CN108469450A - Multifunctional steam condensing heat-exchange and Frost formation process visual experimental apparatus - Google Patents
Multifunctional steam condensing heat-exchange and Frost formation process visual experimental apparatus Download PDFInfo
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- CN108469450A CN108469450A CN201810229255.3A CN201810229255A CN108469450A CN 108469450 A CN108469450 A CN 108469450A CN 201810229255 A CN201810229255 A CN 201810229255A CN 108469450 A CN108469450 A CN 108469450A
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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
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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
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
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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
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/04—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of melting point; of freezing point; of softening point
- G01N25/06—Analysis by measuring change of freezing point
Abstract
The invention belongs to condensation heat transfer technical fields, multifunctional steam condensing heat-exchange and Frost formation process visual experimental apparatus, including vacuum-environment system, visualization system, steam generating system, gas supply system, cooling system, acquisition and control system, laboratory sample and fixture.A kind of device that can complete a variety of steam condensations and frosting experiment of the present invention, influence of the multicomponent fixed gas content to condensation heat transfer can be studied by the present apparatus, the influence of material or surface texture to the condensation heat transfer with or without fixed gas becomes vapour pressure condensation heat transfer and frost etc..Meanwhile the shape of laboratory sample is not required, observation visual angle is big, can be carried out at the same time side and clap and take a crane shot.
Description
Technical field
The invention belongs to condensation heat transfer technical fields, and steam condensation and Frost formation process can be observed and measure sample by being related to one kind
The experimental provision of this surface condensation heat transfer coefficient.
Background technology
It is a kind of energy transport mode of generally existing to condense phase-change heat transfer, in aerospace, power generation, heat management, seawater
Desalination, environmental Kuznets Curves etc. are produced to have a wide range of applications with life.Material, micro- macrostructure, fixed gas content and table
Face steam renewal speed etc. has an impact condensation heat transfer efficiency, thus studies the action rule of each influence factor, and each
The mutually coordinated focus as people's growing interest between factor.Meanwhile it going to realize to condensing phase-change heat transfer by these factors
The regulation and control of process use phase-change heat transfer, material surface anti-dewing, frosting resistance and material surface steady under the conditions of clammy
Qualitative and durability equally has a very important significance.For example, by the inhibition to condensing phase transition process, air-conditioning can be kept
Fin surface dry, inhibit mould grow, can also inhibit low temperature environment get off the plane the surfaces such as wing, high voltage cable ice-nucleus it is long
Greatly.
The influencing mechanism containing above-mentioned each factor is studied, needs to acquire mass efficient experimental data, but existing experimental facilities
Mostly meet a certain particular experiment specially to build, versatility and commerciality are poor.For example, in published condensation test device,
" the steam condensation containing multicomponent incoagulable gas is changed disclosed in the patent document that number of patent application is 201210540382.8
Hot experimental provision " is only used for influence of the research on-condensible gas content to tubulose sample condensation heat transfer performance；Number of patent application is
" the condensing heat-exchange experiment dress that Natural Circulation is coupled with forced circulation can be achieved disclosed in 201310084890.4 patent document
Set " can only be based on observation of the recurrence method realization to tubular surface heat transfer property in pipe, and low pressure and the pure steaming of high pressure can not be provided
The condensed environment of vapour.Meanwhile existing experimental provision has shortcomings in that：1) since condensation building volume is generally smaller, system is stablized
Property is poor, is fluctuated in the control of the experiment parameters such as air pressure, temperature larger；2) utilize the temperature that cooling water keeps condensing surface permanent
It is fixed, since the specific heat capacity of water is larger, cause the time used in change condensing surface temperature longer；3) condensing surface temperature cannot be below
0 DEG C, frost cannot be studied；4) sample surface participates in the sealing of condensation chamber, requires, cannot take into account to sample surface shape
Tubulose and the requirement of the condensation test of planar sample；5) observation visual angle is smaller, can not three-dimensional comprehensive observation phenomenon.
Invention content
The purpose of the present invention is the problems such as solving poor universality existing for above-mentioned existing experimental provision, and the present invention provides one
Kind can complete the device of a variety of steam condensations and frosting experiment, and multicomponent fixed gas content can be studied to cold by the present apparatus
The influence of solidifying heat transfer, material or surface texture are passed to containing the influence of the condensation heat transfer of (or being free of) fixed gas, low-pressure steam condensation
Frost etc. under heat and the same terms.Meanwhile the shape of laboratory sample is not required, observation visual angle is big, can be simultaneously
It carries out side bat and takes a crane shot.
