CN110082066A - The shunting performance testing experimental system influenced by the non-homogeneous heat exchange in downstream - Google Patents
The shunting performance testing experimental system influenced by the non-homogeneous heat exchange in downstream Download PDFInfo
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- CN110082066A CN110082066A CN201910457614.5A CN201910457614A CN110082066A CN 110082066 A CN110082066 A CN 110082066A CN 201910457614 A CN201910457614 A CN 201910457614A CN 110082066 A CN110082066 A CN 110082066A
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- heat exchanger
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- downstream
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- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000005485 electric heating Methods 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- 239000011521 glass Substances 0.000 claims abstract description 16
- 238000004088 simulation Methods 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 abstract description 13
- 238000005057 refrigeration Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000010998 test method Methods 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention relates to refrigeration technology fields, more particularly to a kind of shunting performance testing experimental system influenced by the non-homogeneous heat exchange in downstream, including the first working medium pump, mass flowmenter, electric heating heat exchanger, current divider, partial flows channel, simulation evaporator, liquid-sighting glass, superheat section evaporator, level header, condenser, liquid storage device, excessively cold heat exchanger, thermostatic water bath, the first regulating valve and sampling valve.The present invention tests phase stalling characteristic using indirect test method, and lubricating oil in practical refrigeration system can be overcome to shunt in the presence of influence two phase refrigerant, can provide enough information for understanding distributary phenomenon.By the shunting performance testing experimental system, the current divider phase stalling characteristic influenced by downstream parameter can be tested, and provide more fully foundation to the further design optimization of dispenser.
Description
Technical field
The present invention relates to refrigeration technology field more particularly to a kind of shunting performance tests influenced by the non-homogeneous heat exchange in downstream
Experimental system.
Background technique
Since current divider is related to evenly distributing for biphase gas and liquid flow to the distribution of refrigerant in refrigeration system, currently without
The Research Literature of one design method published, domestic and foreign scholars and enterprise shows refrigeration system evaporator current divider
Research method mainly has based on testing, supplemented by simulation.Experiment purpose is that inspection is above-mentioned for calculating flow maldistribution
Simulation model it is whether correct.By the comparison of the result and simulation model result, the correctness of front simulation model is verified, and
Foundation is provided for the shunting performance evaluation under different distributor patterns.
According to the research of forefathers, dispenser performance test methods are broadly divided into two classes:
(1) gas-liquid mixture is used, such as air-water mixt or nitrogen-aqueous mixtures, on each branch pipe after current divider
The flow of gas and liquid is measured, respectively to assess the distributing uniformity of dispenser.This test method principle is simple, is easy to take
It builds and tests, have the characteristics that easy to operate, safe, while visual research is also opposite is easier to.However, air and water is close
Degree difference is almost used for 30 times of the freon refrigerant of practical air-conditioning system, huge with actual physical properties gap, this
The flow regime and behavior that will lead to two phase flow have very big difference, so as to cause bigger experimental error.In addition to this, respectively
Whether branch liquid separation is uniform, is also influenced by each branch thermal force of heat exchanger, and this method cannot consider heat exchange to distribution
Influence.
(2) refrigeration system with dispenser is used, is added the refrigerant of each branch pipe after current divider by electric heater
Heat is the single-phase steam with certain super heated condition, and test dispenser exports mistake of the corresponding each branch after heat exchanger
Perhaps heat exchange amount assesses distributing uniformity by the difference of the comparison degree of superheat or heat exchange amount to temperature.This method is easier to
It realizes, can intuitively compare the performance of dispenser.But its shortcomings that, is, not can know that the specific mass flow of each branch
With the ratio of gas-liquid two-phase；When the degree of superheat is larger, the difference observed may be less than the difference of practical each branch.Because working as
Each branch all enters after overheated zone, and heat exchange property all sharply declines, and the difference showed is just without so obvious.And
Using refrigerant as the working fluid, there is a problem of what two phase refrigerant state was difficult to control, variation range is relatively narrow, and range of operation is difficult
To reach specific operating condition, thus easily cause biggish fluctuating error.
