CN101413933A - Flow, heat transfer and heat-absorbing reaction integrative measuring apparatus of supercritical fluid - Google Patents
Flow, heat transfer and heat-absorbing reaction integrative measuring apparatus of supercritical fluid Download PDFInfo
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- CN101413933A CN101413933A CNA2007101759762A CN200710175976A CN101413933A CN 101413933 A CN101413933 A CN 101413933A CN A2007101759762 A CNA2007101759762 A CN A2007101759762A CN 200710175976 A CN200710175976 A CN 200710175976A CN 101413933 A CN101413933 A CN 101413933A
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- measuring apparatus
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- 238000012546 transfer Methods 0.000 title claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 30
- 239000012530 fluid Substances 0.000 title claims abstract description 27
- 239000000446 fuel Substances 0.000 claims abstract description 53
- 238000012360 testing method Methods 0.000 claims abstract description 45
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 39
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 39
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 39
- 238000004227 thermal cracking Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The invention provides a device used for comprehensive measurement for flowing, heat transfer and endothermic reaction of supercritical fluid, comprising a hydrocarbon fuel container which is connected with one end of a testing section; the other end of the testing section is connected with a testing instrument; the testing section is internally provided with a micro-channel and the external wall thereof is provided with a heater; a thermocouple and a thermal current density sensor between the micro-channel and the heater; the thermocouple and the thermal current density sensor are respectively connected with a data acquisition and recording instrument; the heater which is arranged on the external wall of the testing section heats the testing section; the hydrocarbon fuel passes through the micro-channel in the testing section and brings away a great amount of heat in a way of physical heat sink and chemical heat sink so as to achieve the object of effectively cooling the testing section; composition analysis is carried out on the thermal-cracked hydrocarbon fuel in the testing instrument; the thermocouple and the thermal current density sensor respectively collect the temperature and the thermal current quantity of the testing section and input the data into the data acquisition and recording instrument.
Description
Technical field
The present invention relates to a kind of measurement mechanism, relate in particular to a kind of under supercriticality, the flowing of fluid, heat transfer and absorbing reaction integrative measuring apparatus.
Background technology
When hypersonic aircraft flies in the atmospheric envelope high speed, because serious pneumatic heating makes the aircraft wall surface temperature very high, the very exothermic of scramjet engine firing chamber fuel combustion also causes the thermal force of engine overweight simultaneously, thermal environment is extremely abominable, in order to ensure safe, stable, the flight reliably of aircraft, must adopt efficient cooling provision.Adopting the self-contained hydrocarbon fuel of aircraft that the active cooling is carried out at contour hot-fluid position, firing chamber should be optimal selection.In the cooling procedure, directly enter supercriticality after the hydrocarbon fuel heat absorption, without two-phase region by liquid state.One of notable feature of supercritical carbon hydrogen fuel is near the rapid variation of physical parameter critical point, cause it to flow and heat transfer and thermonegative reaction characteristic all have remarkable difference with normal rerum natura fluid, thereby cooling effect and thermal cracking products distribution etc. are produced material impact, and will further influence the combustion characteristics in the firing chamber.Therefore, press for to heat absorbing type hydrocarbon fuel extraordinary under super critical condition flow, heat transfer and thermonegative reaction characteristic carry out system's further investigation.
Summary of the invention
The object of the present invention is to provide the flowing of a kind of supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus, with supercritical carbon hydrogen fuel extraordinary flowed, the real-time Measurement and analysis of heat transfer and thermonegative reaction characteristic.
For achieving the above object, the flowing of supercritical fluid provided by the invention, heat transfer and absorbing reaction integrative measuring apparatus, it includes:
One hydrocarbon fuel container, an end of connection test section, the other end of this test section connects a tester;
The structure of this test section is: inner is micro-channel, and outer wall is provided with well heater, is provided with thermopair and heat-flow density sensor between microchannel and the well heater; This thermopair is connected a data acquisition recorder respectively with heat-flow density sensor;
Well heater by the test section outer wall heats test section; Hydrocarbon fuel stream after tested the section micro-channel in, take away a large amount of heats in the mode that physics is heat sink and chemistry is heat sink, and the big molecule heat absorption of hydrocarbon fuel after heat is cracked into the micromolecule of easier burning, reaches the purpose of test section effectively being cooled off and improves burning efficiency.
Hydrocarbon fuel after the thermal cracking to tester carries out proximate analysis.
Thermopair and heat-flow density sensor be interior temperature and the heat flow density data of collecting test section respectively, and in the input data acquisition recorder.
The flowing of described supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus, wherein the hydrocarbon fuel container is connected to test section by a high-pressure pump and flowrate control valve.
The flowing of described supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus wherein are serially connected with primary heater between hydrocarbon fuel container and the test section.
