CN108760807A - A kind of Cabinet heat transfer coefficient test system and method - Google Patents
A kind of Cabinet heat transfer coefficient test system and method Download PDFInfo
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- CN108760807A CN108760807A CN201810886444.8A CN201810886444A CN108760807A CN 108760807 A CN108760807 A CN 108760807A CN 201810886444 A CN201810886444 A CN 201810886444A CN 108760807 A CN108760807 A CN 108760807A
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- 238000012546 transfer Methods 0.000 title claims abstract description 32
- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 24
- 238000010998 test method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000021186 dishes Nutrition 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Abstract
The invention discloses a kind of Cabinet heat transfer coefficients to test system, which includes：Climatic chamber, temperature sensor, moisture recorder, PTC thermistor, fan, regulating member, power meter, the climatic chamber are controlled for housing Cabinet to be measured in predetermined temperature；The regulating member is arranged in cabinet to be measured, it is provided with several PTC thermistors, at least one fan, for automatically adjusting and fixing the specific position of PTC thermistor, fan in Cabinet to be measured, the specific position is the position for keeping in-cabinet temperature uniformity best, the temperature sensor setting multiple positions in Cabinet to be measured and/or outside Cabinet to be measured, communicate with moisture recorder and connect；Power meter is arranged outside climatic chamber, is electrically connected with PTC thermistor, fan, and the electric energy for detecting PTC thermistor, fan consumption can accurately measure the complex heat transfer coefficient of cabinet through the invention.
Description
Technical field
It is tested the present invention relates to technical field of measurement and test more particularly to a kind of complex heat transfer coefficient to Cabinet
Method and system.
Background technology
Since ambient temperature has larger impact to the working condition of electronic equipment and accumulator, removed in Cabinet
Outside the necessary energy consumption of communication equipment, the Temperature-controlled appliances such as air-conditioning, heating plate can consume most of energy, to improve temperature control effect
Rate reduces energy consumption, claims to the complex heat transfer coefficient of cabinet.According to China Mobile's company standard《Base station outdoor standard
Cabinet equipment specification》, use steady state method test cabinet complex heat transfer coefficient.Existing cabinet complex heat transfer coefficient tests system
Electric heater is set in cabinet to be measured, electric heater is controlled by the temperature sensor in cabinet, when temperature is less than 23 DEG C, heating
Start, otherwise heating stops.The system is there are heating period and the fluctuation of non-heated phase temperature are larger, and the if temperature used
It is not high to spend sensor accuracy, is susceptible to too high or too low for temperature, and electric heater discontinuously works, and power attenuation also is difficult to
It measures, it is inaccurate so as to cause the test to complex heat transfer coefficient.On the other hand, for base station Cabinet, usually
2000 × 800 × 800mm (high × wide × deep), narrow space is extremely difficult to the substantially uniformity of internal temperature by fan.
That there is also Resistant heating efficiency is low, electric heating is dangerous, can also be because waste heat leads to temperature after Resistant heating power-off
Fluctuate technical problem that is bigger and causing test result inaccuracy.
All it is manual placement, positioning in the prior art when the heater inside and outside setting cabinet to be measured, fan, the whole series are
It unites when after detection starts as found that the position placed leads to poor temperature uniformity, it is also necessary to open experiment cabinet, open machine to be measured
Cabinet is reapposed, is positioned, and also needs to heat cooling in release cabinet in the process, very troublesome, and time-consuming.
Invention content
In view of the above problems, it is proposed that the present invention overcoming the above problem in order to provide one kind or solves at least partly
State the material and method of problem.One aspect of the present invention provides a kind of Cabinet complex heat transfer coefficient test system, should
System includes：Climatic chamber, temperature sensor, moisture recorder, PTC thermistor, fan, regulating member, power meter, the gas
Room is waited for housing Cabinet to be measured, is controlled in predetermined temperature；The regulating member is arranged in cabinet to be measured, is arranged thereon
There are several PTC thermistors, at least one fan, for automatically adjusting and fixing PTC thermistor, fan in outdoor to be measured
Specific position in cabinet, the specific position are the position for keeping in-cabinet temperature uniformity best, and the temperature sensor is set
Multiple positions in Cabinet to be measured and/or outside Cabinet to be measured are set, communicates and connect with moisture recorder, power meter is set
It sets outside climatic chamber, is electrically connected with PTC thermistor, fan, the electric energy for detecting PTC thermistor, fan consumption.
