CN103743145B - Dual-energy source indirect refrigeration system in parallel and method - Google Patents
Dual-energy source indirect refrigeration system in parallel and method Download PDFInfo
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- CN103743145B CN103743145B CN201410028591.3A CN201410028591A CN103743145B CN 103743145 B CN103743145 B CN 103743145B CN 201410028591 A CN201410028591 A CN 201410028591A CN 103743145 B CN103743145 B CN 103743145B
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Abstract
Dual-energy source indirect refrigeration system in parallel and method, belong to a kind of refrigeration system energy-saving field being applicable to food cold processing and cryopreservation.Solve existing natural cold-energy cannot be applied in refrigeration system, cause the problem that refrigeration system power consumption is large.The present invention, on the basis of existing refrigeration system, adds cryogenic fluid pump and outdoor heat exchanger; Plate type heat exchanger in existing refrigeration system and an outdoor heat exchanger of connecting between gas-liquid separator; It also comprises temperature controller, No. 1 magnetic valve and No. 2 magnetic valves, No. 1 magnetic valve is arranged between the second output channel outlet of plate type heat exchanger and the entrance of refrigerated medium pump, No. 2 magnetic valves are arranged between the second output channel outlet of plate type heat exchanger and the first input channel entrance of gas-liquid separator, temperature controller is for gathering outdoor temperature, and the control end to the control end of No. 1 magnetic valve and No. 2 magnetic valves that transmits control signal respectively.It is for food cold processing and cryopreservation.
Description
Technical field
The invention belongs to a kind of refrigeration system energy-saving field being applicable to food cold processing and cryopreservation.
Background technology
Because refrigeration system can provide the cold environment of different temperatures, therefore, be widely used in the process of food, medicine etc.Refrigeration system power consumption is large, and especially as the compressor driving kind of refrigeration cycle, its power consumption is given prominence to.The power consumption of single compressor is little of tens kilowatts, large to hundreds of kilowatt, makes the power consumption of compressor account for more than 80% of whole refrigeration system power consumption.
Northern area is very long for winter, and outdoor temperature is low.Widely, and this cold energy resource is clean, pollution-free for cold energy resource contained in Cryogenic air.According to temperature and the energy characteristics in northern area winter, finding the Application way of suitable cold energy resource, is the important topic in current refrigeration energy saving of system field.
The refrigeration system that domestic food cold working and cryopreservation link adopt is generally traditional electric refrigeration system, relies on the great compressor of power consumption to be driving force, produces low temperature environment, meets cold worked temperature requirement.This refrigeration system is different according to cold worked ability, and the power consumption of the compressor adopted is also different, and tens kilowatts at least, hundreds of kilowatt at most, therefore power consumption is very large.In addition, to winter outdoor Cryogenic air utilization mainly direct by the cold air drawing-in system of outdoor, this method is only applied to the link of cryopreservation, and have certain limitation.The first, the cold air amount introduced is uncontrollable, and cause the temperature of storage environment height indefinite, off-design temperature is excessive, causes the change of preserved object quality; The second, outdoor cold air generally relies on the approach such as door capable of being opened, ventilation shaft to be introduced into refrigerator, therefore cold skewness, and the as easy as rolling off a log local temperature that causes is too low, produces harmful effect to preserved object quality.
Summary of the invention
The present invention cannot be applied in refrigeration system to solve existing natural cold-energy, causes the problem that refrigeration system power consumption is large, the invention provides a kind of Dual-energy source indirect refrigeration system in parallel and method.
Dual-energy source indirect refrigeration system in parallel, it comprises compressor, condenser, gas-liquid separator, plate type heat exchanger, choke valve and water pump, and it also comprises refrigerated medium pump and outdoor heat exchanger;
Second output channel outlet of described plate type heat exchanger is communicated with the entrance of refrigerated medium pump, this cold-producing medium delivery side of pump is communicated with the entrance of outdoor heat exchanger, first input channel entrance of gas-liquid separator and the outlet of outdoor heat exchanger, first output channel outlet of described gas-liquid separator is communicated with the input channel entrance of condenser by compressor, the output channel outlet of condenser is communicated with the second input channel entrance of gas-liquid separator through choke valve, second output channel outlet of gas-liquid separator is communicated with the first input channel entrance of plate type heat exchanger, first output channel outlet of plate type heat exchanger is communicated with the entrance of water pump, this water delivery side of pump is communicated with the refrigeration piping entrance of refrigeration object, the refrigeration piping outlet of this refrigeration object is communicated with the second input channel entrance of plate type heat exchanger.
