CN101476973B - Flue gas plume movement simulated experiment apparatus in thermal stratification surroundings - Google Patents
Flue gas plume movement simulated experiment apparatus in thermal stratification surroundings Download PDFInfo
- Publication number
- CN101476973B CN101476973B CN2008102462033A CN200810246203A CN101476973B CN 101476973 B CN101476973 B CN 101476973B CN 2008102462033 A CN2008102462033 A CN 2008102462033A CN 200810246203 A CN200810246203 A CN 200810246203A CN 101476973 B CN101476973 B CN 101476973B
- Authority
- CN
- China
- Prior art keywords
- section
- flue gas
- smoke
- closed chamber
- steady flow
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to an experiment device for simulating the motion of smoke plume under environment of thermal stratification. The device solves the problems that the development of the experimental research on a rising transmission rule of the smoke plume of early fire under environment of thermal stratification lacks an experiment device. The experiment device comprises a closed cavity, a smoke formation mechanism, a data acquisition and processing mechanism and a smoke exhaust mechanism; the closed cavity is a cube; the lower part of a ceiling of the inside of the closed cavity is provided with a square cover of which inner wall is a mirror face; the inside of the square cover is distributed with a plurality of quartz heating tubes; the middle part of the bottom of the square cover is vertically provided with a smoke gas outlet mechanism; the smoke gas outlet mechanism comprises an inlet section, an expansion section, a heating section, a steady flow section, a contraction section and an outlet section; the expansion section is trumpet-shaped; the inside of the heating section is axially provided with a heating resistance wire; the inside of the steady flow section is axially distributed with steady flow tubes; and the contraction section is of an inverse trumpet shape. The experiment device has good controllability, and experiment expandability, can directly place small-power experimental fire in the closed cavity, can also control smoke generation outside the closed cavity by a smoke box and has experiment repeatability.
Description
Technical field
The present invention relates to be applied to study the device that transports rule of incipient fire flue gas under large space Heating,Ventilating and Air Conditioning (HVAC), the sunshine radiation environment, the mounting arrangements method scientific and reasonable for the large space smoke fire detector provides technical support.
Background technology
The large space building is owing to reasons such as Heating,Ventilating and Air Conditioning (HVAC) or radiation at sunshine, easily form the low thermally stratified layer environment of relative superiority or inferiority on the Inside Air Temperature, the incipient fire flue-gas temperature is identical with surrounding air in certain eminence, and flue gas buoyancy is zero also to transfer negative value to gradually and finally stop at a certain height.Flue gas transports rule under the research thermally stratified layer environment, and parameters such as the maximum height of determining incipient fire flue gas plume under the thermally stratified layer environment and width provide theoretical and experiment support thereby be embodied as the scientific and reasonable mounting arrangements method of large space fire detector.Large space fire flue gas research both at home and abroad at present concentrates on mostly and analyzes high-power fire smoke filling rule; promptly study the extensive fire smoke of large space and transport rule; research means adopts regional simulation and experimental analysis mostly; miniwatt fire smoke based on early fire detection transports rule, and especially the experimental study of rising propagation law is not carried out under the thermally stratified layer environment.
Summary of the invention
In order to carry out the experimental study of the rising propagation law of incipient fire flue gas plume under the thermally stratified layer environment, the invention provides a kind of flue gas plume movement simulated experiment apparatus in thermal stratification surroundings.
The technical solution that realizes above-mentioned purpose is as follows:
A kind of flue gas plume movement simulated experiment apparatus in thermal stratification surroundings comprises closed chamber, smoke generation mechanism, data acquisition and processing mechanism and smoke evacuation mechanism; Described closed chamber inner top below is laid with the thermally stratified layer heating arrangements, and the short transverse of a sidewall is provided with scale, and also connecting by data line is provided with plural temperature sensor, and closed chamber is connecting outside data acquisition and processing mechanism by lead; The closed chamber top is being communicated with smoke evacuation mechanism, and its bottom is being communicated with exhanst gas outlet mechanism, and the one sidewall is provided with view window;
Described closed chamber is a cube, and its level cross-sectionn is a square or rectangular, and its length is respectively 1-1.2 rice, 1-1.2 rice, 1.8-2 rice; Described thermally stratified layer heating arrangements comprises Yi Fanggai, and lid length in side is respectively 0.8-1.1 rice, 0.8-1.1 rice, 0.2 meter, and side's lid is apart from closed chamber top 0.2-0.3 rice, and side's lid inwall is a minute surface, and level is to being furnished with 10-15 root quartz electric heating pipe in side's lid; Closed chamber bottom intermediate vertical is provided with exhanst gas outlet mechanism.