Technical scheme of the present invention：
A kind of multifunctional steam condensing heat-exchange and Frost formation process visual experimental apparatus, including it is vacuum-environment system, visual
Change system, steam generating system, gas supply system, cooling system, acquisition and control system, laboratory sample 26 and folder
Tool；
The vacuum-environment system provides ultra-high vacuum state, the sealed chamber of constant temperature 24,24 top of sealed chamber and
The left and right sides offers optical window, and laboratory sample 26 is placed with inside sealed chamber 24, and laboratory sample 26 is clamped by fixture；
Sealed chamber 24 is connect by pipeline with steam generating system, gas supply system, according to requirement of experiment into sealed chamber 24
Portion provides quantitative steam and incoagulable gas；The vacuum-environment system include air bleeding valve 4, vacuum valve 5, vacuum pump group 6,
Electronic barometer 7, heating tape power governor 19, thermocouple 20, heating tape 21, sealed chamber 24, steam are passed through flange 32, cold
But penetration by water part 33, power supply penetrating member 35 and thermocouple penetrating member 36；After the hatch door of the sealed chamber 24 is closed, using true
Empty pump group 6 is controlled by vacuum valve 5 and extracts air in sealed chamber 24 out, and ultra-high vacuum state is reached；The sealed chamber
24 are equipped with air bleeding valve 4；Heating tape 21 is wrapped in 24 outer wall surrounding of sealed chamber, and passes through computer 22 and heating tape power tune
The calorific value that device 19 adjusts heating tape 21 is saved, to keep 24 internal temperature of sealed chamber to stablize in required condensed environment temperature；
Electronic barometer 7 and thermocouple 20 are arranged in 24 inner wall of sealed chamber, and thermocouple 20 is located at laboratory sample 26 and cooling water disengaging
Mouth end, realizes the acquisition to experimental data in sealed chamber 24 and real-time monitoring；Steam is passed through flange 32, cooling water penetrating member
33, power supply penetrating member 35 and thermocouple penetrating member 36 are installed on the side wall of sealed chamber 24, steam be passed through flange 32 realize with
The connection of steam-flow meter 9；
The visualization system includes that 24 top of sealed chamber and the left and right sides offer optical window, go deep into formula observation
Lens barrel and high-speed camera 3；Optical window is respectively take a crane shot form 30, upper right form 31, bottom right form 34,37 and of upper left form
Lower-left form 38；High-speed camera 3 is right against the optical window at left side and top, and cooperation gos deep into formula observation lens barrel while realizing side
The 26 surface condensation form of laboratory sample clapped and taken a crane shot in sealed chamber 24；The to be condensed or frosting table of the laboratory sample 26
Face is fixed on by fixture near optical window, and observation experiment phenomenon is convenient for；
The steam generating system includes steam valve 8, steam-flow meter 9, solenoid valve 10, liquid-gas separator 11, fluid injection
Valve 12, reflux pipe valve 13, boiler temperature thermocouple 14, boiler power adjuster 15 and boiler 16, boiler temperature thermocouple 14 weld
Be connected on inside boiler 16, detect boiler 16 in water temperature, boiler 16 by boiler power adjuster 15 by deionized water heat and it is steady
It is scheduled on condensed environment temperature, the steam of generation is transported to sealed chamber 24 by jet chimney, is set on jet chimney by boiler 16
It is equipped with steam valve 8, steam-flow meter 9 and solenoid valve 10, to control the output quantity of steam；Jet chimney and liquid-gas separator 11
It is connected, liquid-gas separator 11 constitutes circuit by the control of pipe valve 13 that flows back with boiler 16；Boiler 16 is equipped with liquid-filling valve 12；
The cooling system is responsible for keeping constant the cold junction temperature of laboratory sample 26, and keeps the temperature of condensing surface low
Vapo(u)rous temperature in 24 environment of sealed chamber promotes steam in surface condensation, then when surface temperature is down to 0 DEG C or less
Carry out frosting experiment；The cooling system includes that cooling water pump 17, bosh 18, Peltier cold bench 28 and cooling water are snakelike
Pipe 29, Peltier cold bench 28 are responsible for laboratory sample 26 being cooled to assigned temperature, the hot junction of Peltier cold bench 28 and cooling water snake
Shape pipe 29 contacts, and cooling water pump 17 is by cooling water from bosh 18 along cooling water circulation pipeline to cooling water serpentuator
29, it is cooled down for 28 hot junction of Peltier cold bench；The Peltier cold bench 28 is carried out by Peltier cold bench power controller 23
Control；
The acquisition and control system is responsible for human-computer interaction, and the parameter for controlling entire experimental provision is in setting
Value, including sample thermocouple 25, air pressure instrument, data collecting card and computer 22；Sample thermocouple 25 is arranged in laboratory sample
Near 26, for acquiring condensation heat transfer experimental data, heat transfer coefficient is calculated；
The gas supply system includes gas cylinder 1,2 and gas flow meter 27 of pressure reducing valve, what gas cylinder 1 provided
Gas enters sealed chamber 24 after the decompression of pressure reducing valve 2 in pipeline using gas flowmeter 27.
