CN105403474A - Natural acceleration testing device and method of composite solid propellant - Google Patents
Natural acceleration testing device and method of composite solid propellant Download PDFInfo
- Publication number
- CN105403474A CN105403474A CN201510716538.7A CN201510716538A CN105403474A CN 105403474 A CN105403474 A CN 105403474A CN 201510716538 A CN201510716538 A CN 201510716538A CN 105403474 A CN105403474 A CN 105403474A
- Authority
- CN
- China
- Prior art keywords
- casing
- temperature
- air
- natural acceleration
- composite solidpropellant
- 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.)
- Granted
Links
Abstract
The invention provides a natural acceleration testing device and method of a composite solid propellant. The natural acceleration testing device comprises a rectangular testing box, wherein the testing box comprises a box body and a box cover; a forced ventilation cooling system is arranged on one side of the box body; a temperature and humidity control and data acquisition system is arranged at the outer part of the box body; and the box body is internally provided with a test sample rack. The natural acceleration testing device of the composite solid propellant, provided by the invention, can be arranged outdoors in a tropical ocean atmospheric environment, and can be obliquely arranged at a local latitude angle, so that the best heat absorption effect is realized; and a solar radiation heat effect and a day and night temperature difference impact effect are simulated and reinforced, and day and night temperature difference circulation of an environment temperature and season temperature difference circulation are kept, so that a change rule of mechanical properties of the composite solid propellant is really, accurately and rapidly obtained.
Description
Technical field
The present invention relates to a kind of acceleration test apparatus, particularly relate to a kind of natural acceleration test device for composite solidpropellant.The invention still further relates to a kind of natural acceleration test method of composite solidpropellant.
Background technology
Composite solidpropellant take macromolecule as the composite material containing energy of matrix, it has particular characteristic, being the energy of solid propellant rocket, there is chemical reaction and releases energy in its component within the engine, utilizes its reaction product to make engine produce certain thrust.Composite solidpropellant is in storage process, owing to being subject to the combined action of the factors such as complicated physics, chemistry, the reactions such as Post RDBMS, oxidation cross-linked, chain rupture may be there is in bonding agent superpolymer, its performance changes gradually and does not reach service index requirement, namely lose use value, therefore it is critical material and the weak link of limiting engine storage life.Change difficulty, maintenance difficult and maintenance cost is high because composite solidpropellant has, once ftracture, the inefficacy such as distortion just can cause missile mishap.Therefore composite solidpropellant performance change information must be grasped, for the reasonable assessment guided missile storage life-span provides important judging basis.
Main employing two kinds of test methods obtain composite solidpropellant performance variation law both at home and abroad at present: storehouse storage specimen test method and laboratory accelerated test method.Although storehouse storage specimen test method can obtain comparatively true, test findings reliably, testing expenses are high, the cycle is long, are difficult to satisfiedly to develop, test and the requirement of Fast Evaluation.Although it is short that laboratory accelerated test method has the test period, the advantage of favorable reproducibility, but due to accelerated test condition and actual storage environment load variant, such as guided missile is at land storehouse and warship cabin indoor storage, and when war preparedness is on duty out of doors, harsh day and night temperature change can be experienced, fine day, cloudy day, in the daytime the difference variation of rainy day, and the Seasonal Temperature Difference change of spring, summer, autumn and winter, composite solidpropellant is made repeatedly to expand and shrink, there is crackle, embrittlement, sweat is analysed, the phenomenons such as partial crystallization, mechanical property declines rapidly, but laboratory accelerated test condition cannot these temperature difference shock effects of accurate simulation, cause the consistance of accelerated test extrapolating results and actual shelf characteric result of variations poor.
Summary of the invention
The object of the present invention is to provide a kind of composite solidpropellant natural acceleration test device, can simulate and strengthen the alternation effect of environment temperature to composite solidpropellant, accelerate the Heat Ageing of composite solidpropellant, reflect the shelf characteric Changing Pattern of composite solidpropellant truly, rapidly.
Another object of the present invention is to provide the method utilizing said apparatus to carry out composite solidpropellant natural acceleration test.
