide total refrigerant flow 20% to load 122.If controller 146 is stopped using a pump unit 120, then remaining four pump unit provide 25% of total refrigerant flow.When example described here is directed when each the pump unit 120 that equates refrigerant flow is provided, those skilled in the art will think that pump unit 120 can provide unequal flow, as long as pump unit 120 keeps the online refrigerant flow of abundance that just can provide to load 122.
Fig. 5 has described the block diagram that is used for providing redundant pump unit in the pump refrigerant cooling system of Fig. 3 and Fig. 4.Process has started from motion block 151 and has proceeded to determining piece 152.Determine piece 152 determines whether detect fault in a pump unit 120.If do not detect fault, then control continues to get back to the beginning that determines piece 152, and it continues monitoring and whether detect fault in the pump unit.If detect failure condition in the pump unit, then control proceeds to piece 154, provides the speed of signal with increase (N-1) individual pump unit at this controller 146, rather than the speed of the pump unit of the situation that breaks down.In case what (N-1) output of individual pump unit 120 increased is enough abundant, controls and proceeds to piece 156.At piece 156, controller 146 is regulated the output of pump unit 120 of the pump unit 120 of the situation that breaks down.Controller 146 can reduce the required output in pump unit 120 under the fault condition or the pump unit 120 under the disabling faulty condition.Control proceeds to piece 158 then, and the indication of normal operation is got back in the pump unit 120 under its monitor for faults condition.If normal operation is not got back in the pump unit under the fault condition, then control continues to get back to the beginning that determines piece 158.When the pump unit under definite operational failure condition fully, control proceeds to piece 160.At piece 160, controller 146 produces control signal the pump unit 120 under the previous fault condition is returned to its normal operation output.Control proceeds to piece 162 then.At piece 162, controller 146 reduces the speed of (N-1) individual pump unit 120, and its speed is previous increasing, so that the reduction that the pump unit 120 under the compensate for failed condition before had been deactivated or had exported.Control proceeds to piece 164, terminal procedure then.
Fig. 6 has described the cooling system 300 that arranges according to various embodiment.Cooling system 300 comprises pump unit 120a, 120b......120n, and it is arranged to previously in the pump unit 120 of this description similar.The a pair of refrigerating module that is arranged side by side or load 122a, 122b that pump unit 120 provides fluid to flow to illustrate.The structure of Fig. 6 is pointed to a kind of system, and it comprises the pump unit that turns round as the stand-by pump unit, when one or more must being deactivated in other (N-1) individual pump unit, and the starting up standby pump unit.When other pump unit was deactivated by controller 146, stand-by pump unit 120 became startup and inserts the loop then.
Fig. 6 is arranged to similar to above-mentioned various embodiment.Fig. 6 also comprises and pump unit 120a separately, inlet valve 170a, the 170b......170n that 120b......120n is communicated with.Fig. 6 also comprises and pump unit 120a separately, outlet valve 172a, the 172b......172n that 120b......120n is communicated with.Inlet valve 170 and outlet valve 172 actings in conjunction make the mobile pump unit 120 that can and can not pass in and out separately of fluid.The pump unit 120n of N pump unit is as the stand-by pump unit and when one or more other (N-1) individual pump unit 120 are deactivated, and the starting up standby pump unit flows so that the mobile fluid of fluid that replaces one or more other (N-1) individual pump unit 120 to be provided.