The beneficial effects of the present invention are, a kind of device that can complete a variety of steam condensations and frosting experiment is provided,
Influence of the multicomponent fixed gas content to condensation heat transfer can be studied by the present apparatus, material or surface texture are to containing (or being free of)
The influence of the condensation heat transfer of fixed gas becomes vapour pressure condensation heat transfer and frost etc..Meanwhile not having to the shape of laboratory sample
It requires, observation visual angle is big, can be carried out at the same time side and clap and take a crane shot.
Description of the drawings
Fig. 1 is experimental provision schematic diagram of the present invention.
Fig. 2 sealed chambers are gone forward right side hole bitmap.
Rear left face bitmap under Fig. 3 sealed chambers.
In figure：1 gas cylinder；2 pressure reducing valves；3 high-speed cameras；4 air bleeding valves；5 vacuum valves；
6 vacuum pump groups；7 electronic barometers；8 steam valves；9 steam-flow meters；10 solenoid valves；
11 liquid-gas separators；12 liquid-filling valves；13 reflux pipe valves；14 boiler temperature thermocouples；
15 boiler power adjusters；16 boilers；17 cooling water pumps；18 boshes；
19 heating tape power governors；20 thermocouples；21 heating tapes；22 computers；
23 Peltier cold bench power controllers；24 sealed chambers；25 sample thermocouples；26 laboratory samples；
27 gas flowmeters；28 Peltier cold bench；29 cooling water serpentuators；30 take a crane shot form；
31 upper right forms；32 steam are passed through flange；33 cooling water penetrating members；34 bottom right forms；
35 power supply penetrating members；36 thermocouple penetrating members；37 upper left forms；38 lower-left forms.
Specific implementation mode
Below in conjunction with the accompanying drawings and technical solution, the specific implementation mode further illustrated the present invention.
As seen from Figure 1, the present invention meets reality using the method that entire laboratory sample is placed in sealed chamber 24
Required environmental condition is tested, therefore, experimental provision of the present invention does not require the shape and placing direction of laboratory sample 26, can be same
When meet transverse tube and vertical tube and sheet laboratory sample.24 available environmental conditions parameter of sealed chamber include temperature, air pressure,
Gas component, sample temperature.Vapor (steam) temperature uses closed-loop control, 16 power governor of boiler that can be surveyed according to boiler in boiler 16
16 heating power of lower water temperature boiler in the stove measured by galvanic couple 14 is warmed, ensures the constant of outlet steam temperature.Meanwhile it sealing
Exterior thereto insulating layer can prevent steam inside heat loss, be wrapped in heating tape 18 and the seal chamber of 24 outer wall of sealed chamber
Locular wall face thermocouple 20 forms closed-loop control, and outside wall temperature can be maintained to be consistently equal to steam inside temperature, interior to ensure that
Portion's environment temperature it is constant.In circuit design between boiler 16 and sealed chamber 24, all pipelines have heat-preservation cotton package, steam
Air-flow gauge 9 is short as possible with the pipeline of sealed chamber 24 with solenoid valve 10, is condensed with reducing steam in pipe.Steam passes through solenoid valve
Before 10, liquid-gas separator 11 is first passed through by issuable condensation water collection in pipeline, reflux pipe valve is opened in experiment later
13 will be in condensate return to boiler 16.
