CN109975050A - A kind of flowing of plate-fin heat exchanger and testing device for heat transferring performance and its method - Google Patents
A kind of flowing of plate-fin heat exchanger and testing device for heat transferring performance and its method Download PDFInfo
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- CN109975050A CN109975050A CN201910277421.1A CN201910277421A CN109975050A CN 109975050 A CN109975050 A CN 109975050A CN 201910277421 A CN201910277421 A CN 201910277421A CN 109975050 A CN109975050 A CN 109975050A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
Abstract
The invention discloses a kind of flowing of plate-fin heat exchanger and testing device for heat transferring performance and its methods, belong to heat exchanger test device field.In steam side, saturated vapor is generated in steam generator, and vapor superheater is entered by main steam pipe road through pressure reducing valve, is heated to be overheat dry flue gas；Dry flue gas enters heat exchanger test specimen and exchanges heat with air, is condensated into liquid and is stored in condensation water storage bin.In air side, the air by heat exchanger test specimen enters circulation air path, after nozzle, is fed sequentially into surface air cooler by centrifugal blower and reheater carries out heat and wet treatment, form constant temperature and humidity air；Last constant temperature and humidity air carries out heat exchange after cowling panel rectifies, into heat exchanger test specimen and steam.The present invention solves the steam condensation number as caused by steam partial condensation and detects inaccurate and air intake state with system stability is poor, tests the problems such as inaccurate caused by environment and operating condition variation and variation.
Description
Technical field
The invention belongs to thermal parameter measurement and control technical fields, and in particular to a kind of flowing of plate-fin heat exchanger and pass
Heat performance testing device and its control method.
Background technique
Plate-fin heat exchanger has heat transfer efficiency height, unit volume heat-transfer surface as a kind of typical compact heat exchanger
Greatly, it compact-sized, the advantages that adaptive temperature range is wide, has been widely used in petrochemical industry, Cryogenic air separation, aerospace
Equal numerous areas.
The fin heat transfer unit most crucial as plate-fin heat exchanger, affects the flowing and biography of plate-fin heat exchanger entirety
Hot property.Different fin configurations, such as plain fin, saw tooth fin, perforated fin and louvered fin, flowing and conductivity of heat
It can be not quite similar.The fin of same form, different structure size, different processing technologys can also seriously affect the flowing and biography of fin
Hot property symbolizes the different f factors and the j factor with the relationship of Re.So how accurately to measure fin in different form and structure
Under the f factor and the j factor with one of the primary study content that the relationship of Re is always in augmentation of heat transfer field, while be also plate wing
Formula heat exchanger manufacturing enterprise important content of interest.
The flowing of plate-fin heat exchanger fin and heat-transfer character measurement mainly utilize thermal resistance separation method.Two kinds of heat exchange are situated between
Matter carries out heat exchange in heat exchanger test specimen, using the fluid heat transferring coefficient of known side heat exchange surface, measures another side liquid
Thermal parameter, to obtain the flow resistance coefficient and heat transfer coefficient of unknown side.Currently, Air-Water or air-is in the industry cycle widely used
Two media of the oil as heat exchange, air side are unknown side, and water (oil) side is known side, to measure air-side heat exchanger surface
Flowing and heat transfer property.But in practical applications, fluid exchanges heat in plate-fin heat exchanger and is usually associated with phase transformation, utilizes
The heat transfer property that single-phase fluid side determines fin cannot really reflect plate-fin heat exchanger heat transfer process, to influence test result
Accuracy.On the other hand, in air side, air is that the air of environment is introduced directly into heat exchanger by the wind tunnel system of open type
Heat exchange is carried out, therefore, heat exchanger entrance air condition (temperature and humidity) is by ambient enviroment and the shadow of system running state
It rings, cannot achieve and be precisely controlled, influence the accuracy of test.
Summary of the invention
The present invention is directed to the deficiency of existing test macro, it is intended to propose that a kind of measurement plate-fin heat exchanger flows and conductivity of heat
The test device of energy, the device can accurately control heat exchanger and enter (cold) degree of mouth steam overheat and heat exchanger entrance air (out)
Temperature.
