CN1563965A - Device for testing flowing boiling heat exchanging performance inside of coolant pipe - Google Patents
Device for testing flowing boiling heat exchanging performance inside of coolant pipe Download PDFInfo
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- CN1563965A CN1563965A CN 200410017005 CN200410017005A CN1563965A CN 1563965 A CN1563965 A CN 1563965A CN 200410017005 CN200410017005 CN 200410017005 CN 200410017005 A CN200410017005 A CN 200410017005A CN 1563965 A CN1563965 A CN 1563965A
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Abstract
The installation includes outdoor machine set, indoor machine set, electronic expansion valve, electronic heater, cut off valve, mass flowmeter, mixing chamber, preheater, sight glass and experiment segment. Outdoor machine set makes refrigerant be condensed. Compressor in frequency conversion type is as power source for loop of refrigerant. Flux of refrigerant in test pipe, which is connected to indoor machine set, is adjusted from bypath. Adjusting opening of adjustable valve on oil return tube connected to second oil container and adjusting air flow on by path of compressor and pressure in test tube realize desired operating condition for experiment without inference by meteorological parameter outdoor all-year so as to guarantee research under large flux and wide range of evaporating pressure. Advantages are: small floor space, flexible operation and simple control.
Description
Technical field:
What the present invention relates to is a kind of proving installation of studying flow boiling and heat transfer mechanism in the refrigerant pipe, particularly a kind of device that adopts convertible frequency air-conditioner unit and electric expansion valve to realize under the annual meteorological condition flow boiling and heat transfer characteristic in the build-in test refrigerant pipe on a large scale belongs to the Refrigeration ﹠ Air-Conditioning technical field.
Background technology:
The research of refrigeration working medium flow boiling and heat transfer mechanism in pipe belongs to one of most important fundamental research, understands the flow boiling and heat transfer characteristic of cold-producing medium in evaporation tube, and is extremely important to the optimal design that instructs evaporator.In recent years, the fluid interchange research to alternative working medium of R22 such as novel environment-friendly refrigerants such as R407C, R410A has caused extensive concern.
Study the flow of refrigerant The Performance for Boiling Heat Transfer, need to realize the flow boiling of cold-producing medium in pipe, i.e. cold-producing medium evaporation-condensation-evaporating course.Guarantee that in this process the convenience that parameters such as cold-producing medium evaporating pressure, flow are regulated on a large scale is very important.In prior art, generally adopt three circuit types.Be that total system is divided into three fluid loops: refrigerant loop, hot-water return and ethylene glycol-aqueous solution loop.Wherein the power source of refrigerant loop adopts speed-variable pump; Hot-water return is the thermal source of cold-producing medium, makes the cold-producing medium evaporation; The ethylene glycol loop is the low-temperature receiver of cold-producing medium, realizes the condensation process of cold-producing medium.There is following deficiency in this device that is used for testing flow boiling and heat transfer characteristic in the refrigerant pipe: 1) device is complicated.In order to guarantee cold-producing medium evaporation and condensation, except that refrigerant loop, system need provide two constant temperature fluid loops in addition, and promptly constant-temperature hot water loop and constant temperature ethylene glycol-aqueous solution loop needs a plurality of high cryostats, causes that investment is big, floor area is big; 2) adopt the power source of speed-variable pump as refrigerant loop, though can regulate refrigerant flow, very limited to regulating evaporating pressure.3) because the evaporator section thermal source is a hot water, therefore can only realize the air conditioning condition more than 0 ℃, then can not realize for the heat pump operating mode below 0 ℃.4) because system is huge, operation control is complicated, so that device reaches the steady operational status time is longer, is unfavorable for the switching of experiment condition.
Summary of the invention:
For deficiency and the defective that overcomes prior art, the present invention proposes the device that adopts convertible frequency air-conditioner unit and electric expansion valve to realize flow boiling and heat transfer test operating mode in the refrigerant pipe.Mainly comprise outdoor unit, indoor units, the rearmounted electric heater of indoor set, stop valve, mass flowmeter, mixing chamber, electric expansion valve, primary heater, visor, experimental section, the rearmounted electric heater of experimental section, wherein outdoor unit comprises frequency-changeable compressor, first order oil separator, second level oil separator, third level oil separator, the electric expansion valve in the condenser, off-premises station, first oil container, second oil container, variable valve.
