CN107290380A - Plate type heat exchanger heat transfer property transient test device and method - Google Patents
Plate type heat exchanger heat transfer property transient test device and method Download PDFInfo
- Publication number
- CN107290380A CN107290380A CN201710448098.0A CN201710448098A CN107290380A CN 107290380 A CN107290380 A CN 107290380A CN 201710448098 A CN201710448098 A CN 201710448098A CN 107290380 A CN107290380 A CN 107290380A
- Authority
- CN
- China
- Prior art keywords
- section
- heat transfer
- heat exchanger
- plate type
- group
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Abstract
The invention discloses a kind of plate type heat exchanger heat transfer property transient test device and method, including entrance, contraction section, bringing-up section, stable section, experimental section, discharge section and data collecting system, wherein, entrance, contraction section, bringing-up section, stable section, experimental section and discharge section are sequentially connected logical, heater is provided with bringing-up section, the exit of stable section is provided with first group of temperature sensor, plate type heat exchanger to be measured is located in experimental section, the porch for discharging section is provided with pressure sensor and second group of temperature sensor, the middle part for discharging section is provided with flowmeter, the outlet of discharge section has blower fan, the input and pressure sensor of data collecting system, flowmeter, the output end of first group of temperature sensor and second group of temperature sensor is connected, the device and method can accurately measure the heat transfer coefficient of plate type heat exchanger.
Description
Technical field
The present invention relates to a kind of heat transfer property transient test device and method, and in particular to a kind of plate type heat exchanger conductivity of heat
Can transient test device and method.
Background technology
Plate type heat exchanger is assembled by the metal thin plate superposition by compacting, with heat transfer coefficient height, heat exchange efficiency
High, floor space is small, medium heat exchange, logarithmic mean temperature difference (LMTD) is big, out temperature end difference is small, it is easy to use excellent to safeguard
Point, is widely applied in a variety of industrial circles such as food, medicine, chemistry, electric power, refrigeration, air-conditioning, metallurgy, machinery, such as ox
Milk sterilizing, synthesis ammonia, process for making cooling, power cycle heat recovery process etc..
The heat transfer coefficient size of plate type heat exchanger intuitively reflects the quality of its heat transfer property, is that an important performance refers to
Mark.It is the basic skills for weighing its heat transfer property accurately to measure board-like heat transfer coefficient of heat exchanger, is to carry out associated heat transfer theory to grind
Study carefully and technology exploitation prerequisite, be also examine and optimization design, improve plate type heat exchanger performance level important hand
Section.
At present, the main method of heat transfer coefficient is Steady Experimental technology between measurement heat exchanger plate and working medium.The technology with
Newton's law of cooling is theoretical foundation, it using stablizing thermal source continuous heating heat transferring plate surface, by measure steady state heat transfer amount,
Working medium flow, Temperature of Working and plate temperature carry out Numerical heat transfer coefficient magnitude.Because the plate of plate type heat exchanger is brought into close contact, plate
The flowing space between piece is narrow and small and complex-shaped, and sheet is very thin in addition, buries temperature probe to obtain plate wall temperature, draws
The difficulty of the devices such as line is very big, and set wall temperature measurement equipment can heat exchanging device interior flow field, temperature field generation interference
And influence, cause heat transfer coefficient test deviation occur, reduce experimental precision.
The content of the invention
It is an object of the invention to the shortcoming for overcoming above-mentioned prior art, there is provided a kind of plate type heat exchanger heat transfer property wink
State test device and method, the device and method can accurately measure the heat transfer coefficient of plate type heat exchanger.
To reach above-mentioned purpose, plate type heat exchanger heat transfer property transient test device of the present invention include entrance,
Contraction section, bringing-up section, stable section, experimental section, discharge section and data collecting system, wherein, it is entrance, contraction section, bringing-up section, steady
Determine section, experimental section and discharge section and be sequentially connected logical, heater is provided with bringing-up section, the exit of stable section is provided with first group of temperature
Sensor, plate type heat exchanger to be measured is located in experimental section, and the porch of discharge section is passed provided with pressure sensor and second group of temperature
Sensor, the middle part of discharge section is provided with flowmeter, and the outlet of discharge section has blower fan, the input and pressure of data collecting system
Sensor, flowmeter, the output end of each temperature sensor are connected.