To achieve the above object, the present invention it is specific the technical solution adopted is as follows:
A kind of flowing of plate-fin heat exchanger and testing device for heat transferring performance, including steam side and air side；The steam
Side includes steam generator, pressure reducing valve, vapor superheater, heat exchanger test specimen, condensation water storage box, liquid circulation pump；Described
The outlet of steam generator is connected by one end of first pipe and pressure reducing valve, and the other end of pressure reducing valve by second pipe and steams
The import of gas superheater connects, and the second pipe is equipped with the first temperature test point and first pressure test point, steam mistake
The outlet of hot device is connect by third pipeline with the import of heat exchanger test specimen, and the third pipeline is tested equipped with second temperature
Point and second pressure test point；The outlet of heat exchanger test specimen connects condensation water storage box by the 4th pipeline, sets on the 4th pipeline
There are fluid flowmeter, third temperature test point and third pressure testing point；The bottom of condensation water storage box is equipped with outlet, and passes through
Liquid circulation pump is connect with steam generator water inlet；
The air side includes nozzle, centrifugal blower, surface air cooler, cooling water pump, constant temperature cold water storage cistern, reheater, circulation
Air duct, cowling panel；The heat exchanger test specimen is arranged in circulation air path, along clockwise from heat exchanger test specimen in circulation air path
Direction is successively arranged nozzle, centrifugal blower, surface air cooler, reheater and cowling panel；Air duct between heat exchanger test specimen and nozzle
Inside it is equipped with the second humidity measurement point and the 5th temperature test point；Second pressure difference test point is set to the upstream and downstream of air duct inner nozzle,
For with the air mass flow in air duct is measured jointly after Nozzle combination；The water outlet of the surface air cooler connects constant temperature cold water
The water inlet of case, the water outlet of constant temperature cold water storage cistern connect the water inlet of surface air cooler by cooling water pump, constitute circulating chilled water circuit；Institute
The first humidity measurement point and the 4th temperature test point are equipped in air duct between the cowling panel stated and heat exchanger test specimen；First pressure difference
The upstream and downstream of heat exchanger test specimen in air duct is arranged in test point, pressure difference in the air duct for measuring heat exchanger test specimen two sides.
Preferably, the first temperature test point, second temperature test point, third temperature test point, the 4th temperature
At test point and the 5th temperature test point, it is separately installed with the temperature sensor for measuring temperature at test point.
Preferably, pacifying respectively at the first pressure test point, second pressure test point and third pressure testing point
Equipped with the pressure sensor for measuring pressure at test point.
Preferably, being separately installed with and being surveyed for measuring at the first humidity measurement point and the second humidity measurement point
The air humidity sensor of humidity at pilot.
Preferably, being separately installed with and being surveyed for measuring at the first pressure difference test point and the second pressure difference test point
The differential pressure transmitter of pressure difference at pilot.
Preferably, further include self-con-tained unit, the operation for the sensing data according to each test point to test device
Parameter carries out closed-loop control.
Preferably, the operating parameter includes the steam degree of superheat of heat exchanger test specimen entrance, the outlet of heat exchanger test specimen
Steam degree of supercooling, air themperature and humidity into heat exchanger test specimen.
It flows and conducts heat another object of the present invention is to provide a kind of plate-fin heat exchanger using above-mentioned test device
Performance test methods, its step are as follows:
In steam side, saturated vapor is generated in steam generator, by second pipe input steam overheat after pressure reducing valve
Device is simultaneously heated to be overheat dry flue gas；It overheats dry flue gas and passes through third pipeline input heat exchanger test specimen, the constant temperature and humidity with air side
Air exchanges heat, and is condensated into liquid and is stored in condensation water storage box；
In air side, the air after heat exchanger test specimen heat exchange enters circulation air path, after nozzle, in centrifugation wind
Surface air cooler and reheater are passed sequentially through under the driving of machine, carries out heat and wet treatment, form constant temperature and humidity air；Last constant temperature and humidity is empty
Gas carries out heat exchange after cowling panel rectifies, into heat exchanger test specimen and steam；
In steam side, steam pressure is detected by first pressure test point, and the aperture by controlling pressure reducing valve realizes closed loop control
System；The steam degree of superheat into heat exchanger test specimen is calculated by second temperature test point and second pressure test point, and is passed through
The heating amount for controlling vapor superheater realizes closed-loop control；The steam degree of supercooling of heat exchanger test specimen outlet is by third temperature test point
It is calculated with third pressure testing point, and closed-loop control is realized by the heating power of control steam generator；Steam condensation
Amount is detected by the first flow test point for being mounted on heat exchanger test specimen exit；
In air side, the air pressure difference for flowing through heat exchanger test specimen is detected by the first pressure difference test point；Air in circulation air path
Flow is obtained by pressure difference before and after the second pressure difference test point measurement nozzle, and realizes closed loop control by the revolving speed of control centrifugal blower
System；Air themperature and humidity into heat exchanger test specimen are detected by the 4th temperature test point and the first humidity measurement point respectively,
Middle air themperature realizes closed-loop control by the heating amount of control reheater；Air themperature and the humidity difference of heat exchanger test specimen out
It is detected by the 5th temperature test point and the second humidity measurement point.