Fig. 7 has described the block diagram of running of the pump refrigerant cooling system 300 of Fig. 6.Control has started from motion block 180 and has proceeded to determining piece 182.Determining piece 182, the other parts of controller 146 or system 300 determine whether detect failure condition in pump unit 120.If do not detect fault, then control continues to get back to decision piece 182.If the fault of detecting, then control proceeds to piece 184.At piece 184, in this embodiment, controller 146 is with the online fluid flow that makes that stand-by pump unit 120n can provide pressurization of stand-by pump unit 120n.Control proceeds to piece 186 then, and controller 146 is brought stand-by pump unit 120n into loop by opening inlet valve 170n and outlet valve 172n.This can make stand-by pump unit 120n provide fluid flow to load 122.Control proceeds to piece 188 then, removes pump unit 120 under the fault condition at this from the loop.Thereby controller 146 removes fault pump unit by the pump unit 120 of cutting out its corresponding inlet valve 170 and outlet valve 172 and removing under the fault condition from the loop.Then control proceeds to and determines piece 190.Determining piece 190, controller 146 determines whether the pump unit under the fault condition determines to be turned round fully.If the pump unit of stopping using is not turned round fully, then control turns back to and determines piece 190.If the pump unit under the fault condition is determined fully running, then control proceeds to piece 192, and controller 146 will be the pump unit 120 of running is online again fully makes fluid flow that it can provide cooling fluid to load 122.In case the pump unit under the fault condition is by online, then control proceeds to piece 194.At piece 194, the pump unit under the fault condition is placed into the loop so that fluid flows into load 122 by opening its inlet valve 170 and outlet valve 172 separately.Control proceeds to piece 196 then.At piece 196, controller 146 removes stand-by pump unit 120n by cutting out inlet valve 170n and outlet valve 172n from the loop.Control proceeds to piece 198 then, at piece 198, and controller 146 inactive stand-by pump unit 120.Control proceeds to end block 199 then.
Fig. 8 has described the schematic diagram of the pump refrigerant cooling system 400 with redundant pump unit.As described above, pump refrigerant cooling system 400 comprises a plurality of main or backing pump unit 120a, 120b......120n.Each backing pump unit 120a, 120......120n provide the working fluid that is pumped to load 122a, 122b......122n.Each load 122a, 122b......122n are placed in the environment with cooler environment, for example data room.Should be noted that n can be any positive integer and represent the optional quantity of similar setting element in the drawings.For example, pump unit 120a, 120b......120n refer to N pump unit.Also as described above, those skilled in the art will think that the quantity of pump unit can change according to the special enforcement of pump refrigerant cooling system 400 described here.
Each main pump unit 120 comprises first pump 124 and second pump 126, and it is pumped to working fluid check-valves (check valve) 132,134 separately under elevated pressure.Pump 124,126 can be arranged on first, in the redundancy structure.Optionally, pump 124,126 can be arranged under the output pressure cooperation accommodating fluid and fluid and flows through separately check-valves 132,134 to export pipeline 136.Pump 124,126 can be controlled to provide redundant and operation cooperation.
Pumping is supplied to load 122 by the fluid of export pipeline 136.Load 122 can be taked many structures, comprises the structure similar to the evaporimeter 30 of Fig. 1 and Fig. 2.Load 122 is placed in the environment, and in this hope is to shift heat to the fluid of pumping by export pipeline 136 from the environment that load 122 is arranged in by shifting heat.Fluid from export pipeline 136 is entering load 122 and leaving load 122 at elevated temperatures in pipeline 140 under first temperature.Pumping also can become gas phase from liquid phase by the fluid of load 122.The pipeline 140 that is commonly referred to suction line 140 returns working fluid to main pump unit 120.
With the input of the fluid in the suction line 140 condenser 138.Condenser 138 receives first, promote the working fluid under the high temperature and the heat in the working fluid passed at the output fluid that reduces under the temperature.The fluid that flows through condenser 138 becomes liquid phase from gas phase.The fluid output of exporting under the reduction temperature is by the return line 144 of input sink 142.Receiver 142 stores the working fluid that uses by pump unit 120.Receiver 142 is sent working fluid back to separately pump 124,126 by receiver export pipeline 143.Bypass line 145 bypass receivers are so that fluid flows directly to receiver export pipeline 143 from the outlet of condenser 138, thus bypass receiver 142.Receiver export pipeline 143 provides working fluid to pump 124,126 by pump intake pipeline 148,150 separately.