The object of the present invention is achieved like this, a kind of composite solidpropellant natural acceleration test device, comprise rectangular test case, chamber comprises casing and case lid, casing side is provided with forced draft cooling system, casing outside is provided with Temperature and Humidity Control and data acquisition system (DAS), is provided with specimen mounting in casing.Composite solidpropellant natural acceleration test device of the present invention can be positioned over the open air of tropical marine atmospheres environment, and place with local latitude overturning angle, to reach best endothermic effect, realize simulating and strengthening solar radiation thermal effect and day and night temperature shock effect, keep environment temperature day and night temperature difference circulation, Seasonal Temperature Difference circulation, thus truly, obtain the Changing Pattern of composite solidpropellant mechanical property accurately and rapidly.
Above-mentioned forced draft cooling system comprises and is arranged on window shutter on wall box and return air hole, and be provided with aerofoil fan and motor in the cavity outside this sidewall, bottom half is provided with air inlet.
When in casing, each point temperature homogeneity meets or exceeds design temperature, box house internal air circulation ventilation and heat, i.e. machine operation, drive centrifugation blade to rotate and produce air quantity, by window shutter air-out, by the return air hole return air under window shutter, now air inlet and aerofoil fan are closed; When casing 1 ceiling temperature arrives or exceed the maximum temperature of setting, casing outer circulation is aeration-cooling, i.e. aerofoil fan work, forces to suck outside air from air inlet, and is dispelled the heat by aerofoil fan, realizes cooling in casing.
Temperature and Humidity Control and data acquisition system (DAS) comprise Temperature Humidity Sensor and data gathering and communication controller, and Temperature Humidity Sensor to enter in casing from the air inlet of bottom half and is placed in the middle part of specimen mounting.Temperature Humidity Sensor is for recording temperature, the humidity change of the air in chamber, and data gathering and communication controller regulates temperature in casing by the motor and aerofoil fan duty controlling forced draft cooling system.
In order to reach better heat insulation effect and endothermic effect, heat-insulation layer is arranged on three sidewalls of casing, and interior is coated with black fluororesin paint, box outer surface spraying solar selective heat-absorbing paint.
Second object of the present invention is achieved in that the method utilizing above-mentioned device to carry out composite solidpropellant natural acceleration test, comprises the steps:
1) by the open air of chamber slant setting in tropical marine atmospheres environment, the angle of described inclination is local latitude angle, and by casing ground connection;
2) the composite solidpropellant sample of sealing is put on the specimen mounting of chamber, setting maximum temperature and threshold value;
3) temperature, the humidity of opening Temperature and Humidity Control and data acquisition system (DAS) record chamber inner air change, and control the temperature in casing; Open the change that forced draft cooling system controls temperature in casing;
4) discharging.
Above-mentioned steps 3) in, Temperature Humidity Sensor is for recording temperature, the humidity change of the air in chamber, and data gathering and communication controller regulates temperature in casing by the motor and aerofoil fan duty controlling forced draft cooling system; When in casing, each point temperature homogeneity meets or exceeds the temperature range of setting, box house internal air circulation ventilation and heat, i.e. machine operation, drive centrifugation blade to rotate and produce air quantity, by window shutter air-out, by the return air hole return air under window shutter, now air inlet and aerofoil fan are closed; When casing ceiling temperature arrives or exceed the maximum temperature of setting, casing outer circulation is aeration-cooling, i.e. aerofoil fan work, forces to suck outside air from air inlet, and is dispelled the heat by aerofoil fan, realizes cooling in casing.
The present invention has following beneficial effect:
1, composite solidpropellant natural acceleration test device of the present invention can be simulated and be strengthened solar radiation thermal effect and day and night temperature shock effect, and keep the feature of environment temperature day and night temperature difference circulation, Seasonal Temperature Difference circulation, contribute to truly, obtain accurately and rapidly the Changing Pattern of composite solidpropellant mechanical property.
2, composite propellant accelerated test method of the present invention is simple, and accelerated ratio is high, and simulation is strong, and test findings accurately and reliably.
Accompanying drawing explanation
Fig. 1 is composite solidpropellant natural acceleration test apparatus structure schematic diagram of the present invention;
Fig. 2 is the rear view of Fig. 1;
Fig. 3 is the upward view of Fig. 1.
In figure, 1. casing, 2. case lid, 3. forced draft cooling system, 3-1. window shutter, 4. Temperature and Humidity Control and data acquisition system (DAS), 5. specimen mounting.