Preferably, cooling water is provided by constant temperature cold water storage cistern in the surface air cooler, and recycled by cooling water pump.
Preferably, the liquid in the condensation water storage box, is delivered to steam through liquid circulation pump again
It is recycled in device.
(cold) degree of overheat that the present invention enters mouth (out) in heat exchanger test specimen by control steam, guarantees steam with certain mistake
Temperature enters and leaves heat exchanger test specimen with certain degree of supercooling, solves steam and enters heat exchanger test specimen with two phase flow or changing
Steam condensation number caused by partial condensation occurs in hot device test specimen and detects inaccurate problem；On the other hand, it is exchanged heat by control
The temperature of device test specimen inlet air guarantees that air enters heat exchanger test specimen with steady state, solves air intake state with ring
Border and operating condition change and change the problems such as caused system stability is poor, test result is inaccurate.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention.
In figure: 1-steam generator；2-pressure reducing valves；3-vapor superheaters；4-heat exchanger test specimens；5-condensation water storage boxes；
6-liquid circulation pumps；7-nozzles；8-centrifugal blowers；9-surface air coolers；10-cooling water pumps；11-constant temperature cold water storage cisterns；12- reheater；
13-circulation air paths；14-cowling panels；15-temperature sensors；16-pressure sensors；17-air humidity sensors；18-differential pressures become
Send device；19-fluid flowmeters
Specific embodiment
The present invention is further elaborated and is illustrated with reference to the accompanying drawings and detailed description.Each implementation in the present invention
The technical characteristic of mode can carry out the corresponding combination under the premise of not conflicting with each other.
Referring to Fig.1, a kind of plate-fin heat exchanger of the invention flowing and testing device for heat transferring performance, the device can be divided into
Steam side and air side two parts.
Wherein, steam side includes steam generator 1, pressure reducing valve 2, vapor superheater 3, heat exchanger test specimen 4, condensation water storage
Case 5, liquid circulation pump 6.Steam is generated by heating in steam generator 1, heating power is adjustable.Steam generator 1 goes out
Mouth is connect by first pipe with one end of pressure reducing valve 2, and the other end of pressure reducing valve 2 passes through second pipe and vapor superheater 3
Interior steam pressure is managed in the effect adjustment of import connection, pressure reducing valve 2, it is therefore desirable to select the adjustable model of aperture.Second pipe
Be equipped with the first temperature test point T1 and first pressure test point P1, for real-time measurement second pipe position vapor (steam) temperature with
And steam pressure.The outlet of vapor superheater 3 is connect by third pipeline with the import of heat exchanger test specimen 4, is overheated by steam
Treated for device 3 integrally into heat exchanger test specimen 4 for carrying out heat transfer property test.Third pipeline is tested equipped with second temperature
Point T2 and second pressure test point P2 can calculate the steam degree of superheat by the real-time measuring data of the two, and for passing through feedback
The operation for controlling vapor superheater 3, makes the steam degree of superheat maintain target value.Vapor superheater 3 should select heating power can
The model of adjustment.Superheated steam is exchanged heat in heat exchanger test specimen 4 after cooling, will form condensate, therefore heat exchanger test specimen 4
Outlet by the 4th pipeline connect condensation water storage box 5, condensation water is stored in wherein.4th pipeline is equipped with fluid flow
Meter 19, third temperature test point T3 and third pressure testing point P3, the condensation liquid stream being respectively used in real-time measurement third pipeline
Amount, vapor (steam) temperature and steam pressure.The bottom of condensation water storage box 5 is equipped with outlet, and is occurred by liquid circulation pump 6 and steam
The connection of device water inlet, enables condensation water to form steam by reuse again.Liquid circulation pump 6 should select frequency conversion liquid circulation
Pump, circular flow is adjustable.