Except main pump unit 120a, 120b......120n, redundant or standby pump unit 120 ' is included in the pump refrigerant cooling system 400 of Fig. 8.If any one of main pump unit 120a, 120b......120n stopped using, then Rong Yu pump unit 120 ' provides working fluid under certain pressure.In this manner, it is redundant to other pump unit that pump unit 120 ' provides, thereby keep the uptime and provide refrigerating function to any load 122 relevant with the main pump unit of stopping using.
Redundant or standby pump unit 120 ' is configured to similar to above-described pump unit 120.Pump unit 120 ' also comprises standby liquid line 136 ' and steam pipe line 140 '.Fluid output from liquid active redundancy pipeline 136 ' can flow to each load 122a, 122b......122n.Flow through among standby outlet valve 208a, the 208b......208n one from the fluid of liquid active redundancy pipeline 136 '.Reserve liquid fluid line 210a, 210b......210n connect standby outlet valve 208a, 208b......208n separately and separately pump unit 120a of replacement, the fluid of 120b......120n are provided.Outlet valve 218a, 218b......218n separately can close to prevent that the fluid flow stream in reserve liquid fluid line 210a, 210b......210n from going into pump unit 120a, 120b......120n separately.Steam output from load 122a, 122b......122n can turn back to pump unit 120 ' by off-stream pipe line 214a, 214b......214n separately.Off-stream pipe line 214a, 214b......214n connect standby inlet valve 212a, 212b......212n separately.The relevant steam that prevents with separately pump unit 120a, 120b......120n of inlet valve 220a, 220b......220n flows into optional pump unit 120a, 120b......120n separately.In order to realize the control to pump refrigerant cooling system 400, controller 146 transmissions and reception monitoring and control signal are to the selectable unit (SU) of pump refrigerant cooling system 400.
To the operation of the system of Fig. 8 be described.When main pump unit 120 has been stopped using or must have been stopped using owing to the various operating conditions of main pump unit 120, the main pump unit that redundant pump unit 120 ' starts to replace stopping using.For example, if main pump unit 120a need stop using, then Rong Yu pump unit 120 ' will start to provide pump action to the main pump unit 120a that stops using.When this happens, redundant pump unit 120 ' substitutes the cooling circuit that enters from load 122a to provide fluid flow to load 122a.This operation by valve 220a, 218a, 212a and 208a realizes.
For example, for the pump unit 120 ' with redundancy inserts the loop to provide fluid to load 122a, inlet valve 212a and outlet valve 208a open to allow fluid to flow into and efflux pump unit 120 '.Similarly, inlet valve 220a and outlet valve 218b close pump unit 120a to be shifted out the loop to provide fluid flow to load 122a.In case determine to reset main pump unit 120a, therefore need stopping using of redundant pump unit 120 ', will above-described similar process takes place.
Fig. 9 describes the block diagram of operation of the pump refrigerant cooling system 400 of Fig. 8.Control has started from motion block 230 and has proceeded to determining piece 232.Determining piece 232, the other parts of controller 146 or system determine whether detect failure condition in the pump unit.If do not detect failure condition, then control proceeds to piece 234.At piece 234, controller 146 should example in standby pump unit 120 ' the online fluid flow that makes that standby pump unit 120 ' can provide pressurization.Control proceeds to piece 236 then, and its middle controller 146 is put into standby pump unit 120 ' cooling circuit of the pump unit 120 under the fault condition.This situation takes place by inlet valve 212 and the outlet valve of opening separately 208.This makes pump unit 120 ' can provide fluid flow to load 122.Control proceeds to piece 238 then, and wherein the pump unit 120 under the fault condition removes from the loop.Thereby controller 146 removes the pump unit under the fault condition by the pump unit 120 of cutting out its corresponding inlet valve 220 and outlet valve 218 and removing under the fault condition from its cooling circuit separately.