Optionally, which includes controller, is arranged outside climatic chamber, and controling adjustment device and thermograph are used for
Instrument.
Optionally, the regulating member includes：Motor, chain and holder, the controller control motor operating, drive
Chain is moved on holder to carry out position adjustment to PTC thermistor, fan.
Optionally, the quantity of the motor is 2, is operated respectively, the position for adjusting separately PTC thermistor, fan
It sets.
The present invention also provides a kind of test method for testing system using Cabinet complex heat transfer coefficient above-mentioned, the party
Method includes：
Cabinet to be measured is arranged in large-scale climatic chamber, regulating device is arranged in Cabinet to be measured；It is to be measured
A number of temperature sensor is arranged in precalculated position in the outer large-scale climatic chamber of Cabinet and in Cabinet to be measured；Profit
The position of PTC thermistor, fan in cabinet to be measured in cabinet to be measured is automatically adjusted with controller controling adjustment device；Setting
The temperature of large-scale climatic chamber；It is powered for PTC thermistor, fan；After PTC thermistor is stablized, temperature is recorded at predetermined time intervals
Remember that instrument records a temperature data, power meter records a total power consumption data；According to the temperature data of record and total power consumption data
Numerical heat transfer coefficient.
Optionally, according to the temperature data of record and total power consumption number Numerical heat transfer coefficient, specially according to following formula meters
Calculate heat transfer coefficient：
Wherein, K is overall heat-transfer coefficient, and A is the standard cabinet inner surface name gross area,It is flat outside standard cabinet
Equal temperature,For mean temperature in standard cabinet,For average total power consumption.
The technical solution provided in the embodiment of the present application, has at least the following technical effects or advantages：The present invention does not need
Additional temperature controller, PID, relay etc., temperature precise control will not generate drift phenomenon at any time, and the temperature difference is small；The present invention can
To automatically adjust fan, the position of heater, it is best to reach tested in-cabinet temperature uniformity, need not open gas every time
It waits room (first cool down, then heat up), it is energy saving, it saves time, it is convenient.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, below the special specific implementation mode for lifting the present invention.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 shows the structure chart according to test system proposed by the present invention；
Fig. 2 shows the test method flow charts for utilizing test system proposed by the present invention.
Specific implementation mode
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Normative document《Base station outdoor standard cabinet equipment code》In to the complex heat transfer coefficient energy of base station cabinet equipment
With being distinctly claimed, standard cabinet is eated dishes without rice or wine to close with door, is placed in low-temperature test cabinet, standard cabinet outer surface distance
The inner wall distance of experiment cabinet is not less than 600mm.Air inside and outside standard cabinet should flow.Gas at standard cabinet surface
Flow velocity degree is not greater than 2m/s.Several thermocouple thermometers are arranged inside and outside standard cabinet.When experiment, by the temperature of experiment cabinet by
It gradually slowly turns down to -32 DEG C, standard cabinet is interior to be heated up to 23 DEG C with electric heater, makes the temperature in the outer experiment cabinet of standard cabinet
It is maintained at -32 DEG C ± 2 DEG C.Mean temperature difference is not less than 55 DEG C inside and outside cabinet.If in 30 minutes, the outer any two point of standard cabinet
Between and standard cabinet in the temperature difference between any two measuring point be not more than 2 DEG C, cabinet interior power total power consumption rate undulating value no more than ±
When 2.5%, that is, start to read.One group of data of every 15 minutes later records, including each measuring point temperature, electric appliance in standard cabinet
Total power consumption etc. records four group number-readings altogether, finally Numerical heat transfer coefficient again.It is accurate in order to obtain in order to meet above-mentioned standard requirement
Test result, spy propose the present invention.