In addition, air side includes nozzle 7, centrifugal blower 8, surface air cooler 9, cooling water pump 10, constant temperature cold water storage cistern 11, reheater
12, circulation air path 13 and cowling panel 14.Heat exchanger test specimen 4 to be tested is arranged in circulation air path 13, in circulation air path 13 from
Heat exchanger test specimen 4 rises is successively arranged nozzle 7, centrifugal blower 8, surface air cooler 9, reheater 12 and cowling panel 14 along clockwise direction.
Pipeline section between cowling panel 14 and heat exchanger test specimen 4 should keep as far as possible it is straight uniformly, avoid that there are flow-disturbings.Centrifugal blower 8 is answered
When selecting frequency conversion fan, air output is adjustable.Wherein nozzle 7 and cowling panel 14 need respectively to cover some air duct section, i.e.,
Air in air duct is required to pass fully through nozzle 7 and 14 rear of cowling panel can enter downstream area, allows air to quasi-
Really metering and rectification.It is equipped with the second humidity measurement point H2 in air duct between heat exchanger test specimen 4 and nozzle 7 and the 5th temperature is surveyed
Pilot T5, for air humidity and air themperature progress real-time measurement herein.In addition, the second pressure difference test point DP2 is arranged
In the upstream and downstream of air duct inner nozzle 7, the second pressure difference test point DP2 can combine to form nozzle flow measuring device with nozzle 7, right
Air mass flow in air duct measures.Calibrating nozzle can be used in nozzle 7, and multiple nozzles are preferably combined on same section.Table
The water outlet of cooler 9 connects the water inlet of constant temperature cold water storage cistern 11, and it is cold that the water outlet of constant temperature cold water storage cistern 11 by cooling water pump 10 connects table
Thus the water inlet of device 9 constitutes the circulating chilled water circuit driven by cooling water pump 10.Between cowling panel 14 and heat exchanger test specimen 4
Air duct in be equipped with the first humidity measurement point H1 and the 4th temperature test point T4, for air humidity and air themperature herein
Carry out real-time measurement.The upstream and downstream of heat exchanger test specimen 4 in air duct is arranged in first pressure difference test point DP1, for measuring heat exchanger
Pressure difference in the air duct of 4 two sides of test specimen.
In this test device, before and after the steam side of heat exchanger test specimen and air side, it is provided with different test points,
Thus, it is possible to the states at real-time monitoring different measuring points, then adjust operational process according to parameter feedback.In the present invention, adjustable
Whole operating parameter includes the steam degree of superheat of 4 entrance of heat exchanger test specimen, the steam degree of supercooling of the outlet of heat exchanger test specimen 4, enters
Air themperature and humidity of heat exchanger test specimen 4 etc..The adjustment can be by manually being operated, but is considered easy to control and quasi-
True property, it is preferred to use automatic control equipment carries out closed-loop control.
Therefore in the preferred implementation of the present embodiment, self-con-tained unit is additionally provided in device, for according to each test point
Sensing data closed-loop control is carried out to the operating parameter of test device.In addition, the first temperature test point T1, second temperature are surveyed
At pilot T2, third temperature test point T3, the 4th temperature test point T4 and the 5th temperature test point T5, it is separately installed with for surveying
Measure the temperature sensor 15 of temperature at pilot.First pressure test point P1, second pressure test point P2 and third pressure test
At point P3, it is separately installed with the pressure sensor 16 for measuring pressure at test point.First humidity measurement point H1 and second is wet
It spends at test point H2, is separately installed with the air humidity sensor 17 for measuring humidity at test point.First pressure difference test point
At DP1 and the second pressure difference test point DP2, it is separately installed with the differential pressure transmitter 18 for measuring pressure difference at test point.Each test
Sensor at point is connected in automatic control equipment, corresponding combustion adjustment operating condition equipment (such as steam generator 1, pressure reducing valve
2, vapor superheater 3, centrifugal blower 8, cooling water pump 10, reheater 12 etc.) it is also connected in automatic control equipment, thus constitute closed loop
Control.Automatic control equipment can be selected according to actual needs, such as single-chip microcontroller, PLC etc. can be achieved, and specific connection type is not done
It limits.In the present embodiment, in steam side, the second temperature test point T2 and second pressure test point of third pipeline can be passed through
P2 realizes closed-loop control to the steam degree of superheat precise measurement of test specimen entrance, and by the heating power of control vapor superheater 3；
The steam degree of supercooling essence that test specimen can be exported by the third temperature test point T3 and third pressure testing point P3 of the 4th pipeline
Really measurement, and closed-loop control is realized by the heating amount of control steam generator 1.It, can be by controlling reheater in air side
12 heating powers and 10 flow of cooling water pump being connected with surface air cooler 9 are realized to entrance 4 air themperature of heat exchanger test specimen and humidity
Closed-loop control.Certainly, the closed-loop control of different location can be realized by an automatic control equipment, can also be set by multiple automatic controls
It is standby to realize.