Control proceeds to and determines piece 240.Determining piece 240, the other parts of controller 146 or system determine when that the pump unit under the fault condition is determined running fully.If the pump unit under the fault condition is running fully not, then control is returned and is determined piece 240.If the pump unit under the fault condition turns round fully, then control proceeds to piece 242, and controller 146 will be fully the pump unit 120 of running again online make it can insert again its cooling circuit separately with fluid flow that cooling fluid is provided to load 122.In case the pump unit under the fault condition is by online, then control proceeds to piece 244.At piece 244, the pump unit under the fault condition is by opening its inlet valve 220 and outlet valve 218 cooling circuit separately of being placed into it separately.Control proceeds to piece 246 then.At piece 226, controller 146 will remove from the stand-by pump unit 120 ' in cooling loop by standby inlet valve 212 and the outlet valve 208 of cutting out separately.Control proceeds to piece 248 then, and it is with the pump unit 120 ' off line (offline) of redundancy.Control proceeds to end block 250 then.
The above-mentioned explanation of embodiment has been provided for illustration and illustrative purposes.Do not plan at large to describe or limit the present invention.The discrete component of specific embodiments or feature are not limited to specific embodiments usually, and be still advantageously interchangeable and can be used among the optional embodiment, even without clearly illustrating or describing.Identical also can change in many modes.This change not conduct deviates from the present invention, and all these changes are all planned to be included in the scope of the present invention.
Claims (53)
1. cooling system comprises:
First refrigerating module, first refrigerating module with first variable speed pump cycles through load with cold-producing medium; With
Second refrigerating module, second refrigerating module with second variable speed pump cycles through load with cold-producing medium,
Wherein first and second variable speed pumps running under being lower than at full speed, and when a refrigerating module in first refrigerating module or second refrigerating module can not fully cycle through load with cold-producing medium, the speed of the variable speed pump of another refrigerating module in first or second refrigerating module increased to compensate to a described refrigerating module.
2. according to the cooling system of claim 1, wherein pump is supplied cold-producing medium and is given load under first temperature, first refrigerating module further comprises for the condenser that receives from the cold-producing medium of load, receives temperature from the cold-producing medium place of load than the first temperature height.
3. according to the cooling system of claim 2, further comprise liquid receiver, it receives the cold-producing medium that is in liquid condition from condenser.
4. according to the cooling system of claim 2, wherein first and second variable speed pumps turn round under the state up to half capacity under the normal mode of running.
5. according to the cooling system of claim 1, further comprise liquid receiver, it receives the cold-producing medium that is in liquid condition from condenser.
6. according to the cooling system of claim 1, wherein first and second variable speed pumps turn round under the state up to half capacity under the normal mode of running.
7. according to the cooling system of claim 6, wherein pump is supplied cold-producing medium and is given load under first temperature, first refrigerating module further comprises for the condenser that receives from the cold-producing medium of load, receives temperature from the cold-producing medium place of load than the first temperature height.
8. according to the cooling system of claim 7, wherein first and second variable speed pumps turn round under the state up to half capacity under the normal mode of running.
9. according to the cooling system of claim 1, wherein load comprises single load or a plurality of load.
10. cooling system comprises:
The supply cold-producing medium is given a plurality of refrigerating modules of load, and each refrigerating module in a plurality of refrigerating modules has for the supply cold-producing medium gives the variable speed pump of load,
Wherein variable speed pump running under being lower than at full speed, and when a refrigerating module in a plurality of refrigerating modules can not the ample supply cold-producing medium, running is to compensate the described refrigerating module in a plurality of refrigerating modules under the speed that increases for the variable speed pump of other refrigerating modules of at least one of a plurality of refrigerating modules, and wherein each variable speed pump has variable velocity.
