CN107621093A - The CO of devaporizer supercooling based on hydraulic recovery2Freezing and refrigerating system - Google Patents
The CO of devaporizer supercooling based on hydraulic recovery2Freezing and refrigerating system Download PDFInfo
- Publication number
- CN107621093A CN107621093A CN201710974214.2A CN201710974214A CN107621093A CN 107621093 A CN107621093 A CN 107621093A CN 201710974214 A CN201710974214 A CN 201710974214A CN 107621093 A CN107621093 A CN 107621093A
- Authority
- CN
- China
- Prior art keywords
- temperature level
- medium temperature
- low
- compressor
- devaporizer
- 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
Links
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a kind of CO of the devaporizer supercooling based on hydraulic recovery2Freezing and refrigerating system.The devaporizer that the present invention includes hydraulic recovery aided in cooling system and middle cryogenic freezing refrigerating system；The devaporizer of hydraulic recovery aided in cooling system to include medium temperature level expanding machine, low-temperature level expanding machine, water distribution system, dehydrator, coil pipe, fan, motor, water pump and power-supply management system；Middle cryogenic freezing refrigerating system includes medium temperature level compressor, low-temperature level compressor, gas cooler, medium temperature evaporator, cryogenic vaporizer, reservoir, choke valve and electric expansion valve.The present invention realizes two temperature grades of medium temperature level and low-temperature level, and using Two-stage Compression, low-temperature level exhaust mixes with medium temperature level evaporator outlet fluid, efficient by medium temperature level compressor compresses, energy saving of system afterwards.
Description
Technical field
Refrigeration technique was aided in the present invention relates to hydraulic recovery and using devaporizer, more particularly to it is a kind of based on overbottom pressure time
The devaporizer of receipts aided in cooling system.
Background technology
Imitated with fluorochlorohydrocarbon (CFCs) and hydrogen fluorochlorohydrocarbon (HCFCs) class material damage ozone layer and with higher greenhouse
Should be by or by gradually disabled.Relevant enterprise, scientific research institutions and colleges and universities both domestic and external increase to CO one after another2Refrigeration air-conditioner system
The input of system research and development, CO2Refrigerated air-conditioning system is the important research direction of refrigerating and air conditioning industry development from now on.CO2Have many excellent
Point：1) it is environment-friendly, ODP=0, GWP=1；2) safe and non-toxic non-combustible, chemical property is stable；3) it is cheap easily to obtain；4) with moistening
The compatibility of lubricating oil；5) viscosity is low, thermal conductivity factor is high, has good hot physical property and flowing and heat-transfer character；6) unit is held
Product cooling/heating amount is higher, compared with common working medium, CO2Equipment volume more compact.But CO2Kind of refrigeration cycle height pressure difference compared with
Height, restriction loss is big, causes its efficiency (COP) relatively low relative to conventional refrigerant system.
In Japan, with the CO of " ecology is smart " (Eco-Cute) using names2Teat pump boiler is as a kind of production of energy-conserving and environment-protective
Its annual turnover is held in more than 450,000 to product in recent years.Norway in Europe, CO2Refrigeration system is in Supermarket clod system
The trend increased is presented in the use of system, and has turned into the first choice of supermarket's operator.Although CO2Refrigeration and air-conditioning technical has been applied to more
Individual field, and in Europe, Japanese and north America region extensive use, but CO2The relatively low key of Trans-critical cycle refrigeration cycle efficiency is asked
Topic is not solved at all yet.CO2Critical-temperature be 31.1 DEG C, critical pressure is up to 7.38MPa, and exothermic process generally occurs
On critical point, commonly referred to as CO2Kind of refrigeration cycle is trans critical cycle.Because its operating pressure is high, throttling irreversible loss is big,
Cause to circulate the reverse Carnot cycle of substantial deviation, CO2Trans critical cycle efficiency circulates less than conventional refrigerant.
Therefore, novel C O is developed2Trans-critical cycle kind of refrigeration cycle, reduce CO2Restriction loss, lifting circulation thermal performance, to improve
CO2Trans-critical cycle kind of refrigeration cycle efficiency provides a new road, to mitigating greenhouse effects, realizing that HCFCs is substituted with important
Economic value and social effect.