If being sequentially provided with honeycomb and dried layer silk screen along the direction that working medium circulates in entrance.
The shrinkage ratio of contraction section is 2~25.
The length of stable section and the ratio of diameter are 0.5~10.
First group of temperature sensor is distributed in network structure；
Second group of temperature sensor is distributed in network structure.
Regulating valve is provided with discharge section, regulating valve is located between flowmeter and the outlet for discharging section.
Plate type heat exchanger heat transfer property transient unbalanced response of the present invention comprises the following steps：
1) blower fan is opened, blower fan guiding working medium flows through entrance, contraction section, bringing-up section, stable section, experimental section, row successively
Go out section and blower fan；
2) flow is set, when the detection of flowmeter, first group of temperature sensor, second group of temperature sensor and pressure sensor
During obtained data stabilization, data collecting system gathers the Temperature of Working at experimental section import by first group of temperature sensor
Tin, the Temperature of Working T that data collecting system passes through second group of temperature sensor collection experimental section exitout, data collecting system
The working medium flow for flowing through discharge section is gathered by flowmeter, data collecting system gathers experimental section exit by pressure sensor
Power pressure；
3) conservation of energy analysis is carried out to experimental section, to be measured board-like change is set up according to Newton's law of cooling and Fourier law
Heat transfer differential equation in hot device between plate and working medium, generation is turned to by heat transfer differential equation is discrete using control volume integral method
Number equation, sets experimental section mean heat transfer coefficient h initial value as h0, by h0, Temperature of Working T at experimental section importin, discharge section
Working medium flow and the power pressure in experimental section exit substitute into above-mentioned algebraic equation and solve equation, obtain experimental section exit
Temperature of Working calculated value Tout *, adjust h value iterative solution algebraic equations and update Tout *, until calculated value Tout *Surveyed with temperature
Value ToutBetween deviation meet computational accuracy requirement untill, final h values are experimental section average heat transfer system under setting flow
Number measurement result；
4) by the flow of blower fan regulation experiment section working medium, step 2 is then repeated) and step 3), complete different flow
The heat transfer property transient test of plate type heat exchanger in lower experimental section.
The invention has the advantages that：
Plate type heat exchanger heat transfer property transient test device and method of the present invention is in concrete operations, and working medium is in wind
Successively through entrance, contraction section, bringing-up section, stable section, experimental section and discharge section discharge under the guiding of machine, wherein, pass through heating
Heater in section is heated to working medium, by the Temperature of Working of first group of temperature sensor measurement experimental section porch, is led to
The power pressure in over-pressed force snesor measurement experiment section exit, passes through second group of temperature sensor measurement experimental section exit
Temperature of Working, the flow of working medium in discharge section is measured by flowmeter, then according to Newton's law of cooling and Fourier law pair
Experimental section carries out conservation of energy analysis, sets up and solves heat transfer equation, obtains the Temperature of Working calculated value in experimental section exit
Tout *, according to calculated value Tout *With measured value ToutBetween deviation adjusting experimental section mean heat transfer coefficient h, iterative solution heat transfer
Equation simultaneously updates Tout *, until Tout *With ToutBetween deviation meet computational accuracy requirement untill, the h values now obtained as pair
Answer the measurement result of experimental section mean heat transfer coefficient under flow.Compared with existing steady state test technology, the present invention is without measurement
The plate wall temperature of plate type heat exchanger can complete transient test, and the narrow and small, labyrinth inside plate type heat exchanger can be avoided empty
In arrangement wall temperature measurement equipment problem, while wall temperature measurement equipment heat exchanging device interior flow field, temperature field can be eliminated
Interference and influence, so as to effectively improve the precision of measurement；In addition, the transient test cycle of the present invention is short, run time is short, fortune
Row cost is low；Finally, experimental system of the invention is simple, and equipment investment is small.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 in the present invention in experimental section 8 corrugated plate-type heat exchangers structural representation；
Fig. 3 is the conservation of energy analysis schematic diagram in corrugated plate-type heat exchangers in the present invention；
Fig. 4 is test result figure of the invention.