11. the cooling system according to claim 10, wherein pump is supplied cold-producing medium and is given load under first temperature, at least one refrigerating module in a plurality of refrigerating modules further comprises for the condenser that receives from the cold-producing medium of load, receives temperature from the cold-producing medium place of load than the first temperature height.
12. according to the cooling system of claim 11, wherein at least one refrigerating module in a plurality of refrigerating modules further comprises liquid receiver, it receives the cold-producing medium that is in liquid condition from condenser.
13. according to the cooling system of claim 11, wherein variable speed pump turns round under the state that is being less than full capacity under the normal mode of running.
14. according to the cooling system of claim 11, wherein at least one refrigerating module in a plurality of refrigerating modules further comprises liquid receiver, it receives the cold-producing medium that is in liquid condition from condenser.
15. according to the cooling system of claim 10, wherein variable speed pump turns round under the state that is being less than full capacity under the normal mode of running.
16. the cooling system according to claim 15, wherein pump is supplied cold-producing medium and is further comprised for the condenser that receives from the cold-producing medium of load at least one refrigerating module in load and a plurality of refrigerating module under first temperature, receives temperature from the cold-producing medium place of load than the first temperature height.
17. according to the cooling system of claim 16, wherein variable speed pump turns round under the state up to half capacity under the normal mode of running.
18. according to the cooling system of claim 10, wherein load comprises single load or a plurality of load.
19. according to the cooling system of claim 10, wherein variable speed pump is turning round under according to a capacity with the ratio of the quantity of the refrigerating module with variable speed pump.
20. a method that is used for providing at cooling system redundant cooling comprises:
A plurality of refrigerating modules are provided, and a plurality of refrigerating modules are pumped to cooling fluid at least one heat load collaboratively, and wherein refrigerating module turns round under variable-ratio;
When a refrigerating module experience in a plurality of refrigerating modules is slowed down, increase the speed of another refrigerating module in a plurality of refrigerating modules; And
When refrigerating module experience speedup in a plurality of refrigerating modules, reduce the speed of another refrigerating module in a plurality of refrigerating modules.
21. according to the method for claim 20, further comprise a plurality of refrigerating modules of monitoring with the detection failure situation, and along with another refrigerating module indication fault situation in a plurality of refrigerating modules, increase the speed of a refrigerating module in a plurality of refrigerating modules.
22. according to the method for claim 21, further comprise along with the indication fault situation continued is monitored another refrigerating module in a plurality of refrigerating modules, to determine when another refrigerating module indication fault situation no longer in a plurality of refrigerating modules.
23. according to the method for claim 22, wherein when another refrigerating module in a plurality of refrigerating modules no longer during the indication fault situation, a plurality of refrigerating modules are got back to normal speed running separately.
24. a method that is used for providing at cooling system redundant cooling comprises:
First refrigerating module is provided, and first refrigerating module provides cooling fluid to heat load, and wherein first refrigerating module turns round under variable velocity, and first refrigerating module has first permanent speed, and first permanent speed is lower than at full speed;
Second refrigerating module is provided, and second refrigerating module provides cooling fluid to heat load, and wherein second refrigerating module turns round under variable velocity, and second refrigerating module has second permanent speed, and second permanent speed is lower than at full speed;
When the speed of a refrigerating module running in first refrigerating module or second refrigerating module is lower than its permanent speed, increase the speed of another refrigerating module in first refrigerating module or second refrigerating module; And
When refrigerating module experience speedup in first refrigerating module or second refrigerating module, reduce the speed of another refrigerating module in first refrigerating module or second refrigerating module.
25. according to the method for claim 24, comprise that further monitoring first refrigerating module and second refrigerating module are with the detection failure situation.
26. the method according to claim 25, continue monitoring first refrigerating module and second refrigerating module after further being included in the detection failure situation, and when no longer detecting failure condition, make first refrigerating module and second refrigerating module get back to separately first permanent speed and second permanent speed.