The content of the invention
Present invention aims at a kind of devaporizer based on hydraulic recovery of offer to aid in cooling system, cold by evaporating
But device accessory system is to CO2The CO of gas cooler outlet2Fluid is subcooled, and reduces CO2Irreversible damage in throttling process
Lose, improve refrigeration system COP.
The technical solution used in the present invention is：A kind of CO of the devaporizer supercooling based on hydraulic recovery2Freeze cold
Tibetan system, including the devaporizer of hydraulic recovery aided in cooling system and middle cryogenic freezing refrigerating system；The steaming of hydraulic recovery
Hair cooler aided in cooling system to include medium temperature level expanding machine, low-temperature level expanding machine, water distribution system, dehydrator, coil pipe, wind
Fan, motor, water pump and power-supply management system；Middle cryogenic freezing refrigerating system includes medium temperature level compressor, low-temperature level compressor, gas
Body cooler, medium temperature evaporator, cryogenic vaporizer, reservoir, choke valve and electric expansion valve；Low-temperature level expanding machine and medium temperature level
Expanding machine connects motor and water pump, motor respectively by connection power-supply management system, power-supply management system by power line
Driving fan, fan lower section set gradually dehydrator, water distribution system and coil pipe, and water pump connects water distribution system by water route；
Medium temperature stage compressor outlet connects gas cooler entrance, gas cooler outlet connection coil inlet, in coil outlets connection
Warm level expander inlet, medium temperature level expander outlet connection reservoir entrance, reservoir outlet connect respectively electric expansion valve and
Low-temperature level expander inlet, electric expansion valve are throttled by medium temperature evaporator medium temperature level suction port of compressor, reservoir by setting
The pipeline connection medium temperature level suction port of compressor of valve, low-temperature level expander outlet connect low-temperature level compressor by cryogenic vaporizer and entered
Mouthful, low temperature stage compressor outlet connection medium temperature level suction port of compressor.
The devaporizer of hydraulic recovery aided in cooling system by medium temperature level expanding machine, low-temperature level expanding machine, moisture disposition
System, dehydrator, coil pipe and power-supply management system composition.In, to be transferred to devaporizer auxiliary for the electric energy of low-temperature level expanding machine output
The power-supply management system of cooling system was helped, power-supply management system is powered to fan and water pump respectively, forms circulation, so as to CO2
The CO of gas cooler outlet2Fluid carries out cooling and reaches supercooling effect.
Middle cryogenic freezing refrigerating system is expanded by low-temperature level compressor, medium temperature level compressor, low-temperature level expanding machine, medium temperature level
Machine, cryogenic vaporizer, medium temperature evaporator, gas cooler, choke valve and copper pipe of reservoir group into.Filled in middle cryogenic freezing refrigerating system
The working medium of note is CO2, by the CO of low temperature stage compressor outlet2Superheated steam and the excessively hot CO of medium temperature evaporator outlet2Fluid mixes
It is cold into gas by medium temperature level compressor compresses to high temperature high-pressure supercritical fluid into medium temperature level compressor air suction mouth after conjunction
But device is exchanged heat with surrounding air, is cooled to the supercritical fluid of a little higher than environment temperature of temperature, afterwards high pressure CO2Fluid passes through
Cross medium temperature level expanding machine to do work, the CO after expansion work2Gas-liquid two-phase fluid is separated into gaseous fluid and liquid phase into reservoir
Fluid, wherein gaseous fluid pass through choke valve reducing pressure by regulating flow, flow into medium temperature level compressor, and a liquid phase fluid part flows through electronics
Expansion valve reaches medium temperature evaporator, and a part is done work by low-temperature level expander, becomes afterwards into cryogenic vaporizer, heat absorption
Enter medium temperature level compressor air suction mouth to cross after hot gas, complete circulation.
The present invention has the advantages and positive effects of：
(1) refrigerant of refrigeration system is natural refrigerant CO2。CO2GWP be 1, ODP 0, it is safe and non-toxic non-combustible, honest and clean
Valency easily obtains, and does not also decompose generation pernicious gas under the high temperature conditions, is environment-friendly refrigerant, is made with HCFC and HFC etc.
Cryogen is compared, and alleviates greenhouse effects significantly, and environment-friendly advantage is obvious.
(2) due to CO2Pressure difference is big in throttling process, after replacing choke valve using expanding machine, in recyclable throttling process
Expansion work, realize hydraulic recovery.
