CN107179205A - A kind of frosting cloud test method and system - Google Patents
A kind of frosting cloud test method and system Download PDFInfo
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- CN107179205A CN107179205A CN201710423696.2A CN201710423696A CN107179205A CN 107179205 A CN107179205 A CN 107179205A CN 201710423696 A CN201710423696 A CN 201710423696A CN 107179205 A CN107179205 A CN 107179205A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a kind of frosting cloud test method and system, for polycyclic pipeline heat exchanger outside air source heat pump room, method includes：The thermometer for the import and export position for being respectively arranged at each heat exchanger loop is obtained, the temperature difference Δ T of the import and export position of each heat exchanger loop is inscribed in the temperature registration of synchronization, and when calculating this；According to each heat exchange manifold temperature difference Δ T frosting mass M that each corresponding heat exchanger loop is calculated by logical operation, compare the frosting mass M size of each heat exchanger loop, and maximum therein and minimum value are chosen, calculating obtains frosting uniformity FEV.This method only needs to carry out the measure of a small number of related physical quantities, mensuration mode is simple, and do not need sufficiently bulky device accurately to be measured relatively, air source heat pump termination work is not needed in measurement process, the technical problem of the measure for the frosting uniformity for how carrying out air source heat pump is efficiently solved.
Description
Technical field
The present invention relates to air conditioner technical field, more specifically to a kind of frosting cloud test method, it is used for
Polycyclic pipeline heat exchanger outside air source heat pump room, further relates to a kind of frosting cloud test system.
Background technology
Heat pump is a kind of device of heat energy transfer by low level heat energy to high-order thermal source.It is empty as one kind of heat pump techniques
Air supply heat pump drives compressor operation, with reality using the energy in ubiquitous air as thermal source by a small amount of external electric energy
Existing energy transfer and energy level lifting, are that current country " energy-conservation and environmental protection " is high with many advantages such as energy-conserving and environment-protective, convenient and efficients
The representative of new technological industry.
Due to advantage described above, air source heat pump is widely used in the heat supply of building and refrigeration all over the world.So
And, when winter air source heat pump is run on supplying thermal condition in the environment of low temperature and high relative humidity, knot occurs in its outdoor evaporator surface
The phenomenon of frost.The formation and thickening of frost layer add the thermal conduction resistance between air and coil pipe, while the frost layer of accumulation seriously hinders
The air mass flow for flowing through heat exchanger has been kept off, so as to be degrading the runnability of air source heat pump, or even air source heat pump can have been damaged
System is in itself.
At present, reverse cycle defrosting method is the wide variety of Defrost method of air source heat pump.Pass through air source heat pump four-way
Reversal valve commutate, start refrigerant reverse cycle defrosting, indoor heat exchanger from the condenser under Heating State be converted to evaporator to
Indoor acquisition heat, outdoor heat exchanger is converted to condenser to outdoor release heat from the evaporator under Heating State, release
Heat defrosting is water.
However, while this process causes energy consumption, the hot comfort of indoor environment is degrading again.To keep air source heat pump
Superperformance, and make reverse cycle defrosting produce adverse effect minimize, during for frosting frost layer be distributed uniformity carry out
The defrosting control of " shooting the arrow at the target " just seems extremely important.
Before this, the method that researcher develops a variety of direct measurement frosting degree, such as microscopic method, low-energy laser
Method, micrometer method and infrared camera method, but because instrument size is improper, or equipment cost is too high, these methods are in reality
All it is not used widely in the application of border.
In summary, the frosting uniformity for how efficiently solving the air source heat pump with outdoor polycyclic pipeline heat exchanger is surveyed
It is fixed, it is current those skilled in the art's urgent problem to realize the optimization of air source heat pump control strategy.
The content of the invention
In view of this, first purpose of the invention is to provide a kind of frosting cloud test method, effectively to solve
The measure of the frosting uniformity of the air source heat pump with outdoor polycyclic pipeline heat exchanger certainly how is carried out, to realize air source heat pump
The optimization of control strategy, second object of the present invention is to provide a kind of frosting cloud test system.