27. a cooling system comprises:
Elementary refrigerating module, elementary refrigerating module supply cold-producing medium is given load; With
The secondary cooling module, when the refrigerant flow that detects elementary refrigerating module was not enough, the secondary cooling module provided additional refrigerant flow to load.
28. according to the cooling system of claim 27, wherein elementary refrigerating module further comprises:
First pump that is used for the supply cold-producing medium, first pump are supplied the cold-producing medium of first temperature and are given load; With
Be used for to receive first condenser from the cold-producing medium of load, the temperature at the cold-producing medium place that receives by first condenser is than the first temperature height.
29. according to the cooling system of claim 28, wherein the secondary cooling module further comprises:
Second pump that is used for the supply cold-producing medium, second pump are supplied the cold-producing medium of first temperature and are given load; With
Be used for to receive second condenser from the cold-producing medium of load, the temperature at the cold-producing medium place that receives by second condenser is than the first temperature height.
30. the cooling system according to claim 29 further comprises:
The inlet valve that is used for the fluid flow of control between a refrigerating module of the entrance of load and elementary refrigerating module and secondary cooling module; With
The outlet valve that is used for the fluid flow of control between a refrigerating module of the outlet of load and elementary refrigerating module and secondary cooling module.
31. the cooling system according to claim 27 further comprises:
The inlet valve that is used for the fluid flow of control between a refrigerating module of the entrance of load and elementary refrigerating module and secondary cooling module; With
The outlet valve that is used for the fluid flow of control between a refrigerating module of the outlet of load and elementary refrigerating module and secondary cooling module.
32. a cooling system comprises:
A plurality of elementary refrigerating modules, elementary refrigerating module is by separately a heat load circulating refrigerant in a plurality of heat loads; With
The secondary cooling module, the secondary cooling module by with detect load that out of order elementary refrigerating module is associated additional refrigerant flow selectively be provided.
33. according to the cooling system of claim 32, wherein each elementary refrigerating module further comprises:
A plurality of first pumps that are used for circulating refrigerant, a plurality of first pumps are supplied cold-producing medium under first temperature and are given the load separately that is associated with separately elementary refrigerating module; With
Be used for to receive a plurality of first condensers from the cold-producing medium of the load separately that is associated with separately elementary refrigerating module, the temperature at the cold-producing medium place that the condenser by separately receives is than the first temperature height.
34. according to the cooling system of claim 33, wherein the secondary cooling module further comprises:
Second pump that is used for the supply cold-producing medium, second pump are supplied cold-producing medium under first temperature and are given and detect the load that out of order elementary refrigerating module is associated; With
Be used for to receive from second condenser of the cold-producing medium that detects the load that out of order elementary refrigerating module is associated, the temperature that the cold-producing medium that receives by second condenser has is than the first temperature height.
35. the cooling system according to claim 34 further comprises:
The a plurality of inlet valves that are associated with separately elementary refrigerating module, it is used for controlling the entrance of load separately and elementary refrigerating module separately and the fluid flow between the secondary cooling module; With
The a plurality of outlet valves that are associated with separately elementary refrigerating module, it is used for controlling the outlet of load separately and elementary refrigerating module separately and the fluid flow between the secondary cooling module.
36. a method that is used for providing at cooling system redundant cooling comprises:
Elementary refrigerating module with loop is provided, and elementary refrigerating module provides cooling fluid to heat load;
The secondary cooling module is provided;
When in elementary refrigerating module, detecting fault, the running of beginning secondary cooling module;
The secondary cooling module is inserted the loop, and the secondary cooling module provides cooling fluid to heat load; And
Inactive elementary refrigerating module.
37. according to the method for claim 36, further comprise from the loop, removing elementary refrigerating module.
38. according to the method for claim 36, further comprise allowing cooling system get back to normal operation, described allow cooling system get back to and run well comprise:
When no longer detecting fault, begin the running of elementary refrigerating module;
Elementary refrigerating module is inserted for the loop of cooling fluid to heat load is provided; And
Inactive redundant refrigerating module.