Described exhanst gas outlet mechanism comprises vertically disposed flue gas body, and the flue gas body is a cylindrical tube, and it comprises inducer, expanding section, bringing-up section, steady flow segment, contraction section and outlet section from the bottom to top respectively; Its inducer diameter is 1.8-2 centimetre; Its expanding section is horn-like; Its bringing-up section and steady flow segment diameter are 5-6 centimetre, and the bringing-up section height is 15-18 centimetre, and the steady flow segment height is 10-12 centimetre; Be axially arranged with resistive heater in the described bringing-up section, axially be laid with barretter in the described steady flow segment; Contraction section is for horn-like.
The inducer of described flue gas body is being communicated with smoke generation mechanism by tobacco transmission pipe, and smoke generation mechanism comprises smoke tank and tobacco transmission pipe, and tobacco transmission pipe is provided with control valve and DC voltage air exhauster, and smoke generation mechanism is positioned at the closed chamber outside.
Described flue gas body material is an aluminium alloy.
The bringing-up section of described flue gas body, steady flow segment, contraction section outer wall are provided with insulation course.
Vertical parallel is provided with 50-60 root hollow barretter in the steady flow segment of described flue gas body, and the barretter diameter is the 1.8-2 millimeter.
Described flue gas body outlet section diameter is 1-3 centimetre.
Described exhanst gas outlet mechanism is positioned at the closed chamber inner bottom part.
The actual plume motion of incipient fire flue gas under this device simulation reconstruction large space thermally stratified layer environment, its useful technique effect is embodied in following several aspect:
1, Shi Yan controllability: thermally stratified layer ambient air temperature, exhanst gas outlet flow velocity and outlet temperature are all controlled in the experiment, regulate heating as the thermally stratified layer surrounding air by AC transformer, heating power can be finely tuned, the difference of enclosure space top and bottom air themperature can be controlled in about 20 ℃, and the air themperature precision is controlled at about 0.5 ℃; The exhanst gas outlet flow velocity is owing to adopt the direct current air exhauster to realizing flue gas at pipeline transportation, and the stack gas exit velocity precision is controlled at about 0.01 meter per second, adopts the inner heating of resistive heater, and the exhanst gas outlet temperature accuracy is controlled at about 0.5 ℃;
2, Shi Yan extendability: general fire test can directly place closed chamber with miniwatt fire smoke tank, thereby can study the moving situation of actual fire smoke plume under the thermally stratified layer environment; Can outside closed chamber, realize producing cigarette and transporting on the other hand by smoke generation mechanism, because exhanst gas outlet mechanism adopts modes such as controllable flow rate, flow, outlet diameter, can study under the identical heat buoyancy flux condition, motion conditions under the different materials fire smoke plume thermally stratified layer environment, thus factors such as investigation different materials smoke density transport the actual influence of rule and rising maximum height to flue gas;
3, Shi Yan repeatability: since the experiment condition controllable parameters, the repeatable height of experiment.
Description of drawings
Fig. 1 is a structural representation of the present invention,
Fig. 2 is the exhanst gas outlet structural scheme of mechanism,
Fig. 3 is the smoke movement design sketch that glows of cotton cord in the closed chamber,
Fig. 4 is a diesel oil oil sump fire smoke movement design sketch in the closed chamber.
Embodiment
Below in conjunction with accompanying drawing 1, Fig. 2, Fig. 3, Fig. 4, be further described by 1,2,3,4 couples of the present invention of embodiment.