In order to reach above-mentioned first purpose, the present invention provides following technical scheme：
A kind of frosting cloud test method, for polycyclic pipeline heat exchanger outside air source heat pump room, including：
The thermometer for the import and export position for being respectively arranged at each heat exchanger loop is obtained, is shown in the temperature of synchronization
Number, and the temperature difference Δ T of the import and export position of each heat exchanger loop is inscribed when calculating this；
Each corresponding heat exchanger loop is calculated by logical operation according to each heat exchange manifold temperature difference Δ T
Frosting mass M,
M=f (Δ T),
F (Δ T) is the respective function between frosting mass M and heat exchange manifold temperature difference；
Compare the frosting mass M size of each heat exchanger loop, and choose maximum therein and minimum value, calculating is obtained
Frosting uniformity FEV：
Wherein, MMINFor the minimum value in the frosting quality of each heat exchanger loop, MMAXFor the knot of each heat exchanger loop
Maximum in white quality.
It is preferred that, in above-mentioned frosting cloud test method, in addition to respective function is concluded in advance：
The polycyclic pipeline heat exchanger outside air source heat pump room to be measured is determined at different operating moment, each various heat exchange device pipeline
The quality of upper frosting, and corresponding heat exchange manifold import and export the temperature difference of position, and pass through data measured summary and induction knot
Respective function between white quality and heat exchange manifold temperature difference.
It is preferred that, in above-mentioned frosting cloud test method, the advance conclusion respective function also includes：
When the polycyclic pipeline heat exchanger outside air source heat pump room to be measured worked to certain moment, and when there is frosting situation, survey
The temperature difference of the import and export position of now each heat exchanger loop is obtained, and closes the frosting work of polycyclic pipeline heat exchanger, knot is waited
It is white all to melt, and record the quality and the fin of each heat exchanger loop of water-supporting disc reclaimed water below each heat exchanger loop
On the quality that is got wet, and the corresponding pallet water quality of each heat exchanger loop and fin water quality added and, obtain each not
The gross mass of water is obtained with heat exchange manifold frost melts, the quality of frosting on heat exchange manifold is as corresponded to.
It is preferred that, in above-mentioned frosting cloud test method, got wet on the fin for recording each heat exchanger loop
The mode of quality be：
Drawn and got wet on fin by the absorbent wool weighed in advance, and the quality subduction absorbent wool that will weigh after weighing
Deadweight.
It is preferred that, in above-mentioned frosting cloud test method, frosting work that is described and closing polycyclic pipeline heat exchanger is waited
Frosting is all melted, including：
After the frosting work preset time for closing polycyclic pipeline heat exchanger, commutated by four-way reversing valve, make many loops
Heat exchanger enters reverse cycle defrosting pattern, after determining each heat exchanger loop outlet temperature and reaching room temperature, terminates inverse circulation
Defrosting.
The frosting cloud test method provided using the present invention, for polycyclic pipeline heat exchanger outside air source heat pump room, bag
Include：
The thermometer for the import and export position for being respectively arranged at each heat exchanger loop is obtained, is shown in the temperature of synchronization
Number, and the temperature difference Δ T of the import and export position of each heat exchanger loop is inscribed when calculating this；
Each corresponding heat exchanger loop is calculated by logical operation according to each heat exchange manifold temperature difference Δ T
Frosting mass M,
M=f (Δ T),
F (Δ T) is the respective function between frosting mass M and heat exchange manifold temperature difference；
Compare the frosting mass M size of each heat exchanger loop, and choose maximum therein and minimum value, calculating is obtained
Frosting uniformity FEV：
Wherein, MMINFor the minimum value in the frosting quality of each heat exchanger loop, MMAXFor the knot of each heat exchanger loop
Maximum in white quality.
Using this frosting cloud test method in technical scheme in the present invention, it is only necessary to carry out a few related
The measure of physical quantity, most important data measured is heat exchanger loop out temperature, and mensuration mode is simple, and does not need volume very
Big device can be measured accurately relatively, and air source heat pump termination work is not needed in measurement process, passes through air-source
Knowable to the derivation of heat pump frosting principle, in the case where ignoring the outdoor temp environment fine difference residing for each heat exchanger loop, respectively
The heat exchange amount size that individual loop frosting degree size can be produced by each loop is characterized, and each loop heat exchange amount size is direct
The refrigerant temperature difference that as loop imports and exports position is embodied, therefore the temperature difference that can import and export position by heat exchanger loop relatively be defined
It is true reflect the loop may frosting degree size so as to obtain accurate system frosting uniform by comparing calculating
Degree；This method realize easily, it is necessary to measurement apparatus it is relatively simple, cost is low and occupy-place is smaller, and realizes the process of measure
The work of heat-pump apparatus need not be stopped, therefore the measure of the system frosting uniformity can be carried out in real time, be easy to system according to survey
The uniformity obtained carries out real-time working condition regulation, and the resource for optimizing air source heat pump is integrally allocated.Efficiently solve
How the measure of the frosting uniformity of air source heat pump with outdoor polycyclic pipeline heat exchanger is carried out, to realize air source heat pump control
Make the technical problem of the optimization of strategy etc..
