CN204807492U - Solution -air heat exchanger coefficient of heat transfer surveys device - Google Patents
Solution -air heat exchanger coefficient of heat transfer surveys device Download PDFInfo
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- CN204807492U CN204807492U CN201520534814.3U CN201520534814U CN204807492U CN 204807492 U CN204807492 U CN 204807492U CN 201520534814 U CN201520534814 U CN 201520534814U CN 204807492 U CN204807492 U CN 204807492U
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Abstract
The utility model discloses a solution -air heat exchanger coefficient of heat transfer surveys device. The device is connected through the pipeline by fan, adjusting valve, gas flowmeter, two reducing experts, gas heater, solution -air heat exchanger, tee bend etc. Constitutes gaseous phase fluidic runner. The liquid entrance point and the logical tip of a reducing of solution -air heat exchanger link to each other, and the main aspects that the reducing leads to link to each other with the solution -air heat exchanger, and the tip that the reducing leads to is continuous with fluidflowmeter, installing another reducing at the liquid outlet end of solution -air heat exchanger and leading to, the main aspects that the reducing leads to link to each other with the solution -air heat exchanger, constitute the fluid runner of liquid phase. Temperature, pressure sensor are installed to gaseous exit of heat exchanger, and the liquid of heat exchanger is imported and exported and is installed temperature sensor. This device is used for the coefficient of heat transfer test of solution -air heat exchanger to obtain the high -efficient required data of conducting heat. Adopt gaseous side fluid circulation to utilize, a small amount of make -up gas is adjusted through drain adjusting valve, has practiced thrift the energy loss of experimentation.
Description
Technical field
The utility model relates to heat transfer coefficient of heat exchanger proving installation, especially relates to a kind of gas liquid exchanger heat transfer coefficient determining device.
Background technology
Heat interchanger is because the difference of heat exchange object, the difference of use occasion, the difference of heat transfer medium, cause the of a great variety of heat interchanger, divide from medium physical state difference, primarily of gas-gas heat exchange, solution-air heat exchange, liquid-liquid heat exchange, middle also have some heat exchange relating to phase transformation, for heterogeneity, heat interchanger between different phase medium, its version is different, coefficient of heat conductivity as liquid phase is very high, but the coefficient of heat conductivity of gaseous state phase is very low, such thermal resistance mainly concentrates on gaseous state side, in order to improve heat transfer coefficient, increase heat transfer efficiency, gaseous state side needs to adopt fin extended surface area, improve gas flow rate, forced turbulent disturbances etc. reduce gaseous state side thermal resistance, to improve heat transfer efficiency, then increasing flow perturbation can cause pressure drop to increase, so need the span rationally accepted or rejected between multiple parameter.Therefore, special heat transfer coefficient test evaluation device is just needed for such structure, to obtain the data needed for efficient heat transfer, and can not measure with general heat transfer coefficient testing device, therefore for various heat exchange device, have different heat transfer coefficient testing devices, to obtain the performance parameter of needs.
The research of domestic and international heat exchanger heat transfer coefficient test is more, the application number that Zhang Keqiang as Beijing College of Iron and Steel Technology proposes is 86102931 " heat-conduction coefficient testers ", profit is computerizedd control, heat transfer coefficient between continuous coverage continuous casting secondary cooling water and casting billet surface and heat flow density, by the mensuration of heat transfer coefficient, the structure of di-cold spray nozzle be can design and improve, slab quality and output improved.The application number proposed such as extensively engraving as Harbin Engineering University's model is 201010587371.6 " Multi-functional wide-flowing path one-phase heat convection testing apparatus ", disclose a kind of single phase flow heat transfer experimental provision of multifunctional wide flow process, comprise circulation, electric heating system, measuring system, experimental section four part composition.Circulation is made up of hot water cyclesystem and cold water circulating system two parts; Electric heating system is formed primarily of electric heater and corresponding control system; Measuring system comprises temperature survey, flow measurement, differential pressure measurement and corresponding data acquisition system (DAS); Experimental section is composed in parallel by a double-pipe exchanger and a pipe bundle heat exchanger; Integrate heat-transfer pipe and the heat exchange of pipe bundle heat exchanger single-phase convection and resistance to flow to test, in the very wide reynolds number range of laminar region, zone of transition and turbulent region, the experimental study of heat transfer characteristic and flow resistance characteristics can be carried out the heat-transfer pipe of difformity, different geometrical size and the heat interchanger of different piping mode.The application number that the Yang Shanrang of Northeast China Institute of Electric