Electronic barometer 7 forms closed-loop control with steam inlet solenoid valve 10, maintains air pressure inside constant.
Gas component can adjust the needle-valve being installed on gas cylinder 1 according to flowmeter 27 and electronic barometer 7, realize each
The quantitative control of component fixed gas.
When laboratory sample 26 is sheet, bottom is fitted closely by heat-conducting silicone grease and 2821 cold end of Peltier cold bench, therefore
Sheet sample temperature can adjust 28 power of Peltier cold bench by computer and power governor and realize；When laboratory sample 26 is
When tubular specimen, the temperature of tubular specimen is directly determined by cooling water temperature, it is therefore desirable to additionally be set using constant temperature refrigeration water-bath
Standby control cooling water temperature.
As shown in Fig. 2, sealed chamber 24 is welded into enclosure space using steel plate, front end is connected through the hinge with form
Sealing ring is arranged in hermatic door, cavity front.
(1) water filling for the first time of boiler 16 and subsequently plus water, technical solution is：For the first time plus when water, it closes and lock sealing door,
It opens steam valve 8 and extraction valve 5 closes 24 all valves of sealed chamber, start vacuum pump group 6 and start to vacuumize, wait for electronics air pressure
When 7 display air pressure of meter is less than 1Pa, extraction valve 5 is closed, steam off valve 8, boiler 16 and sealed chamber 24 are interior all in true at this time
Dummy status.By 12 other end of liquid-filling valve connect deionized water water pipe, open liquid-filling valve 12, due to 16 inside and outside differential pressure of boiler, go from
Sub- water is automatically drawn into boiler 16.If should during be free aspiration fashionable, can in heating boiler 16 deionized water to boiling,
Liquid-filling valve 12 is opened air in boiler 16 is discharged using steam.When subsequently adding water, liquid-filling valve 12 is connected into deionized water water pipe,
The other end of water pipe is immersed in deionized water, deionized water opens liquid-filling valve to boiling in heating boiler 16, will using steam
Air emptying in deionization water pipe, subsequent boiler 16 stop heating, after the cooling of boiler 16, due to 16 inside and outside differential pressure of boiler,
Deionized water can be automatically drawn into boiler 16, after reaching predetermined water level, closed liquid-filling valve 12, removed deionized water water pipe, complete
16 water filling of boiler works.
(2) it is used for influence experiment of the multicomponent fixed gas content to condensation heat transfer, technical solution to be：Experiment sample is pacified
In sealed chamber 24, hermatic door is closed.After 16 water filling of boiler, the external all valves of seal cavity in addition to extraction valve 5 are closed
Door sets temperature value in boiler 16 and vacuum chamber 24, begins to warm up boiler 16 and vacuum chamber 24, opens vacuum pump group 6 and takes out
Vacuum closes extraction valve 5 and vacuum pump group 6 successively when electronic barometer 7 shows that pressure is less than 1Pa, and completion vacuumizes work
Make, open cooling water pump 17, sets 28 temperature of Peltier cold bench,.After system temperature stabilization, it is corresponding to open required fixed gas
Gas cylinder 1 observes 7 atmospheric pressure value of electronic barometer, adjusts 1 noticeable degree flow of gas cylinder, is closed after reaching target flow
Gas cylinder 1.It after system temperature stabilization, opens steam valve 8 and is passed through steam, condensation starts, and after cavity pressure stabilization, passes through
Form is clapped and form observation experiment phenomenon of taking a crane shot in side, and Heat Transfer Data is acquired using intracavitary sample thermocouple 25.