Embodiment 1:
When exhanst gas outlet mechanism 20 is arranged in the middle of closed chamber 1 bottom, be applicable to research different materials rotational symmetry center plume or jet fire smoke, under identical exhanst gas outlet diameter, velocity of discharge and hot-air ambient temperature conditions, the moving situation of fire smoke under the thermally stratified layer environment investigated the influence of fire smoke density to smoke movement under the thermally stratified layer environment and rising maximum height.Wherein, during the outlet of conversion exhanst gas outlet mechanism 20 different-diameters, be applicable under the identical velocity of discharge of research, the motion conditions of different outlet diameter rotational symmetry center flue gas under the thermally stratified layer environment.
As shown in Figure 1, a kind of flue gas plume movement simulated experiment apparatus in thermal stratification surroundings comprises closed chamber 1, its level cross-sectionn is a square or rectangular, and its length is respectively 1.2 meters, 1.2 meters, 2 meters, also comprises smoke generation mechanism, data acquisition and processing mechanism and smoke evacuation mechanism.The side of being equipped with, closed chamber 1 inner top below lid 2, side's lid 2 lengths are respectively about 1.1 meters, 1.1 meters, 0.2 meter, 0.3 meter on side lid 2 apart from closed chamber 1 top, side's lid inwall is a minute surface, 15 quartz heating-pipes 3 are installed in the minute surface, minute surface plays the effect that reduces heat absorption when quartz heating-pipe 3 heating, the short transverse of one sidewall is equipped with scale 4, by the sensing data line 12 three row's temperature sensors 11 that also have been installed in series, closed chamber 1 is connecting outside data acquisition and processing mechanism by lead; Closed chamber 1 top is being communicated with smoke evacuation mechanism, and its bottom intermediate vertical is being communicated with exhanst gas outlet mechanism 20, and the one sidewall is equipped with view window 5;
Smoke evacuation mechanism comprises smoke exhaust pipe 9, and smoke evacuation switch 8 is installed by the inflow point of smoke exhaust pipe 9, and its endpiece is equipped with induced-draft fan 10;
Data acquisition and processing mechanism comprise three row's temperature sensors 11, sensing data line 12, electronic balance 18 and computing machine 6;
Smoke generation mechanism comprises smoke tank 17, and smoke tank 17 is being communicated with exhanst gas outlet mechanism 20 inducers 21 by tobacco transmission pipe 14; Control valve 15 and direct current air exhauster 16 are installed on the tobacco transmission pipe 14; Direct current air exhauster 16 is realized speed governing by d-c transformer 13;
As shown in Figure 2, exhanst gas outlet mechanism 20 comprises vertically disposed flue gas body, and the flue gas body is a cylindrical tube, and it comprises inducer 21, expanding section 22, bringing-up section 23, steady flow segment 24, contraction section 25 and outlet section 26 from the bottom to top respectively; Its inducer diameter is 2 centimetres; Its expanding section is horn-like; Its bringing-up section and steady flow segment diameter are 5 centimetres, be axially installed with resistive heater 30 in the described bringing-up section, vertical parallel is provided with 50-60 root hollow barretter 29 in the steady flow segment, and the barretter diameter is the 1.8-2 millimeter, the bringing-up section height is 15 centimetres, and the steady flow segment height is 10 centimetres; Contraction section is for horn-like; The outlet section diameter is 1-3 centimetre.Flue gas body material is an aluminium alloy, and the bringing-up section 23 of flue gas body, steady flow segment 24, contraction section 25 outer walls are provided with insulation course 28.
Before the experiment, smoking material and each measurement mechanism are ready to, closed chamber induced-draft fan 10 switch 8 of cutting out, discharge fume cuts out, the control valve 15 and the direct current air exhauster 16 of tobacco transmission pipe are closed.