Wherein, 1 it is entrance, 2 be honeycomb, 3 be silk screen, 4 be contraction section, 5 be bringing-up section, 6 is that stable section, 7a are
One group of temperature sensor, 7b are second group of temperature sensor, 8 are experimental section, 9 are pressure sensor, 10 are discharge section, 11 are stream
Gauge, 12 be regulating valve, 13 be blower fan.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
With reference to Fig. 1, plate type heat exchanger heat transfer property transient test device of the present invention includes entrance 1, contraction section
4th, bringing-up section 5, stable section 6, experimental section 8, discharge section 10 and data collecting system 14, wherein, entrance 1, contraction section 4, heating
Section 5, stable section 6, experimental section 8 and discharge section 10 are sequentially connected logical, heater are provided with bringing-up section 5, the exit of stable section 6 is set
There is first group of temperature sensor 7a, plate type heat exchanger to be measured is located in experimental section 8, the porch of discharge section 10 is provided with pressure sensing
Device 9 and second group of temperature sensor 7b, the middle part of discharge section 10 are provided with flowmeter 11, and the outlet of discharge section 10 has blower fan
13, input and pressure sensor 9, flowmeter 11, first group of temperature sensor 7a, the second group of temperature of data collecting system 14
Sensor 7b output end is connected.
If being sequentially provided with honeycomb 2 and dried layer silk screen 3 along the direction that working medium circulates in entrance 1；The shrinkage ratio of contraction section 4
For 2~25；The length of stable section 6 and the ratio of diameter are 0.5~10；First group of temperature sensor 7a is distributed in network structure；
Second group of temperature sensor 7b is distributed in network structure；Regulating valve 12 is provided with discharge section 10, regulating valve 12 is located at flowmeter
Between 11 and the outlet of discharge section 10.
Plate type heat exchanger heat transfer property transient unbalanced response of the present invention comprises the following steps：
1) blower fan 13 is opened, the guiding of blower fan 13 working medium flows through entrance 1, contraction section 4, bringing-up section 5, stable section 6, reality successively
Test section 8, discharge section 10 and blower fan 13；
2) flow is set, when flowmeter 11, first group of temperature sensor 7a, second group of temperature sensor 7b and pressure sensing
When device 9 detects obtained data stabilization, data collecting system 14 is gathered at the import of experimental section 8 by first group of temperature sensor 7a
Temperature of Working Tin, the Temperature of Working that data collecting system 14 passes through second group of temperature sensor 7b collection experimental sections 8 exit
Tout, data collecting system 14 is gathered by flowmeter 11 flows through the working medium flow for discharging section 10, and data collecting system 14 passes through pressure
The power pressure in the collection experimental section 8 of force snesor 9 exit；
3) conservation of energy analysis is carried out to experimental section, to be measured board-like change is set up according to Newton's law of cooling and Fourier law
Heat transfer differential equation in hot device between plate and working medium, generation is turned to by heat transfer differential equation is discrete using control volume integral method
Number equation, sets the mean heat transfer coefficient h of experimental section 8 initial value as h0, by h0, Temperature of Working T at the import of experimental section 8in, discharge
The working medium flow of section 10 and the power pressure in the exit of experimental section 8 substitute into above-mentioned algebraic equation and solve equation, obtain experimental section 8
The Temperature of Working calculated value T in exitout *, adjust h value iterative solution algebraic equations and update Tout *, until calculated value Tout *With
Measured temperature ToutBetween deviation meet computational accuracy requirement untill, final h values are that to set experimental section under flow average
Heat transfer coefficient measurement result；
4) by the flow of the regulation experiment of blower fan 13 8 working medium of section, step 2 is then repeated) and step 3), complete not cocurrent flow
The heat transfer property transient test of plate type heat exchanger in the lower experimental section 8 of amount.
Honeycomb 2 is made up of side by side some square thin-walled small pipelines, and the acting as of honeycomb 2 leads straight air-flow, reduction gas
Flow turbulence level, improve Velocity Profiles.Silk screen 3 is 3 layer of 100 mesh stainless steel cloth, and it act as reducing the turbulence level of air-flow
And it is uniformly distributed air-flow.The smooth gradual change in section of the inwall of contraction section 4, contraction section 4 act as accelerate air-flow.Heater is
Fin-tube type electric heater, the general power of heater is 60kW.Stable section 6 be constant section duct, stable section 6 act as decay it is small
Whirlpool, is uniformly distributed air-flow, it is ensured that the quality in the flow field of experimental section 8.