Described Dual-energy source indirect refrigeration system in parallel, it also comprises temperature controller, No. 1 magnetic valve and No. 2 magnetic valves,
No. 1 described magnetic valve is arranged between the second output channel outlet of plate type heat exchanger and the entrance of refrigerated medium pump,
No. 2 magnetic valves are arranged between the second output channel outlet of plate type heat exchanger and the first input channel entrance of gas-liquid separator,
Described temperature controller is for gathering outdoor temperature, and the control end to the control end of No. 1 magnetic valve and No. 2 magnetic valves that transmits control signal respectively.
Dual-energy source indirect refrigeration method in parallel, the method realizes based on following refrigeration system, and this refrigeration system comprises compressor, condenser, gas-liquid separator, plate type heat exchanger, outdoor heat exchanger, choke valve, water pump, temperature controller, refrigerated medium pump, No. 1 magnetic valve and No. 2 magnetic valves;
Second output channel outlet of described plate type heat exchanger is communicated with the entrance of refrigerated medium pump through No. 2 magnetic valves, this cold-producing medium delivery side of pump is communicated with the entrance of outdoor heat exchanger, second output channel outlet of described plate type heat exchanger is also communicated with the first input channel entrance of gas-liquid separator by No. 1 magnetic valve, and the outlet of the first input channel entrance of this gas-liquid separator and outdoor heat exchanger, first output channel outlet of described gas-liquid separator is communicated with the input channel entrance of condenser by compressor, the output channel outlet of condenser is communicated with the second input channel entrance of gas-liquid separator through choke valve, second output channel outlet of gas-liquid separator is communicated with the first input channel entrance of plate type heat exchanger, first output channel outlet of plate type heat exchanger is communicated with the entrance of water pump, this water delivery side of pump is communicated with the refrigeration piping entrance of refrigeration object, the refrigeration piping outlet of this refrigeration object is communicated with the second input channel entrance of plate type heat exchanger,
Described temperature controller is for gathering outdoor temperature, and the control end to the control end of No. 1 magnetic valve and No. 2 magnetic valves that transmits control signal respectively;
The specific implementation process of the method is, when outdoor temperature is for being more than or equal to 0 DEG C, temperature controller controls No. 1 magnetic valve and opens, No. 2 closed electromagnetic valves, and in plate type heat exchanger, cold-producing medium flows in gas-liquid separator by No. 1 magnetic valve, cold-producing medium is sucked by compressor by gas-liquid separator, cold-producing medium, after compressor compression, is discharged into condenser and carries out condensation, and then enter after gas-liquid separator through choke valve, flow in plate type heat exchanger and carry out exchange heat with chilled water
When outdoor temperature drops to below 0 DEG C, temperature controller controls No. 1 closed electromagnetic valve, No. 2 magnetic valves are opened, in plate type heat exchanger, cold-producing medium is by after the cooled dose of pump pressurization of No. 2 magnetic valves, enter in outdoor heat exchanger and carry out heat release, gas-liquid separator got back to by the cold-producing medium after cooling, enters in plate type heat exchanger by the second output channel of gas-liquid separator, and carry out exchange heat with the chilled water in this plate type heat exchanger
After the cooling of cooled dose of chilled water in plate type heat exchanger, through water pump pressurization, cooling object is lowered the temperature.
Dual-energy source of the present invention indirect refrigeration system in parallel and method make use of the weather of northern area cold in winter, by in the air induction system of low temperature, little electric energy is only needed to make refrigeration system reach cold requirement needed for cooled object, for relevant processing link has saved a large amount of electric energy, outdoor cold air resource is clean, infinitely great, it is convenient to obtain, and utilizes this resource to environment without any pollution.