The flowing of described supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus, wherein serial connection one fuel heater behind the primary heater.
The flowing of described supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus wherein are provided with a pressure transducer, and are connected to data acquisition recorder between primary heater and the fuel heater.
The flowing of described supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus, wherein the two ends of test section respectively are provided with a pressure transducer.
The flowing of described supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus, wherein the two ends of test section respectively are provided with a thermopair.
The flowing of described supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus, wherein the hydrocarbon fuel after the thermal cracking carries out proximate analysis to tester behind refrigeratory.
The flowing of described supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus, wherein the hydrocarbon fuel after the thermal cracking cools off through two-stage cooler.
The flowing of described supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus, wherein tester is a chromatograph.
By comprehensive measurement device provided by the invention, can be widely used in the supercritical carbon hydrogen fuel extraordinaryly flow, the experiment measuring analysis of heat transfer and thermonegative reaction characteristic.
Description of drawings
Fig. 1 is a device synoptic diagram of the present invention.
Fig. 2 varies with temperature synoptic diagram for the heat transfer coefficient that apparatus of the present invention measure.
Embodiment
As shown in Figure 1, measurement mechanism of the present invention mainly is made up of hydrocarbon fuel container 1, hydrocarbon fuel pump 2, flowrate control valve 3, safety valve 4, flowmeter 5, primary heater 6, well heater 7, well heater 8, test section 9, refrigeratory 10, fuel collection device 11, data acquiring and recording and display device 12, chromatograph 13, pressure transducer 14, thermopair 15, heat flux sensor 16.Be stored in that hydrocarbon fuel in the hydrocarbon fuel container 1 is delivered to primary heater 6 by high-pressure pump 2 and fuel heater 7 preheats, the hydrocarbon fuel after preheating through two-stage enters test section 9.These test section 9 its inner structures are micro-channels, and hydrocarbon fuel flows in the micro-channel of test section inside, and the outside wall surface of test section 9 is provided with 8 pairs of these test sections of well heater 9 and continues heating.At well heater 8 and test section 9 middle thermopair 15 and the heat flux sensors 16 of being provided with, the temperature of collecting test section and heat flow data, and in the input data acquisition recorder.The hydrocarbon fuel that comes out from test section 9 (can adopt two-stage cooler through subcooler 10, to increase cooling effect) enter again in the hydrocarbon fuel gatherer 11 after the cooling, and sampling from hydrocarbon fuel gatherer 11 regularly, with tester 13 (as: chromatograph) component of the hydrocarbon fuel after the thermal cracking is analyzed.
During actual the use, its process is as follows:
Sampling from hydrocarbon fuel container 1 earlier adopts the initial component of 13 pairs of fuel of chromatograph to carry out test analysis, opens high-pressure pump 2 and data acquisition logging system 12 then, and this data acquisition logging system 12 can be a computing machine.Regulate the hydrocarbon fuel flow to needed value, open primary heater 6, fuel heater 7 and 8 pairs of hydrocarbon fuels of well heater again and heat.After device is stable, carry out detailed measurements and record with the temperature and the pressure of 12 pairs of each measuring points of data acquisition logging system; And sampling from hydrocarbon fuel gatherer 11 regularly, hydrocarbon fuel after the thermal cracking is carried out component analysis, and be analyzed with initial carbon hydrogen fuel component before the thermal cracking, determine that each factor distributes to thermonegative reaction characteristic, component and chemical heat sink cooling power influence rule.
The present invention is respectively arranged with thermopair 15 and pressure transducer 14 at the two ends of test section 9 (import and export of hydrocarbon fuel), measure the Temperature Distribution of test section 9 its outside surfaces and the temperature of test section 9 import and export hydrocarbon fuels, and adopts pressure sensor 14 is measured the pressure at test section 9 two ends; On the basis of detailed measurements, can calculate the Changing Pattern of the temperature, pressure drop, heat transfer coefficient etc. of fuel.
Claims (10)
1, the flowing of a kind of supercritical fluid, heat transfer and absorbing reaction integrative measuring apparatus, it includes:
One hydrocarbon fuel container, an end of connection test section, the other end of this test section connects a tester;
This test section inside is micro-channel, and outer wall is provided with well heater, is provided with thermopair and heat-flow density sensor between microchannel and the well heater; This thermopair is connected a data acquisition recorder respectively with heat-flow density sensor;
Well heater by the test section outer wall heats test section;
Hydrocarbon fuel stream is the interior micro-channel of section after tested, takes away heat, and the big mol ht in the hydrocarbon fuel is cracked into the micromolecule of easy burning.
Hydrocarbon fuel after the thermal cracking to tester carries out proximate analysis;
Thermopair and heat-flow density sensor be the temperature and the heat flow density data of collecting test section respectively, and in the input data acquisition recorder.