Be divided into two refrigerant loops in this device.The high pressure liquid refrigerant that is condensed is divided into two-way at the condensator outlet place, i.e. major loop and bypass circulation.
Major loop: through the liquid refrigerant of condenser condenses behind stop valve, refrigerant mass fluxes meter, mixing chamber, experimental section electric expansion valve, primary heater, visor, experimental section, visor, mixing chamber, the rearmounted electric heater of experimental section with bypass circulation in refrigerant mixed after sucked back by compressor.
Bypass circulation: the high pressure liquid refrigerant that comes out from condenser behind off-premises station electric expansion valve, indoor set, the rearmounted electric heater of indoor set with major loop cold-producing medium flow back to compressor after converging;
The power source of refrigerant loop is provided by the frequency-changeable compressor in the outdoor unit.For vapour compression refrigeration air-conditioning unit, can sneak into a certain amount of lubricating oil inevitably in the compressor air-discharging, cause influence in order not make this part lubricating oil enter experimental section to flow boiling and heat transfer in the pure refrigerant pipe, three high-efficiency oil separator are installed in the present invention additional between compressor outlet and condenser inlet, three oil separators connect by series system, are used for the lubricating oil that carries in the separate compressors exhaust.Simultaneously, in order to prevent that compressor from moving under the oil starvation state, this device is introduced first oil container after with first order oil separator and the isolated lubricating oil parallel connection of second level oil separator, the isolated lubricating oil of third level oil separator directly is introduced into second oil container, by a balance pipe first oil container and second oil container is communicated with.Respectively draw a scavenge pipe on two oil containers, all be connected to the compressor return air pipe, realize automatic oil return smoothly, thereby guarantee the normal operation of compressor by the height pressure differential.
The present invention adopts the off-premises station of air-conditioning unit to replace the ethylene glycol-aqueous solution loop in the prior art to make condensation of refrigerant; With the power source of the speed-variable pump in the replacement of the frequency-changeable compressor in the air-conditioning unit prior art as refrigerant loop; By the bypass of indoor set, enter test pipeline section inner refrigerant flow with flexible with test pipeline section realization in parallel cold-producing medium.By regulate with scavenge pipe that second oil container links to each other on the aperture of variable valve, regulate compressor bypass tolerance and test section pressure, realize that this device is not subjected to indoor and outdoor temperature parameter influence to obtain required experiment condition under annual meteorological condition, so that in big flow and wide evaporating pressure scope, study cold-producing medium flow boiling and heat transfer characteristic in pipe.This device have the stable state of the reaching time short, floor area is little, small investment, flexible operation, the simple advantage of control, thereby can improve conventional efficient.
Description of drawings:
Fig. 1 is a proving installation structure principle chart of the present invention.
Fig. 2 is outdoor unit inner structure synoptic diagram.Among the figure, 1 is outdoor unit, and 2 is indoor units, and 3 is the rearmounted electric heater of indoor set, 4 is stop valve, and 5 is mass flowmeter, and 6 and 13 is mixing chamber, and 7 is electric expansion valve, 8 is primary heater, and 9 and 12 is visor, and 10 is experimental section, and 11 is the rearmounted electric heater of experimental section.14 is frequency-changeable compressor, and 15 is first order oil separator, and 16 is second level oil separator, and 17 is third level oil separator, and 18 is condenser, and 19 is the electric expansion valve in the off-premises station, 20 first oil containers, and 21 is second oil container, 22 and 23 is variable valve.
Specific implementation method:
Below in conjunction with accompanying drawing concrete enforcement of the present invention is further described.