In order to reach above-mentioned second purpose, present invention also offers a kind of frosting cloud test system, for air
Polycyclic pipeline heat exchanger outside the heat pump room of source, including：
Thermometer, the thermometer is respectively arranged at the turnover of polycyclic each loop of pipeline heat exchanger outside air source heat pump room to be measured
Mouth pipe wall position, the temperature for determining correspondence position, with the temperature difference Δ T for the import and export position for obtaining each heat exchanger loop；
Logical-arithmetic unit, for the temperature difference Δ T of the import and export position by each heat exchanger loop, with reference to what is pre-entered
Respective function between frosting mass M and heat exchange manifold temperature difference, calculates the frosting mass M for obtaining each heat exchanger loop；
And for comparing the frosting mass M size of each heat exchanger loop, and maximum therein and minimum value are chosen, calculating is tied
White uniformity FEV.
The frosting cloud test system can realize any of the above-described kind of frosting cloud test method.Due to above-mentioned knot
White cloud test method has above-mentioned technique effect, so the frosting cloud test system should also have corresponding technology effect
Really.
It is preferred that, in above-mentioned frosting cloud test system, in addition to：Quality measuring apparatus, for determining various heat exchange
The water-supporting disc quality of device loop, and fin condensate quality.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is frosting cloud test method flow schematic diagram provided in an embodiment of the present invention；
Fig. 2 is temperature, frost layer and the FEV corresponding table obtained using conclusion calculation provided in an embodiment of the present invention.
Embodiment
The embodiment of the invention discloses a kind of frosting cloud test method, for many loop heat exchange outside air source heat pump room
Device, with the measure for the frosting uniformity for solving how to carry out the air source heat pump with outdoor polycyclic pipeline heat exchanger, to carry out
The targetedly technical problem of defrosting work etc..
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, Fig. 1 is frosting cloud test method flow schematic diagram provided in an embodiment of the present invention.
Frosting cloud test method provided in an embodiment of the present invention, for polycyclic pipeline heat exchanger outside air source heat pump room,
Including：
S01:The thermometer for the import and export position for being respectively arranged at each heat exchanger loop is obtained, in the temperature of synchronization
Registration, and the temperature difference Δ T of the import and export position of each heat exchanger loop is inscribed when calculating this；
S02:Each corresponding heat exchanger ring is calculated by logical operation according to each heat exchange manifold temperature difference Δ T
The frosting mass M on road,
M=f (Δ T),
F (Δ T) is the respective function between frosting mass M and heat exchange manifold temperature difference；
S03:Compare the frosting mass M size of each heat exchanger loop, and choose maximum therein and minimum value, calculate
Obtain frosting uniformity FEV：
Wherein, MMINFor the minimum value in the frosting quality of each heat exchanger loop, MMAXFor the knot of each heat exchanger loop
Maximum in white quality.
Using this frosting cloud test method in technical scheme in embodiments of the invention, it is only necessary to carry out a small number of
The measure of several related physical quantities, most important data measured is heat exchanger loop out temperature, and mensuration mode is simple, and is not required to
Want sufficiently bulky device accurately to be measured relatively, air source heat pump termination work is not needed in measurement process, lead to
The derivation for crossing air source heat pump frosting principle is understood.
Its principle is mainly：Found by the research of inventor, ignoring the outdoor temp environment residing for each heat exchanger loop
In the case of fine difference, the heat exchange amount size that each loop frosting degree size can be produced by each loop is characterized；And it is each
Individual loop heat exchange amount size directly embodies as loop and imports and exports the refrigerant temperature difference of position, therefore can be entered by heat exchanger loop
The temperature difference of outlet port accurately reflects the size of the possible frosting degree of the loop, so as to be obtained more by comparing calculating
The accurate system frosting uniformity.