A kind of flowing of plate-fin heat exchanger and heat transfer property parameter test method can be provided based on above-mentioned test device, is used
In the flowing of acquisition plate-fin heat exchanger and heat transfer property parameter.In this method, the test according to heat exchanger test specimen 4 to be measured is needed
It is required that predefining corresponding operating parameter, such as target steam pressure, the target steam degree of superheat, target steam degree of supercooling, mesh
Mark steam condensation number, target air flow, the target air temperature for passing in and out heat exchanger test specimen and humidity etc..Then by following step
Suddenly it is tested:
The method of operation in test device is as follows:
In steam side, saturated vapor is generated in steam generator 1, steam mistake is inputted by second pipe after pressure reducing valve 2
Hot device 3 is simultaneously heated to be overheat dry flue gas；It overheats dry flue gas and passes through third pipeline input heat exchanger test specimen 4, the constant temperature with air side
Constant humidity air exchanges heat, and is condensated into liquid and is stored in condensation water storage box 5.Liquid in condensation water storage box 5, through liquid
Body circulation pump 6, which is delivered to again in steam generator 1, to be recycled.
In air side, the air after 4 heat exchange of heat exchanger test specimen enters circulation air path 13, after nozzle 7, from
Surface air cooler 9 and reheater 12 are passed sequentially through under the driving of heart blower 8, carries out heat and wet treatment, form constant temperature and humidity air.Surface air cooler
Cooling water is provided by constant temperature cold water storage cistern 11 in 9, and is recycled by cooling water pump 10.Last constant temperature and humidity air passes through cowling panel 14
After rectification, heat exchange is carried out into heat exchanger test specimen 4 and steam.
The measuring method of flowing and heat transfer property parameter is as follows:
In steam side, steam pressure is detected by first pressure test point P1, and is closed by the aperture realization of control pressure reducing valve 2
Ring control, enables its steam pressure to stablize in target value；The steam degree of superheat into heat exchanger test specimen 4 is surveyed by second temperature
Pilot T2 and second pressure test point P2 are calculated, and realize closed-loop control by the heating amount of control vapor superheater 3, make
Obtaining its steam degree of superheat can stablize in target value；The steam degree of supercooling that heat exchanger test specimen 4 exports is by third temperature test point T3
It is calculated with third pressure testing point P3, and closed-loop control is realized by the heating power of control steam generator 1, so that its
Steam degree of supercooling can be stablized in target value；Steam condensation number is tested by the first flow for being mounted on 4 exit of heat exchanger test specimen
Point F1 detection.
In air side, the air pressure difference for flowing through heat exchanger test specimen 4 is detected by the first pressure difference test point DP1；Circulation air path 13
Interior air mass flow is obtained by the second pressure difference test point DP2 measurement 7 front and back pressure difference of nozzle, and passes through the revolving speed of control centrifugal blower 8
It realizes closed-loop control, its air mass flow is stablized in target value；Into the air themperature and humidity point of heat exchanger test specimen 4
It is not detected by the 4th temperature test point T4 and the first humidity measurement point H1, the heating that wherein air themperature passes through control reheater 12
Amount realizes closed-loop control, its intake air temperature and humidity are stablized in target value；Out the air themperature of heat exchanger test specimen 4 and
Humidity is detected by the 5th temperature test point T5 and the second humidity measurement point H2 respectively.
After obtaining above-mentioned flowing and heat transfer property parameter, it can be used to analyze the flowing and biography of heat exchanger test specimen as needed
Hot property, specific analysis method can be determine according to actual needs.Specifically since the present invention is in traditional plate-fin heat exchanger
On the basis of flowing and heat transfer property test, the overheat (cold) that heat exchanging device test specimen 4 enters mouth steam (out) is increased in steam side
The control of degree, therefore guarantee superheated vapor total condensation in heat exchanger test specimen 4；Heat exchanging device test specimen 4 is increased in air side
The control of entering air temperature so that into heat exchanger test specimen 4 be Tempeerature-constant air.It ensure that air intake state with environment and fortune
The variation of row operating condition still keeps stablizing, and improves the accuracy of test result.