(3) electricity that the acting of low-temperature level expanding machine is sent in is supplied to devaporizer auxiliary supercooling power supply managing system
System, cooling system was aided in CO by devaporizer2Fluid is subcooled, so as to improve system COP.
(4) by aiding in cooling system by CO2It is cooled to below environment temperature, can be significantly carried in warm, hot area
High CO2Refrigeration system COP.
(5) gentle low-temperature level carries out expansion decompression respectively in, realizes two temperature grades of medium temperature level and low-temperature level, uses
Two-stage Compression, low-temperature level exhaust mix with medium temperature level evaporator outlet fluid, pass through medium temperature level compressor compresses, system section afterwards
Can be efficiently.
And traditional CO (6)2Transcritical cooling system compares, and can reduce gas cooler optimum pressure.
Brief description of the drawings
Fig. 1 is the system schematic of the present invention.
Embodiment
In order to further understand the content, features and effects of the present invention, hereby enumerating following examples, and coordinate accompanying drawing
Describe in detail as follows：
A kind of referring to Fig. 1, CO of the devaporizer auxiliary supercooling based on hydraulic recovery2Freezing and refrigerating system, overbottom pressure
The devaporizer of recovery aided in cooling system to include medium temperature level expanding machine 2, low-temperature level expanding machine 4, water distribution system 12, dehydration
Device 13, coil pipe 14, fan 15, motor 17, water pump 16 and power-supply management system 11；Middle cryogenic freezing refrigerating system includes medium temperature level
Compressor 10, low-temperature level compressor 6, gas cooler 1, medium temperature evaporator 9, cryogenic vaporizer 5, reservoir 3, the and of choke valve 7
Electric expansion valve 8；Low-temperature level expanding machine 4 and medium temperature level expanding machine 2 pass through connection power-supply management system 11, power management system
System 11 connects motor 17 and water pump 16, motor-driven fan by power line respectively, and fan lower section sets gradually dehydrator 13, water
Distribution system 12 and coil pipe 14, water pump connect water distribution system 12 by water route；Medium temperature stage compressor outlet connects gas cooling
Device entrance, gas cooler outlet connection coil inlet, coil outlets connection medium temperature level expander inlet, medium temperature level expanding machine go out
Mouth connection reservoir entrance, reservoir outlet connect electric expansion valve and low-temperature level expander inlet respectively, and electric expansion valve leads to
Cross medium temperature evaporator medium temperature level suction port of compressor, reservoir by setting the pipeline of choke valve to connect medium temperature level suction port of compressor,
Low-temperature level expander outlet connects low-temperature level suction port of compressor, low temperature stage compressor outlet connection medium temperature level by cryogenic vaporizer
Suction port of compressor.
The CO of devaporizer auxiliary supercooling of the present embodiment based on hydraulic recovery2The work of middle cryogenic freezing refrigerating system
Principle is：
The first step：The electricity sent that low-temperature level expanding machine 4 and medium temperature level expanding machine 2 export supplies devaporizer and aided in
The power-supply management system 11 of cooling system, power-supply management system 11 are powered to the motor 17 and water pump 16 for driving fan 15 respectively, water
Cooling water is delivered to water distribution system 12 by pump 16, and water uniformly drops to the surface of coil pipe 14, forms moisture film, is driven by blower fan empty
Gas skips over moisture film, promotes CO in moisture evaporation absorption coil2The heat of fluid, so as to CO2The CO that gas cooler 1 exports2Stream
Body carries out cooling and reaches supercooling effect.Moisture film can partly become droplet with flowing up under the swabbing action of fan 15
Air leaves devaporizer into atmospheric environment, and which adds the consumption of water, dehydrator can stop most small
Drop is carried into air, and the droplet being blocked finally is flow back into inside devaporizer, is played saving cooling water and is disappeared
The effect of consumption.
Second step：The working medium of filling is CO in refrigeration system2, the CO of low-temp low-pressure2Steam is inhaled into medium temperature level compressor 10
Gas port, HTHP supercritical fluid is compressed to by medium temperature level compressor 10, is changed into gas cooler 1 with surrounding air
Heat, a little higher than environment temperature of refrigerant temperature now.