Meanwhile, this system is indirect cooling system, uses water as refrigerating medium, nontoxic, to cooled object without any harmful effect, the cooling production link of the food processing class enterprise such as milk plant, brewery or pharmacy corporation can be applied in, can not have an impact to food or drug quality.Native system is in the application of Partial Food class processing enterprise, and energy-saving effect is remarkable, obtains the effect of 250kW refrigeration compressor with the power of 3kW pump.
The beneficial effect of Dual-energy source of the present invention indirect refrigeration system in parallel and method is:
1, during winter operation without the need to opening the very large compressor of power consumption, the refrigerating capacity of system still can meet the cooling requirement of cooled object, has saved a large amount of electric energy, has made electric energy saving more than 80%;
2, during winter operation, due to need not compressor be opened, reduce the noise of system cloud gray model, reduce the service wear of the refrigeration plants such as compressor, extend the service life of refrigeration plant;
3, adopt indirect refrigeration circulation, ensure the quality safety of the processed object such as food, medicine in cold working or storage.
4, native system can be applied to cold working and cryopreservation link, does not have limitation, and can ensure the even of temperature field.
Accompanying drawing explanation
Fig. 1 is the principle schematic of Dual-energy source of the present invention indirect refrigeration system in parallel;
Detailed description of the invention
Detailed description of the invention one: present embodiment is described see Fig. 1, Dual-energy source described in present embodiment indirect refrigeration system in parallel, it comprises compressor 1, condenser 2, gas-liquid separator 3, plate type heat exchanger 4, choke valve 7 and water pump 8, and it also comprises refrigerated medium pump 9 and outdoor heat exchanger 6;
Second output channel outlet of described plate type heat exchanger 4 is communicated with the entrance of refrigerated medium pump 9, the outlet of this refrigerated medium pump 9 is communicated with the entrance of outdoor heat exchanger 6, first input channel entrance of gas-liquid separator 3 and the outlet of outdoor heat exchanger 6, first output channel outlet of described gas-liquid separator 3 is communicated with the input channel entrance of condenser 2 by compressor 1, the output channel outlet of condenser 2 is communicated with the second input channel entrance of gas-liquid separator 3 through choke valve 7, second output channel outlet of gas-liquid separator 3 is communicated with the first input channel entrance of plate type heat exchanger 4, first output channel outlet of plate type heat exchanger 4 is communicated with the entrance of water pump 8, the outlet of this water pump 8 is communicated with the refrigeration piping entrance of refrigeration object, the refrigeration piping outlet of this refrigeration object is communicated with the second input channel entrance of plate type heat exchanger 4.
In present embodiment, outdoor heat exchanger 6 is added on the basis of existing refrigeration system, that is: on the basis of existing refrigeration system, the pipeline at compressor 1 place in existing system is in parallel with outdoor heat exchanger 6, just natural cold-energy can be applied in refrigeration system.
Detailed description of the invention two: present embodiment is with the difference of the Dual-energy source indirect refrigeration system in parallel described in detailed description of the invention one, it also comprises temperature controller 5, No. 1 magnetic valve 10 and No. 2 magnetic valves 11,
No. 1 described magnetic valve 10 is arranged between the second output channel outlet of plate type heat exchanger 4 and the entrance of refrigerated medium pump 9,
No. 2 magnetic valves 11 are arranged between the second output channel outlet of plate type heat exchanger 4 and the first input channel entrance of gas-liquid separator 3,
Described temperature controller 5 is for gathering outdoor temperature, and the control end to the control end of No. 1 magnetic valve 10 and No. 2 magnetic valves 11 that transmits control signal respectively.
In present embodiment, temperature controller 5, No. 1 magnetic valve 10 and No. 2 magnetic valves 11, being to enable this system be applicable to season except winter, can also being applicable in the higher environment of temperature, that is: select whether access outdoor heat exchanger 6 according to outdoor temperature and participate in refrigeration.