Above-mentioned embodiment is only a preferred solution of the present invention, so it is not intended to limiting the invention.Have
The those of ordinary skill for closing technical field can also make various changes without departing from the spirit and scope of the present invention
Change and modification.Therefore all mode technical solutions obtained for taking equivalent substitution or equivalent transformation, all fall within guarantor of the invention
It protects in range.
Claims (10)
1. a kind of plate-fin heat exchanger flowing and testing device for heat transferring performance, including steam side and air side, it is characterised in that: institute
The steam side stated includes steam generator (1), pressure reducing valve (2), vapor superheater (3), heat exchanger test specimen (4), condensation water storage
Case (5), liquid circulation pump (6)；The outlet of the steam generator (1) is connected by one end of first pipe and pressure reducing valve (2)
It connects, the other end of pressure reducing valve (2) is connect by second pipe with the import of vapor superheater (3), is set on the second pipe
There are the first temperature test point (T1) and first pressure test point (P1), the outlet of vapor superheater (3) passes through third pipeline and changes
The import of hot device test specimen (4) connects, and the third pipeline is equipped with second temperature test point (T2) and second pressure test point
(P2)；The outlet of heat exchanger test specimen (4) is equipped with liquid flow by the 4th pipeline connection condensation water storage box (5), the 4th pipeline
Meter (19), third temperature test point (T3) and third pressure testing point (P3)；The bottom of condensation water storage box (5) is equipped with
Mouthful, and connect by liquid circulation pump (6) with steam generator water inlet；
The air side includes nozzle (7), centrifugal blower (8), surface air cooler (9), cooling water pump (10), constant temperature cold water storage cistern
(11), reheater (12), circulation air path (13), cowling panel (14)；The heat exchanger test specimen (4) is arranged in circulation air path (13)
In, nozzle (7), centrifugal blower (8), table are successively arranged along clockwise direction from heat exchanger test specimen (4) in circulation air path (13)
Cooler (9), reheater (12) and cowling panel (14)；It is wet that second is equipped in air duct between heat exchanger test specimen (4) and nozzle (7)
Spend test point (H2) and the 5th temperature test point (T5)；Second pressure difference test point (DP2) is set to the upper and lower of air duct inner nozzle (7)
Trip, for being measured jointly to the air mass flow in air duct after being combined with nozzle (7)；The water outlet of the surface air cooler (9)
The water inlet of constant temperature cold water storage cistern (11) is connect, the water outlet of constant temperature cold water storage cistern (11) connects surface air cooler (9) by cooling water pump (10)
Water inlet constitutes circulating chilled water circuit；It is wet that first is equipped in air duct between the cowling panel (14) and heat exchanger test specimen (4)
Spend test point (H1) and the 4th temperature test point (T4)；Heat exchanger test specimen (4) are arranged in air duct in first pressure difference test point (DP1)
Upstream and downstream, pressure difference in the air duct for measuring heat exchanger test specimen (4) two sides.
2. plate-fin heat exchanger as described in claim 1 flowing and testing device for heat transferring performance, it is characterised in that: described the
Temperature test point (T1), second temperature test point (T2), third temperature test point (T3), the 4th temperature test point (T4) and
At 5 temperature test points (T5), it is separately installed with the temperature sensor (15) for measuring temperature at test point.
3. plate-fin heat exchanger as described in claim 1 flowing and testing device for heat transferring performance, it is characterised in that: described the
At one pressure testing point (P1), second pressure test point (P2) and third pressure testing point (P3), it is separately installed with for measuring
The pressure sensor (16) of pressure at test point.
4. plate-fin heat exchanger as described in claim 1 flowing and testing device for heat transferring performance, it is characterised in that: described the
At 1 humidity measurement point (H1) and the second humidity measurement point (H2), the air being separately installed with for measuring humidity at test point is wet
It spends sensor (17).
5. plate-fin heat exchanger as described in claim 1 flowing and testing device for heat transferring performance, it is characterised in that: described the
At one pressure difference test point (DP1) and the second pressure difference test point (DP2), it is separately installed with the differential pressure for measuring pressure difference at test point
Transmitter (18).
6. plate-fin heat exchanger flowing as described in claim 1 and testing device for heat transferring performance, it is characterised in that: further include certainly
Device is controlled, for carrying out closed-loop control to the operating parameter of test device according to the sensing data of each test point.