The present invention provides a kind of Cabinet complex heat transfer coefficient test system, as shown in Figure 1, the system includes：Weather
Room, temperature sensor, moisture recorder, PTC thermistor, fan, regulating member, power meter, the climatic chamber is for housing
Cabinet to be measured is controlled in predetermined temperature；The regulating member is arranged in cabinet to be measured, is provided with several PTC
Thermistor, at least one fan, for automatically adjusting and fixing the spy of PTC thermistor, fan in Cabinet to be measured
Positioning is set, and the specific position is the position for keeping in-cabinet temperature uniformity best, and the temperature sensor is arranged in room to be measured
Multiple positions in outer cabinet and/or outside Cabinet to be measured, communicate with moisture recorder and connects, power meter setting is in climatic chamber
Outside, it is electrically connected with PTC thermistor, fan, the electric energy for detecting PTC thermistor, fan consumption.
The present invention devises a kind of novel test system using ptc heater, which includes：Large-scale climatic chamber,
Temperature sensor and recorder, power meter, fan, regulating device, the test philosophy used are：In this test method, protect
The temperature for holding tested cabinet inside and outside is constant, is uniformly crucial.Based on this, the temperature outside cabinet to be measured is by large-scale climatic chamber
It controls, selects the climatic chamber that space is larger, temperature accuracy is high as a preferred implementation manner,.Heating in cabinet to be measured
It is realized using PTC resistor, it is the PTC resistor of specific temperature to select Curie temperature.And the temperature uniformity on the inside of cabinet passes through
Adjust PTC resistor, the position of fan is realized.
PTC resistor has heating, sensing and control triple functions, that is, has three kinds of sensing element, heater and switch work(concurrently
Energy (PTC resistor has the title of " thermoswitch ").Precipitous temperature/resistance feature of PTC is mainly utilized in this.In Curie temperature
Nearby, PTC resistance values can rise sharply the 3-6 order of magnitude point, can be as the extremely accurate temp control switch use of a set point temperature.
Electric current after PTC resistor element by causing temperature to increase, i.e. the temperature rise of heater, after more than Curie-point temperature, resistance
Increase, increases to limit electric current, the then decline of electric current causes component temperature to reduce, and the reduction of resistance value makes circuital current again
Increase, component temperature increases, and in cycles, therefore has the function of keeping the temperature at particular range, and play on-off action.
Regulating member includes drivable moving parts, and PTC thermistor, fan is arranged on moving parts, passes through driving
Moving parts moves, and drives PTC thermistor, fan movement to adjust its position in cabinet to be measured, it is made to be adjusted to energy
Enough ensure the best position of in-cabinet temperature uniformity to be measured.
Testing procedure using test system proposed by the invention is as follows：
Temperature sensor and recorder, power meter, fan, regulating device are arranged by Fig. 1；
Set large-scale climatic chamber to -32 DEG C of low temperature, the PTC resistor of heating does not have to setting；
The position of PTC resistor, fan in cabinet is adjusted by regulating device, in-cabinet temperature uniformity is made to obtain best effective
Fruit；
It is powered to PTC, after PTC temperature stabilization, in-cabinet temperature reaches stable,
(15min) records a data at regular intervals, and the data of record include the power attenuation number of power meter record
According to the temperature data recorded with moisture recorder；
According to the above-mentioned data Numerical heat transfer coefficient of record.
The system includes controller as a preferred implementation manner, is arranged outside climatic chamber, and controling adjustment device is used for
And moisture recorder, power meter.Movable part is provided in regulating device, and need adjust position PTC thermistor,
Fan is just arranged on movable part, by adjusting movable part, completes the tune to the position of PTC thermistor, fan
It is whole.The movement of the movable part of controller controllable adjustable device, control moisture recorder record temperature data, control power
Meter measures power loss data, and can obtain recorded temperature data and power loss data, with according to above-mentioned data into
The calculating of row complex heat transfer coefficient.
The regulating member includes as a preferred implementation manner,：Motor, chain and holder, fan, PTC resistor
Be arranged on chain, controller control motor operating, drive chain to be moved on holder with to PTC thermistor, fan into
Line position sets adjustment.
As other embodiments, regulating member includes sliding rail, and moving parts is sliding block, and fan, PTC resistor setting are slided
On block, position adjustment is carried out to PTC thermistor, fan by driving the movement of sliding block.
Driving device is motor, and optionally, the quantity of the motor is 2, operates respectively, can be used for adjusting separately PTC
The position of thermistor, fan.