All there is inevitable principle and technological deficiency in both experimental methods, not can avoid in practical refrigeration system and moisten
Lubricating oil, which shunts two phase refrigerant to exist, to be influenced, and can not be provided enough information for understanding distributary phenomenon, is unable to test by under
Swim parameter influence current divider phase stalling characteristic, thus can not to the further design optimization of dispenser provide more fully according to
According to.Therefore, it is necessary to propose and design novel shunting performance testing experimental system.
Summary of the invention
It is an object of the invention to overcome the shortcomings of above-mentioned technology, and provide a kind of point influenced by the non-homogeneous heat exchange in downstream
Fluidity energy testing experimental system.
The present invention to achieve the above object, using following technical scheme: a kind of shunting influenced by the non-homogeneous heat exchange in downstream
Performance test experimental system, which is characterized in that including the first working medium pump, mass flowmenter, electric heating heat exchanger, current divider, divide
Flow flow channel, simulation evaporator, liquid-sighting glass, superheat section evaporator, level header, condenser, liquid storage device, cross cold heat exchanger,
Thermostatic water bath, the first regulating valve and sampling valve；One end of first working medium pump is connect with one end of the mass flowmenter, institute
The other end for stating mass flowmenter is connect with one end of the electric heating heat exchanger, the other end of the electric heating heat exchanger and institute
The one end for stating sampling valve is connected, and the sampling valve other end is connect with the current divider, and the current divider includes a plurality of in parallel
The partial flows channel, every partial flows channel are connect with the sampling valve, the partial flows channel it is another
It holds and is connect with one end of the simulation evaporator, the other end of the simulation evaporator is connect with one end of the liquid-sighting glass, institute
The other end for stating liquid-sighting glass is connect with one end of the superheat section evaporator, the other end and the water of the analog section evaporator
One end of flat collector connects, and the other end of the level header connection is connect with one end of the condenser, and the condenser is another
One end is connect with liquid storage device, and the liquid storage device includes gas vent and liquid outlet, the liquid storage device liquid outlet and the mistake
One end of cold heat exchanger connects, and the cold heat exchanger other end of crossing is connect with one end of the liquid-sighting glass, the liquid-sighting glass it is another
One end is connect with first working medium pump, forms closed cycle.
Preferably, one end of the thermostatic water bath is connect with one end of the second working medium pump, second working medium pump it is another
End is connect with the condenser, and the condenser is connect with the thermostatic water bath, forms closed cycle.
Preferably, first regulating valve is installed between first working medium pump and the mass flowmenter.
Preferably, reserved oiling device is equipped between the mass flowmenter and the electric heating heat exchanger, it is described reserved
Oiling device includes oil conservator, the second regulating valve and third regulating valve；The both ends of the oil conservator pass through described second respectively and adjust
Section valve and third regulating valve are connected on the pipeline between mass flowmenter and the electric heating heat exchanger.
The beneficial effects of the present invention are: the present invention tests phase stalling characteristic using indirect test method, reality can be overcome
Lubricating oil shunts two phase refrigerant to exist and influence in refrigeration system, can provide enough information for understanding distributary phenomenon.
By the shunting performance testing experimental system, the current divider phase stalling characteristic influenced by downstream parameter can be tested, and to liquid separation
The further design optimization of device provides more fully foundation.
Detailed description of the invention
Fig. 1 show main view of the invention；
Fig. 2 show the structural schematic diagram that oiling device is reserved in the present invention.
Specific embodiment
With reference to the accompanying drawing and the preferred embodiment specific embodiment that the present invention will be described in detail.As shown in Figs. 1-2, a kind of
The shunting performance testing experimental system influenced by the non-homogeneous heat exchange in downstream, including the first working medium pump 1, mass flowmenter 2, electric heating
Heat exchanger 3 shunts 4 devices, is partial flows channel 5, simulation evaporator 6, liquid-sighting glass 7, superheat section evaporator 8, level header 9, cold
Condenser 10, crosses cold heat exchanger 12, thermostatic water bath 13, the first regulating valve 14, oil conservator 15, pressure-measuring-point P, temperature at liquid storage device 11
Measuring point T, pressure difference measuring point Δ P, reserved oiling device 16 and sampling valve 17.One end of first working medium pump and the mass flow
One end of meter connects, and the other end of the mass flowmenter is connect with one end of the electric heating heat exchanger, the mass flow
Reserved oiling device 16 is equipped between meter and the electric heating heat exchanger, the reserved oiling device includes oil conservator 15, second
Regulating valve 18 and third regulating valve 19；The both ends of the oil conservator are connected by second regulating valve with third regulating valve respectively
On pipeline between mass flowmenter and the electric heating heat exchanger.