3rd step：Done work by medium temperature level expanding machine 2, be changed into gas-liquid two-phase fluid and enter reservoir 3, gas-liquid two-phase fluid
Gas phase two-phase is not categorized as by Action of Gravity Field, and gaseous fluid is on reservoir top, and liquid phase fluid is in reservoir bottom.Wherein gas phase
CO2Fluid is changed into the gas-liquid two-phase fluid of middle pressure after the expansion throttling of choke valve 7；A liquid phase fluid part flows through electronic expansion
Valve 8 reaches medium temperature evaporator 9 after expanding, part driving low-temperature level expanding machine 4 is expanded to gas-liquid two-phase fluid entrance after doing work
Cryogenic vaporizer, it was changed into hot gas after heat absorption, afterwards into low-temperature level compressor 6.
4th step：The outlet superheat gas of low-temperature level compressor 6, the outlet superheat gas of medium temperature evaporator 9 and the gas phase stream of fluid reservoir 3
The tunnel of gas-liquid two-phase fluid three after body segment stream, which is converged, flows back to medium temperature level compressor 10, completes kind of refrigeration cycle.
Although the preferred embodiments of the present invention are described above in conjunction with accompanying drawing, the invention is not limited in upper
The embodiment stated, above-mentioned embodiment is only schematical, be not it is restricted, this area it is common
Technical staff in the case of present inventive concept and scope of the claimed protection is not departed from, may be used also under the enlightenment of the present invention
By make it is many in the form of, these are belonged within protection scope of the present invention.
Claims (1)
- A kind of 1. CO of the devaporizer supercooling based on hydraulic recovery2Freezing and refrigerating system, it is characterized in that, including hydraulic recovery Devaporizer aided in cooling system and middle cryogenic freezing refrigerating system；The devaporizer of hydraulic recovery aided in cooling system Including medium temperature level expanding machine, low-temperature level expanding machine, water distribution system, dehydrator, coil pipe, fan, motor, water pump and power management System；Middle cryogenic freezing refrigerating system includes medium temperature level compressor, low-temperature level compressor, gas cooler, medium temperature evaporator, low Warm evaporator, reservoir, choke valve and electric expansion valve；Low-temperature level expanding machine and medium temperature level expanding machine pass through connection power supply Management system, power-supply management system connect motor and water pump, motor-driven fan respectively by power line, and fan lower section is set successively Dehydrator, water distribution system and coil pipe are put, water pump connects water distribution system by water route；Medium temperature stage compressor outlet connects gas Cooler entrance, gas cooler outlet connection coil inlet, coil outlets connection medium temperature level expander inlet, the expansion of medium temperature level Machine outlet connection reservoir entrance, reservoir outlet connect electric expansion valve and low-temperature level expander inlet, electronic expansion respectively Valve is entered by medium temperature evaporator medium temperature level suction port of compressor, reservoir by setting the pipeline of choke valve to connect medium temperature level compressor Mouthful, low-temperature level expander outlet connects low-temperature level suction port of compressor by cryogenic vaporizer, in the connection of low temperature stage compressor outlet Warm level suction port of compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710974214.2A CN107621093A (en) | 2017-10-19 | 2017-10-19 | The CO of devaporizer supercooling based on hydraulic recovery2Freezing and refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710974214.2A CN107621093A (en) | 2017-10-19 | 2017-10-19 | The CO of devaporizer supercooling based on hydraulic recovery2Freezing and refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107621093A true CN107621093A (en) | 2018-01-23 |
Family
ID=61092719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710974214.2A Pending CN107621093A (en) | 2017-10-19 | 2017-10-19 | The CO of devaporizer supercooling based on hydraulic recovery2Freezing and refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107621093A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912131A (en) * | 2020-06-16 | 2020-11-10 | 西安交通大学 | Multistage cooling carbon dioxide refrigeration air conditioner and refrigeration method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575885A (en) * | 2009-10-07 | 2012-07-11 | 三菱电机株式会社 | Refrigeration cycle device |