Detailed description of the invention three: the indirect refrigeration method in parallel of the Dual-energy source described in present embodiment, the method realizes based on following refrigeration system,
This refrigeration system comprises compressor 1, condenser 2, gas-liquid separator 3, plate type heat exchanger 4, outdoor heat exchanger 6, choke valve 7, water pump 8, temperature controller 5, refrigerated medium pump 9, No. 1 magnetic valve 10 and No. 2 magnetic valves 11;
Second output channel outlet of described plate type heat exchanger 4 is communicated with the entrance of refrigerated medium pump 9 through No. 2 magnetic valves 11, the outlet of this refrigerated medium pump 9 is communicated with the entrance of outdoor heat exchanger 6, second output channel outlet of described plate type heat exchanger 4 is also communicated with the first input channel entrance of gas-liquid separator 3 by No. 1 magnetic valve 10, and the outlet of the first input channel entrance of this gas-liquid separator 3 and outdoor heat exchanger 6, first output channel outlet of described gas-liquid separator 3 is communicated with the input channel entrance of condenser 2 by compressor 1, the output channel outlet of condenser 2 is communicated with the second input channel entrance of gas-liquid separator 3 through choke valve 7, second output channel outlet of gas-liquid separator 3 is communicated with the first input channel entrance of plate type heat exchanger 4, first output channel outlet of plate type heat exchanger 4 is communicated with the entrance of water pump 8, the outlet of this water pump 8 is communicated with the refrigeration piping entrance of refrigeration object, the refrigeration piping outlet of this refrigeration object is communicated with the second input channel entrance of plate type heat exchanger 4,
Described temperature controller 5 is for gathering outdoor temperature, and the control end to the control end of No. 1 magnetic valve 10 and No. 2 magnetic valves 11 that transmits control signal respectively;
The specific implementation process of the method is,
When outdoor temperature is for being more than or equal to 0 DEG C, temperature controller 5 controls No. 1 magnetic valve 10 and opens, No. 2 magnetic valves 11 cut out, in plate type heat exchanger 4, cold-producing medium flows in gas-liquid separator 3 by No. 1 magnetic valve 10, and cold-producing medium is sucked by compressor 1 by gas-liquid separator 3, and cold-producing medium is after compressor 1 compresses, be discharged into condenser 2 and carry out condensation, and then enter after gas-liquid separator 3 through choke valve 7, flow in plate type heat exchanger 4 and carry out exchange heat with chilled water
When outdoor temperature drops to below 0 DEG C, temperature controller 5 controls No. 1 magnetic valve 10 and closes, No. 2 magnetic valves 11 are opened, in plate type heat exchanger 4, cold-producing medium is by after No. 2 magnetic valve 11 cooled doses of pumps 9 pressurizations, enter in outdoor heat exchanger 6 and carry out heat release, gas-liquid separator 3 got back to by the cold-producing medium after cooling, enters in plate type heat exchanger 4 by the second output channel of gas-liquid separator 3, and carry out exchange heat with the chilled water in this plate type heat exchanger 4
After the cooling of cooled dose of chilled water in plate type heat exchanger 4, pressurize through water pump 8, cooling object is lowered the temperature.
In present embodiment, when outdoor temperature is for being more than or equal to 0 DEG C, needs to use compressor 1, freezing, and when outdoor temperature drops to below 0 DEG C, without the need to using compressor.
Claims (2)
1. Dual-energy source indirect refrigeration system in parallel, it comprises compressor (1), condenser (2), gas-liquid separator (3), plate type heat exchanger (4), choke valve (7) and water pump (8), it is characterized in that, it also comprises refrigerated medium pump (9), outdoor heat exchanger (6), temperature controller (5), No. 1 magnetic valve (10) and No. 2 magnetic valves (11);
Second output channel outlet of described plate type heat exchanger (4) is communicated with the entrance of refrigerated medium pump (9), the outlet of this refrigerated medium pump (9) is communicated with the entrance of outdoor heat exchanger (6), first input channel entrance of gas-liquid separator (3) and the outlet of outdoor heat exchanger (6), first output channel outlet of described gas-liquid separator (3) is communicated with by the input channel entrance of compressor (1) with condenser (2), the output channel outlet of condenser (2) is communicated with the second input channel entrance of gas-liquid separator (3) through choke valve (7), second output channel outlet of gas-liquid separator (3) is communicated with the first input channel entrance of plate type heat exchanger (4), first output channel outlet of plate type heat exchanger (4) is communicated with the entrance of water pump (8), the outlet of this water pump (8) is communicated with the refrigeration piping entrance of refrigeration object, the refrigeration piping outlet of this refrigeration object is communicated with the second input channel entrance of plate type heat exchanger (4),
No. 1 described magnetic valve (10) is arranged between the second output channel outlet of plate type heat exchanger (4) and the entrance of refrigerated medium pump (9),
No. 2 magnetic valves (11) are arranged between the second output channel outlet of plate type heat exchanger (4) and the first input channel entrance of gas-liquid separator (3),
Described temperature controller (5) is for gathering outdoor temperature, and the control end to the control end of No. 1 magnetic valve (10) and No. 2 magnetic valves (11) that transmits control signal respectively.