During experiment, quartz heating-pipe 3 energisings at top are carried out preheating by 19 pairs of closed chambers of AC transformer, 1 internal environment air, initial preheating watt level and regulate control according to thermally stratified layer requirement of strength and the real-time displayed value of temperature sensor preheating time, initial pre-thermal power is generally bigger, and preheating time is longer.Monitor according to the thermally stratified layer environment temperature, behind closed chamber top heating certain hour, treat that temperature sensor vertically is linear distribution to topdown approach, when the vertical direction temperature is linear distribution and thermally stratified layer intensity near setting value, pre-thermal power is turned down, this moment, closed chamber interior volume three row's temperature sensors 11 temperature distributing rule basically identicals also can keep certain hour, showed that linear thermally stratified layer environment tends towards stability;
In to closed chamber 1 inner air preheating, by AC transformer 19 heating of powering, heating power is regulated according to setting value to the resistive heater 30 of exhanst gas outlet mechanism 20; Simultaneously, in smoke tank 17, place different fire material (as the cotton cords that glows, the normal heptane naked light) etc., the fire material is positioned over and measures its burning quality loss on the electronic balance 18 of smoke tank 17, the flue gas that burning produces is after control valve 15 is opened, be transported to exhanst gas outlet mechanism 20 through direct current air exhauster 16 by tobacco transmission pipe 14, herein, flue gas has uniform temperature by 20 inner resistive heater 30 heating of exhanst gas outlet mechanism, through steady flow segment 24, behind the contraction section 25, enter the closed chamber 1 of different thermally stratified layer intensity by different-diameter column outlet 27, because flue gas flow, flow velocity, Controllable Temperature, can obtain the flue gas plume of different heat buoyancy flux, and repeatability is high;
At exhanst gas outlet mechanism 20 smoke outlets, measure exhanst gas outlet temperature and flue gas plume temperature, adopt the shooting mode to obtain the outlet diagram picture simultaneously, the methods analyst of employing graphical analysis obtains the speed of exhanst gas outlet; The flue gas plume generally can not rise to ceiling in enclosure space thermally stratified layer environment, thereby form a mushroom cloud shape, by the closed chamber view window, adopt the shooting analysis mode of image capturing system 7, obtain its maximum height according to the enclosure space flue gas in the relative position analysis of scale; Discharge fume after every group of experiment finishes, during smoke evacuation, open smoke evacuation switch 8 earlier, start induced-draft fan 10 then, flue gas volume amount in the smoke evacuation time general perceived model space and deciding after smoke evacuation finishes, waits that enclosure space steady air current such as certain hour is static to carry out next group experiment again.
Cotton cord and diesel oil fire smoke movement effect respectively as shown in Figure 3, Figure 4 under the closed chamber 1 thermally stratified layer environment.
Embodiment 2:
When exhanst gas outlet mechanism 20 is arranged in closed chamber 1 sidewall, be applicable to research different materials wall plume or wall jet fire smoke, under identical exhanst gas outlet diameter, velocity of discharge and hot-air ambient temperature conditions, the moving situation of fire smoke under the thermally stratified layer environment, thus of the influence of fire smoke density investigated to motion of wall fire smoke and rising maximum height under the thermally stratified layer environment.Wherein, during the outlet of conversion exhanst gas outlet mechanism 20 different-diameters, be applicable under the identical velocity of discharge of research, the motion conditions of different outlet diameter wall fire smokes under the thermally stratified layer environment.
Experimental technique such as embodiment 1.
Embodiment 3:
When smoke tank 17 directly being arranged in closed chamber 1 inner bottom part middle position, be applicable to that research natural fire flue gas rotational symmetry center plume transports rule under the thermally stratified layer environment.
Closed chamber 1 air themperature control survey method, temperature sensor 11 data acquisition treatment methods, flue gas image acquiring method, smoke exhaust method such as embodiment 1.
Embodiment 4:
When smoke tank 17 being arranged in the closed chamber 1 sidewall, be applicable to that research natural fire flue gas wall plume transports rule under the thermally stratified layer environment.
Experimental technique such as embodiment 3.
