CN101149312A - Heat exchanger performance test system for sealing cabinet heat radiation - Google Patents
Heat exchanger performance test system for sealing cabinet heat radiation Download PDFInfo
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- CN101149312A CN101149312A CNA2007101344919A CN200710134491A CN101149312A CN 101149312 A CN101149312 A CN 101149312A CN A2007101344919 A CNA2007101344919 A CN A2007101344919A CN 200710134491 A CN200710134491 A CN 200710134491A CN 101149312 A CN101149312 A CN 101149312A
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- heat exchanger
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- test system
- performance test
- sealing cabinet
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Abstract
The invention discloses a heat exchanger character test system used for radiating heat of sealing machine. It includes the cold room, hot room, tested heat exchanger. The outlet of hot and cold medium of heat exchanger is set with the air out conduit. From the outlet, it is the shrinking sect, timing butterfly bamper, the flux measurement device with the straight pipe in front and back, the diffusing sect and the frequency conversion draught fan at the duct end. The shrinking sect near the outlet is set with a pressure test interface, which is connected with one end of the differential pressure test device; the other is connected with the air. The data measured by the thermocouple is transformed to the electric signal, which is connected with the data collector and read the data by computer. The invention can adjust the draught fan to make the differential pressure of the inlet and outlet of hot /cold mediums zero and offset the decreased wind by the conduit resistance to meet the wind request of heat exchanger to get each parameter in every work state.
Description
One technical field
The present invention relates to the measuring technology of heat exchanger performance, particularly a kind of heat exchanger performance test system for sealing cabinet heat radiation.
Two background technologies
Along with the raising of the frequency and the integrated circuit integrated level of electron device, the unit volume thermal value increases rapidly.When exceeding the operating temperature range of electron device, its performance significantly descends, and influences the reliability of system.And in the abominable occasion of many environmental baselines, electron device must be placed in the rack of a sealing, make total system have premium properties such as dustproof, moistureproof, anticorrosive property gas thereby in abominable overall situation, create good subenvironment, but this while also can influence the heat radiation of electron device for instrument in the cabinet and device.Therefore, must take some measures necessary to strengthen its heat radiation.For closed rack, heat exchanger is housed usually, blower fan is installed in it, the air of circulation is provided, the interior temperature of rack is carried out exchange heat by effective and surrounding air and is minimized.
At present, test for heat exchanger thermal technology performance, in order to satisfy the test request of flow, pipeline is set up in the position of importing and exporting of being everlasting, can can't satisfy the traffic requirement of a certain operating point of required test in the engineering practical application because the existence of the resistance of ducting makes the flow in the heat exchanger descend like this.
Liu Yan etc. (Liu Yan. the experimental study of heat exchanger heat transfer and drag characteristic. experimental technique and management, 2005,22 (5): 90-92) at the foundation of laboratory heat interchanger experiment table, design a cover heat interchanger comprehensive performance experimental system, system has constituted the closed circulation test macro by water tank, heat interchanger, air cooler and a series of test instrumentation.(Leeization such as Li Hua, execute light. design of close-coupled industrial heat exchange device heat transfer test platform and application. Chemical Manufacture and technology, 2005,12 (4): 35-39) be the heat transfer and the drag characteristic of research fin-tube type and plate-fin compact heat exchanger, designed the heat transfer performance test platform of a cover based on the GCMS configuration software.But, the flow decline problem that all unresolved resistance of ducting loss of the experiment table of above-mentioned foundation is brought, this makes test result be applied in the middle of the actual engineering, can not reflect the correlation circumstance of required operating point, test result does not have actual reference.
Three summary of the invention
The object of the present invention is to provide a kind of test result can satisfy the heat exchanger performance test system for sealing cabinet heat radiation of practical application working condition requirement fully.
The technical scheme that realizes the object of the invention is: a kind of heat exchanger performance test system for sealing cabinet heat radiation, comprise cold environment chamber, thermal environment chamber, tested heat exchanger, fan is installed in the wherein tested heat exchanger, in order to the air of circulation to be provided, the outlet of the hot and cold medium circulation of heat exchanger is provided with wind pipe respectively; Each building block of wind pipe from outlet, is the frequency conversion induced draft fan that contraction section, speed-regulating butterfly valve, front and back have flow measurement device, diffuser and the end, air channel of straight length successively; Near the position that exports a pressure measurement interface is set respectively at two contraction sections, link to each other with an end of differential pressure testing tool, the other end communicates with atmosphere, an operating point of every change thermal medium side or cold side medium, all regulate corresponding frequency conversion induced draft fan, make that differential pressure is zero, and then write down the value of each parameter; The thermal medium round-robin of heat exchanger is imported and exported, and the import and export of cold medium circulation are provided with the measurement that thermopair is used for temperature respectively, and the data conversion that thermopair records is an electric signal, links to each other with data acquisition unit, reads by computing machine.
Method of testing of the present invention is: when carrying out the heat transfer property test, the speed-regulating butterfly valve standard-sized sheet, stablize the inlet temperature and the flow of a side medium, and the inlet temperature of opposite side medium, repeatedly change the flow of opposite side medium, flow of every change all will be regulated induced draft fan, makes that the pressure reduction of differential pressure testing tool is zero.Record the value of each parameter then, can draw the Changing Pattern of heat transfer coefficient with fluid flow.When the test resistance performance, in order to obtain the resistance performance curve of thermal medium or cold side medium, regulate the position of its corresponding butterfly valve, if pressure reduction is not zero yet behind the butterfly valve standard-sized sheet, add air quantity, the maximum flow when to obtain pressure reduction be zero with corresponding frequency conversion induced draft fan.
The present invention compared with prior art, its remarkable advantage is: the present invention can be by regulating induced draft fan, makes the thermal medium round-robin import of heat exchanger and the pressure reduction of outlet, and the pressure reduction of the import of cold medium circulation and outlet is zero.Like this, illustrated that the pressure of the import and export of heat exchanger this moment be atmospheric pressure all, thereby remedied the air quantity that reduces because of the resistance of ducting, met the air quantity requirement of heat exchanger itself fully, measured the value of each parameter under every kind of operating mode exactly.
Four description of drawings
Accompanying drawing is that heat exchanger performance test system for sealing cabinet heat radiation of the present invention constitutes synoptic diagram.
Five embodiments
Describe the detail and the performance of this test macro in detail below in conjunction with accompanying drawing.
Adopt even speed tube flow sensor A3 and B3 to carry out flow measurement, the outlet A8 of fluid and B8 are rectangle, in order to satisfy the measuring condition of even speed tube, with it be that a diameter is circular wind pipe A4 and the B4 of 15cm, outlet A8, B8 are connected with B6 with the contraction section A6 that the intersegmental employing length of circular straighttube separately is 100cm respectively.Select corresponding even speed tube for use according to test request again, select the even speed tube of LGB-G here for use.According to the form of upper reaches shock resistance part, even speed tube upstream flow development length is 8D, and the downstream flow development length is 3D (D is the diameter of circular pipe); Speed-regulating butterfly valve A5 and B5 are installed between even speed tube flow sensor A3, B3 and contraction section A6 and B6, can produce different resistance drops; Adopt the EJA110A differential pressure transmitter to carry out the measurement of pressure.
Exporting the position annular pressure of A8 and B810cm from hot and cold medium circulation, pressure measurement interface A7 is connected with proofed sleeve with an end of two differential pressure transmitters respectively with B7, and the differential pressure transmitter other end communicates with atmosphere.Frequency conversion induced draft fan A1 and B1 are installed in the air outlet end in air channel, and frequency conversion induced draft fan A1, B1 are respectively with to adopt length be that the diffuser A2 of 50cm is connected with B2 between the air outlet in separately air channel.According to the calculating of blast, flow, what adopt here is that model is the centrifugal fan of 4-72-2.8.When carrying out the heat transfer property test, stablize the inlet temperature and the flow of a side medium, and the inlet temperature of opposite side medium, the wind speed that utilizes this heat exchanger of adjusting to carry is regulated the flow that software repeatedly changes the opposite side medium, flow of every change, all to regulate induced draft fan, make that the pressure reduction of differential pressure transmitter is zero.Record the value of each parameter then, can draw the Changing Pattern of heat transfer coefficient with fluid flow.
Claims (6)
1. heat exchanger performance test system for sealing cabinet heat radiation: comprise cold environment chamber [14], thermal environment chamber [15], tested heat exchanger [11], fan [A10] and [B10] is installed in the wherein tested heat exchanger [11], in order to the air of circulation to be provided, it is characterized in that: the thermal medium loop exit [A8] of heat exchanger [11] and cold medium circulation outlet [B8] are provided with wind pipe [A4] and [B4] respectively; Each building block of wind pipe [A4] and [B4], from outlet [A8] and [B8], be that contraction section [A6] and [B6], speed-regulating butterfly valve [A5] and [B5], front and back are provided with the flow measurement device [A3] of straight length and frequency conversion induced draft fan [A1] and [B1] of [B3], diffuser [A2] and [B2] and end, air channel successively; Contraction section [A6] and [B6] respectively are provided with pressure measurement interface [A7] and [B7] near the position of outlet [A8] and [B8], link to each other with differential pressure testing tool one end, the other end communicates with atmosphere, an operating point of every change thermal medium side or cold side medium, all regulate corresponding frequency conversion induced draft fan [A1] and [B1], make that differential pressure is zero, and then write down the value of each parameter; The thermal medium round-robin import [A9] of heat exchanger [11], outlet [A8], and the import of cold medium circulation [B9], the outlet [B8] measurement that thermopair is used for temperature is set respectively, the data conversion that thermopair records is an electric signal, links to each other with data acquisition unit [12], reads by computing machine [13].
2. heat exchanger performance test system for sealing cabinet heat radiation according to claim 1 is characterized in that: the temperature point number of import [A9] and [B9] is no less than 6 points; The temperature point number of outlet [A8] and [B8] is no less than 9 points; And the thermopair in this every everywhere place all is that back in parallel links to each other with data acquisition unit [12].
3. heat exchanger performance test system for sealing cabinet heat radiation according to claim 1 is characterized in that: the measuring junction and the pipeline between free end of thermopair are heat insulation.
4. heat exchanger performance test system for sealing cabinet heat radiation according to claim 1, it is characterized in that: flow measurement device adopts mean velocity tube flowmeter, even speed tube upstream straight length minimum length is 8D, downstream straight length minimum length is 3D, and D is the equivalent diameter of wind pipe [A4] and [B4].
5. heat exchanger performance test system for sealing cabinet heat radiation according to claim 1 is characterized in that: the ways of measure pressure of pressure measurement interface [A7] and [B7] adopts annular pressure.
6. heat exchanger performance test system for sealing cabinet heat radiation according to claim 5 is characterized in that: contraction section [A6] is vertical with the inside pipe wall face with pressure port on [B6].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2007101344919A CN101149312B (en) | 2007-10-30 | 2007-10-30 | Heat exchanger performance test system for sealing cabinet heat radiation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101344919A CN101149312B (en) | 2007-10-30 | 2007-10-30 | Heat exchanger performance test system for sealing cabinet heat radiation |
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| CN101149312A true CN101149312A (en) | 2008-03-26 |
| CN101149312B CN101149312B (en) | 2010-09-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102506949A (en) * | 2011-09-29 | 2012-06-20 | 常州豪邦纳米科技涂料有限公司 | System for automatically monitoring blast volume |
| CN102573427A (en) * | 2012-02-02 | 2012-07-11 | 江西泰豪集通技术有限公司 | Water cooling type cooling device for modular data center |
| CN103033366A (en) * | 2012-12-12 | 2013-04-10 | 中国船舶重工集团公司第七一一研究所 | Spark arrester performance test device |
| CN104749203A (en) * | 2013-12-30 | 2015-07-01 | 印度石油有限公司 | Method and system for testing and evaluating heat transfer elements at high temperature operations |
| CN109946098A (en) * | 2019-02-14 | 2019-06-28 | 江苏科技大学 | A kind of frozen condition lower surface cooler performance testing stand of enclosed band centre refrigerant |
| CN111752820A (en) * | 2019-03-29 | 2020-10-09 | 上海哔哩哔哩科技有限公司 | Pressure testing method of gPC interface, computer equipment and storage medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102645347A (en) * | 2012-04-25 | 2012-08-22 | 株洲联诚集团有限责任公司 | Testing system for heat dissipation potential of oil-water cooling tower of locomotive |
Family Cites Families (2)
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|---|---|---|---|---|
| US6035700A (en) * | 1997-10-10 | 2000-03-14 | Apv Corporation | Method of leak testing an assembled plate type heat exchanger |
| CN1987440A (en) * | 2006-12-19 | 2007-06-27 | 上海理工大学 | Combining method for multiple thermotechnical complex performance detection test |
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2007
- 2007-10-30 CN CN2007101344919A patent/CN101149312B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506949A (en) * | 2011-09-29 | 2012-06-20 | 常州豪邦纳米科技涂料有限公司 | System for automatically monitoring blast volume |
| CN102573427A (en) * | 2012-02-02 | 2012-07-11 | 江西泰豪集通技术有限公司 | Water cooling type cooling device for modular data center |
| CN103033366A (en) * | 2012-12-12 | 2013-04-10 | 中国船舶重工集团公司第七一一研究所 | Spark arrester performance test device |
| CN103033366B (en) * | 2012-12-12 | 2015-04-15 | 中国船舶重工集团公司第七一一研究所 | Spark arrester performance test device |
| CN104749203A (en) * | 2013-12-30 | 2015-07-01 | 印度石油有限公司 | Method and system for testing and evaluating heat transfer elements at high temperature operations |
| CN104749203B (en) * | 2013-12-30 | 2018-02-13 | 印度石油有限公司 | For testing and assessing the method and system of the heat transfer element under high-temperature operation |
| CN109946098A (en) * | 2019-02-14 | 2019-06-28 | 江苏科技大学 | A kind of frozen condition lower surface cooler performance testing stand of enclosed band centre refrigerant |
| CN111752820A (en) * | 2019-03-29 | 2020-10-09 | 上海哔哩哔哩科技有限公司 | Pressure testing method of gPC interface, computer equipment and storage medium |
| CN111752820B (en) * | 2019-03-29 | 2024-01-19 | 上海哔哩哔哩科技有限公司 | gRPC interface pressure test method, computer equipment and storage medium |
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| CN101149312B (en) | 2010-09-08 |
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