The other end of the electric heating heat exchanger is connected with one end of the sampling valve, the sampling valve other end with it is described
Current divider connection, the current divider includes the partial flows channel of a plurality of parallel connection, every partial flows channel and institute
Sampling valve connection is stated, the other end in the partial flows channel is connect with one end of the simulation evaporator, the simulation evaporation
The other end of device is connect with one end of the liquid-sighting glass, and one end of the other end of the liquid-sighting glass and the superheat section evaporator connects
It connects, the other end of the analog section evaporator is connect with one end of the level header, the other end of the level header connection
It is connect with one end of the condenser, the condenser other end is connect with liquid storage device, and the liquid storage device includes gas vent 11a
With liquid outlet 11b, the gas vent is connect by regulating valve with the first working medium pump, the liquid outlet of the liquid storage device and institute
One end connection of cold heat exchanger was stated, the cold heat exchanger other end of crossing is connect with one end of the liquid-sighting glass, the liquid-sighting glass
The other end connect with first working medium pump, formed closed cycle.One end of the thermostatic water bath and the second working medium pump 20
One end connection, the other end of second working medium pump are connect with the condenser, and the condenser is connect with the thermostatic water bath,
Form closed cycle.First regulating valve 14 is installed between first working medium pump and the mass flowmenter.
Gas-liquid two-phase cold-producing medium experiment parameter after the control of electric heating heat exchanger 3 throttling.Splitter inlet temperature passes through
The electric heating heat exchanger 3 controls, and splitter inlet pressure is adjusted by 1 frequency of the first working medium pump and controlled, and current divider enters
Mouth flow is adjusted by the regulating valve 12.Gas-liquid refrigerant flows through the quality stream under the conveying of the working medium pump 1
Meter 2 enters experiment test section through the electric heating evaporator 3 and heating, and visual inspection is arranged in experiment test section front
The current divider 4 of different types is installed and is tested for the property in experiment test section by pipeline section, and gas-liquid two-phase cold-producing medium passes through
The current divider 4 enters the simulation evaporator 6 after shunting, and carries out in the simulation evaporator 6 to the refrigerant after shunting
Heating, liquid refrigerant evaporating completely.Gas refrigerant after evaporation enters the superheat section evaporator 8, and the superheat section steams
Hair device 8 heats single phase gas.The single phase gas come out from the superheat section evaporator 8 enters condenser 10 and discharges heat
It is condensed into liquid, into the liquid storage device 11, the liquid refrigerant of the liquid storage device liquid outlet 11b outflow enters supercooling heat exchange
Device 12 is subcooled, and is conveyed by working medium pump 1, and closed cycle is completed.The thermostatic water bath 13 is condenser 10 and liquid storage device 11
Carry out cooling supply.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of shunting performance testing experimental system influenced by the non-homogeneous heat exchange in downstream, which is characterized in that including the first working medium
Pump, mass flowmenter, electric heating heat exchanger, current divider, partial flows channel, simulation evaporator, liquid-sighting glass, superheat section evaporation
Device, condenser, liquid storage device, crosses cold heat exchanger, thermostatic water bath, the first regulating valve and sampling valve at level header；First working medium
One end of pump is connect with one end of the mass flowmenter, the other end of the mass flowmenter and the electric heating heat exchanger
One end connection, the other end of the electric heating heat exchanger are connected with one end of the sampling valve, the sampling valve other end and institute
State current divider connection, the current divider includes the partial flows channel of a plurality of parallel connection, every partial flows channel and
The sampling valve connection, the other end in the partial flows channel are connect with one end of the simulation evaporator, and the simulation is steamed
The other end of hair device is connect with one end of the liquid-sighting glass, one end of the other end of the liquid-sighting glass and the superheat section evaporator
Connection, the other end of the analog section evaporator are connect with one end of the level header, and the level header connects another
End is connect with one end of the condenser, and the condenser other end is connect with liquid storage device, and the liquid storage device includes gas vent
And liquid outlet, the liquid storage device liquid outlet is connect with described one end for crossing cold heat exchanger, described to cross the cold heat exchanger other end
It is connect with one end of the liquid-sighting glass, the other end of the liquid-sighting glass is connect with first working medium pump, forms closed cycle.