Embodiment
Embodiment, a kind of composite solidpropellant natural acceleration test device, comprises rectangular chamber, chamber comprises casing 1 and case lid 2, casing 1 is rectangular parallelepiped, outside dimension: dark 400mm × wide 1780mm × high 1420mm, dead size: dark 400mm × wide 1600mm × high 1300mm.Casing 1 skeleton is SUS304 stainless steel, and casing 1 shell adopts the thick wire drawing corrosion resistant plate of 1.5mm, and casing 1 inwall adopts the thick overlay film corrosion resistant plate of 1.0mm.A sidewall is provided with window shutter 3-1 and return air hole, is provided with aerofoil fan and motor in the cavity outside window shutter 3-1.Between the inwall of sidewall and shell, filling thickness is that the high-quality insulative material glass cotton of 100mm is as heat-insulation layer.Be provided with air inlet bottom casing 1, in casing 1, make grid type, midfeather 100mm, 200mm apart from the stainless steel tank bar in 150mm place, bottom, then 100mm, 200mm arrangement is as specimen mounting 5.Interior sprays black fluororesin paint entirely, and outside surface sprays solar selective heat-absorbing paint entirely.
Temperature and Humidity Control and data acquisition system (DAS) 4 are positioned at outside casing 1, are made up of Temperature Humidity Sensor and data gathering and communication controller.Temperature Humidity Sensor is Honeywell Temperature Humidity Sensor and enters in casing 1 from casing 1 bottom air inlet mouth and be placed between specimen mounting 5, for recording temperature, the humidity change of casing 1 inner air; Data gathering and communication controller stores the humiture data of collection and controls forced draft cooling system duty, ensures that in casing 1, upper temperature limit is no more than setting maximum temperature, the temperature difference is no more than threshold value, keeps temperature homogeneity in casing.
Forced draft cooling system 3 comprises two motors, aerofoil fan and window shutters being equipped with on the right side of casing 1.When each point temperature homogeneity in casing 1 meets or exceeds setting threshold value, force machine operation, casing 1 inner air Inner eycle ventilation and heat; Casing 1 bottom air inlet mouth φ 100, wind top seals, and when casing 1 ceiling temperature arrives or exceed the maximum temperature of setting, forces to suck outside air from air inlet, and is dispelled the heat by aerofoil fan, realize casing cooling.
Utilize said apparatus to carry out the method for composite solidpropellant natural acceleration test, composite solidpropellant is three constituent element composite solidpropellants or four constituent element composite solidpropellants, and test procedure is as follows:
(1) described composite solidpropellant test sample is made dumb-bell shape tensile sample by Type B tensile sample in GJB770B-2005 method 413.1,120mm × 25mm × 10mm specification should be adopted; Each sense cycle parallel sample quantity should be no less than 5, keeps sample in advance and is no less than 10.
(2) every 5 parallel samples are placed in 1 to load in frock, maximum strain when being cooled to 20 DEG C by solid engines solidification as strain applying value, by the engineering elongation between gages of sample.
(3) sample loaded in frock is put into the cast aluminium waterproof sealing box that classification of waterproof is IP66, and in seal box, put into 1 bag of 200g blue silica gel activated.
(4) adjusting ambient temperature 20 DEG C ± 5 DEG C, relative humidity is not more than 60%, tightens cast aluminium waterproof sealing box, and seals with fluid sealant.
(5) chamber is tilted 20 ° to be positioned over the open air of tropical marine atmospheres environment, and by casing 1 ground connection; Multiple cast aluminium waterproof sealing box is put into chamber, opens Temperature and Humidity Control and data acquisition system (DAS), setting device maximum temperature≤70 DEG C, temperature homogeneity≤3 DEG C.
(6) when 0d, 10d, 34d, 76d, 171d, 385d, respectively fetch 1 cast aluminium waterproof sealing box, take out sample, utilize universal testing machine to detect mechanical property.
The test result analysis of natural acceleration test of the present invention and storehouse storage test is adopted to contrast situation for same batch of composite solidpropellant below:
1, acceleration
The test findings of the test findings of the embodiment of the present invention and storehouse being stored sample does ratio proccessing (i.e. retai-nedntensile strength), in table 1 with initial value separately.