2. Dual-energy source indirect refrigeration method in parallel, it is characterized in that, the method realizes based on following refrigeration system,
This refrigeration system comprises compressor (1), condenser (2), gas-liquid separator (3), plate type heat exchanger (4), outdoor heat exchanger (6), choke valve (7), water pump (8), temperature controller (5), refrigerated medium pump (9), No. 1 magnetic valve (10) and No. 2 magnetic valves (11);
Second output channel outlet of described plate type heat exchanger (4) is communicated with the entrance of refrigerated medium pump (9) through No. 2 magnetic valves (11), the outlet of this refrigerated medium pump (9) is communicated with the entrance of outdoor heat exchanger (6), second output channel outlet of described plate type heat exchanger (4) is also communicated with the first input channel entrance of gas-liquid separator (3) by No. 1 magnetic valve (10), and the outlet of the first input channel entrance of this gas-liquid separator (3) and outdoor heat exchanger (6), first output channel outlet of described gas-liquid separator (3) is communicated with by the input channel entrance of compressor (1) with condenser (2), the output channel outlet of condenser (2) is communicated with the second input channel entrance of gas-liquid separator (3) through choke valve (7), second output channel outlet of gas-liquid separator (3) is communicated with the first input channel entrance of plate type heat exchanger (4), first output channel outlet of plate type heat exchanger (4) is communicated with the entrance of water pump (8), the outlet of this water pump (8) is communicated with the refrigeration piping entrance of refrigeration object, the refrigeration piping outlet of this refrigeration object is communicated with the second input channel entrance of plate type heat exchanger (4),
Described temperature controller (5) is for gathering outdoor temperature, and the control end to the control end of No. 1 magnetic valve (10) and No. 2 magnetic valves (11) that transmits control signal respectively;
The specific implementation process of the method is,
When outdoor temperature is for being more than or equal to 0 DEG C, temperature controller (5) controls the unlatching of No. 1 magnetic valve (10), No. 2 magnetic valves (11) are closed, in plate type heat exchanger (4), cold-producing medium flows in gas-liquid separator (3) by No. 1 magnetic valve (10), cold-producing medium is sucked by compressor (1) by gas-liquid separator (3), cold-producing medium is after compressor (1) compression, be discharged into condenser (2) and carry out condensation, and then enter after gas-liquid separator (3) through choke valve (7), flow in plate type heat exchanger (4) and carry out exchange heat with chilled water,
When outdoor temperature drops to below 0 DEG C, temperature controller (5) controls the closedown of No. 1 magnetic valve (10), No. 2 magnetic valves (11) are opened, in plate type heat exchanger (4), cold-producing medium is by after cooled dose of pump (9) pressurization of No. 2 magnetic valves (11), enter in outdoor heat exchanger (6) and carry out heat release, gas-liquid separator (3) got back to by cold-producing medium after cooling, enter in plate type heat exchanger (4) by the second output channel of gas-liquid separator (3), and carry out exchange heat with the chilled water in this plate type heat exchanger (4)
After the cooling of cooled dose of chilled water in plate type heat exchanger (4), through water pump (8) pressurization, cooling object is lowered the temperature.
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| CN106468465B (en) * | 2015-08-25 | 2022-05-10 | 沈阳乐金空调净化工程有限公司 | Winter energy recovery refrigerating system and refrigerating method thereof |
| CN106568259B (en) * | 2015-10-08 | 2022-08-12 | 中海油能源发展股份有限公司 | Refrigeration house refrigerating system based on liquefied natural gas cold energy |
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