2. the shunting performance testing experimental system according to claim 1 influenced by the non-homogeneous heat exchange in downstream, feature exist
In one end of the thermostatic water bath is connect with one end of the second working medium pump, the other end of second working medium pump and the condensation
Device connection, the condenser are connect with the thermostatic water bath, form closed cycle.
3. the shunting performance testing experimental system according to claim 1 influenced by the non-homogeneous heat exchange in downstream, feature exist
In being equipped with first regulating valve between first working medium pump and the mass flowmenter.
4. the shunting performance testing experimental system according to claim 1 influenced by the non-homogeneous heat exchange in downstream, feature exist
In equipped with reserved oiling device between the mass flowmenter and the electric heating heat exchanger, the reserved oiling device includes
Oil conservator, the second regulating valve and third regulating valve；The both ends of the oil conservator pass through second regulating valve and third tune respectively
Section valve is connected on the pipeline between mass flowmenter and the electric heating heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910457614.5A CN110082066A (en) | 2019-05-29 | 2019-05-29 | The shunting performance testing experimental system influenced by the non-homogeneous heat exchange in downstream |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910457614.5A CN110082066A (en) | 2019-05-29 | 2019-05-29 | The shunting performance testing experimental system influenced by the non-homogeneous heat exchange in downstream |
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| Publication Number | Publication Date |
|---|---|
| CN110082066A true CN110082066A (en) | 2019-08-02 |
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| CN201910457614.5A Pending CN110082066A (en) | 2019-05-29 | 2019-05-29 | The shunting performance testing experimental system influenced by the non-homogeneous heat exchange in downstream |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1228528A (en) * | 1998-12-30 | 1999-09-15 | 西安交通大学 | Divided-flow split-phase type two-phase fluid flow measuring method |
| CN101368775A (en) * | 2008-10-08 | 2009-02-18 | 天津商业大学 | Natural circulation gravity force liquid-supply evaporator |
| CN203324026U (en) * | 2013-06-13 | 2013-12-04 | 珠海格力电器股份有限公司 | Liquid separator detecting device |
| CN106157763A (en) * | 2016-08-26 | 2016-11-23 | 上海理工大学 | Biphase boiling experiment porch in the single tube of small-bore |
| CN106461296A (en) * | 2014-05-19 | 2017-02-22 | 三菱电机株式会社 | Air-conditioning device |
| CN107064832A (en) * | 2017-03-30 | 2017-08-18 | 中国科学院合肥物质科学研究院 | Superconducting conductor critical current and shunt temperature test device |
| CN210089973U (en) * | 2019-05-29 | 2020-02-18 | 天津商业大学 | Shunting performance test experimental system influenced by downstream non-uniform heat exchange |
-
2019
- 2019-05-29 CN CN201910457614.5A patent/CN110082066A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| CN1228528A (en) * | 1998-12-30 | 1999-09-15 | 西安交通大学 | Divided-flow split-phase type two-phase fluid flow measuring method |
| CN101368775A (en) * | 2008-10-08 | 2009-02-18 | 天津商业大学 | Natural circulation gravity force liquid-supply evaporator |
| CN203324026U (en) * | 2013-06-13 | 2013-12-04 | 珠海格力电器股份有限公司 | Liquid separator detecting device |
| CN106461296A (en) * | 2014-05-19 | 2017-02-22 | 三菱电机株式会社 | Air-conditioning device |
| CN106157763A (en) * | 2016-08-26 | 2016-11-23 | 上海理工大学 | Biphase boiling experiment porch in the single tube of small-bore |
| CN107064832A (en) * | 2017-03-30 | 2017-08-18 | 中国科学院合肥物质科学研究院 | Superconducting conductor critical current and shunt temperature test device |
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| Title |
|---|
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