| CN104697227A (en) * | 2015-03-17 | 2015-06-10 | 浙江国祥空调设备有限公司 | Evaporation condensation high-efficiency screw water chilling unit with deep supercooling device |
| CN105937815A (en) * | 2015-03-04 | 2016-09-14 | 西克制冷产品有限责任公司 | Modulated oversized compressors configuration for flash gas bypass in a carbon dioxide refrigeration system |
| CN106839485A (en) * | 2017-01-24 | 2017-06-13 | 天津商业大学 | CO 2 cross-critical cooling cycle system based on Driven by Solar Energy auxiliary supercooling |
| CN207350986U (en) * | 2017-10-19 | 2018-05-11 | 天津商业大学 | The CO2 freezing and refrigerating systems of devaporizer supercooling based on hydraulic recovery |
-
2017
- 2017-10-19 CN CN201710974214.2A patent/CN107621093A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575885A (en) * | 2009-10-07 | 2012-07-11 | 三菱电机株式会社 | Refrigeration cycle device |
| CN105937815A (en) * | 2015-03-04 | 2016-09-14 | 西克制冷产品有限责任公司 | Modulated oversized compressors configuration for flash gas bypass in a carbon dioxide refrigeration system |
| CN104697227A (en) * | 2015-03-17 | 2015-06-10 | 浙江国祥空调设备有限公司 | Evaporation condensation high-efficiency screw water chilling unit with deep supercooling device |
| CN106839485A (en) * | 2017-01-24 | 2017-06-13 | 天津商业大学 | CO 2 cross-critical cooling cycle system based on Driven by Solar Energy auxiliary supercooling |
| CN207350986U (en) * | 2017-10-19 | 2018-05-11 | 天津商业大学 | The CO2 freezing and refrigerating systems of devaporizer supercooling based on hydraulic recovery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912131A (en) * | 2020-06-16 | 2020-11-10 | 西安交通大学 | Multistage cooling carbon dioxide refrigeration air conditioner and refrigeration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207350986U (en) | The CO2 freezing and refrigerating systems of devaporizer supercooling based on hydraulic recovery | |
| CN103629860B (en) | Trans-critical cycle CO 2cool and thermal power combined cycle system | |
| CN107631511A (en) | The CO of auxiliary supercooling based on hydraulic recovery2Middle cryogenic freezing refrigerating system | |
| CN207350988U (en) | Cryogenic freezing refrigerating system in the CO2 of auxiliary supercooling based on hydraulic recovery | |
| Liu et al. | Performance analysis of a modified dual-ejector and dual-evaporator transcritical CO2 refrigeration cycle for supermarket application | |
| CN105135749B (en) | Carbon dioxide cold-hot combined supply system | |
| CN107843020A (en) | A kind of Trans-critical cycle CO2Two-stage Compression is pressurized refrigeration system | |
| CN109724293A (en) | The CO of the absorption supercooling of Driven by Solar Energy2Trans-critical cycle double-stage compressive refrigerating system | |
| CN110513926A (en) | Twin-stage throttling non-azeotropic working medium mechanical super cooling CO2Trans-critical cycle cooling cycle system | |
| CN110030756A (en) | A kind of Trans-critical cycle CO with injector2Multi-temperature zone supermarket cold-hot combined supply system | |
| CN110500824A (en) | A kind of non-azeotropic working medium supercharging mechanical supercooling CO2Transcritical cooling system | |
| CN103615824B (en) | A kind of many warm areas cold acquisition methods and device reclaiming driving based on expansion work | |
| CN109506391A (en) | Thermal drivers are without the Trans-critical cycle CO for pumping absorption auxiliary supercooling2Refrigeration system | |
| CN110057125A (en) | A kind of CO of double vortex tube couplings2Double-stage compressive refrigerating system | |
| CN107621093A (en) | The CO of devaporizer supercooling based on hydraulic recovery2Freezing and refrigerating system | |
| CN209371555U (en) | Ultra low temperature overlapping heat pump unit | |
| CN205579968U (en) | Big temperature rise two -stage of efficient throttle two -stage compression heat pump water heater | |
| CN201621890U (en) | Multi-functional heat pump circulation unit taking carbon dioxide as refrigeration working medium | |
| CN207350987U (en) | Cryogenic freezing refrigerating system in CO2 based on hydraulic recovery | |
| CN207729861U (en) | A kind of transcritical CO_2 Two-stage Compression supercharging refrigeration system | |
| CN106247657A (en) | A kind of carbon dioxide refrigerator refrigeration system | |
| CN206771804U (en) | A kind of multistage evaporation compression heat pump device for preventing frosting | |
| CN110513902A (en) | A kind of multistage evaporation condensation mechanical super cooling Trans-critical cycle CO2Moderate and high temperature heat system | |
| CN109945292A (en) | Double heat source two stages of compression heat pump hot-water systems and method with auxiliary compressor | |
| CN109724284A (en) | A kind of supercritical carbon dioxide refrigeration system of two-stage throttling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180123 |