The present invention also provides a kind of test methods for testing system using Cabinet complex heat transfer coefficient above-mentioned, such as scheme
Shown in 2, this method includes：
S1. advancing equipment：Cabinet to be measured is arranged in large-scale climatic chamber, regulating device is arranged in outdoor to be measured
In cabinet；A number of temperature is arranged in precalculated position in the outer large-scale climatic chamber of Cabinet to be measured and in Cabinet to be measured
Spend sensor；
S2. PTC thermistor, fan are powered and are mounted in regulating device, and be powered for PTC thermistor, fan；
S3. using PTC thermistor, fan in controller controling adjustment device automatic adjustment cabinet to be measured in cabinet to be measured
Interior position, it is best to reach temperature uniformity；
S4. the temperature of large-scale climatic chamber is set；
S5. in cabinet to be measured after equilibrium temperature, temperature note instrument is recorded at predetermined time intervals and records a temperature data, power meter
Record a total power consumption data；
S6. according to the temperature data of record and total power consumption data Numerical heat transfer coefficient.
Optionally, according to the temperature data of record and total power consumption number Numerical heat transfer coefficient, specially according to following formula meters
Calculate heat transfer coefficient：
Wherein, K is overall heat-transfer coefficient, and unit can be W/ (m2·℃)；A is the standard cabinet inner surface name gross area
m2；,For mean temperature outside standard cabinet,For mean temperature in standard cabinet, unit is DEG C；For average total work
Consumption, unit W.
Present invention utilizes the sensitive characteristic of PTC resistor, Curie temperature dot characteristics and precipitous temperature/resistance feature,
The multi-functional for having played PTC resistor can be the inside of cabinet to be measured instead of widely used resistance wire in the prior art
The heating for stablize safety inherently can only be controlled by being powered instead of temperature controller, the PTC resistor applied in the prior art
The temperature of itself maintains a determined temperature point, inherently acts as the effect of temperature sensing and switch.
As another specific implementation mode, test method includes below step：
S1 ' advancing equipments：Cabinet to be measured is arranged in large-scale climatic chamber, regulating device is arranged in room to be measured
In outer cabinet；Precalculated position in the outer large-scale climatic chamber of Cabinet to be measured and in Cabinet to be measured is arranged a number of
Temperature sensor；
S2 ' by air-flow simulation softward calculate temperature uniformity it is best when PTC thermistor, the installation site of fan
PTC thermistor, fan are powered according to the result of S2 and are mounted in regulating device by S3 ', and are PTC temperature-sensitive electricity
Resistance, fan are powered；
S4 ' automatically adjust PTC temperature-sensitives in cabinet to be measured according to test actual conditions, using controller controling adjustment device
The position of resistance, fan in cabinet to be measured, it is best to reach temperature uniformity；
S5 ' set the temperature of large-scale climatic chamber and unlatching；
Test system reaches in cabinet to be measured after equilibrium temperature after S6 ' .PTC thermistors are stablized, and records at predetermined time intervals
Temperature remembers that instrument records a temperature data, and power meter records a total power consumption data；
S7 ' are according to the temperature data and total power consumption data Numerical heat transfer coefficient of record.
The technical solution provided in the embodiment of the present application, has at least the following technical effects or advantages：
Additional temperature controller, PID, relay etc. are not needed；
PTC element set point temperature is very accurate, set point temperature i.e. its Curie point, and it is existing that it will not generate drift at any time
As the temperature difference is small.
The PTC efficiencies of heating surface are high, improve test accuracy.
Reliability is high, and safety is good, long lifespan.
Since the thermal response time of PTC element is very short, temperature control performance is improved.
Present invention uses regulating devices, can automatically adjust fan, and the position of heater need not open weather every time
Room (first cools down, then heats up), energy saving, saves time, convenient.
By air-flow simulation softward calculate temperature uniformity it is best when PTC thermistor, the installation site of fan can
Convenient for automatically determining the position of PTC thermistor, fan in cabinet to be measured, convenient for the progress of experiment.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that the implementation of the present invention
Example can be put into practice without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this description.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of each inventive aspect,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：It is i.e. required to protect
Shield the present invention claims the more features of feature than being expressly recited in each claim.More precisely, as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific implementation mode are expressly incorporated in the specific implementation mode, wherein each claim itself
All as a separate embodiment of the present invention.