The air reynolds number Re scope that blower fan 13 is provided is 500-10000.The frequency acquisition of data collecting system 14 is
0.5Hz, test period is 60s.
Corrugated plate-type heat exchangers inner length is solid, the analysis of fluid energy conservation in dx micro unit as schemed in the present invention
Shown in 3, the Transient Heat Transfer differential equation is between corrugated plating-air in micro unit：
Wherein, ρ is density；δ is thickness, and c is specific heat capacity, and T is temperature, and t is the time, and k is thermal conductivity factor, and x is length, h
For average convection heat transfer coefficient, u is flow velocity, and subscript s represents solid corrugated plating, and subscript f represents fluid working substance.
The present invention model experiment result as shown in figure 4, as can be seen from Fig. 4 the entering air temperature of experimental section 8 from it is initial when
19 DEG C carved start rapid rising, and 59 DEG C are basically stable at during to 20s.The outlet air temperature of experimental section 8 then from t=0s when 19
DEG C increase to 26 DEG C during t=60s.By iterative, the average convection of ripple sheet heat exchanger is passed when finally trying to achieve Re=4709
Hot coefficient value is h=73.87Wm-2·K-1。
Detailed description above is only presently preferred embodiments of the present invention, it is impossible to limit the scope of the present invention with this.It is i.e. every according to
The equivalent changes and modifications made according to scope of the present invention patent, should all belong within the scope of patent of the present invention covers.
Claims (7)
1. a kind of plate type heat exchanger heat transfer property transient test device, it is characterised in that including entrance (1), contraction section (4),
Bringing-up section (5), stable section (6), experimental section (8), discharge section (10) and data collecting system (14), wherein, entrance (1), receipts
Contracting section (4), bringing-up section (5), stable section (6), experimental section (8) and discharge section (10) be sequentially connected it is logical, in bringing-up section (5) provided with plus
Hot device, the exit of stable section (6) is provided with first group of temperature sensor (7a), and plate type heat exchanger to be measured is located in experimental section (8),
The porch for discharging section (10) is provided with pressure sensor (9) and second group of temperature sensor (7b), discharges and is set in the middle part of section (10)
There is flowmeter (11), the outlet of discharge section (10) has blower fan (13), and input and the pressure of data collecting system (14) are passed
Sensor (9), flowmeter (11), first group of temperature sensor (7a) and the output end of second group of temperature sensor (7b) are connected.
2. plate type heat exchanger heat transfer property transient test device according to claim 1, it is characterised in that entrance (1)
It is interior to be sequentially provided with honeycomb (2) along the direction that working medium circulates and if dried layer silk screen (3).
3. plate type heat exchanger heat transfer property transient test device according to claim 1, it is characterised in that contraction section (4)
Shrinkage ratio be 2~25.
4. plate type heat exchanger heat transfer property transient test device according to claim 1, it is characterised in that stable section (6)
Length and diameter ratio be 0.5~10.
5. plate type heat exchanger heat transfer property transient test device according to claim 1, it is characterised in that
First group of temperature sensor (7a) is distributed in network structure；
Second group of temperature sensor (7b) is distributed in network structure.
6. plate type heat exchanger heat transfer property transient test device according to claim 1, it is characterised in that discharge section (10)
On be provided with regulating valve (12), regulating valve (12) is located between outlet of the flowmeter (11) with discharging section (10).