39. according to the method for claim 38, further comprise from the loop, removing redundant refrigerating module.
40. the method for the Redundant Control that cooling system is provided comprises:
A plurality of elementary refrigerating modules are provided, and elementary refrigerating module passes through heat load circulating refrigerant separately; And
The secondary cooling module is provided, and when detecting fault in an elementary refrigerating module, the secondary cooling module selectively provides additional refrigerant flow by the load that is associated with separately elementary refrigerating module.
41. according to the method for claim 40, further comprise from loop that an elementary refrigerating module is associated remove an elementary refrigerating module.
42. the method according to claim 40 further comprises:
When in an elementary refrigerating module, detecting fault, the running of beginning secondary cooling module;
The secondary cooling module is inserted in the loop of an elementary refrigerating module, the secondary cooling module provides cooling fluid to heat load; And
Inactive elementary refrigerating module.
43. according to the method for claim 42, further comprise from the loop, removing an elementary refrigerating module.
44. according to the method for claim 42, further comprise allowing cooling system get back to normal operation, described allow cooling system get back to and run well comprise:
When no longer detecting fault, the running of an elementary refrigerating module of beginning;
An elementary refrigerating module is inserted for the loop of cooling fluid to heat load is provided; And
Inactive secondary cooling module.
45. according to the method for claim 44, further comprise from the loop, removing the secondary cooling module.
46. the method according to claim 42 further comprises:
The cold-producing medium of supply under first temperature given the load that is associated with separately elementary refrigerating module; And
Reception is from the cold-producing medium of the load that is associated with separately elementary refrigerating module, and the temperature at the cold-producing medium place that receives by first condenser is than the first temperature height.
47. the method according to claim 42 further comprises:
Control is at the entrance of the load separately of an elementary refrigerating module that detects fault and the fluid flow between the secondary cooling module; And
Control is at the outlet of the load separately of an elementary refrigerating module that detects fault and the fluid flow between the secondary cooling module.
48. the method according to claim 40 further comprises:
The cold-producing medium of supply under first temperature given and detected the load that out of order elementary refrigerating module is associated; And
Reception from the cold-producing medium that detects the load that out of order elementary refrigerating module is associated, from the temperature at the cold-producing medium place that load receives than the first temperature height.
49. according to the method for claim 48, comprise that further reception is from the cold-producing medium under the liquid condition of being in of second condenser.
50. according to the method for claim 48, further receive the cold-producing medium under the liquid condition of being in from second condenser.
51. the method according to claim 40 further comprises:
The cold-producing medium of supply under first temperature given the load that is associated with separately elementary refrigerating module; And
Reception is from the cold-producing medium of the load that is associated with separately elementary refrigerating module, and the temperature at the cold-producing medium place that receives by first condenser is than the first temperature height.
52. the method according to claim 40 further comprises:
The cold-producing medium of supply under first temperature given and detected the load that out of order elementary refrigerating module is associated; And
Reception from the cold-producing medium that detects the load that out of order elementary refrigerating module is associated, from the temperature at the cold-producing medium place that load receives than the first temperature height.
53. the method according to claim 40 further comprises:
Control the entrance of the load separately that has detected an out of order elementary refrigerating module and the fluid flow between the secondary cooling module; And
Control the outlet of the load separately that has detected an out of order elementary refrigerating module and the fluid flow between the secondary cooling module.
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| CN201910682635.7A CN110375451A (en) | 2011-12-28 | 2012-12-27 | Improved cooling system for high density heat load |
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| US201161580686P | 2011-12-28 | 2011-12-28 | |
| US61/580,686 | 2011-12-28 | ||
| US13/723,661 | 2012-12-21 | ||
| US13/723,661 US9706685B2 (en) | 2011-12-28 | 2012-12-21 | Cooling system for high density heat loads |
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