(3) it is used for the influence experiment of material or surface texture to the condensation heat transfer without fixed gas, technical solution to be：It will
Certain material or the laboratory sample 26 for being machined with specific surface structure are mounted in sealed chamber 24, close hermatic door.Boiler 16
After water filling, the external all valves of sealed chamber 24 in addition to extraction valve 5 are closed, set temperature in boiler 16 and sealed chamber 24
Value opens seal chamber heating tape 21 and 16 power supply of boiler, begins to warm up boiler 16 and sealed chamber 24, opens vacuum pump group 6 and takes out
Vacuum closes extraction valve 5 and vacuum pump group 6 successively when electronic barometer 7 shows that pressure is less than 1Pa, and completion vacuumizes work
Make, opens cooling water pump 17,28 temperature of setting Peltier cold bench.After system temperature stabilization, opens steam valve 8 and is passed through steam,
Condensation starts, and after cavity pressure is stabilized to atmospheric pressure, claps form by side and form observation experiment phenomenon of taking a crane shot, utilizes intracavitary
Thermocouple acquires Heat Transfer Data.
(4) being used to become vapour pressure condensation heat transfer and frost experiment, technical solution is：By certain material or processing
There is the laboratory sample 26 of specific surface structure to be mounted in sealed chamber 24, closes hermatic door.After 16 water filling of boiler, close except pumping
The external all valves of sealed chamber 24 other than air valve 5 set temperature value in boiler 16 and sealed chamber 24, open seal chamber heating
16 power supply of band 21 and boiler begins to warm up boiler 16 and sealed chamber 24, opens vacuum pump group 6 and vacuumizes, waits for electronic barometer 7
When showing that pressure is less than 1Pa, extraction valve 5 and vacuum pump group 6 are closed successively, completion vacuumizes work, opens cooling water pump 17, if
Determine 28 temperature of Peltier cold bench.After system temperature stabilization, steam pressure in sealed chamber 24 is set, steam valve 8 is opened and is passed through
Steam, condensation start, and the actual pressure duty control solenoid valve 10 that 22 program of computer can be detected according to electronic barometer 7 is held
It closes, to keep stable gas pressure in sealed chamber 24, after 7 registration of electronic barometer is stabilized to setting value in chamber 24 to be sealed,
According to specific needs by upper left form 37 or lower-left form 38 and 30 observation experiment phenomenon of form of taking a crane shot, sample thermocouple is utilized
25 acquisition Heat Transfer Datas；It is sequentially increased steam pressure in set sealed chamber 24, realizes and becomes vapour pressure condensation or frosting reality
It tests.
Claims (1)
1. a kind of multifunctional steam condensing heat-exchange and Frost formation process visual experimental apparatus, which is characterized in that described is multi-functional
Vapor condensation heat-exchange and Frost formation process visual experimental apparatus include vacuum-environment system, visualization system, steam generating system,
Gas supply system, cooling system, acquisition and control system, laboratory sample (26) and fixture；
The vacuum-environment system provides ultra-high vacuum state, the sealed chamber of constant temperature (24), at the top of sealed chamber (24) and
The left and right sides offers optical window, is placed with laboratory sample (26) inside sealed chamber (24), laboratory sample (26) passes through folder
Tool clamping；Sealed chamber (24) is connect by pipeline with steam generating system, gas supply system, according to requirement of experiment to sealing
Quantitative steam and incoagulable gas are provided inside chamber (24)；The vacuum-environment system includes air bleeding valve (4), vacuum valve
(5), vacuum pump group (6), electronic barometer (7), heating tape power governor (19), thermocouple (20), heating tape (21), sealing
Chamber (24), steam are passed through flange (32), cooling water penetrating member (33), power supply penetrating member (35) and thermocouple penetrating member (36)；
After the hatch door of the sealed chamber (24) is closed, controlled sealed chamber (24) by vacuum valve (5) using vacuum pump group (6)
Interior air extraction, reaches ultra-high vacuum state；The sealed chamber (24) is equipped with air bleeding valve (4)；Heating tape (21) is wound
It is adjusted heating tape (21) in sealed chamber (24) outer wall surrounding, and by computer (22) and heating tape power governor (19)
Calorific value, to keep sealed chamber (24) internal temperature to stablize in required condensed environment temperature；Electronic barometer (7) and thermoelectricity
Even (20) are arranged in sealed chamber (24) inner wall, and thermocouple (20) is located at laboratory sample (26) and cooling water outlet and inlet end, realize