7. a kind of plate type heat exchanger heat transfer property transient unbalanced response, it is characterised in that changed based on board-like described in claim 1
Hot device heat transfer property transient test device, comprises the following steps：
1) blower fan (13) is opened, blower fan (13) guiding working medium flows through entrance (1), contraction section (4), bringing-up section (5), stably successively
Section (6), experimental section (8), discharge section (10) and blower fan (13)；
2) flow is set, when flowmeter (11), first group of temperature sensor (7a), second group of temperature sensor (7b) and pressure are passed
During the data stabilization that sensor (9) detection is obtained, data collecting system (14) is tested by first group of temperature sensor (7a) collection
Temperature of Working T at section (8) importin, data collecting system (14) passes through second group of temperature sensor (7b) and gathers experimental section (8)
The Temperature of Working T in exitout, data collecting system (14) is gathered by flowmeter (11) flows through the working medium stream for discharging section (10)
Amount, data collecting system (14) gathers the power pressure in experimental section (8) exit by pressure sensor (9)；
3) conservation of energy analysis is carried out to experimental section, plate type heat exchanger to be measured is set up according to Newton's law of cooling and Fourier law
Heat transfer differential equation between interior plate and working medium, algebraically side is turned to by heat transfer differential equation is discrete using control volume integral method
Journey, sets experimental section (8) mean heat transfer coefficient h initial value as h0, by h0, Temperature of Working T at experimental section (8) importin, discharge
The working medium flow of section (10) and the power pressure in experimental section (8) exit substitute into above-mentioned algebraic equation and solve equation, obtain reality
Test the Temperature of Working calculated value T in section (8) exitout *, adjust h value iterative solution algebraic equations and update Tout *, until calculated value
Tout *With measured temperature ToutBetween deviation meet computational accuracy requirement untill, final h values are to set experiment under flow
Section mean heat transfer coefficient measurement result；
4) by the flow of blower fan (13) regulation experiment section (8) working medium, step 2 is then repeated) and step 3), complete not cocurrent flow
The heat transfer property transient test of plate type heat exchanger in the lower experimental section (8) of amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448098.0A CN107290380A (en) | 2017-06-14 | 2017-06-14 | Plate type heat exchanger heat transfer property transient test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448098.0A CN107290380A (en) | 2017-06-14 | 2017-06-14 | Plate type heat exchanger heat transfer property transient test device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107290380A true CN107290380A (en) | 2017-10-24 |
Family
ID=60097518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710448098.0A Pending CN107290380A (en) | 2017-06-14 | 2017-06-14 | Plate type heat exchanger heat transfer property transient test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107290380A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108279257A (en) * | 2018-02-28 | 2018-07-13 | 苏州科技大学 | Measure the device and method of forced convection heating rod cluster nusselt number |
| CN108828004A (en) * | 2018-06-15 | 2018-11-16 | 上海卫星工程研究所 | The synthesis thermal conductivity measurement method of complex heat transfer path product |
| CN109827792A (en) * | 2019-02-14 | 2019-05-31 | 江苏科技大学 | The dry and wet refrigeration and heating condition lower surface cooler performance experimental rig of open type |
| CN111830083A (en) * | 2020-08-11 | 2020-10-27 | 沈阳航空航天大学 | System and method for measuring heat exchange coefficient of blade in high-temperature environment |
| CN112619716A (en) * | 2020-11-25 | 2021-04-09 | 武汉宏图真志科技发展有限公司 | Multifunctional laboratory test box |
| CN113063815A (en) * | 2021-03-19 | 2021-07-02 | 西安交通大学 | Gas heat exchange experimental device based on direct current resistance heating |
| CN113406138A (en) * | 2021-05-10 | 2021-09-17 | 扬州大学 | Fluid heat conductivity coefficient measuring device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592330A (en) * | 2013-08-12 | 2014-02-19 | 中国东方电气集团有限公司 | Flow mixing device for air duct system |
| CN104297288A (en) * | 2014-10-27 | 2015-01-21 | 浙江大学 | Simple and efficient single-blowing transient convection experiment table and experimental method thereof |
-
2017
- 2017-06-14 CN CN201710448098.0A patent/CN107290380A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592330A (en) * | 2013-08-12 | 2014-02-19 | 中国东方电气集团有限公司 | Flow mixing device for air duct system |