Power Engineering etc. propose is 200510088762.2 " pipe side convection enhancement Technique dynamic analog synthesis evaluation method and devices ", discloses a kind of method of heat transfer effect for dynamic similation comprehensive evaluation pipe side convection enhancement technology, resistance to flow, Fouling Properties and cleaning characteristics and monitoring, evaluating apparatus.This device simulates the part such as heat interchanger, circulating water cooling device, water supply tank, water leg, water pump, thermostatic regulator, flow measurement device, rubber ball cleaning analogue means and computer monitoring evaluation system that cleaning characteristic is strong composition primarily of tubular type; This monitoring, evaluation method are based on thermoexcell is identical with the basic influence factor of the heat transfer process of common light pipe, the employing enhanced tube that all the other parameters (caliber, length, working medium, Re number) are all identical except object of experiment parameter is parallel with light pipe is placed in the constant water bath of same temperature, to carry out the analogy analysis of enhanced heat exchange and light pipe heat exchange; The contents such as the selection of evaluation experimental operating mode, experiment condition, experimental arrangement, reinforcement technique design optimization are also comprised in the utility model.The application number that the Xu Guoqiang of BJ University of Aeronautics & Astronautics etc. propose is 200410074334.X " a kind of method of testing of convection transfer rate and convection transfer rate sensor thereof ", a kind of sensor directly can measuring convection heat transfer surface convection transfer rate of this disclosure of the invention, this invention is basic theories based on thermal conduction study and the convection transfer rate sensor designed, it directly can obtain the convection transfer rate data on testee surface, also may be used for the convection heat transfer hot-fluid measuring convection heat transfer surface, can be widely used in commercial production.As noted above, heat transfer coefficient of heat exchanger determinator and heat exchanger structure have very strong specific aim, and application number is 86102931 mensuration being only applicable to strand heat transfer coefficient; Application number be 201010587371.6 be applicable to coefficient of heat transfer of glazed heating pipe measure, owing to being measured as medium by water, be not suitable for the measurement of gas medium; Application number is 200510088762.2 mensuration being only applicable to liquid phase medium heat transfer coefficient equally; Although application number is 200410074334.X do not limit heat transfer medium, but measure also inapplicable for the heat transfer coefficient of the gas liquid exchanger of band fin expansion, because it can not measure this important indicator of gas-phase pressure drop, pressure drop to power consumption, to meet subsequent technique demand very important.Although therefore have at present, multiple heat transfer coefficient is tested, evaluating apparatus, does not have the device that a kind of heat transfer coefficient measures, evaluating apparatus can be used in carrying out gas liquid exchanger integration test, evaluation.
Utility model content
The purpose of this utility model is to provide a kind of gas liquid exchanger heat transfer coefficient determining device, can be used for the device different gas phase side fin extend type and pipe arrangement mode being carried out to heat transfer coefficient test, pressure fall-off test and heat transfer efficiency of optimizing structure evaluation.
The technical solution adopted in the utility model is as follows:
The air outlet of blower fan of the present utility model is provided with control valve, and the pipeline of the outlet of control valve is built with gas meter, and band one end of 90 ° of elbow pipelines is connected with the endpiece of gas meter, and the small end that the other end is logical with the first reducing is connected; The large end that the entrance point of gas heater is logical with the first reducing is connected, the endpiece of gas heater is connected with the entrance point of gas liquid exchanger, the large end that the endpiece of gas liquid exchanger is logical with the second reducing is connected, the small end that second reducing leads to is connected with the first end of threeway by band two 90 ° of elbow pipelines, second end of threeway is connected with the air inlet of blower fan, 3rd end drain of threeway is equipped with drain control valve, the fluid course of above formation gas phase; The liquid-inlet end of gas liquid exchanger leads to small end with the 3rd reducing and is connected, and large end is connected with gas liquid exchanger, and the small end that the 3rd reducing is logical is equipped with liquid flowmeter and liquid-inlet side temperature sensor; Be connected with logical the end greatly of the 4th reducing at the liquid outlet end of gas liquid exchanger, the little stomidium that the 4th reducing leads to is built with liquid outlet side temperature sensor, and large end is connected with gas liquid exchanger, the fluid course of above formation liquid phase; The endpiece pipe of gas heater is built with gas feed side pressure sensor and multiple gas feed sides temperature sensor, and the large end pipe that the second reducing leads to is built with gas vent side pressure sensor and multiple gas vent sides temperature sensor.