Table 1 storehouse storage specimen test situation and embodiment of the present invention test situation contrast
For table 1 data, map to test period with the maximum tensile strength retention rate, result is such as formula shown in (1), formula (2):
P
storehouse=90.798e
-0.0001T(1)
P
the present invention=91.186e
-0.0007t(2)
In formula: P
storehouse---the maximum tensile strength retention rate of the aging T time of storehouse storage sample, %;
P
the present invention---the maximum tensile strength retention rate of the embodiment of the present invention aging t time, %;
The T---storehouse storage specimen test time, d;
T---embodiment of the present invention test period, d.
Because sample the maximum tensile strength retention rate must be not less than 52.77%.Calculate storehouse storage sample respectively according to formula (1), formula (2), sample reaches and is respectively 5427d, 781d critical service time in the embodiment of the present invention.Thus, obtain with tensile strength be judgment basis the embodiment of the present invention correspond to storehouse storage sample accelerated ratio be 7 times.
2, simulation
For storehouse storage sample, the maximum tensile strength retention rate data of embodiment of the present invention sample different tests time, respectively by the unified sequence of its size, ordinal number corresponding to each data is its order, is set to x separately
storehouse i, x
i of the present invention, therefore arrange order respectively according to the performance data size of table 1 two kinds of measurement of test method:
X
storehouse=(1,2,4,3,5,6)
X
the present invention=(1,2,3,4,5,6)
On this basis, order difference d is calculated according to formula (1)
i:
D
i=x
storehouse i-x
i of the present invention(3)
The order difference of acquisition storehouse storage specimen test, the corresponding order of the embodiment of the present invention is:
d＝(0，0，1，-1，0，0)
Rank correlation coefficient rho is calculated according to formula (4)
s:
In formula: d
i---order is poor;
X
1i---the order of test performance data after storehouse storage specimen test;
X
2i---the order of test performance data after embodiment of the present invention test;
N---reference sample group number.
Calculate rank correlation coefficient rho
sresult is 0.943, illustrates to have good correlativity between two kinds of test methods, and natural acceleration test of the present invention can reproduce the failure regularity of solid propellant at actual storehouse storage sample well, and simulation is good.
Claims (7)
1. a composite solidpropellant natural acceleration test device, it is characterized in that: comprise rectangular test case, described chamber comprises casing (1) and case lid (2), described casing (1) side is provided with forced draft cooling system (3), described casing (1) outside is provided with Temperature and Humidity Control and data acquisition system (DAS) (4), is provided with specimen mounting (5) in described casing (1).
2. composite solidpropellant natural acceleration test device as claimed in claim 1, it is characterized in that: described forced draft cooling system (4) comprises and is arranged on window shutter (3-1) on casing (1) sidewall and return air hole, be provided with aerofoil fan and motor in cavity outside this sidewall, casing (1) bottom is provided with air inlet.
3. composite solidpropellant natural acceleration test device as claimed in claim 1 or 2, it is characterized in that: described Temperature and Humidity Control and data acquisition system (DAS) (4) comprise Temperature Humidity Sensor and data gathering and communication controller, described Temperature Humidity Sensor enters in casing (1) from the air inlet of casing (1) bottom.
4. composite solidpropellant natural acceleration test device as claimed in claim 3, is characterized in that: described Temperature Humidity Sensor is multiple and is dispersed between specimen mounting (4).
5. composite solidpropellant natural acceleration test device as claimed in claim 4, it is characterized in that: described heat-insulation layer is arranged on the sidewall of casing (1), described casing 1 inside surface spray black fluororesin paint, casing (1) outside surface spraying solar selective heat-absorbing paint.
6. utilize the device as described in any one of claim 1-5 to carry out the method for composite solidpropellant natural acceleration test, it is characterized in that: comprise the steps:
1) by the open air of chamber slant setting in tropical marine atmospheres environment, the angle of described inclination is local latitude angle, and by casing (1) ground connection;
2) the composite solidpropellant sample of sealing is put on the specimen mounting (4) of chamber, setting maximum temperature and threshold value;
3) open that Temperature and Humidity Control and data acquisition system (DAS) (4) record the temperature of chamber inner air, humidity changes, the temperature in control casing (1); Open the change that forced draft cooling system (3) controls temperature in casing;
4) discharging.