Claims (6)
1. a flue gas plume movement simulated experiment apparatus in thermal stratification surroundings comprises closed chamber, smoke generation mechanism, data acquisition and processing mechanism and smoke evacuation mechanism; Described closed chamber inner top below is laid with the thermally stratified layer heating arrangements, and the short transverse of a sidewall is provided with scale, and also connecting by data line is provided with plural temperature sensor, and closed chamber is connecting outside data acquisition and processing mechanism by lead; The closed chamber top is being communicated with smoke evacuation mechanism, and its bottom is being communicated with exhanst gas outlet mechanism, and the one sidewall is provided with view window, it is characterized in that:
Described closed chamber is a rectangular parallelepiped, and its level cross-sectionn is a square or rectangular, and its length is respectively 1-1.2 rice, 1-1.2 rice, 1.8-2 rice; Described thermally stratified layer heating arrangements comprises Yi Fanggai, and lid length in side is respectively 0.8-1.1 rice, 0.8-1.1 rice, 0.2 meter, and side's lid is apart from closed chamber top 0.2-0.3 rice, and side's lid inwall is a minute surface, and level is to being furnished with 10-15 root quartz electric heating pipe in side's lid; Closed chamber bottom intermediate vertical is provided with exhanst gas outlet mechanism;
Described exhanst gas outlet mechanism comprises vertically disposed flue gas body, and the flue gas body is a cylindrical tube, and it comprises inducer, expanding section, bringing-up section, steady flow segment, contraction section and outlet section from the bottom to top respectively; Its inducer diameter is 1.8-2 centimetre; Its expanding section is horn-like; Its bringing-up section and steady flow segment diameter are 5-6 centimetre, and the bringing-up section height is 15-18 centimetre, and the steady flow segment height is 10-12 centimetre; Be axially arranged with resistive heater in the described bringing-up section, axially be laid with barretter in the described steady flow segment; Contraction section is for horn-like;
The inducer of described flue gas body is being communicated with smoke generation mechanism by tobacco transmission pipe, and smoke generation mechanism comprises smoke tank and tobacco transmission pipe, and tobacco transmission pipe is provided with control valve and DC voltage air exhauster, and smoke generation mechanism is positioned at the closed chamber outside.
2. a kind of flue gas plume movement simulated experiment apparatus in thermal stratification surroundings according to claim 1 is characterized in that: described flue gas body material is an aluminium alloy.
3. a kind of flue gas plume movement simulated experiment apparatus in thermal stratification surroundings according to claim 1 is characterized in that: the bringing-up section of described flue gas body and steady flow segment and contraction section outer wall are provided with insulation course.
4. a kind of flue gas plume movement simulated experiment apparatus in thermal stratification surroundings according to claim 1 is characterized in that: vertical parallel is provided with 50-60 root hollow barretter in the steady flow segment of described flue gas body, and the barretter diameter is the 1.8-2 millimeter.
5. a kind of flue gas plume movement simulated experiment apparatus in thermal stratification surroundings according to claim 1 is characterized in that: described flue gas body outlet section diameter is 1-3 centimetre.
6. a kind of flue gas plume movement simulated experiment apparatus in thermal stratification surroundings according to claim 1 is characterized in that: described smoke generation mechanism is positioned at the closed chamber inner bottom part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102462033A CN101476973B (en) | 2008-12-30 | 2008-12-30 | Flue gas plume movement simulated experiment apparatus in thermal stratification surroundings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102462033A CN101476973B (en) | 2008-12-30 | 2008-12-30 | Flue gas plume movement simulated experiment apparatus in thermal stratification surroundings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101476973A CN101476973A (en) | 2009-07-08 |
| CN101476973B true CN101476973B (en) | 2010-06-23 |
Family
ID=40837718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102462033A Expired - Fee Related CN101476973B (en) | 2008-12-30 | 2008-12-30 | Flue gas plume movement simulated experiment apparatus in thermal stratification surroundings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101476973B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169047B (en) * | 2010-12-15 | 2013-03-13 | 中国空间技术研究院 | A method for determining a plume field thermal effect and a dynamic effect of a 10N thruster |
| CN103411749B (en) * | 2013-08-21 | 2016-08-10 | 中国科学技术大学 | A kind of for studying the experimental provision and experimental technique thereof inducing smoke evacuation system |