Described gas feed side temperature sensor is uniform on same circumferential section; Described gas vent side temperature sensor is uniform on same circumferential section.
Described gas heater is electrical heating or the steam heater with automatic temperature-adjusting control system.
The various fins that described gas liquid exchanger arranges and is installed on by a series of heat exchanger tube outside pipe are formed.
The mode that described gas liquid exchanger is arranged by a series of pipe is square, equilateral triangle, become a full member triangle or rectangular arranged.
Described fin is the fin of the prominent wing of the fin of plane, corrugated fin, fin with holes or band.
The beneficial effect that the utility model has is:
Gas liquid exchanger is the heat exchange structure that a kind of thermal resistance mainly concentrates on gas side, therefore needs to carry out augmentation of heat transfer to gas side, comprises expansion fin, increases gas flow-disturbing, increases gas flow rate.But increasing flow perturbation can cause pressure drop to increase; Increase gas flow rate and can increase power consumption, how rationally the span accepted or rejected between multiple parameter is the key of this class formation of design.The utility model by the mensuration of heat transfer coefficient and pressure drop, the isoparametric mensuration of fluid resistance and evaluation, can be optimized the value between each parameter, reaches required heat transfer effect.
This test evaluation device adopts gas side fluid to recycle, and a small amount of make-up gas is regulated by drain control valve, has greatly saved the energy loss of experimentation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the heat exchange element arrangenent diagram of gas liquid exchanger.
Fig. 3 is the side view of the heat exchange element of gas liquid exchanger.
In figure: 1, blower fan, 2, control valve, 3, gas meter, 4, be with 90 ° of elbow pipelines, 5, first reducing leads to, 6, gas heater, 7, gas feed side pressure sensor, 8, gas feed side temperature sensor, 9, gas liquid exchanger, 10, 3rd reducing leads to, 11, liquid-inlet end, 12, liquid flowmeter, 13, liquid-inlet side temperature sensor, 14, gas vent side temperature sensor, 15, gas vent side pressure sensor, 16, be with two 90 ° of elbow pipelines, 17, liquid outlet side temperature sensor, 18, liquid outlet end, 19, drain, 20, drain control valve, 21, threeway, 22, air inlet, 23, fin, 24, heat exchange pipe, 25, second reducing leads to, 26, 4th reducing leads to.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, Figure 2, Figure 3 shows, the air outlet of blower fan 1 of the present utility model is provided with control valve 2, the pipeline of the outlet of control valve 2 is built with flowmeter 3, and one end of band 90 ° of elbow pipelines 4 is connected with the endpiece of flowmeter 3, and the small end that the other end leads to 5 with the first reducing is connected; The large end that entrance point and first reducing of gas heater 6 lead to 5 is connected, the endpiece of gas heater 6 is connected with the entrance point of gas liquid exchanger 9, the large end that endpiece and second reducing of gas liquid exchanger lead to 25 is connected, the small end that second reducing leads to 25 is connected with the first end of threeway 21 by band two 90 ° of elbow pipelines 16, second end of threeway 21 is connected with the air inlet 22 of blower fan 1,3rd end drain 19 of threeway 21 is equipped with drain control valve 20, the fluid course of above formation gas phase; The liquid-inlet end 11 of gas liquid exchanger and logical 10 small ends of the 3rd reducing are connected, hold greatly and are connected with gas liquid exchanger, and the small end that the 3rd reducing leads to 10 is equipped with liquid flowmeter 12 and liquid-inlet side temperature sensor 13; Be connected with large end of the 4th reducing logical 26 at the liquid outlet end 18 of gas liquid exchanger, the 4th reducing leads to the little stomidium of 26 built with liquid outlet side temperature sensor 17, and large end is connected with gas liquid exchanger 6, the fluid course of above formation liquid phase; The endpiece pipe of gas heater 6 leads to the large end pipe of 25 built with gas vent side pressure sensor 15 and multiple gas vent sides temperature sensor 14 built with gas feed side pressure sensor 7 and multiple gas feed sides temperature sensor 8, second reducing.The fluid of gas phase walks fin side, and the fluid of liquid phase is walked in pipe.