As shown in Figure 1 and Figure 2, the present invention includes outdoor unit 1, indoor units 2, the rearmounted electric heater 3 of indoor set, stop valve 4, mass flowmeter 5, mixing chamber 6 and 13, electric expansion valve 7, primary heater 8, visor 9 and 12, experimental section 10, the rearmounted electric heater 11 of experimental section, frequency-changeable compressor 14, first order oil separator 15, second level oil separator 16, third level oil separator 17, the electric expansion valve 19 in the condenser 18, off-premises station, first oil container, 20, the second oil containers 21, variable valve 22 and 23.
By shown in Figure 1, outdoor unit 1 has a refrigerant inlet and two refrigerant outlets, one outlet links to each other with stop valve 4 imports in the cold-producing medium major loop, the outlet of stop valve 4 links to each other with the import of mass flowmeter 5, the outlet of mass flowmeter 5 links to each other with the import of mixing chamber 6, the outlet of mixing chamber 6 links to each other with the import of electric expansion valve 7, the outlet of electric expansion valve 7 is by primary heater 8, visor 9 links to each other with experimental section 10 imports, import with the rearmounted electric heater 11 of experimental section is connected with mixing chamber 13 by visor 12 in the outlet of experimental section 10, the outlet of the rearmounted electric heater 11 of experimental section and the import of outdoor unit 1 are connected, and more than constitute the cold-producing medium major loop.Another outlet of outdoor unit links to each other with the import of indoor set 2, the outlet of indoor set is connected in the import of the rearmounted electric heater 3 of indoor set, the outlet of the rearmounted electric heater 11 of experimental section in the outlet of the rearmounted electric heater 3 of indoor set and the major loop merges the back by threeway and links to each other with the import of outdoor unit 1, thus formation refrigerant bypass loop.
As shown in Figure 2, the outlet of compressor 14 links to each other with the import of first order oil separator 15, the refrigerant outlet of first order oil separator 15 links to each other with the import of second level oil separator 16, the lubricating oil outlet of first order oil separator 15 separates the import that is connected to first oil container 20 after 16 lubricating oil outlet merges by threeway with second level oil, the refrigerant outlet of second level oil separator 16 inserts the import of third level oil separator 17, the refrigerant outlet of third level oil separator 17 links to each other with the import of condenser 18, the outlet of condenser 18 is shunted by three-way connection, one end links to each other with the import of stop valve 4 in the major loop, the import of the electric expansion valve 19 in the other end and the outdoor unit 1 links to each other, and the outlet of electric expansion valve 19 links to each other with the import of indoor units 2.The lubricating oil outlet of third level oil separator 17 links to each other with the import of second oil container 21, the outlet of first oil container 20 links to each other with the import of variable valve 22, the outlet of variable valve 22 links to each other with the import of compressor 14, the outlet of second oil container 21 links to each other with the import of variable valve 23, and the outlet of variable valve 23 is connected to the import of compressor 14.
Cold-producing medium from major loop and bypass circulation is sucked by frequency-changeable compressor 14, be introduced into first order oil separator 15 after compression, after realizing gas-oil separation, gas enters second level oil separator 16 once more, after realizing gas-oil separation, gas enters third level oil separator 17 once more, enters condenser 18 condensations through the pure refrigerant gas after three grades of gas-oil separation.After the first order and the isolated lubricating oil merging of second level oil separator, enter first oil container 20, enter second oil container 21 through third level oil separator 17 isolated lubricating oil.Lubricating oil in first and second oil containers respectively links to each other with the compressor air suction mouth by a scavenge pipe.Realize automatic oil return by height pressure reduction, guarantee that compressor normally moves.
The present invention is by regulating compressor rotary speed control cold-producing medium total flow, the aperture control bypass flow of the outer organic electronic expansion valve of conditioning chamber, and the aperture control experimental section flow of adjusting experimental section electric expansion valve, the adjusting on a large scale that realizes entering the refrigerant flow in the experimental section.By regulating the cold-producing medium evaporating pressure of pressing fast machine rotating speed and experimental section electronic expansion valve opening to control experimental section.By regulate with scavenge pipe that second oil container 21 links to each other on the aperture of variable valve 23, adjustable compressor bypass tolerance and test section pressure, thereby realized that this device is not subjected to indoor and outdoor temperature parameter influence to obtain required experiment condition under annual meteorological condition, so that in big flow and wide evaporating pressure scope, study cold-producing medium flow boiling and heat transfer characteristic in pipe.
Claims (2)
1, a kind of device of testing flow boiling and heat transfer characteristic in the refrigerant pipe, comprise outdoor unit (1), indoor set (2), the rearmounted electric heater (3) of indoor set, stop valve (4), mass flowmeter (5), mixing chamber (6) and (13), electric expansion valve (7), primary heater (8), visor (9) and (12), experimental section (10), the rearmounted electric heater (11) of experimental section, it is characterized in that outdoor unit (1) has a refrigerant inlet and two refrigerant outlets, one of them outlet links to each other with stop valve (4) import in the cold-producing medium major loop, the outlet of stop valve (4) links to each other with the import of mass flowmeter (5), the outlet of mass flowmeter (5) links to each other with the import of mixing chamber (6), the outlet of mixing chamber (6) links to each other with the import of electric expansion valve (7), the outlet of electric expansion valve (7) is by primary heater (8), visor (9) links to each other with experimental section (10) import, import with the rearmounted electric heater of experimental section (11) is connected with mixing chamber (13) by visor (12) in the outlet of experimental section (10), the outlet of the rearmounted electric heater of experimental section (11) and the import of outdoor unit (1) are connected, more than constitute the cold-producing medium major loop, another outlet of outdoor unit (1) links to each other with the import of indoor set (2), the outlet of indoor set (2) is connected in the import of the rearmounted electric heater of indoor set (3), the outlet of the rearmounted electric heater of experimental section (11) in the outlet of the rearmounted electric heater of indoor set (3) and the major loop merges the back by threeway and links to each other with the import of outdoor unit (1), thus formation refrigerant bypass loop.
2, the device of flow boiling and heat transfer characteristic in the test refrigerant pipe according to claim 1, it is characterized in that outdoor unit (1) comprises, frequency-changeable compressor (14), first order oil separator (15), second level oil separator (16), third level oil separator (17), condenser (18), electric expansion valve (19) in the off-premises station, first oil container (20), second oil container (21), variable valve (22) and (23), the outlet of frequency-changeable compressor (14) links to each other with the import of first order oil separator (15), the refrigerant outlet of first order oil separator (15) links to each other with the import of second level oil separator (16), after merging by threeway, the lubricating oil outlet of first order oil separator (15) separates (16) with second level oil lubricating oil outlet is connected to the import of first oil container (20), the refrigerant outlet of second level oil separator (16) inserts the import of third level oil separator (17), the refrigerant outlet of third level oil separator (17) links to each other with the import of condenser (18), the outlet of condenser (18) is shunted by three-way connection, one end links to each other with the import of stop valve (4) in the major loop, the import of the electric expansion valve (19) in the other end and the outdoor unit (1) links to each other, the outlet of electric expansion valve (19) links to each other with the import of indoor units (2), the lubricating oil outlet of third level oil separator (17) links to each other with the import of second oil container (21), the outlet of first oil container (20) links to each other with the import of variable valve (22), the outlet of variable valve (22) links to each other with the import of compressor (14), the outlet of second oil container (21) links to each other with the import of variable valve (23), and the outlet of variable valve (23) is connected to the import of compressor (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100170051A CN100389320C (en) | 2004-03-18 | 2004-03-18 | Device for testing flowing boiling heat exchanging performance inside of coolant pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100170051A CN100389320C (en) | 2004-03-18 | 2004-03-18 | Device for testing flowing boiling heat exchanging performance inside of coolant pipe |
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| Publication Number | Publication Date |
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| CN1563965A true CN1563965A (en) | 2005-01-12 |
| CN100389320C CN100389320C (en) | 2008-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100170051A Expired - Fee Related CN100389320C (en) | 2004-03-18 | 2004-03-18 | Device for testing flowing boiling heat exchanging performance inside of coolant pipe |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062699A (en) * | 2010-11-25 | 2011-05-18 | 奇瑞汽车股份有限公司 | Vehicle air-conditioning system pressure test device |
| CN101852749B (en) * | 2009-04-03 | 2012-02-08 | 李蔚 | All-in-on device for evaporation/condensation heat transmission testing in micro pipe and testing method thereof |
| CN103675016A (en) * | 2012-09-04 | 2014-03-26 | 华东理工大学 | Testing system for phase change heating and temperature controlling effects of heat release type tubular reactor |
| CN111189735A (en) * | 2020-01-20 | 2020-05-22 | 上海交通大学 | Oil-containing refrigerant/stagnant oil testing device and method for plate heat exchanger and single pipe |
| CN112880853A (en) * | 2021-01-11 | 2021-06-01 | 浙大宁波理工学院 | Small-diameter heat exchange pipe wall temperature measuring device in-pipe boiling experiment |
| CN113776863A (en) * | 2021-07-19 | 2021-12-10 | 威凯检测技术有限公司 | Comprehensive test device and method for remote refrigeration appliance |
| CN116223266A (en) * | 2023-05-05 | 2023-06-06 | 四川善邦交大建设工程有限公司 | Hardness check out test set is used in steel construction production based on it is spacing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4549816A (en) * | 1982-10-13 | 1985-10-29 | Hoxan Corporation | Apparatus for measuring melting and boiling points of gas |
| DE3413535C1 (en) * | 1984-04-11 | 1985-11-14 | Danfoss A/S, Nordborg | Measuring device for determining a proportion of liquid in the refrigerant |
| FR2694631B1 (en) * | 1992-08-10 | 1994-11-04 | Carrier Sa | Method and device for determining the phase of a compressed gas; process and device for transferring a compressed gas using them. |
-
2004
- 2004-03-18 CN CNB2004100170051A patent/CN100389320C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852749B (en) * | 2009-04-03 | 2012-02-08 | 李蔚 | All-in-on device for evaporation/condensation heat transmission testing in micro pipe and testing method thereof |
| CN102062699A (en) * | 2010-11-25 | 2011-05-18 | 奇瑞汽车股份有限公司 | Vehicle air-conditioning system pressure test device |
| CN103675016A (en) * | 2012-09-04 | 2014-03-26 | 华东理工大学 | Testing system for phase change heating and temperature controlling effects of heat release type tubular reactor |
| CN103675016B (en) * | 2012-09-04 | 2016-04-06 | 华东理工大学 | The test macro of a kind of release type tubular reactor phase transformation heat-obtaining and temperature control effect |
| CN111189735A (en) * | 2020-01-20 | 2020-05-22 | 上海交通大学 | Oil-containing refrigerant/stagnant oil testing device and method for plate heat exchanger and single pipe |
| CN112880853A (en) * | 2021-01-11 | 2021-06-01 | 浙大宁波理工学院 | Small-diameter heat exchange pipe wall temperature measuring device in-pipe boiling experiment |
| CN113776863A (en) * | 2021-07-19 | 2021-12-10 | 威凯检测技术有限公司 | Comprehensive test device and method for remote refrigeration appliance |
| CN113776863B (en) * | 2021-07-19 | 2024-03-19 | 威凯检测技术有限公司 | Comprehensive test device and method for remote refrigeration appliance |
| CN116223266A (en) * | 2023-05-05 | 2023-06-06 | 四川善邦交大建设工程有限公司 | Hardness check out test set is used in steel construction production based on it is spacing |
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| Publication number | Publication date |
|---|---|
| CN100389320C (en) | 2008-05-21 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Sanjiang Electric Group Co., Ltd. Assignor: Shanghai Jiao Tong University Contract fulfillment period: 2009.1.8 to 2015.1.7 contract change Contract record no.: 2009320000503 Denomination of invention: Device for testing flowing boiling heat exchanging performance inside of coolant pipe Granted publication date: 20080521 License type: Exclusive license Record date: 2009.3.26 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.1.8 TO 2015.1.7; CHANGE OF CONTRACT Name of requester: JIANGSU SANJIANG ELECTRIC GROUP CO.,LTD. Effective date: 20090326 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20110318 |