In addition it should be noted that the temperature of position of importing and exporting of each heat exchanger loop measured by this method is laminating
Exchange heat measured by tube wall, this temperature is consistent substantially with the temperature of internal refrigerant, therefore can replace direct measurement by the temperature
Refrigerant temperature, implements more convenient and easy.Thermometer species employed in the present embodiment is comprising a variety of, it is preferred to use thermocouple
As thermometer thermometric, it has small volume, and response measures accurate advantage soon.
This method realize easily, it is necessary to measurement apparatus it is relatively simple, cost is low and occupy-place is smaller, and realizes measure
Process need not stop the work of heat-pump apparatus, therefore can carry out the measure of the system frosting uniformity in real time, be easy to system root
Real-time working condition regulation is carried out according to the uniformity measured, the resource for optimizing air source heat pump is integrally allocated.Therefore, effectively
Ground solves the measure for the frosting uniformity for how carrying out the air source heat pump with outdoor polycyclic pipeline heat exchanger, to realize air
The technical problem of the optimization of source heat pump control strategy.
For further optimization above-mentioned technical proposal, preferred on the basis of above-described embodiment, the above-mentioned frosting uniformity is surveyed
Determine in method, in addition to conclude respective function in advance：
The polycyclic pipeline heat exchanger outside air source heat pump room to be measured is determined at different operating moment, each various heat exchange device pipeline
The quality of upper frosting, and corresponding heat exchange manifold import and export the temperature difference of position, and pass through data measured summary and induction knot
Respective function between white quality and heat exchange manifold temperature difference.
Wherein it should be noted that in order to above-described embodiment provide technical scheme it is easy to implement, beforehand through experiment
Conclude the respective function between acquisition frosting quality and heat exchange manifold temperature difference.It is by way of testing and realizing：Do not entering
Before the formal installation of row air source heat pump, realized in advance, under the operating mode for obtaining frosting, each heat exchanger loop is in some time
The out temperature inscribed is poor and corresponding frosting quality, in the principle according to heat exchanger frosting, it may be determined that frosting degree
On the premise of there is positive correlation with the heat exchanger inlet and outlet refrigerant temperature difference, pass through multigroup frosting quality and temperature difference data
The respective function that corresponding relation induction and conclusion goes out between frosting quality and heat exchange manifold temperature difference, specifically refers to accompanying drawing 2, figure
2 temperature obtained for the conclusion calculation provided by the present embodiment, frost layer and FEV corresponding tables.And by the correlation function with
In the controller of supplemental characteristic input air source heat pump system, to realize：In normal operation, the real time measure is directly passed through
The import and export temperature difference of heat exchanger loop, calculates frosting quality and further calculates the frosting uniformity, and control system accordingly
System carries out appropriate defrosting work.
For further optimization above-mentioned technical proposal, preferred on the basis of above-described embodiment, the above-mentioned frosting uniformity is surveyed
Determine in method, the advance conclusion respective function also includes：
When the polycyclic pipeline heat exchanger outside air source heat pump room to be measured worked to certain moment, and when there is frosting situation, survey
The temperature difference of the import and export position of now each heat exchanger loop is obtained, and closes the frosting work of polycyclic pipeline heat exchanger, knot is waited
It is white all to melt, and record the quality and the fin of each heat exchanger loop of water-supporting disc reclaimed water below each heat exchanger loop
On the quality that is got wet, and the corresponding pallet water quality of each heat exchanger loop and fin water quality added and, obtain each not
The gross mass of water is obtained with heat exchange manifold frost melts, the quality of frosting on heat exchange manifold is as corresponded to.
In the technical scheme that the present embodiment is provided, further refined on the basis of above-described embodiment and measured each heat exchange
The technical scheme of device loop frosting quality, simplify frosting quality measures mode, by frost melts Cheng Shui mass measurement,
Make the measurement of frosting quality more specific feasible；Wherein frost melts Cheng Shuihou, a part of water falls directly into the support water of lower section
In disk, another part water is bonded on the fin of loop, by measuring and adding respectively and obtain total Water；In addition institute in the embodiment
The polycyclic pipeline heat exchanger being related to worked to certain moment, and when there is frosting situation, in order to make frosting fully, preferably at 60 minutes
Measured after run time above；Frost melts are waited naturally to melt by pass hull closure or make equipment take conversely
Mode of operation be can be achieved defrost.