| CN104297288A (en) * | 2014-10-27 | 2015-01-21 | 浙江大学 | Simple and efficient single-blowing transient convection experiment table and experimental method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 黄风良 等: ""一种测试蓄热型波纹板流动传热特性的实验方法"", 《热科学与技术》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108279257A (en) * | 2018-02-28 | 2018-07-13 | 苏州科技大学 | Measure the device and method of forced convection heating rod cluster nusselt number |
| CN108279257B (en) * | 2018-02-28 | 2023-11-21 | 苏州科技大学 | Device and method for measuring forced convection heating rod cluster noose number |
| CN108828004A (en) * | 2018-06-15 | 2018-11-16 | 上海卫星工程研究所 | The synthesis thermal conductivity measurement method of complex heat transfer path product |
| CN109827792A (en) * | 2019-02-14 | 2019-05-31 | 江苏科技大学 | The dry and wet refrigeration and heating condition lower surface cooler performance experimental rig of open type |
| CN111830083A (en) * | 2020-08-11 | 2020-10-27 | 沈阳航空航天大学 | System and method for measuring heat exchange coefficient of blade in high-temperature environment |
| CN111830083B (en) * | 2020-08-11 | 2023-04-07 | 沈阳航空航天大学 | System and method for measuring heat exchange coefficient of blade in high-temperature environment |
| CN112619716A (en) * | 2020-11-25 | 2021-04-09 | 武汉宏图真志科技发展有限公司 | Multifunctional laboratory test box |
| CN113063815A (en) * | 2021-03-19 | 2021-07-02 | 西安交通大学 | Gas heat exchange experimental device based on direct current resistance heating |
| CN113063815B (en) * | 2021-03-19 | 2022-07-22 | 西安交通大学 | Gas heat exchange experimental device based on direct current resistance heating |
| CN113406138A (en) * | 2021-05-10 | 2021-09-17 | 扬州大学 | Fluid heat conductivity coefficient measuring device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107290380A (en) | Plate type heat exchanger heat transfer property transient test device and method | |
| Tandiroglu | Effect of flow geometry parameters on transient heat transfer for turbulent flow in a circular tube with baffle inserts | |
| Gao et al. | A novel low-resistance tee of ventilation and air conditioning duct based on energy dissipation control | |
| Zhang et al. | Convective heat transfer in cross-corrugated triangular ducts under uniform heat flux boundary conditions | |
| CN105067661B (en) | Gas liquid exchanger heat transfer coefficient determining device | |
| Li et al. | Conjugate heat and mass transfer in a total heat exchanger with cross-corrugated triangular ducts and one-step made asymmetric membranes | |
| CN103592142A (en) | System for testing heat transfer and resistance characteristics of large-size generating equipment heat exchanger | |
| CN104777008B (en) | A kind of power-plant flue gas afterheat utilizing system performance simulation experimental apparatus for testing | |
| Huang et al. | Fluid flow and heat transfer across an elliptical hollow fiber membrane tube bank for air humidification | |
| O’Brien et al. | Local heat transfer and pressure drop for finned-tube heat exchangers using oval tubes and vortex generators | |
| CN104483349B (en) | System and method for measuring heat exchange characteristics of tube bundle | |
| CN103884220B (en) | Be applicable to the oval fin with circular hole of fin tube type refrigerated heat exchanger under frozen condition | |
| CN107632042A (en) | The single-phase local heat transfer test platform of shell-and-tube heat exchanger and method of testing | |
| CN104748995B (en) | The simulation testing device of system reliability control characteristic is utilized for smoke discharging residual heat | |
| CN206601351U (en) | A kind of finned tube heat exchange performance testing system | |
| Hoffmann-Vocke et al. | The effect of inlet conditions on the air side hydraulic resistance and flow maldistribution in industrial air heaters | |
| CN109682714B (en) | Pile body resistance measuring device and resistance coefficient obtaining method | |
| Zhang et al. | Air-side heat transfer characteristics under wet conditions at lower ambient pressure of fin-and-tube heat exchanger | |
| CN106370693B (en) | A kind of turbulent closure scheme convective heat transfer experimental provision | |
| CN105160116B (en) | The uniform Optimization Design of heat exchanger liquid separation | |
| CN106066937B (en) | It is a kind of using heat-conduction oil heat as the forming machine hot blast temperature evaluation method of heat source | |
| Tzempelikos et al. | Design, construction and evaluation of a new laboratory convective dryer using CFD | |
| CN204807492U (en) | Solution -air heat exchanger coefficient of heat transfer surveys device | |
| Baymetova et al. | Optimization of the developed outer surface of an industrial oil cooler | |
| CN108279257A (en) | Measure the device and method of forced convection heating rod cluster nusselt number |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171024 |