7. method as claimed in claim 6, it is characterized in that: in step 3), be specially, open that Temperature and Humidity Control and data acquisition system (DAS) (4) record the temperature of the air in chamber, humidity changes and passes through motor and aerofoil fan regulating and controlling casing (1) interior temperature; When in casing (1), each point temperature homogeneity meets or exceeds the temperature range of setting, casing (1) inner air Inner eycle ventilation and heat, i.e. machine operation, drive centrifugation blade to rotate and produce air quantity, by window shutter air-out, by the return air hole return air under window shutter, now air inlet and aerofoil fan are closed; When casing (1) ceiling temperature arrives or exceed the maximum temperature of setting, casing (1) outer circulation is aeration-cooling, i.e. aerofoil fan work, forces to suck outside air from air inlet, and is dispelled the heat by aerofoil fan, realizes cooling in casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716538.7A CN105403474B (en) | 2015-10-29 | 2015-10-29 | A kind of composite solidpropellant natural acceleration test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716538.7A CN105403474B (en) | 2015-10-29 | 2015-10-29 | A kind of composite solidpropellant natural acceleration test device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105403474A true CN105403474A (en) | 2016-03-16 |
| CN105403474B CN105403474B (en) | 2018-05-11 |
Family
ID=55469099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510716538.7A Active CN105403474B (en) | 2015-10-29 | 2015-10-29 | A kind of composite solidpropellant natural acceleration test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105403474B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841530A (en) * | 2017-03-17 | 2017-06-13 | 中国人民解放军海军航空工程学院 | Solid engines state monitoring apparatus based on chemical atmosphere sensor |
| CN109580465A (en) * | 2018-12-12 | 2019-04-05 | 中国兵器工业第五九研究所 | A kind of natural environment acceleration test apparatus and its application method for strengthening photo-thermal effect |
| CN109738225A (en) * | 2018-11-27 | 2019-05-10 | 福建福清核电有限公司 | A kind of npp safety shell concrete keeps sample method |
| CN110155365A (en) * | 2019-05-13 | 2019-08-23 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | For the fixed device of unmanned plane natural surroundings exposure test |
| CN111156103A (en) * | 2019-07-01 | 2020-05-15 | 中国人民解放军96901部队24分队 | Method and device for accelerating rolling storage process of solid rocket engine |
| CN111521491A (en) * | 2020-04-22 | 2020-08-11 | 中国人民解放军国防科技大学 | Temperature-strain high-flux aging test device |
| CN112595656A (en) * | 2020-12-09 | 2021-04-02 | 中国兵器工业第五九研究所 | Testing device and evaluation method for adaptability of explosive device long-storage environment for bomb |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1479088A (en) * | 2002-08-29 | 2004-03-03 | 重庆工学院 | Suntracing reflection condensing condensing solarization experimental machine and used solar light tracing method |
| CN101487789A (en) * | 2009-02-11 | 2009-07-22 | 中国兵器工业第五九研究所 | Test method and apparatus for natural environment of electronic product |
| CN101672765A (en) * | 2009-08-18 | 2010-03-17 | 中国兵器工业第五九研究所 | Testing box for accelerated environment |
| CN101718676A (en) * | 2009-11-24 | 2010-06-02 | 中国兵器工业第五九研究所 | Atmospheric environment comprehensive natural acceleration test system |
| CN102841051A (en) * | 2012-09-07 | 2012-12-26 | 中国兵器工业第五九研究所 | Multi-factor comprehensive simulation accelerated testing device for climatic environment |
| CN204583214U (en) * | 2015-04-15 | 2015-08-26 | 东莞市万洋环境科技有限公司 | A kind of elevated temperature thermal cycles burn-in chamber |
-
2015
- 2015-10-29 CN CN201510716538.7A patent/CN105403474B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1479088A (en) * | 2002-08-29 | 2004-03-03 | 重庆工学院 | Suntracing reflection condensing condensing solarization experimental machine and used solar light tracing method |
| CN101487789A (en) * | 2009-02-11 | 2009-07-22 | 中国兵器工业第五九研究所 | Test method and apparatus for natural environment of electronic product |
| CN101672765A (en) * | 2009-08-18 | 2010-03-17 | 中国兵器工业第五九研究所 | Testing box for accelerated environment |
| CN101718676A (en) * | 2009-11-24 | 2010-06-02 | 中国兵器工业第五九研究所 | Atmospheric environment comprehensive natural acceleration test system |
| CN102841051A (en) * | 2012-09-07 | 2012-12-26 | 中国兵器工业第五九研究所 | Multi-factor comprehensive simulation accelerated testing device for climatic environment |