It should be noted that the present invention will be described rather than limits the invention for above-described embodiment, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference mark between bracket should not be configured to limitations on claims.
Claims (6)
1. a kind of Cabinet complex heat transfer coefficient tests system, which is characterized in that the system includes：Climatic chamber, temperature sensing
Device, moisture recorder, PTC thermistor, fan, regulating member, power meter, the climatic chamber is for housing outdoor unit to be measured
Cabinet is controlled in predetermined temperature；The regulating member is arranged in cabinet to be measured, is provided with several PTC thermistors, extremely
A few fan, it is described for automatically adjusting and fixing the specific position of PTC thermistor, fan in Cabinet to be measured
Specific position is the position for keeping in-cabinet temperature uniformity best, the temperature sensor be arranged in Cabinet to be measured and/
Or multiple positions outside Cabinet to be measured, it communicates and connect with moisture recorder, power meter is arranged outside climatic chamber, with PTC heat
Quick resistance, fan are electrically connected, and are powered to PTC thermistor, fan by it for detecting and are detected the work(in cabinet to be measured
Rate is lost.
2. system according to claim 1, it is further characterized in that, which includes controller, is arranged outside climatic chamber, is used
In controling adjustment device and moisture recorder.
3. system according to claim 1, it is further characterized in that, the regulating member includes：Motor, chain and branch
Frame, the controller control motor operating drive chain to be moved on holder to carry out position tune to PTC thermistor, fan
It is whole.
4. system according to claim 3, it is further characterized in that, the quantity of the motor is 2, operates, is used for respectively
Adjust separately PTC thermistor, fan position.
5. a kind of test method for being tested system using Cabinet complex heat transfer coefficient described in claim 1, feature are existed
In this method includes：
Cabinet to be measured is arranged in large-scale climatic chamber, regulating device is arranged in Cabinet to be measured；Outdoor to be measured
A number of temperature sensor is arranged in precalculated position in the outer large-scale climatic chamber of cabinet and in Cabinet to be measured；
The position of PTC thermistor, fan in cabinet to be measured in cabinet to be measured is automatically adjusted using controller controling adjustment device
It sets；
The temperature of the large-scale climatic chamber of setting；
It is powered for PTC thermistor, fan；
After PTC thermistor is stablized, temperature note instrument is recorded at predetermined time intervals and records a temperature data, power meter record is primary total
Power consumption data；
According to the temperature data of record and total power consumption data Numerical heat transfer coefficient.
6. test method according to claim 6, according to the temperature data of record and total power consumption data Numerical heat transfer coefficient,
Specially according to following formula Numerical heat transfer coefficients：
Wherein, K is overall heat-transfer coefficient, and A is the standard cabinet inner surface name gross area,For average temperature outside standard cabinet
Degree,For mean temperature in standard cabinet,For average total power consumption.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810886444.8A CN108760807A (en) | 2018-08-06 | 2018-08-06 | A kind of Cabinet heat transfer coefficient test system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810886444.8A CN108760807A (en) | 2018-08-06 | 2018-08-06 | A kind of Cabinet heat transfer coefficient test system and method |
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Family
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| CN201810886444.8A Pending CN108760807A (en) | 2018-08-06 | 2018-08-06 | A kind of Cabinet heat transfer coefficient test system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110099546A (en) * | 2019-04-18 | 2019-08-06 | 东南大学 | A kind of data center server cabinet hot localised points elimination system and method |
| WO2020186539A1 (en) * | 2019-03-18 | 2020-09-24 | 中认英泰检测技术有限公司 | Product performance test method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020186539A1 (en) * | 2019-03-18 | 2020-09-24 | 中认英泰检测技术有限公司 | Product performance test method and system |
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| CN110099546A (en) * | 2019-04-18 | 2019-08-06 | 东南大学 | A kind of data center server cabinet hot localised points elimination system and method |
| CN110099546B (en) * | 2019-04-18 | 2021-03-23 | 东南大学 | System and method for eliminating local hot spots of data center server cabinet |
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