7. plate-fin heat exchanger flowing as claimed in claim 6 and testing device for heat transferring performance, it is characterised in that: the fortune
Row parameter includes the steam degree of superheat of heat exchanger test specimen (4) entrance, the steam degree of supercooling of heat exchanger test specimen (4) outlet, into changing
The air themperature and humidity of hot device test specimen (4).
8. a kind of plate-fin heat exchanger using test device as described in claim 1 flows and heat transfer property test method,
It is characterized in that, steps are as follows:
In steam side, saturated vapor is generated in steam generator (1), and steam mistake is inputted by second pipe after pressure reducing valve (2)
Hot device (3) is simultaneously heated to be overheat dry flue gas；Dry flue gas is overheated by third pipeline input heat exchanger test specimen (4), with air side
Constant temperature and humidity air exchanges heat, and is condensated into liquid and is stored in condensation water storage box (5)；
In air side, the air after heat exchanger test specimen (4) heat exchange enters circulation air path (13), after nozzle (7),
Surface air cooler (9) and reheater (12) are passed sequentially through under the driving of centrifugal blower (8), carries out heat and wet treatment, and it is empty to form constant temperature and humidity
Gas；Last constant temperature and humidity air carries out heat exchange after cowling panel (14) rectification, into heat exchanger test specimen (4) and steam；
In steam side, steam pressure is detected by first pressure test point (P1), and the aperture by controlling pressure reducing valve (2) realizes closed loop
Control；The steam degree of superheat into heat exchanger test specimen (4) is counted by second temperature test point (T2) and second pressure test point (P2)
It obtains, and closed-loop control is realized by the heating amount of control vapor superheater (3)；The steam mistake of heat exchanger test specimen (4) outlet
Cold degree is calculated by third temperature test point (T3) and third pressure testing point (P3), and passes through control steam generator (1)
Heating power realize closed-loop control；Steam condensation number is by being mounted on the first flow test point in heat exchanger test specimen (4) exit
(F1) it detects；
In air side, the air pressure difference for flowing through heat exchanger test specimen (4) is detected by the first pressure difference test point (DP1)；Circulation air path
(13) interior air mass flow is obtained by pressure difference before and after the second pressure difference test point (DP2) measurement nozzle (7), and passes through control centrifugal blower
(8) revolving speed realizes closed-loop control；Into heat exchanger test specimen (4) air themperature and humidity respectively by the 4th temperature test point
(T4) and the first humidity measurement point (H1) detection, the heating amount that wherein air themperature passes through control reheater (12) realize closed loop control
System；The air themperature and humidity of heat exchanger test specimen (4) are respectively by the 5th temperature test point (T5) and the second humidity measurement point out
(H2) it detects.
9. plate-fin heat exchanger flowing as described in claim 1 and heat transfer property test method, it is characterised in that: the table
Cooler (9) interior cooling water is provided by constant temperature cold water storage cistern (11), and is recycled by cooling water pump (10).
10. plate-fin heat exchanger flowing as described in claim 1 and heat transfer property test method, it is characterised in that: described
Liquid in condensation water storage box (5) is delivered in steam generator (1) again through liquid circulation pump (6) and is recycled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277421.1A CN109975050A (en) | 2019-04-08 | 2019-04-08 | A kind of flowing of plate-fin heat exchanger and testing device for heat transferring performance and its method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277421.1A CN109975050A (en) | 2019-04-08 | 2019-04-08 | A kind of flowing of plate-fin heat exchanger and testing device for heat transferring performance and its method |
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| CN109975050A true CN109975050A (en) | 2019-07-05 |
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| CN201910277421.1A Pending CN109975050A (en) | 2019-04-08 | 2019-04-08 | A kind of flowing of plate-fin heat exchanger and testing device for heat transferring performance and its method |
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| CN112432799A (en) * | 2020-11-05 | 2021-03-02 | 青岛大学 | Desktop type empty heat pipe heat exchanger capability test device |
| CN112880441A (en) * | 2021-01-27 | 2021-06-01 | 杭州中泰深冷技术股份有限公司 | Two-phase flow state testing device of plate-fin heat exchanger and reconstruction method thereof |
| CN114201826A (en) * | 2021-11-22 | 2022-03-18 | 杭州中泰深冷技术股份有限公司 | Fin machining quality detection method based on fin resistance characteristic inversion |
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