For further optimization above-mentioned technical proposal, preferred on the basis of above-described embodiment, the above-mentioned frosting uniformity is surveyed
Determine in method, the mode of the quality got wet on the fin for recording each heat exchanger loop is：
Drawn and got wet on fin by the absorbent wool weighed in advance, and the quality subduction absorbent wool that will weigh after weighing
Deadweight.
In the technical scheme that the present embodiment is provided, in order to make the defrosting water mass measurement being stained with fin be more prone to real
OK, the present embodiment is drawn absorbent wool and carries out check weighing on fin by way of moisture, and is conducted oneself with dignity by measuring absorbent wool in advance, and
Dead weight, which is subtracted, after gross weight after measurement water suction can obtain more accurate defrosting water weight.
For further optimization above-mentioned technical proposal, preferred on the basis of above-described embodiment, the above-mentioned frosting uniformity is surveyed
Determine in method, frosting work that is described and closing polycyclic pipeline heat exchanger waits frosting all to melt, including：
After the frosting work preset time for closing polycyclic pipeline heat exchanger, commutated by four-way reversing valve, make many loops
Heat exchanger enters reverse cycle defrosting pattern, after determining each heat exchanger loop outlet temperature and reaching room temperature, terminates inverse circulation
Defrosting.
Because air source heat pump equipment has outer machine heat exchanger defrosting function, in order to make defrost faster, whole experiment in itself
Process takes shorter, and is easier to exclude the influence of other environmental conditions, therefore directly enter inverse follow by polycyclic pipeline heat exchanger
Ring defrosting mode carries out defrost.
Based on the frosting cloud test method provided in above-described embodiment, present invention also offers a kind of frosting uniformity
Measurement system, the frosting cloud test system can realize the frosting cloud test method of any one in above-described embodiment,
So the beneficial effect of the frosting cloud test system refer to above-described embodiment.
Frosting cloud test system in the present embodiment, for polycyclic pipeline heat exchanger outside air source heat pump room, including：
Thermometer, the thermometer is respectively arranged at the turnover of polycyclic each loop of pipeline heat exchanger outside air source heat pump room to be measured
Mouth pipe wall position, the temperature for determining correspondence position, with the temperature difference Δ T for the import and export position for obtaining each heat exchanger loop；
Logical-arithmetic unit, for the temperature difference Δ T of the import and export position by each heat exchanger loop, with reference to what is pre-entered
Respective function between frosting mass M and heat exchange manifold temperature difference, calculates the frosting mass M for obtaining each heat exchanger loop；
And for comparing the frosting mass M size of each heat exchanger loop, and maximum therein and minimum value are chosen, calculating is tied
White uniformity FEV.
Wherein logical-arithmetic unit is preferably connected with storage device, storage basic relevant parameter such as frosting mass M and heat exchanger
Respective function between line temperature difference.
For further optimization above-mentioned technical proposal, preferred on the basis of above-described embodiment, the above-mentioned frosting uniformity is surveyed
Determine in system, in addition to：Quality measuring apparatus, the water-supporting disc quality for determining various heat exchange device loop, and fin condense
The quality of water.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (7)
1. a kind of frosting cloud test method, for polycyclic pipeline heat exchanger outside air source heat pump room, it is characterised in that including：
The thermometer for the import and export position for being respectively arranged at each heat exchanger loop is obtained, in the temperature registration of synchronization, and
The temperature difference Δ T of the import and export position of each heat exchanger loop is inscribed when calculating this；
According to each heat exchange manifold temperature difference Δ T frosting that each corresponding heat exchanger loop is calculated by logical operation
Mass M,
M=f (Δ T),
F (Δ T) is the respective function between frosting mass M and heat exchange manifold temperature difference；
Compare the frosting mass M size of each heat exchanger loop, and choose maximum therein and minimum value, calculating obtains frosting
Uniformity FEV：
<mrow>
<mi>F</mi>
<mi>E</mi>
<mi>V</mi>
<mo>=</mo>
<mfrac>
<msub>
<mi>M</mi>
<mrow>
<mi>M</mi>
<mi>I</mi>
<mi>N</mi>
</mrow>
</msub>
<msub>
<mi>M</mi>
<mrow>
<mi>M</mi>
<mi>A</mi>
<mi>X</mi>
</mrow>
</msub>
</mfrac>
<mo>&times;</mo>
<mn>100</mn>
<mi>%</mi>
<mo>,</mo>
</mrow>
Wherein, MMINFor the minimum value in the frosting quality of each heat exchanger loop, MMAXFor the frosting matter of each heat exchanger loop
Maximum in amount.