Described gas feed side temperature sensor 8 is uniform on same circumferential section; Described gas vent side temperature sensor 14 is uniform on same circumferential section.
Described gas heater 6 is electrical heating or the steam heater with automatic temperature-adjusting control system.
As shown in Figure 2, the fin 23 that described gas liquid exchanger 9 arranges and is installed on by a series of heat exchanger tube 24 outside pipe is formed.
As shown in Figure 3, the mode that described gas liquid exchanger 9 is arranged by a series of pipe is square, equilateral triangle, become a full member triangle or rectangular arranged, pipe arrangement can be single square, equilateral triangle, become a full member triangle or rectangular arranged, or the arrangement of arbitrary two kinds and various shape.
Described fin 23 is fins of the fin of plane, corrugated fin, fin with holes or the prominent wing of band, and fin can be single arrangement, or the arrangement of arbitrary two kinds and various shape.
Embodiment of the present utility model:
The present embodiment adopts the centrifugal high pressure fan of 5KW, heat transfer coefficient for compressor in air separation units water-cooling system heat interchanger carries out testing and optimal design, the pipe diameter of gas flow is 159mm, the pipe diameter of flow channel for liquids is 31mm, size of heat exchanger is 300 × 250 × 400mm, well heater is the electric heater of power 15KW, with Automatic Temperature Control, the liquid of gas liquid exchanger is water mutually, gas is air mutually, the pipe of current is 19mm, fin is straight copper fin, tube row is classified as rounded projections arranged of becoming a full member, spacing of fin is 2.5mm, fin thickness is 0.2mm.Air velocity is from adjustable between 0-20m/s, and the flow velocity of water is adjustable between 0-10m/s, can the working environment of Reality simulation air separation plant refrigeratory.Heat interchanger gas inlet and outlet place is respectively provided with 2 temperature sensors, and get its mean value when calculating as calculated value, heat exchanger inlet and outlet place is respectively provided with pressure transducer, in order to measure Pressure Drop; Fluid inlet and outlet is respectively provided with a temperature sensor and flowmeter.
One of them test example is as follows:
Air side: air mass flow q=600m
3/ h, inlet temperature t
h1=82 DEG C, outlet temperature t
h2=44.5 DEG C.The medial temperature of air is 63 DEG C, as qualitative temperature, and the specific heat C of table look-up to obtain atmospheric density ρ=1.051kg/m3, air
p=1.006kJ/ (kgK), water side-entrance temperature t
c1=25 DEG C, outlet temperature t
c2=33 DEG C
Heat exchange amount Q=ρ qc
p(t
h1-t
h2)
＝1.051×600÷3600×1.006×1000×(82-44.5)
＝6608.2W
By arranging the heat exchange pipe of gas liquid exchanger, the various expansion fins be installed on outside pipe are formed, arrangement as pipe can in square, equilateral triangle, also can be other arrangement modes, fin can be the fin of plane, also can be corrugated fin, can also be with holes, the fin of the prominent wing of band, and by with different flow, the change combination of blast, by heat exchanger out temperature, the mensuration of flow, heat transfer coefficient can be recorded easily according to the method that above embodiment is identical, and according to Practical Project demand, heat exchanger combination property is evaluated, to obtain desirable heat exchanger structure and operational factor.