| CN204583214U (en) * | 2015-04-15 | 2015-08-26 | 东莞市万洋环境科技有限公司 | A kind of elevated temperature thermal cycles burn-in chamber |
Non-Patent Citations (2)
| Title |
|---|
| 易平: "3种高分子材料自然环境多角度暴露对比试验", 《表面技术》 * |
| 莫仁陶: "材料天然环境曝晒试验曝晒架角度的选定", 《环境条件与试验》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841530A (en) * | 2017-03-17 | 2017-06-13 | 中国人民解放军海军航空工程学院 | Solid engines state monitoring apparatus based on chemical atmosphere sensor |
| CN109738225A (en) * | 2018-11-27 | 2019-05-10 | 福建福清核电有限公司 | A kind of npp safety shell concrete keeps sample method |
| CN109580465A (en) * | 2018-12-12 | 2019-04-05 | 中国兵器工业第五九研究所 | A kind of natural environment acceleration test apparatus and its application method for strengthening photo-thermal effect |
| CN110155365A (en) * | 2019-05-13 | 2019-08-23 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | For the fixed device of unmanned plane natural surroundings exposure test |
| CN111156103A (en) * | 2019-07-01 | 2020-05-15 | 中国人民解放军96901部队24分队 | Method and device for accelerating rolling storage process of solid rocket engine |
| CN111156103B (en) * | 2019-07-01 | 2023-11-14 | 中国人民解放军96901部队24分队 | Acceleration method and device for solid rocket engine rolling storage process |
| CN111521491A (en) * | 2020-04-22 | 2020-08-11 | 中国人民解放军国防科技大学 | Temperature-strain high-flux aging test device |
| CN112595656A (en) * | 2020-12-09 | 2021-04-02 | 中国兵器工业第五九研究所 | Testing device and evaluation method for adaptability of explosive device long-storage environment for bomb |
| CN112595656B (en) * | 2020-12-09 | 2022-05-27 | 中国兵器工业第五九研究所 | Testing device and evaluation method for adaptability of explosive device long-storage environment for bomb |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105403474B (en) | 2018-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105403474A (en) | Natural acceleration testing device and method of composite solid propellant | |
| CN103175863B (en) | Building door, window and curtain wall heat insulation performance detection apparatus and system thereof | |
| CN105300689B (en) | The test method and its device of wind turbine gearbox | |
| CN104931151B (en) | A kind of non-contact measurement apparatus measured for heavy caliber horizontal solar telescope primary mirror mirror temperature | |
| CN208367182U (en) | A kind of test macro of electrokinetic cell system | |
| CN105651681B (en) | Thin-film solar cells natural ageing test method and apparatus | |
| CN105355994A (en) | Safety valve ageing detection method and detection tool used for lead acid storage battery | |
| Antonaia et al. | Accelerated aging tests on ENEA-ASE solar coating for receiver tube suitable to operate up to 550 C | |
| CN106323856A (en) | Method for evaluating weather resistance of automotive interior decorations by glass lower-temperature-limit test chambers | |
| CN104132958B (en) | Phase change member heat storage-release performance study experiment table and application thereof | |
| CN203083960U (en) | Thermal insulation property detection device and system for curtain walls of doors and windows of building | |
| Mohamed et al. | Correlation for estimating solar cell temperature based on a tropical field operation of a photovoltaic system | |
| CN205607825U (en) | Thin -film solar cell nature ageing tests device | |
| CN101487789B (en) | Test method and apparatus for natural environment of electronic product | |
| CN212228344U (en) | Battery ice water impact test device | |
| CN112903571A (en) | Test method for simulating weather resistance of wallboard | |
| CN206114490U (en) | Novel accurate japanning ageing testing device | |
| CN105426606A (en) | Average temperature calculation method of level flight process of stratosphere airship with solar cell | |
| CN207123463U (en) | Three casees heat-storage type cold-hot impact testers | |
| CN207380080U (en) | A kind of visual device for testing half-cell constant temperature | |
| CN105303053A (en) | Level flight process average temperature calculating method of high altitude balloon with solar cell | |
| CN206975507U (en) | A kind of spacecraft testing tester equipped system | |
| CN206330722U (en) | A kind of exterior-wall heat insulation Anti-shock test device | |
| CN104677935A (en) | Coating heat insulation effect testing device with controllable temperature, humidity and gas component atmosphere | |
| Bertram | Testing and standards for thermal solar collectors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |