CN101324907B - Method for testing air-cooled type heat exchanger performance - Google Patents
Method for testing air-cooled type heat exchanger performance Download PDFInfo
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- CN101324907B CN101324907B CN200710070755A CN200710070755A CN101324907B CN 101324907 B CN101324907 B CN 101324907B CN 200710070755 A CN200710070755 A CN 200710070755A CN 200710070755 A CN200710070755 A CN 200710070755A CN 101324907 B CN101324907 B CN 101324907B
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Abstract
The invention discloses a method for establishing a performance database suitable for an air-cooled type heat exchanger. The method comprises two steps: (1) analyzing factors of the air-cooled type heat exchanger, such as the height of wave-shaped irradiating strips, the cross-section shape of the irradiating strips, the teeth space, the wave height of the irradiating strips, the form of turbulentsheets, the fin height of the turbulent sheets, the teeth space of the turbulent sheets, etc., and screening for minimal times through the DOE method so as to determine the optimum combined core bodystructure of the irradiating strips and the turbulent sheets; and (2) conducting wind tunnel testing for heat exchangers with core bodies of different sizes by aiming at the optimum structure, and building the performance database. With the method, fewer test parameters and fewer heat exchangers can be utilized to build the comparatively complete performance database, thereby accurately predicting the heat exchange performance and the resistance properties of the heat exchangers with core bodies of different sizes and with the same structure. The method has the advantages of short period required for establishing the database, low investment, high precision of prediction and low cost for development.
Description
Technical field
The present invention relates to a kind of method of testing that is suitable for the air-cooled type heat exchanger performance.It can be widely used on the heat exchanger of air-cooled form, and such heat exchanger comprises charge air cooler, water radiator, oil cooler, air-conditioning condenser etc.Its version mainly is corrugated tube type and strip of paper used for sealing formula, and material can be aluminium alloy, aldary and stainless steel.
Background technology
Aspect the air-cooled type heat exchanger performance prediction, there are diverse ways in different manufacturers, main engine plants, car load factory and research institution, except the general CFD software for calculation that can buy as FLUENT, ANSYS etc., a lot of strong international major companies all have oneself comparatively perfect database.Usually, be directed to certain heat exchanger and will set up perfect database, all need accumulation, could obtain by a large amount of tests through the several years.Thereby how at short notice, by optimality analysis with carry out a small amount of specific aim and test and carry out performance prediction effectively, just become to comprise the target that numerous heat exchanger factory is explored.
Summary of the invention
What the present invention will solve is that prior art exists the problems referred to above, is intended to provide a kind of method of testing that is suitable for the air-cooled type heat exchanger performance, predicts the air-cooled type heat exchanger performance of homogenous configuration different size by structure optimization.
The technical scheme that addresses the above problem employing is: the method for building up of air-cooled type heat exchanger performance database is characterized in that carrying out according to the following steps:
(1) with air-cooled type heat exchanger waveform heat-radiation belt height, heat-radiation belt cross sectional shape, heat-radiation belt tooth pitch, heat-radiation belt wave height, turbulent sheet form, turbulent sheet wing height, turbulent sheet tooth pitch as the factor, determine the version of 8 core bodys by the DOE method, make 8 version corresponding heat exchanger with described core body then;
(2) in the possible flow range of the hot side medium of described heat exchanger and cold side medium, determine minimum, maximum and three variablees of intermediate value, form 9 operating modes after intersecting, by this 8 described heat exchangers are carried out the performance of wind tunnel test, therefrom select an optimization structure;
(3), make the heat exchanger master body of 16 kinds of different core body thickness and front face area at this optimization structure;
(4) the described heat exchanger master body at described 16 kinds of different sizes carries out 48 method performance tests, determine that each exemplar is under three kinds of different medium import temperature difference, heat exchange property and resistance performance when thermal medium flow and cold rate-of flow have 4 variablees are respectively set up complete database; Three variablees of the wherein import temperature difference are defined as: the standard condition import temperature difference is an intermediate value, reduces by 10 degree and increases by 10 degree as other two temperature approach.
Advantage of the present invention: 1) determine the optimum structure form of heat exchanger core with less test.2) need is made the heat exchanger exemplar of 16 kinds of different core body thickness and front face area, just can set up complete relatively performance database.3) can predict heat exchange performance and the drag characteristic of homostructural different core size geothermal heat exchanger under different flow accurately by this database.4) whole build the storehouse cycle short, cost is low, the prediction accuracy height.
As a further improvement on the present invention, in step (1), each described factor all has two level values, and the DOE method can select the following of degree of freedom to be limited to 3.
Described core size scope is: core height=200～500mm, and core is wide=200～500mm, and core is thick=50～150mm.Preferred size is: core height=300mm, and core is wide=300mm, and core is thick=80mm.
Described database form comprises exemplar drawing, exemplar photo, make any or multiple in exemplar type blocks, test figure raw readings and the database Diagrams.Described exemplar photo comprises heat exchanger, core body, heat-radiation belt and turbulent sheet.Described database Diagrams comprises:
When a. hot side-entrance temperature and the cold side inlet temperature temperature difference reduce 10 ℃
The chart of the hot effluent amount of heat vs,
The chart of heat vs cold side flow;
When the b. hot side-entrance temperature and the cold side inlet temperature temperature difference remain unchanged
The chart of the hot effluent amount of heat vs,
The chart of heat vs cold side flow;
When the c. hot side-entrance temperature and the cold side inlet temperature temperature difference increase 10 ℃
The chart of the hot effluent amount of heat vs,
The chart of heat vs cold side flow.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is an air-cooled type heat exchanger waveform heat-radiation belt synoptic diagram, and wherein (a) is front view, (b) is vertical view, (c) is left view, and the A-A that (d) is (b) is to cut-open view.
Fig. 2 is an air-cooled type heat exchanger turbulent flow sheet synoptic diagram, and wherein (a) is front view, (b) is left view.
Fig. 3 is an air-cooled type heat exchanger core body synoptic diagram, and wherein (a) is front view, (b) is left view.
Fig. 4 is the air-cooled type heat exchanger synoptic diagram, and wherein (a) is front view, (b) is left view.
Fig. 5 is a strip of paper used for sealing formula charge air cooler factor level table of the present invention.
Fig. 6 is the design result matrix.
Fig. 7 is a part factor design table of the present invention.
Fig. 8 is the clear kilsyth basalt of DOE method selection result of the present invention.
Among the figure, 1-heat-radiation belt, 2-turbulent flow sheet, the import of 3-thermal medium, 4-core body, the outlet of 5-thermal medium, H1-heat-radiation belt height, DT1-heat-radiation belt tooth pitch, DT2-turbulent flow sheet tooth pitch, H2-turbulent flow sheet height, W4-core body width, H4-core body height, L4-core body thickness.
Embodiment
With reference to Fig. 1-4, the method for testing of air-cooled type heat exchanger performance of the present invention is a research object with strip of paper used for sealing formula charge air cooler core body, and the corrugated tube type research method herewith.Specifically carry out according to the following steps:
(1) the DOE method is determined the version of 8 core bodys
With reference to Fig. 5, with air-cooled type heat exchanger waveform heat-radiation belt height, heat-radiation belt cross sectional shape, heat-radiation belt tooth pitch, heat-radiation belt wave height, turbulent sheet form, turbulent sheet wing height, turbulent sheet tooth pitch as the factor, each factor all has two level values, there is not reciprocation between each factor, i.e. noncausal relationship between each factor.
With reference to Fig. 6,7, draw the design result matrix by the DOE method.Operation DOE designs program, and obtains the clear kilsyth basalt of Fig. 8, draws and can select to be limited to 3 under the degree of freedom from table, that is to say minimumly will make 8 exemplars and test.
Make 8 version corresponding heat exchanger with described core body, the physical dimension of each core is the thick 80mm of the wide 300mm * core of the high 300mm * core of core.
(2) 9 experimental tests methods are selected optimization structure
In the possible flow range of the hot side medium of such heat exchanger and cold side medium, determine minimum, maximum and three variablees of intermediate value, form 9 operating modes (seeing Table 1) after intersecting, by this described 8 heat exchangers are carried out performance of wind tunnel test (test pattern reference table 2), therefrom select an optimization structure according to exchange capability of heat and resistance result.
Table 1
| Thermal medium flow A1 | Thermal medium flow A2 | Thermal medium flow A3 | Thermal medium flow A4 | |
| Cold rate-of flow B1 | A1B1 | A2B1 | A3B1 | A4B1 |
| Cold rate-of flow B2 | A1B2 | A2B2 | A3B2 | A4B2 |
| Cold rate-of flow B3 | A1B3 | A2B3 | A3B3 | A4B3 |
| Cold rate-of flow B4 | A1B4 | A2B4 | A3B4 | A4B4 |
Table 2
(3) the heat exchanger master body of 16 kinds of different core body thickness of making and front face area
At this optimization structure, make the heat exchanger master body of 16 kinds of different core body thickness and front face area, exemplar size (core height * core wide * core is thick) can be carried out combined crosswise according to such heat exchanger minimum, maximum and intermediate value.Concrete size is referring to table 3:
Table 3
| The core height | Core is wide | Core is | |
| Master body | |||
| 1 | 300mm | 300mm | 50mm |
| Master |
300mm | 300mm | 100mm |
| Master |
300mm | 300mm | 150mm |
| Master |
300mm | 600mm | 50mm |
| Master |
300mm | 900mm | 50mm |
| Master |
300mm | 1200mm | 50mm |
| Master body 7 | 600mm | 600mm | 50mm |
| Master |
600mm | 600mm | 100mm |
| Master body 9 | 600mm | 600mm | 150mm |
| Master body 10 | 600mm | 900mm | 50mm |
| Master |
600mm | 1200mm | 50mm |
| Master body 12 | 900mm | 900mm | 50mm |
| Master body 13 | 900mm | 900mm | 100mm |
| Master body 14 | 900mm | 900mm | 150mm |
| Master body 15 | 900mm | 1200mm | 50mm |
| Master body 16 | 1200mm | 1200mm | 50mm |
Complete database is set up in (4) 48 method performance tests
Heat exchanger exemplar at described 16 kinds of different sizes carries out 48 method performance tests, determine that each exemplar is under three kinds of different medium import temperature difference, heat exchange property and resistance performance when thermal medium flow and cold rate-of flow have 4 variablees are respectively set up complete database; Three variablees of the wherein import temperature difference are defined as: the standard condition import temperature difference is an intermediate value, reduces by 10 degree and increases by 10 degree as other two temperature approach.48 method rate-of flow combinations see Table 4.
Table 4
| Thermal medium flow A1 | Thermal medium flow A2 | Thermal medium flow A3 | Thermal medium flow A4 | |
| Cold rate-of flow B1 | A1B1 | A2B1 | A3B1 | A4B1 |
| Cold rate-of flow B2 | A1B2 | A2B2 | A3B2 | A4B2 |
| Cold rate-of flow B3 | A1B3 | A2B3 | A3B3 | A4B3 |
| Cold rate-of flow B4 | A1B4 | A2B4 | A3B4 | A4B4 |
Described database form comprises exemplar drawing, exemplar photo, make any or multiple in exemplar type blocks, test figure raw readings and the database Diagrams.Described exemplar photo comprises heat exchanger, core body, heat-radiation belt and turbulent sheet.Described database Diagrams comprises:
When a. hot side-entrance temperature and the cold side inlet temperature temperature difference reduce 10 ℃
The chart of the hot effluent amount of heat vs,
The chart of heat vs cold side flow;
When the b. hot side-entrance temperature and the cold side inlet temperature temperature difference remain unchanged
The chart of the hot effluent amount of heat vs,
The chart of heat vs cold side flow;
When the c. hot side-entrance temperature and the cold side inlet temperature temperature difference increase 10 ℃
The chart of the hot effluent amount of heat vs,
The chart of heat vs cold side flow.