Claims (6)
1. a gas liquid exchanger heat transfer coefficient determining device, it is characterized in that: the air outlet of blower fan (1) is provided with control valve (2), the pipeline of the outlet of control valve (2) is built with gas meter (3), be with one end of 90 ° of elbow pipelines (4) to be connected with the endpiece of gas meter (3), the other end is connected with the small end of the first reducing logical (5), the entrance point of gas heater (6) is connected with the large end of the first reducing logical (5), the endpiece of gas heater (6) is connected with the entrance point of gas liquid exchanger (9), the endpiece of gas liquid exchanger (9) is connected with the large end of the second reducing logical (25), the small end of the second reducing logical (25) is connected with the first end of threeway (21) by band two 90 ° elbow pipelines (16), second end of threeway (21) is connected with the air inlet (22) of blower fan (1), 3rd end drain (19) of threeway (21) is equipped with drain control valve (20), more than form the fluid course of gas phase, the liquid-inlet end (11) of gas liquid exchanger (9) is connected with logical (10) small end of the 3rd reducing, large end is connected with gas liquid exchanger (9), and the small end of the 3rd reducing logical (10) is equipped with liquid flowmeter (12) and liquid-inlet side temperature sensor (13), be connected with large end of the 4th reducing logical (26) at the liquid outlet end (18) of gas liquid exchanger (9), the little stomidium of the 4th reducing logical (26) is built with liquid outlet side temperature sensor (17), large end is connected with gas liquid exchanger (9), the fluid course of above formation liquid phase, the endpiece pipe of gas heater (6) is built with gas feed side pressure sensor (7) and multiple gas feed side temperature sensor (8), and the large end pipe of the second reducing logical (25) is built with gas vent side pressure sensor (15) and multiple gas vent side temperature sensor (14).
2. a kind of gas liquid exchanger heat transfer coefficient determining device according to claim 1, is characterized in that: described multiple gas feed side temperature sensor (8) is uniform on same circumferential section; Described multiple gas vent side temperature sensor (14) is uniform on same circumferential section.
3. a kind of gas liquid exchanger heat transfer coefficient determining device according to claim 1, is characterized in that: described gas heater (6), is electrical heating or the steam heater with automatic temperature-adjusting control system.
4. a kind of gas liquid exchanger heat transfer coefficient determining device according to claim 1, is characterized in that: the various fins (23) that described gas liquid exchanger (9) arranges and is installed on by a series of heat exchanger tube (24) outside pipe are formed.
5. a kind of gas liquid exchanger heat transfer coefficient determining device according to claim 4, is characterized in that: the mode that described gas liquid exchanger (9) is arranged by a series of pipe is square, equilateral triangle, become a full member triangle or rectangular arranged.
6. a kind of gas liquid exchanger heat transfer coefficient determining device according to claim 4, is characterized in that: described various fin (23) is the fin of the prominent wing of the fin of plane, corrugated fin, fin with holes or band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520534814.3U CN204807492U (en) | 2015-07-22 | 2015-07-22 | Solution -air heat exchanger coefficient of heat transfer surveys device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520534814.3U CN204807492U (en) | 2015-07-22 | 2015-07-22 | Solution -air heat exchanger coefficient of heat transfer surveys device |
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| Publication Number | Publication Date |
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| CN204807492U true CN204807492U (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520534814.3U Withdrawn - After Issue CN204807492U (en) | 2015-07-22 | 2015-07-22 | Solution -air heat exchanger coefficient of heat transfer surveys device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067661A (en) * | 2015-07-22 | 2015-11-18 | 浙江大学 | Gas-liquid heat exchanger heat transfer coefficient determination apparatus |
| CN107643187A (en) * | 2017-11-07 | 2018-01-30 | 北京奥博汽车电子电器有限公司 | Air heater comprehensive performance testing system |
| CN112666215A (en) * | 2021-01-12 | 2021-04-16 | 河北科技大学 | Fused salt air heat exchange performance testing device |
-
2015
- 2015-07-22 CN CN201520534814.3U patent/CN204807492U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067661A (en) * | 2015-07-22 | 2015-11-18 | 浙江大学 | Gas-liquid heat exchanger heat transfer coefficient determination apparatus |
| CN105067661B (en) * | 2015-07-22 | 2018-06-12 | 浙江大学 | Gas liquid exchanger heat transfer coefficient determining device |
| CN107643187A (en) * | 2017-11-07 | 2018-01-30 | 北京奥博汽车电子电器有限公司 | Air heater comprehensive performance testing system |
| CN107643187B (en) * | 2017-11-07 | 2023-09-05 | 北京奥博汽车电子电器有限公司 | Air Heater Comprehensive Performance Test System |
| CN112666215A (en) * | 2021-01-12 | 2021-04-16 | 河北科技大学 | Fused salt air heat exchange performance testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151125 Effective date of abandoning: 20180612 |
|
| AV01 | Patent right actively abandoned |