2. frosting cloud test method according to claim 1, it is characterised in that also including concluding correspondence letter in advance
Number：
The polycyclic pipeline heat exchanger outside air source heat pump room to be measured is determined to tie on the different operating moment, each various heat exchange device pipeline
The quality of frost, and corresponding heat exchange manifold import and export the temperature difference of position, and pass through data measured summary and induction frosting matter
Respective function between amount and heat exchange manifold temperature difference.
3. frosting cloud test method according to claim 2, it is characterised in that the advance conclusion respective function is also
Including：
When the polycyclic pipeline heat exchanger outside air source heat pump room to be measured worked to certain moment, and when there is frosting situation, measure this
When each heat exchanger loop import and export position temperature difference, and close polycyclic pipeline heat exchanger frosting work, wait frosting it is complete
Portion melts, and records institute on the quality of water-supporting disc reclaimed water below each heat exchanger loop and the fin of each heat exchanger loop
The quality got wet, and the corresponding pallet water quality of each heat exchanger loop and fin water quality are added and obtain each difference and change
Hot device pipeline frost melts obtain the gross mass of water, as correspond to the quality of frosting on heat exchange manifold.
4. frosting cloud test method according to claim 3, it is characterised in that described to record each heat exchanger loop
Fin on the mode of quality that is got wet be：
Drawn and got wet on fin by the absorbent wool weighed in advance, and quality subduction absorbent wool will be weighed after weighing certainly
Weight.
5. frosting cloud test method according to claim 4, it is characterised in that described and close polycyclic pipeline heat exchanger
Frosting work, wait frosting all melt, including：
After the frosting work preset time for closing polycyclic pipeline heat exchanger, commutated by four-way reversing valve, make many loop heat exchange
Device enter reverse cycle defrosting pattern, when determine each heat exchanger loop outlet temperature reach room temperature after, terminate reverse cycle defrosting.
6. a kind of frosting cloud test system, for polycyclic pipeline heat exchanger outside air source heat pump room, it is characterised in that including：
Thermometer, the thermometer is respectively arranged at the inlet/outlet pipe of polycyclic each loop of pipeline heat exchanger outside air source heat pump room to be measured
Wall position, the temperature for determining correspondence position, with the temperature difference Δ T for the import and export position for obtaining each heat exchanger loop；
Logical-arithmetic unit, for the temperature difference Δ T of the import and export position by each heat exchanger loop, with reference to the frosting pre-entered
Respective function between mass M and heat exchange manifold temperature difference, calculates the frosting mass M for obtaining each heat exchanger loop；It is used in combination
In comparing the frosting mass M size of each heat exchanger loop, and maximum therein and minimum value are chosen, it is equal that calculating obtains frosting
Evenness FEV.
7. frosting cloud test system according to claim 6, it is characterised in that also include：Quality measuring apparatus, is used
In the quality of the water-supporting disc quality for determining various heat exchange device loop, and fin condensate.
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| CN107166679A (en) * | 2017-06-22 | 2017-09-15 | 广东工业大学 | A kind of frosting cloud test method and system |
| CN117433109A (en) * | 2023-12-21 | 2024-01-23 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device and air conditioner unit |
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| 赵鹏 等: "竖直星型翅片管结霜的实验研究", 《低温技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166679A (en) * | 2017-06-22 | 2017-09-15 | 广东工业大学 | A kind of frosting cloud test method and system |
| CN117433109A (en) * | 2023-12-21 | 2024-01-23 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device and air conditioner unit |
| CN117433109B (en) * | 2023-12-21 | 2024-04-09 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device and air conditioner unit |
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Application publication date: 20170919 |