Acquisition to sealed chamber (24) interior experimental data and real-time monitoring；Steam is passed through flange (32), cooling water penetrating member (33), electricity
Source penetrating member (35) and thermocouple penetrating member (36) are installed on the side wall of sealed chamber (24), and steam is passed through flange (32) realization
With the connection of steam-flow meter (9)；
The visualization system includes that at the top of sealed chamber (24) and the left and right sides offers optical window, gos deep into formula peephole
Cylinder and high-speed camera (3)；Optical window is respectively that take a crane shot form (30), upper right form (31), bottom right form (34), upper left regards
Window (37) and lower-left form (38)；High-speed camera (3) is right against the optical window at left side and top, and formula peephole is goed deep into cooperation
Cylinder realizes laboratory sample (26) surface condensation form in side bat and sealed chamber of taking a crane shot (24) simultaneously；The laboratory sample
(26) to be condensed or frosting surface is fixed on by fixture near optical window, and observation experiment phenomenon is convenient for；
The steam generating system include steam valve (8), steam-flow meter (9), solenoid valve (10), liquid-gas separator (11),
Liquid-filling valve (12), reflux pipe valve (13), boiler temperature thermocouple (14), boiler power adjuster (15) and boiler (16), boiler
Temperature thermocouple (14) is welded on boiler (16) inside, detects boiler (16) interior water temperature, and boiler (16) is adjusted by boiler power
Deionized water is heated and is stablized in condensed environment temperature by device (15), and boiler (16) is conveyed the steam of generation by jet chimney
To sealed chamber (24), it is provided with steam valve (8), steam-flow meter (9) and solenoid valve (10) on jet chimney, is steamed to control
The output quantity of vapour；Jet chimney is connected with liquid-gas separator (11), liquid-gas separator (11) by flow back pipe valve (13) control with
Boiler (16) constitutes circuit；Boiler (16) is equipped with liquid-filling valve (12)；
The cooling system is responsible for keeping constant the cold junction temperature of laboratory sample (26), and the temperature of condensing surface is made to be less than
Vapo(u)rous temperature in sealed chamber (24) environment, promotes steam in surface condensation, then when surface temperature is down to 0 DEG C or less
Carry out frosting experiment；The cooling system includes cooling water pump (17), bosh (18), Peltier cold bench (28) and cooling
Water coiled pipe (29), Peltier cold bench (28) are responsible for laboratory sample (26) being cooled to assigned temperature, Peltier cold bench (28)
Hot junction is contacted with cooling water serpentuator (29), and cooling water pump (17) is by cooling water from bosh (18) along cooling water circulation pipeline
It is transported to cooling water serpentuator (29), is cooled down for Peltier cold bench (28) hot junction；The Peltier cold bench (28) passes through pa
You are controlled patch cold bench power controller (23)；
The acquisition and control system is responsible for human-computer interaction, and the parameter for controlling entire experimental provision is in setting value, packet
Include sample thermocouple (25), air pressure instrument, data collecting card and computer (22)；Sample thermocouple (25) is arranged in laboratory sample
(26) near, for acquiring condensation heat transfer experimental data, heat transfer coefficient is calculated；
The gas supply system includes gas cylinder (1), pressure reducing valve (2) and gas flow meter (27), and gas cylinder (1) carries
The gas of confession enters sealed chamber (24) after pressure reducing valve (2) decompression in pipeline using gas flowmeter (27).
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| CN201810229255.3A CN108469450B (en) | 2018-03-16 | 2018-03-16 | Multifunctional steam condensation heat exchange and frosting process visualization experiment device |
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| CN201810229255.3A CN108469450B (en) | 2018-03-16 | 2018-03-16 | Multifunctional steam condensation heat exchange and frosting process visualization experiment device |
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| CN109470733A (en) * | 2018-10-18 | 2019-03-15 | 浙江大学 | In a kind of achievable steam pipe with the visual experimental provision of out-tubular condensing |
| CN109709138A (en) * | 2018-12-29 | 2019-05-03 | 北京卫星环境工程研究所 | The test macro and test method of vacuum and low temperature Frost deposit |
| CN111337536A (en) * | 2020-04-13 | 2020-06-26 | 西安交通大学 | Liquid drop stream radiation heat exchange experimental device and method |
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| CN112666203A (en) * | 2020-12-25 | 2021-04-16 | 浙江大学 | Visual experimental apparatus of trace water frosting |
| CN112964747A (en) * | 2021-03-10 | 2021-06-15 | 北京科技大学 | Gas condensation visualization and heat exchange characteristic detection device and method |
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