2, the flowing of supercritical fluid as claimed in claim 1, heat transfer and absorbing reaction integrative measuring apparatus, wherein, the hydrocarbon fuel container is connected to test section by a high-pressure pump and flowrate control valve.
3, the flowing of supercritical fluid as claimed in claim 1 or 2, heat transfer and absorbing reaction integrative measuring apparatus wherein, are serially connected with primary heater between hydrocarbon fuel container and the test section.
4, the flowing of supercritical fluid as claimed in claim 3, heat transfer and absorbing reaction integrative measuring apparatus, wherein, serial connection one fuel heater behind the primary heater.
5, the flowing of supercritical fluid as claimed in claim 4, heat transfer and absorbing reaction integrative measuring apparatus wherein, are provided with a pressure transducer, and are connected to data acquisition recorder between primary heater and the fuel heater.
6, the flowing of supercritical fluid as claimed in claim 1, heat transfer and absorbing reaction integrative measuring apparatus, wherein, the two ends of test section respectively are provided with a pressure transducer.
7, as the flowing of claim 1 or 6 described supercritical fluids, heat transfer and absorbing reaction integrative measuring apparatus, wherein, the two ends of test section respectively are provided with a thermopair.
8, the flowing of supercritical fluid as claimed in claim 1, heat transfer and absorbing reaction integrative measuring apparatus, wherein, the hydrocarbon fuel after the thermal cracking carries out proximate analysis to tester behind refrigeratory.
9, the flowing of supercritical fluid as claimed in claim 8, heat transfer and absorbing reaction integrative measuring apparatus, wherein, the hydrocarbon fuel after the thermal cracking cools off through two-stage cooler.
10, as the flowing of claim 1 or 8 described supercritical fluids, heat transfer and absorbing reaction integrative measuring apparatus, wherein, tester is a chromatograph.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101759762A CN101413933B (en) | 2007-10-17 | 2007-10-17 | Flow, heat transfer and heat-absorbing reaction integrative measuring apparatus of supercritical fluid |
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|---|---|---|---|
| CN2007101759762A CN101413933B (en) | 2007-10-17 | 2007-10-17 | Flow, heat transfer and heat-absorbing reaction integrative measuring apparatus of supercritical fluid |
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| CN101413933A true CN101413933A (en) | 2009-04-22 |
| CN101413933B CN101413933B (en) | 2010-06-23 |
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| CN102495101A (en) * | 2011-12-14 | 2012-06-13 | 四川大学 | Device and method for measuring heat sink of high-temperature pyrolysis of heat-absorption type hydrocarbon fuel |
| CN102507375A (en) * | 2011-11-09 | 2012-06-20 | 四川大学 | Device for measuring density and flow rate of supercritical cracking product of hydrocarbon fuel, and measurement method thereof |
| CN103249462A (en) * | 2010-09-20 | 2013-08-14 | 安捷伦科技有限公司 | System and process for an active drain for gas-iquid separators |
| CN103308551A (en) * | 2013-06-05 | 2013-09-18 | 中国石油大学(华东) | Experimental device and method for measuring surface coefficient of heat transfer of supercritical carbon dioxide |
| CN103439356A (en) * | 2013-06-05 | 2013-12-11 | 中国石油大学(华东) | Experimental apparatus and method for constant-pressure specific heat measurement of supercritical carbon dioxide |
| CN104061102A (en) * | 2014-06-13 | 2014-09-24 | 天津大学 | Engine fuel supercritical state acquisition device and atomizing experiment system |
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| CN107505352A (en) * | 2017-09-26 | 2017-12-22 | 北京航空航天大学 | The fluid interchange evaluating method and device of hydrocarbon fuel in one-dimensional passage |
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| CN109855676A (en) * | 2018-12-07 | 2019-06-07 | 中国科学院力学研究所 | A kind of high parameter supercritical CO2The test macro and method of flowing and heat transfer characteristic |
| CN111006870A (en) * | 2019-12-17 | 2020-04-14 | 北京理工大学 | Constant volume combustion heat transfer device |
| CN111398342A (en) * | 2020-04-16 | 2020-07-10 | 浙江大学 | Test method based on supercritical carbon dioxide differential scanning calorimeter |
| CN113406141A (en) * | 2021-06-17 | 2021-09-17 | 浙江大学 | Supercritical carbon dioxide micro-channel heat exchange experimental system |
| CN113433033A (en) * | 2021-07-06 | 2021-09-24 | 中国人民解放军国防科技大学 | Simulation device for flow and heat transfer characteristics of water-oil mixture in regenerative cooling channel |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345029A (en) * | 1992-09-22 | 1994-09-06 | Atlantic Richfield Company | Determining fractions of petroleum fuels by supercritical fluid chromatography |
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2007
- 2007-10-17 CN CN2007101759762A patent/CN101413933B/en active Active
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