What should be understood that is: the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
Claims (8)
1. the method for testing of air-cooled type heat exchanger performance is characterized in that carrying out according to the following steps:
(1) with air-cooled type heat exchanger waveform heat-radiation belt height, heat-radiation belt cross sectional shape, heat-radiation belt tooth pitch, heat-radiation belt wave height, turbulent sheet form, turbulent sheet wing height, turbulent sheet tooth pitch as the factor, determine the version of 8 core bodys by the DOE method, make 8 version corresponding heat exchanger with described core body then;
(2) in the possible flow range of the hot side medium of described heat exchanger and cold side medium, determine minimum, maximum and three variablees of intermediate value, form 9 operating modes after intersecting, by this 8 described heat exchangers are carried out the performance of wind tunnel test, therefrom select an optimization structure;
(3), make the heat exchanger master body of 16 kinds of different core body thickness and front face area at this optimization structure;
(4) the described heat exchanger master body at 16 kinds of different sizes carries out 48 method performance tests, determine that each exemplar is under three kinds of different medium import temperature difference, heat exchange property and resistance performance when thermal medium flow and cold rate-of flow have 4 variablees are respectively set up complete database; Three variablees of the wherein import temperature difference are defined as: the standard condition import temperature difference is an intermediate value, reduces by 10 degree and increases by 10 degree as other two temperature approach.
2. the method for testing of air-cooled type heat exchanger performance as claimed in claim 1 is characterized in that in step (1), each described factor all has two level values, and the DOE method can select the following of degree of freedom to be limited to 3.
3. the method for testing of air-cooled type heat exchanger performance as claimed in claim 1 is characterized in that the range of size of 8 core bodys in the described step (1) is: core height=200～500mm, and core is wide=200～500mm, and core is thick=50～150mm.
4. the method for testing of air-cooled type heat exchanger performance as claimed in claim 3 is characterized in that 8 core bodys are of a size of in the described step (1): core height=300mm, and core is wide=300mm, and core is thick=80mm.
5. the method for testing of air-cooled type heat exchanger performance as claimed in claim 1 is characterized in that the range of size of 16 core bodys in the described step (3) is: core height=300～1200mm, and core is wide=300～1200mm, and core is thick=50～150mm.
6. the method for testing of air-cooled type heat exchanger performance as claimed in claim 1 is characterized in that described database form comprises exemplar drawing, exemplar photo, makes any or multiple in exemplar type blocks, test figure raw readings and the database Diagrams.
7. the method for testing of air-cooled type heat exchanger performance as claimed in claim 6 is characterized in that described exemplar photo comprises heat exchanger, core body, heat-radiation belt and turbulent sheet.
8. the method for testing of air-cooled type heat exchanger performance as claimed in claim 6 is characterized in that described database Diagrams comprises:
When a. hot side-entrance temperature and the cold side inlet temperature temperature difference reduce 10 ℃
The chart of the hot effluent amount of heat vs,
The chart of heat vs cold side flow;
When the b. hot side-entrance temperature and the cold side inlet temperature temperature difference remain unchanged
The chart of the hot effluent amount of heat vs,
The chart of heat vs cold side flow;
When the c. hot side-entrance temperature and the cold side inlet temperature temperature difference increase 10 ℃
The chart of the hot effluent amount of heat vs,
The chart of heat vs cold side flow.
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| CN200710070755A CN101324907B (en) | 2007-08-14 | 2007-08-14 | Method for testing air-cooled type heat exchanger performance |
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| CN102288379B (en) * | 2011-05-26 | 2015-12-16 | 济南大学 | The system and method that a kind of radiator structure for vehicle and heat dispersion are analyzed |
| CN107742049B (en) * | 2017-11-13 | 2020-12-01 | 中国北方车辆研究所 | Design method of radiating system of armored vehicle under altitude-variable working condition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2090505U (en) * | 1990-02-23 | 1991-12-11 | 吴书圣 | High thermal efficiency finned radiator |
| CN1137824A (en) * | 1993-12-22 | 1996-12-11 | 艾利森电话股份有限公司 | Air cooling system |
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- 2007-08-14 CN CN200710070755A patent/CN101324907B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2090505U (en) * | 1990-02-23 | 1991-12-11 | 吴书圣 | High thermal efficiency finned radiator |
| CN1137824A (en) * | 1993-12-22 | 1996-12-11 | 艾利森电话股份有限公司 | Air cooling system |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-132848A 2006.05.25 |
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Effective date of registration: 20170802 Address after: 1101 room 6699, 261000 Health East Street, hi tech Zone, Shandong, Weifang Patentee after: Shandong silver wheel heat exchange system Co., Ltd. Address before: 317200 traffic Machinery Industry Zone, Fuxi street, Tiantai County, Zhejiang Patentee before: Zhejiang Yinlun Machinery Co., Ltd. |