| CN104807611B (en) * | 2015-05-04 | 2017-05-31 | 中国科学技术大学 | Flue gas flow rate, turbulivity experimental provision and method based on video |
| CN105973567B (en) * | 2016-06-20 | 2018-10-30 | 浙江大学 | Hydrothermal solution plume simulator and analogy method |
| CN106781987A (en) * | 2017-03-08 | 2017-05-31 | 南京工业大学 | A kind of metro depot hybrid ventilation analogue experiment installation and experimental technique |
| CN109323848A (en) * | 2018-11-13 | 2019-02-12 | 南京工业大学 | A kind of device and method that simulated environment wind acts on offline fire source induction fire whirl |
| CN109612682A (en) * | 2018-12-24 | 2019-04-12 | 上海理工大学 | A kind of jet stream movement measuring device in scaled model based on PIV |
| CN110148348A (en) * | 2019-06-06 | 2019-08-20 | 应急管理部四川消防研究所 | Large size city synthesis fire test reduced scale platform data test macro |
| CN110779674B (en) * | 2019-11-05 | 2021-01-12 | 辽宁工程技术大学 | Experimental device and experimental method for determining ventilation thermal resistance of roadway in mine fire period |
| CN111261011B (en) * | 2020-02-17 | 2020-11-24 | 中国矿业大学 | Mine fire simulation experiment platform and experiment method |
| CN112197931B (en) * | 2020-10-28 | 2021-06-18 | 中国科学院力学研究所 | Control method of pure gas jet wind tunnel |
| CN113433162A (en) * | 2021-05-20 | 2021-09-24 | 中国舰船研究设计中心 | Electric heating control measurement system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270178C (en) * | 2002-04-04 | 2006-08-16 | 中国科学技术大学 | A fire hazard detecting integrated model experiment checkout apparatus |
-
2008
- 2008-12-30 CN CN2008102462033A patent/CN101476973B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270178C (en) * | 2002-04-04 | 2006-08-16 | 中国科学技术大学 | A fire hazard detecting integrated model experiment checkout apparatus |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2002-277346A 2002.09.25 |
| 方俊，等.温度分层环境下火灾烟气羽流上升高度公式分析.安全与环境学报6 4.2006,6(4),93-98. |
| 方俊,等.温度分层环境下火灾烟气羽流上升高度公式分析.安全与环境学报6 4.2006,6(4),93-98. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101476973A (en) | 2009-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101476973B (en) | Flue gas plume movement simulated experiment apparatus in thermal stratification surroundings | |
| CN106971666B (en) | A kind of multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform | |
| CN103076359B (en) | Device for detecting heat transfer coefficient of building enclosing structure on site | |
| CN109164393B (en) | Battery thermal runaway experimental device, system and method | |
| CN108828457B (en) | Battery thermal runaway experimental device and system thereof | |
| CN102129806B (en) | Atmospheric environmental simulation device | |
| CN108050773B (en) | Drying device capable of measuring color and form change of material in real time | |
| CN103575559A (en) | Test room for evaluating comfort of air conditioner | |
| CN104167118A (en) | Simulation experiment apparatus for ship fire disaster | |
| CN105911092A (en) | Experiment device for researching underground space top soil heat accumulation and release evolution laws | |
| CN102840963A (en) | Compound gas flow generation device under mutual action of atmosphere turbulence and laser | |
| CN110794000B (en) | Radiation-convection coupling heating controllable atmosphere pyrolysis experiment system and test method | |
| CN104749347A (en) | Experimental device for researching evolution law of soil temperature and humidity field of subway running tunnel | |
| RU88147U1 (en) | STAND FOR IMITATION OF HEAT MODES | |
| CN204964429U (en) | Coefficient of convective heat transfer , convective mass transfer coefficient testing arrangement | |
| CN107421855B (en) | A kind of device and its measuring method of steady state method measuring and calculating porous material mass tranfer coefficient | |
| Cieślikiewicz et al. | Development of the experimental stand for investigation of heating and drying phenomena in the porous building materials with one surface of the sample exposed to the flowing air | |
| CN201716199U (en) | Detection device of heating radiators | |
| CN105136848A (en) | Convective heat transfer coefficient and convective mass transfer coefficient test device and method | |
| Cieślikiewicz et al. | Development of the experimental stand with centrally located specimen for the investigation of heat and moisture phenomena in porous building materials | |
| CN204142664U (en) | A kind of miniature calorimeter | |
| CN102356925A (en) | Tobacco baking equipment | |
| CA1189353A (en) | Apparatus for the continuous measurement of the heating power of a gas | |
| CN103775059B (en) | Secondary heat exchange is noninductive heated-air circulation oven | |
| CN105486714A (en) | Measurement apparatus for heat loss of metallic glass sealing type evacuated collector tube in high temperature state |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20161230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |