CN105606644B - All working condition high precision heat exchange single tube performance test apparatus - Google Patents
All working condition high precision heat exchange single tube performance test apparatus Download PDFInfo
- Publication number
- CN105606644B CN105606644B CN201610021575.0A CN201610021575A CN105606644B CN 105606644 B CN105606644 B CN 105606644B CN 201610021575 A CN201610021575 A CN 201610021575A CN 105606644 B CN105606644 B CN 105606644B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- water
- cold
- cylinder
- test
- 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.)
- Active
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 all working condition high precision heat exchange single tube performance test apparatus, including cylinder, first pipeline and the second pipeline are set in cylinder, cold and hot matchmaker's unit and test cell are provided on the outside of cylinder, cold and hot matchmaker's unit and test cell are respectively connected by two with valvular pipe section in parallel with the water inlet of the first pipeline and the second pipeline；The water outlet of first pipeline is connected with first circulation pipeline, and first circulation pipeline is connected by two with backwater end of the valvular pipe section in parallel respectively with the backwater end of cold and hot matchmaker's unit and test cell；The water outlet of second pipeline is connected with second circulation pipeline, and second circulation pipeline is connected by two with backwater end of the valvular pipe section in parallel respectively with the backwater end of cold and hot matchmaker's unit and test cell.The present apparatus is simple in structure, cost is relatively low, stable, and can simulate more complete measurement condition；Measuring accuracy is greatly improved than conventional apparatus simultaneously, it is ensured that the accuracy and reliability of the experimental rig.
Description
Technical field
The invention belongs to thermal test apparatus field, more particularly to a kind of all working condition high precision heat exchange single tube performance test dress
It puts.
Background technology
With the development of economy, people increasingly focus on the comfort level of living environment, and the use of refrigeration air-conditioner is also increasingly
Extensively.China is also faced with its jumbo consumption to the energy while Air Conditioning Industry acquisition economic benefit is greatly developed.According to system
Meter, is often only the power consumption of room conditioning just more than 100,000,000,000 kilowatt hours, the power consumption of cooling in summer air-conditioning accounts for social total power consumption
30% or so.Power tense situation caused by how alleviating huge refrigeration air-conditioner energy consumption, becomes focus of concern.In sky
In adjusting system, heat exchanger mainly includes evaporator and condenser, their heat exchange efficiency is directly related to the energy consumption of air-conditioning.Heat exchange
Basic unit of the device single tube as evaporator and condenser, the height of the coefficient of heat transfer is to the heat transfer effect of evaporator and condenser
Play important influence.It is preferably studied for the producer that helps to freeze and how to improve the performance of single tube, exchange heat single tube performance test
Device just seems very important.
Traditional heat exchange single column run device is commonly made to the form of heat exchange container.As shown in fig. 6, two above and below generally having
A cylinder composition.It is connected between two cylinders with as big as possible connecting tube, for the circulation of refrigerant, still：1. two cylinders
At the connecting tube nozzle of body, refrigerant circulation is more, other not places at connection nozzle between cylinder, refrigerant circulation can be compared with
It is few, it can cause to exchange heat uneven, situations such as Work condition analogue is untrue；2. two cylinders are sufficiently bulky, manufacture difficulty is big, can increase
Workload during test operation reduces working efficiency, increases cost of labor；3. container machined surface is more, more refrigerants can be increased
The possibility of leak source improves the workload of daily maintenance；4. traditional cylinder is a closed container, internal refrigerant is theoretical
On be saturation state always, so the heat exchange situation under saturation state can only be simulated, make the condition range that experimental performance is tested by
Limitation is arrived；5. traditional cylinder since volume is larger, causes cylinder leakage heat more, so the accuracy of test is relatively difficult to guarantee.
Invention content
The present invention in order to overcome the above-mentioned deficiencies of the prior art, provides a kind of all working condition high precision heat exchange single tube performance examination
Experiment device, the present apparatus is simple in structure, cost is relatively low, stable, and can simulate more complete measurement condition；Test essence simultaneously
Degree is greatly improved than conventional apparatus, it is ensured that the accuracy and reliability of the experimental rig.
To achieve the above object, present invention employs following technical schemes：
A kind of all working condition high precision heat exchange single tube performance test apparatus, the cylinder of the seal shape including fixed setting are described
Refrigerant is also filled in cylinder, the first pipeline and the second pipeline along cylinder axial arranging are provided in the cylinder, it is described
First pipeline and the second pipeline are removably mounted on cylinder, and the both ends of the first pipeline and the second pipeline are stretched out in cylinder
Outside, and first pipeline and the second pipeline are separately positioned on the both sides up and down of cylinder；
The present apparatus further includes cold and hot source unit and the test cell being arranged on the outside of cylinder, the water outlet of the cold and hot source unit
End passes through two in parallel and be connected with water inlet of the valvular pipeline section respectively with the first pipeline and the second pipeline, surveys
It is in parallel and enter respectively with the first pipeline and the second pipeline with valvular pipeline section also by two to try the water outlet of unit
The mouth of a river is connected；
The water outlet of first pipeline is connected with the water inlet end of first circulation pipeline, the water outlet of first circulation pipeline
It is in parallel and be connected with backwater end of the valvular pipeline section respectively with cold and hot source unit and test cell by two；It is described
The water outlet of second pipeline is connected with the water inlet end of second circulation pipeline, and the water outlet of second circulation pipeline passes through two parallel connections
And be connected with backwater end of the valvular pipeline section respectively with cold and hot source unit and test cell.
Preferably, the cold and hot source unit includes Cooling and Heat Source water tank, Cooling and Heat Source water pump, is located at Cooling and Heat Source pump entrance
Cold and hot source unit three-way control valve and the Cooling and Heat Source unit stream gauge for being located at Cooling and Heat Source pump outlet；The cold and hot source unit
Three-way control valve one is logical to be connected with Cooling and Heat Source water tank, one it is logical be connected with Cooling and Heat Source water pump, it is another to lead to and the return water of cold and hot source unit
End is connected；
The test cell includes test water tank, test water pump, the test cell threeway tune being located at test pump entrance
Section valve and the test cell flowmeter for being located at test pump outlet；The test cell three-way control valve one is logical with testing water
Case is connected, one it is logical be connected with test water pump, it is another lead to be connected with the backwater end of test cell.
Preferably, the water outlet of the cold and hot source unit entering by the pipeline section where the first imported valve and the first pipeline
The mouth of a river is connected, and the water outlet of cold and hot source unit also passes through the water inlet phase of the pipeline section where the second imported valve and the second pipeline
Even；
The water outlet of the test cell is connected by the pipeline section where third imported valve with the water inlet of the first pipeline,
The water outlet of test cell is also connected by the pipeline section where the 4th imported valve with the water inlet of the second pipeline；
The backwater end phase that the water outlet of first circulation pipeline passes through the pipeline section where first outlet valve and cold and hot source unit
Even, the water outlet of first circulation pipeline is also connected by the pipeline section where second outlet valve with the backwater end of test cell；
The backwater end phase that the water outlet of second circulation pipeline passes through the pipeline section where third outlet valve and cold and hot source unit
Even, the water outlet of second circulation pipeline is also connected by the pipeline section where the 4th outlet valve with the backwater end of test cell.
Preferably, the Cooling and Heat Source water pump extracts thermostatted water from Cooling and Heat Source water tank, is adjusted by the threeway of Cooling and Heat Source water route
Valve regulation inflow temperature passes through Cooling and Heat Source unit stream flowmeter measurement circulating water flow；The test water pump is taken out from test water tank
Thermostatted water is taken, inflow temperature is adjusted by test cell three-way control valve, circulating water flow is measured by test cell flowmeter.
Preferably, the first temperature point and the first pressure difference measuring point, institute are equipped on the import and export pipeline of first pipeline
It states and second temperature measuring point and the second pressure difference measuring point is equipped on the import and export pipeline of the second pipeline.
Preferably, Cooling and Heat Source water tank electric heater is equipped in the Cooling and Heat Source water tank, test is equipped in the test water tank
Water tank electric heater；The cold and hot source unit and test cell by valve group with refrigerant circulation water route and company.
Preferably, the refrigerant circulation water route includes handpiece Water Chilling Units, refrigerant water pump and enters handpiece Water Chilling Units for adjusting
The refrigerant three-way control valve of inner cold water water temperature, the switching that the refrigerant circulation water route passes through valve group be respectively Cooling and Heat Source water tank or
Test the cold water source that water tank provides set temperature.
Preferably, electric heating tube is additionally provided in the cylinder, installation position of the electric heating tube in cylinder is higher than
The liquid level of refrigerant.
Preferably, the cylinder top is additionally provided with the pressure protection dress for ensuring that cylinder is run under the operating pressure of safety
It puts, safety valve and exhaust-valve.
Preferably, the cylinder is equipped with convenient for the liquid-sighting glass of observation internal heat situation and for headlamp light
The lens of entrance；The viewing section of observation refrigerant level is also useful on the cylinder.
The beneficial effects of the present invention are：
1), the present invention is only provided with a cylinder, be provided in cylinder along cylinder axial direction parallel arrangement the first pipeline and
Second pipeline, cold and hot matchmaker's unit and test cell are additionally provided on the outside of cylinder, and the cold and hot source unit carries valve by two
Water inlet of the pipe section in parallel of door respectively with the first pipeline and the second pipeline is connected, and the test cell carries valve also by two
Water inlet of the pipe section in parallel of door respectively with the first pipeline and the second pipeline is connected；The water outlet of first pipeline is followed with first
Endless tube road is connected, first circulation pipeline by two with valvular pipe section in parallel respectively with the backwater end of cold and hot matchmaker's unit and survey
The backwater end of examination unit is connected；The water outlet of second pipeline is connected with second circulation pipeline, second circulation pipeline also by
Two are connected with backwater end of the valvular pipe section in parallel respectively with the backwater end of cold and hot matchmaker's unit and test cell.It is practical to carry out
During performance test, for arbitrary pipeline select in the first pipeline or the second pipeline as the single tube that exchanges heat, another pipeline is as cold
Heat source tube then by the switching of valve, and passes through the temperature point of import and export on the first pipeline and the second pipeline, pressure difference survey
Point, the obtained measured value of flow measuring point calculate the heat exchange amount of heat exchange single tube jointly, that is, complete the performance of heat exchanging single tube
Experiment.
The present invention is by the ingehious design to pipe joint, under the experimental condition only there are one cylinder, you can easily
Switch cold and heat sources pipe and heat exchange single tube, and then realize the evaporation tube experiment of present apparatus heat exchanging single tube or condenser pipe experiment.This
Inventive structure is simple, substantially increases the efficiency of test job.
2) auxiliary heating cylinder inner refrigerant, is additionally provided in cylinder of the invention to the electric heating tube of hypersaturated state, just
In the case of often, the refrigerant heat of heat exchange single tube cooling is exactly the heat of electric heating tube and the sum of the heat of cold and heat sources pipe.This hair
The single tube condensing heat-exchange experiment of saturation state can only be carried out in the bright heat exchange single column run device compared to tradition, has widened dress significantly
The range of debugging condensing condition is put, broader test condition has been opened up for single tube condensation test.
3), by cold and heat sources pipe, (when the pipeline on the downside of inner barrel, i.e. the first pipeline is set refrigerant in the present invention
During for cold and heat sources pipe, the pipeline on the upside of inner barrel, i.e. the second pipeline are heat exchange single tube) saturated vapor is heated into, then pass through
Become superheated steam (superheated steam can not also be heated to be to be tested), the upward ascension of superheated steam after crossing electric heater for heating
When at the top of to cylinder, release heat is to the water in heat exchange single tube, and then refrigerant is cooled to saturated liquid, and liquid drops to cylinder
The cycle of refrigerant is completed in bottom.Entire heat transfer process carries out in single cylinder container, and cylinder volume very little, thermal capacity has
Limit is exchanged for heat test, it is meant that faster thermal balance, smaller leakage heat, smaller error, measuring accuracy has larger
It improves, the single tube that is heated or cooled for enabling the invention to carry out high-precision tiny flow quantity is tested；In addition, mono-tube design maximum journey
The heat-exchanging state for simulating practical case tube heat exchanger of degree more ensures the accuracy and reliability of the experimental rig.
4), the top of middle cylinder body of the present invention is provided with pressure protective device, safety valve and exhaust-valve, when the pressure in cylinder
During power exception, pressure protective device generally first passes through warning device and operating personnel is reminded to pay attention to.If pressure still persistently increases,
Pressure value reaches the working value of safety valve, then safety valve can rapid pressure release, play the role of protection.Exhaust-valve on cylinder, it is main
It is used to discharge the large quantity of air in cylinder, so that it is guaranteed that experiment is accurate, also can guarantee that pressure indicator is correct, further
Ensure the safe and reliable of cylinder.
5), cylinder of the present invention be equipped with convenient for observation internal heat situation liquid-sighting glass, and headlamp light pass through it is saturating
Mirror irradiation inner barrel, the heat exchange situation for facilitating observation inner barrel, the device are additionally provided with convenient for the sight of observation refrigerant level
Section is examined, the record and analysis, the reliability for data for greatly facilitating the practical heat exchange situation of testing crew heat exchanging single tube carry
For foundation.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structure diagram that heat exchanging single tube of the present invention carries out agglutination,cold test.
Fig. 3 is the structure diagram that heat exchanging single tube of the present invention is evaporated experiment.
Fig. 4 is the schematic diagram of Fig. 2 cylinder external structures.
Fig. 5 a, 5b, 5c, 5d are the side view schematic diagram of Fig. 2.
Fig. 6 is traditional heat exchange single column run device.
The meaning of label symbol is as follows in figure：
1- stents
2- cylinder 20- pressure protective device 21- safety valve 22- exhaust-valve 23- liquid-sighting glass
24- lens 25- viewing sections
The 4th imported valve 30b- third imported valves of the first pipelines of 3- 30a-
The 4th outlet valve 31b- third outlet valves of 31a-
The cold and hot source unit 40- Cooling and Heat Sources water tank 41- Cooling and Heat Source water pumps of 4-
The cold and hot source unit three-way control valve 400- Cooling and Heat Sources water tank electric heaters of 42-
43- Cooling and Heat Source unit stream gauge 44- the first temperature point 45- the first pressure difference measuring points
5- heat exchange single tube 50a- the second imported valve the first imported valves of 50b-
51a- second outlet valve 51b- first outlet valves
6- test cells 60- test water tank 600- test water tank electric heaters
61- tests water pump 62- test cell three-way control valve 63- test cell flowmeters
64- second temperature measuring point 65- the second pressure difference measuring points
7- refrigerants
8- refrigerant circulations water route 80- handpiece Water Chilling Units 81- refrigerant water pump 82- refrigerant three-way control valves
9- electric heating tubes
10- inner barrel temperature points
A- first circulation pipeline B- second circulation pipelines
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of all working condition high precision heat exchange single tube performance test apparatus, the seal shape including fixed setting
Cylinder 2 is also filled with refrigerant 7 in the cylinder 2,3 He of the first pipeline along cylinder axial arranging is provided in the cylinder 2
Second pipeline 5,3 and second pipeline 5 of the first pipeline are removably mounted on cylinder 2, the first pipeline 3 and the second pipeline 5
Both ends stretch out in the outside of cylinder 2, and first pipeline, 3 and second pipeline 5 is separately positioned on up and down the two of cylinder 2
Side；
The present apparatus further includes the cold and hot source unit 4 being arranged on the outside of cylinder and test cell 6.
The cold and hot source unit 4 includes Cooling and Heat Source water tank 40, Cooling and Heat Source water pump 41, is located at 41 inlet of Cooling and Heat Source water pump
Cold and hot source unit three-way control valve 42 and the Cooling and Heat Source unit stream gauge 43 for being located at 41 exit of Cooling and Heat Source water pump；It is described cold and hot
Source unit three-way control valve 42 1 is logical to be connected with Cooling and Heat Source water tank 40, and one leads to and is connected with Cooling and Heat Source water pump 41, it is another lead to it is cold and hot
The backwater end of source unit 4 is connected.The water outlet of the cold and hot source unit 4 passes through the pipeline section where the first imported valve 50b and
The water inlet of one pipeline 3 is connected, and the water outlet of cold and hot source unit 4 also passes through the pipeline section and second where the second imported valve 50a
The water inlet of pipeline 5 is connected.
The test cell 6 includes test water tank 60, test water pump 61, the test cell for being located at 61 inlet of test water pump
Three-way control valve 62 and the test cell flowmeter 63 for being located at 61 exit of test water pump；The test cell three-way control valve
62 1 it is logical be connected with test water tank 60, one it is logical be connected with testing water pump 61, it is another lead to be connected with the backwater end of test cell 6.Institute
The water outlet for stating test cell 6 is connected by the pipeline section where third imported valve 30b with the water inlet of the first pipeline 3, test
The water outlet of unit 6 is also connected by the pipeline section where the 4th imported valve 30a with the water inlet of the second pipeline 5.
It can be obtained by Fig. 1：The pipeline section where pipeline section and the second imported valve 50a and townhouse where first imported valve 50b
Cloth；The pipeline section arranged in parallel where pipeline section and the 4th imported valve 30a where third imported valve 30b；First import
Pipeline section where valve 50b and the water inlet phase with the first pipeline 3 after the pipeline section arranged in parallel where third imported valve 30b
Even, it is managed after the pipeline section arranged in parallel where pipeline section and the 4th imported valve 30a where the second imported valve 50a with second
The water inlet on road 5 is connected.
The water outlet of first pipeline 3 is connected with the water inlet end of first circulation pipeline A, and first circulation pipeline A's goes out
Water end (W.E.) is in parallel and be connected with backwater end of the valvular pipeline section respectively with cold and hot source unit 4 and test cell 6 by two
Backwater end logical, i.e., that the water outlet of first circulation pipeline A passes through the pipeline section where first outlet valve 51b and cold and hot source unit 4
It is connected, the water outlet of first circulation pipeline A also passes through the backwater end of the pipeline section where second outlet valve 51a and test cell 6
It is connected.
The water outlet of second pipeline 5 is connected with the water inlet end of second circulation pipeline B, and second circulation pipeline B's goes out
Water end (W.E.) is in parallel and be connected with backwater end of the valvular pipeline section respectively with cold and hot source unit 4 and test cell 6 by two
Backwater end logical, i.e., that the water outlet of second circulation pipeline B passes through the pipeline section where third outlet valve 31b and cold and hot source unit 4
It is connected, the water outlet of second circulation pipeline B also passes through the backwater end of the pipeline section where the 4th outlet valve 31a and test cell 6
It is connected.
The Cooling and Heat Source water pump 41 extracts thermostatted water from Cooling and Heat Source water tank 40, passes through Cooling and Heat Source water route three-way control valve 42
Inflow temperature is adjusted, circulating water flow is measured by Cooling and Heat Source unit stream gauge 43；The water pump 61 of testing is from test water tank 60
Middle extraction thermostatted water adjusts inflow temperature by test cell three-way control valve 62, is followed by the measurement of test cell flowmeter 63
Ring water flow.
The first temperature point 44 and the first pressure difference measuring point 45 are equipped on the import and export pipeline of first pipeline 3, it is described
64 and second pressure difference measuring point 65 of second temperature measuring point is equipped on the import and export pipeline of second pipeline 5.
Cooling and Heat Source water tank electric heater 400 is equipped in the Cooling and Heat Source water tank 40, test is equipped in the test water tank 60
Water tank electric heater 600；The cold and hot source unit 4 and test cell 6 by valve group with refrigerant circulation water route 8 and even.
The refrigerant circulation water route 8 includes handpiece Water Chilling Units 80, refrigerant water pump 81 and enters handpiece Water Chilling Units 80 for adjusting
The refrigerant three-way control valve 82 of inner cold water water temperature, the switching that the refrigerant circulation water route 8 passes through valve group are respectively Cooling and Heat Source water
Case 40 or test water tank 60 provide the cold water source of set temperature.
When carrying out agglutination,cold test, the switching connection mode of the valve group in whole device is as shown in Fig. 2, when being evaporated
During experiment, the switching connection mode of the valve group in whole device is as shown in Figure 3.
Electric heating tube 9 is additionally provided in the cylinder 2, installation position of the electric heating tube 9 in cylinder 2 is higher than refrigeration
The liquid level of agent 7.2 top of cylinder is additionally provided with the pressure protective device for ensuring that cylinder 2 is run under the operating pressure of safety
20th, safety valve 21 and exhaust-valve 22.
The cylinder 2 is equipped with convenient for the liquid-sighting glass 23 of observation internal heat situation and enters for headlamp light
Lens 24；The viewing section 25 of observation 7 liquid level of refrigerant is also useful on the cylinder 2.
It is further described the course of work of the present apparatus below in conjunction with the accompanying drawings.
Agglutination,cold test
Pipeline jointing construction form during agglutination,cold test is as shown in Fig. 2, the first pipeline 3 is cold and heat sources pipe at this time, and second
Pipeline 5 is heat exchange single tube.Second imported valve 50a, third imported valve 30b, second outlet valve 51a, third outlet valve
31b is in closed state, the first imported valve 50b, the 4th imported valve 30a, first outlet valve 51b, the 4th outlet valve
Door 31a is in opening.
Cooling and Heat Source water pump 41 extracts 69 DEG C of thermostatted water from Cooling and Heat Source water tank 40 first, passes through cold and hot source unit threeway tune
Section valve 42 mixes the 61 DEG C of water come out from first outlet valve 51b, adjusts and enters the first pipeline 3 by the first imported valve 50b
Water temperature to 65 DEG C.The first pipeline 3 being connect with cold and hot source unit 4 heated the refrigerant 7 in cylinder 2, make to have submerged first
The refrigerant 7 of pipeline 3 is evaporated to saturated vapor, if necessary to adjust operating mode to overheated gas, can be assisted by electric heating tube 9
Steam is heated, steam ascension to 2 top of cylinder is cooled down by the second pipeline 5 that top single tube to be tested is formed, is then condensed into liquid
Drop, falls to 2 bottom of cylinder, and so far refrigerant 7 completes the cycle of a heat exchange, the first pipeline 3 that heat is absorbed by refrigerant 7
Interior water then flows back to Cooling and Heat Source water tank 40 by first circulation pipeline A and first outlet valve 51b.
In the cold and hot source unit 4 of first pipeline 3 connection, Cooling and Heat Source water flow is measured by Cooling and Heat Source unit stream gauge 43,
The water temperature difference of disengaging cold and heat sources pipe 3 is measured into and out of the first temperature point 44 at nozzle by the first pipeline 3, so as to calculate the
The heat exchange amount of one pipeline 3.Computational methods are exactly the formula of common Q=cm △ t, wherein alphabetical meaning：Q, heat exchange amount；C,
The specific heat capacity of water；M, water flow；△ t flow through the front and rear temperature gap of heat exchanger tube (the first pipeline 3 or the second pipeline 5) heat exchange；
At the same time, it as shown in Fig. 2, switching handpiece Water Chilling Units make handpiece Water Chilling Units 80 provide low-temperature receiver for test water tank 60, adjusts
60 water temperature of water tank is tested to 27 DEG C of constant temperature；Then, the test water pump 61 in test cell 6 extracts 27 DEG C from test water tank 60
Thermostatted water mixes 35 DEG C of the water come out from the 4th outlet valve 31a by testing water route three-way control valve 62, adjusts by the
The water temperature that four imported valve 30a enter the second pipeline 5 is 30 DEG C, and flowing water is freezed in having taken away cylinder 2 in the second pipeline 5
The heat of 7 steam of agent passes sequentially through second circulation pipeline B and the 4th outlet valve 31a and flows back to test water tank 60 after heating.
In the test cell 6 of second pipeline 5 connection, water flow is measured by test cell flowmeter 63, passes through test the
Two temperature points 64 measure the water temperature difference of disengaging heat exchange single tube 5, so as to calculate the heat exchange amount of the second pipeline 5.Under normal circumstances,
7 heat of refrigerant of two pipelines 5 cooling is exactly the heat of electric heating tube 9 and the sum of the heat of the first pipeline 3.
Evaporation test
Pipeline jointing construction form during evaporation test is as shown in figure 3, the first pipeline 3 is heat exchange single tube at this time, and second
Pipeline 5 is cold and heat sources pipe.First imported valve 50b, the 4th imported valve 30a, first outlet valve 51b, the 4th outlet valve
31a is in closed state, the second imported valve 50a, third imported valve 30b, second outlet valve 51a, third outlet valve
Door 31b is in opening.
Cooling and Heat Source water pump 41 extracts 2 DEG C of thermostatted water from Cooling and Heat Source water tank 40 first, passes through cold and hot source unit threeway tune
Section valve 42 mixes the 6.5 DEG C of water come out from third outlet valve 31b, adjusts and enters the second pipeline 5 by the second imported valve 50a
Water temperature to 5.5 DEG C.The second pipeline 5 being connected in cold and hot source unit 4 cools the refrigerant 7 in cylinder 2, makes by the first pipe
The refrigerant 7 that road 3 is heated is condensed into saturation refrigerant liquid.The water in the second pipeline 5 after heating passes through second circulation pipeline B
Cooling and Heat Source water tank 40 is flowed back to third outlet valve 31b.
First pipeline 3 is immersed in refrigerant 7, and the inflow temperature of the first pipeline 3 is 12 DEG C, and the first pipeline 3 will refrigeration
7 heating evaporation of agent, the steam ascension of refrigerant 7 are cooled down by second pipeline 5 on top to 2 top of cylinder, are then condensed into liquid
Drop, falls to 2 bottom of cylinder, and so far refrigerant 7 completes the cycle of a heat exchange.
In the cold and hot source unit 4 of second pipeline 5 connection, Cooling and Heat Source water flow is measured by Cooling and Heat Source unit stream gauge 43,
The water temperature difference of the second pipeline 5 of disengaging is measured by the second temperature measuring point 64 at 5 inlet and outlet nozzle of the second pipeline, so as to calculate second
The heat exchange amount of pipeline 5.Computational methods are exactly the formula of common Q=cm △ t, wherein alphabetical meaning：Q, heat exchange amount；C, water
Specific heat capacity；M, water flow；△ t flow through the front and rear temperature gap of heat exchanger tube (the second pipeline 5 or the first pipeline 3) heat exchange；
I.e. as shown in figure 3, switching handpiece Water Chilling Units make handpiece Water Chilling Units 80 provide low-temperature receiver, Cooling and Heat Source water tank for Cooling and Heat Source water tank 40
40 water temperatures are to 2 DEG C of constant temperature；Then, Cooling and Heat Source water pump 41 extracts 2 DEG C of thermostatted water from Cooling and Heat Source water tank 40, passes through Cooling and Heat Source list
First three-way control valve 42 mixes 6.5 DEG C of the water come out from the second pipeline 5 i.e. cold and heat sources pipe, is adjusted into cold and heat sources pipe
5.5 DEG C of water, flowing water cools the steam of refrigerant 7 in cylinder 2 in cold and heat sources pipe, and Cooling and Heat Source water is flowed back to after water heating
Case 40.
In the test cell 6 of first pipeline 3 connection, water flow is measured by test cell flowmeter 63, passes through test the
One temperature point 44 measures the water temperature difference of the first pipeline 3 of disengaging, so as to calculate the heat exchange amount of the first pipeline 3.Under normal circumstances,
7 heat of refrigerant of one pipeline 3 heating is exactly the heat exchange amount of the second pipeline 5.
During the test, the first pressure difference measuring point 45, the second pressure difference measuring point 65 measure the first pipeline 3, the second pipeline 5 respectively
Water resistance, the application for single tube provides the test basis in terms of on-way resistance.Inside Cooling and Heat Source water tank 40 and test water tank 60
It is useful for providing the Cooling and Heat Source water tank electric heater 400 of the water tank heat and test water tank electric heater 600 respectively.Have one simultaneously
Platform handpiece Water Chilling Units 80, by the switching of valve group, handpiece Water Chilling Units 80 can be that Cooling and Heat Source water tank 40 or test water tank 60 provide respectively
Low-temperature receiver.There are refrigerant three-way control valve 82 and refrigerant water pump 81 on refrigerant circulation water route 8.Refrigerant three-way control valve 82 is adjusted into cold
The water temperature of water dispenser group 80 is in rational range.
2 top of cylinder is provided with pressure protective device 20, safety valve 21 and exhaust-valve 22, for ensuring that cylinder 2 is being pacified
It is run under full operating pressure, when the pressure anomaly in cylinder 2, pressure protective device 20 generally first passes through warning device prompting
Operating personnel pay attention to.If pressure still persistently increases, pressure value reaches the working value of safety valve 21, then safety valve 21 can be rapid
Protection is played the role of in pressure release.Exhaust-valve 22 on cylinder is mainly used for discharging the large quantity of air in cylinder 2, it is ensured that be not free
Gas is mixed into internal refrigerant 7.
Above the cylinder 2 and side is useful for the liquid-sighting glass 23 of observation internal heat situation, and headlamp light passes through saturating
Mirror 24 is irradiated inside cylinder 2, facilitates the heat exchange situation inside observation.The liquid of 25 personal observations' refrigerant 7 easy to operation of viewing section
Position, it is ensured that refrigerant 7 is not contacted with electric heating tube 9.
It should be noted that the heating amount that the electric heating tube 9 in the present embodiment middle cylinder body 2 reheats refrigerant 7
Original papers can be waited to carry out step-less adjustment by silicon-controlled, pass through the mistake for the refrigerant 7 that inner barrel temperature point 10 determines to need
Temperature.Compared to the single tube condensing heat-exchange experiment that saturation state can only be carried out in tradition heat exchange single column run device, widen significantly
Broader test condition has been opened up in the range of device debugging condensing condition, the performance test for the single tube that exchanges heat.
Cylinder 2 in the present invention is simple in structure, and volume very little, thermal capacity is limited, so itself and extraneous leaking heat are seldom,
So as to provide good prerequisite for the test of small heat exchange amount.It is demonstrated experimentally that by taking refrigerant R22 as an example, can stablize high-precision
Spend the single tube heat exchange amount about 1.2kW measured.
As shown in Fig. 5 a, 5b, 5c, 5d, the structure type of the first pipeline 3 and the second pipeline 5 can there are many, wherein first
The structure type of 3 and second pipeline 5 of pipeline may be the same or different.
If in conclusion the experimental rig of the refrigeration air-conditioner product using the present invention, condensation list can be covered by adjusting operating mode
The saturation of pipe and overheat heat-exchanging state, lower limit heat exchange amount minimum can arrive 1.2kW or so, comprehensive other factors, it is demonstrated experimentally that changing
The adjustable span of heat has reached 30 times or so.The applicability of experimental rig can be greatly promoted, is also reduced into indirectly
This input.
Claims (10)
- The single tube performance test apparatus 1. a kind of all working condition high precision exchanges heat including cylinder (2), is also filled in the cylinder (2) Refrigerant (7), it is characterised in that：It is provided in the cylinder (2) along the first pipeline (3) of cylinder axial arranging and the second pipeline (5), first pipeline (3) and the second pipeline (5) are removably mounted on cylinder (2), the first pipeline (3) and the second pipeline (5) both ends are stretched out in the outside of cylinder (2), and first pipeline (3) and the second pipeline (5) are separately positioned on cylinder (2) both sides up and down；The present apparatus further includes the cold and hot source unit (4) being arranged on the outside of cylinder and test cell (6), the cold and hot source unit (4) Water outlet it is in parallel and enter water with the first pipeline (3) and the second pipeline (5) respectively with valvular pipeline section by two Mouth is connected；The water outlet of the test cell (6) also by two it is in parallel and with valvular pipeline section respectively with the first pipe Road (3) is connected with the water inlet of the second pipeline (5)；The water outlet of first pipeline (3) is connected with the water inlet end of first circulation pipeline (A), first circulation pipeline (A) Water outlet by two it is in parallel and with valvular pipeline section respectively with cold and hot source unit (4) and the return water of test cell (6) End is connected；The water outlet of second pipeline (5) is connected with the water inlet end of second circulation pipeline (B), second circulation pipeline (B) water outlet by two it is in parallel and with valvular pipeline section respectively with cold and hot source unit (4) and test cell (6) Backwater end is connected.
- The single tube performance test apparatus 2. all working condition high precision according to claim 1 exchanges heat, it is characterised in that：It is described cold and hot Source unit (4) includes Cooling and Heat Source water tank (40), Cooling and Heat Source water pump (41), the Cooling and Heat Source list for being located at Cooling and Heat Source water pump (41) inlet First three-way control valve (42) and the Cooling and Heat Source unit stream gauge (43) for being located at Cooling and Heat Source water pump (41) exit；The Cooling and Heat Source Unit three-way control valve (42) one is logical to be connected with Cooling and Heat Source water tank (40), one it is logical be connected with Cooling and Heat Source water pump (41), it is another lead to and The backwater end of cold and hot source unit (4) is connected；The test cell (6) includes test water tank (60), test water pump (61), the test for being located at test water pump (61) inlet Unit three-way control valve (62) and the test cell flowmeter (63) for being located at test water pump (61) exit；The test cell Three-way control valve (62) one is logical to be connected with test water tank (60), one it is logical be connected with testing water pump (61), it is another to lead to and test cell (6) backwater end is connected.
- The single tube performance test apparatus 3. all working condition high precision according to claim 1 or 2 exchanges heat, it is characterised in that：It is described The water inlet phase that the water outlet of cold and hot source unit (4) passes through the pipeline section where the first imported valve (50b) and the first pipeline (3) Even, the water outlet of cold and hot source unit (4) also enters water by the pipeline section where the second imported valve (50a) and the second pipeline (5) Mouth is connected；The water outlet of the test cell (6) enters water by the pipeline section where third imported valve (30b) and the first pipeline (3) Mouthful it is connected, the water outlet of test cell (6) also entering by the pipeline section where the 4th imported valve (30a) and the second pipeline (5) The mouth of a river is connected；Time that the water outlet of first circulation pipeline (A) passes through the pipeline section where first outlet valve (51b) and cold and hot source unit (4) Water end (W.E.) is connected, and the water outlet of first circulation pipeline (A) also passes through the pipeline section and test cell where second outlet valve (51a) (6) backwater end is connected；Time that the water outlet of second circulation pipeline (B) passes through the pipeline section where third outlet valve (31b) and cold and hot source unit (4) Water end (W.E.) is connected, and the water outlet of second circulation pipeline (B) also passes through the pipeline section and test cell where the 4th outlet valve (31a) (6) backwater end is connected.
- The single tube performance test apparatus 4. all working condition high precision according to claim 2 exchanges heat, it is characterised in that：It is described cold and hot Source water pump (41) extracts thermostatted water from Cooling and Heat Source water tank (40), is adjusted by cold and hot source unit three-way control valve (42) into water temperature Degree measures circulating water flow by Cooling and Heat Source unit stream gauge (43)；The test water pump (61) is taken out from test water tank (60) Thermostatted water is taken, inflow temperature is adjusted by test cell three-way control valve (62), is followed by test cell flowmeter (63) measurement Ring water flow.
- The single tube performance test apparatus 5. all working condition high precision according to claim 2 exchanges heat, it is characterised in that：Described first The first temperature point (44) and the first pressure difference measuring point (45), second pipeline are equipped on the import and export pipeline of pipeline (3) (5) second temperature measuring point (64) and the second pressure difference measuring point (65) are equipped on import and export pipeline.
- The single tube performance test apparatus 6. all working condition high precision according to claim 4 or 5 exchanges heat, it is characterised in that：It is described Cooling and Heat Source water tank electric heater (400) is equipped in Cooling and Heat Source water tank (40), test water tank electricity is equipped in the test water tank (60) Heater (600)；The cold and hot source unit (4) and test cell (6) by valve group with refrigerant circulation water route (8) and even.
- The single tube performance test apparatus 7. all working condition high precision according to claim 6 exchanges heat, it is characterised in that：The refrigerant Circulation waterway (8) enters handpiece Water Chilling Units (80) inner cold water water including handpiece Water Chilling Units (80), refrigerant water pump (81) and for adjusting The refrigerant three-way control valve (82) of temperature, the switching that the refrigerant circulation water route (8) passes through valve group is respectively Cooling and Heat Source water tank (40) or test water tank (60) provide set temperature cold water source.
- The single tube performance test apparatus 8. all working condition high precision according to claim 1 exchanges heat, it is characterised in that：The cylinder (2) electric heating tube (9) is additionally provided in, installation position of the electric heating tube (9) in cylinder (2) is higher than refrigerant (7) Liquid level.
- The single tube performance test apparatus 9. all working condition high precision according to claim 1 exchanges heat, it is characterised in that：The cylinder (2) top is additionally provided with the pressure protective device (20) for ensuring cylinder (2) and being run under the operating pressure of safety, safety valve (21) And exhaust-valve (22).
- The single tube performance test apparatus 10. all working condition high precision according to claim 1 exchanges heat, it is characterised in that：The cylinder Body (2) is equipped with the liquid-sighting glass (23) convenient for observation internal heat situation and the lens (24) for the entrance of headlamp light； The viewing section (25) of observation refrigerant (7) liquid level is also useful on the cylinder (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021575.0A CN105606644B (en) | 2016-01-11 | 2016-01-11 | All working condition high precision heat exchange single tube performance test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021575.0A CN105606644B (en) | 2016-01-11 | 2016-01-11 | All working condition high precision heat exchange single tube performance test apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105606644A CN105606644A (en) | 2016-05-25 |
| CN105606644B true CN105606644B (en) | 2018-06-29 |
Family
ID=55986747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610021575.0A Active CN105606644B (en) | 2016-01-11 | 2016-01-11 | All working condition high precision heat exchange single tube performance test apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105606644B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4729667A (en) * | 1985-06-17 | 1988-03-08 | Bbc Brown, Boveri & Company, Limited | Process and device for the determination of the thermal resistance of contaminated heat exchange elements of thermodynamic apparatuses, in particular of power station condensers |
| CN101446524A (en) * | 2008-11-21 | 2009-06-03 | 合肥通用机械研究院 | Heat exchanger performance testing device for air conditioning |
| CN102032624A (en) * | 2010-11-26 | 2011-04-27 | 合肥通用机械研究院 | Performance test device for evaporative air conditioner |
| CN202101956U (en) * | 2011-06-14 | 2012-01-04 | 南京工业大学 | Single heat exchange tube testing device |
| CN103645207A (en) * | 2013-11-25 | 2014-03-19 | 乐金空调(山东)有限公司 | Heat exchange performance testing device for heat exchange tubes |
| CN103808757A (en) * | 2014-03-05 | 2014-05-21 | 上海理工大学 | Experimental table for testing heat exchange performance of single tube |
-
2016
- 2016-01-11 CN CN201610021575.0A patent/CN105606644B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4729667A (en) * | 1985-06-17 | 1988-03-08 | Bbc Brown, Boveri & Company, Limited | Process and device for the determination of the thermal resistance of contaminated heat exchange elements of thermodynamic apparatuses, in particular of power station condensers |
| CN101446524A (en) * | 2008-11-21 | 2009-06-03 | 合肥通用机械研究院 | Heat exchanger performance testing device for air conditioning |
| CN102032624A (en) * | 2010-11-26 | 2011-04-27 | 合肥通用机械研究院 | Performance test device for evaporative air conditioner |
| CN202101956U (en) * | 2011-06-14 | 2012-01-04 | 南京工业大学 | Single heat exchange tube testing device |
| CN103645207A (en) * | 2013-11-25 | 2014-03-19 | 乐金空调(山东)有限公司 | Heat exchange performance testing device for heat exchange tubes |
| CN103808757A (en) * | 2014-03-05 | 2014-05-21 | 上海理工大学 | Experimental table for testing heat exchange performance of single tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105606644A (en) | 2016-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103196945B (en) | Condensation heat-transfer experiment device capable of realizing coupling of natural circulation and forced circulation | |
| CN105372082B (en) | A kind of energy-efficient environment-friendly multifunctional intellectuality heat exchanger performance test system | |
| CN101299000B (en) | Heat exchange tester of ground source heat pump underground heat exchanger | |
| CN1987440A (en) | Combining method for multiple thermotechnical complex performance detection test | |
| CN104297291B (en) | A kind of measure the experimental provision of flow boiling and heat transfer coefficient in refrigerant pipe | |
| CN108593328A (en) | A kind of convenient refrigerator heat exchanger performance test system of flow-rate adjustment | |
| CN110763497B (en) | Laboratory test system and method suitable for air source heat pump hot water system | |
| CN103592142A (en) | System for testing heat transfer and resistance characteristics of large-size generating equipment heat exchanger | |
| CN108956685A (en) | A kind of condensation visual experimental apparatus of steam containing fixed gas of object-oriented | |
| CN105954184B (en) | A kind of flue gas low-temperature corrosion experimental device that realizing multifactor quantitatively regulating and controlling and experimental method | |
| CN206321404U (en) | A kind of boiling heat exchanger performance testing device | |
| CN109001249A (en) | A kind of device for evaluating augmentation of heat transfer pipe in-tube condensation characteristic | |
| CN109521052A (en) | A kind of change tube bank arrangement local heat transfer device | |
| Song et al. | Experimental investigation on closed-type heating tower using glycerol solution | |
| CN105866388B (en) | For studying the measuring device and its measurement method of refrigerating agent containing oil characteristic | |
| CN104390664B (en) | Biphase gas and liquid flow phase-change heat-exchange blood circulation | |
| CN105606644B (en) | All working condition high precision heat exchange single tube performance test apparatus | |
| CN206321436U (en) | A kind of performance testing device of condensing heat exchanger | |
| CN208350689U (en) | A kind of device for evaluating augmentation of heat transfer pipe in-tube condensation characteristic | |
| CN107246975A (en) | A kind of flow refrigerator with adjustable heat exchanger performance test system | |
| CN105699060B (en) | Exchange heat single tube performance test apparatus | |
| CN104374590B (en) | A kind of ability measurement device of four-way change-over valve | |
| CN206930458U (en) | A kind of heat exchanger oil-water test platform | |
| CN206876310U (en) | A kind of cryogenic fluid transfer pipeline leaks heat test device | |
| CN108151918A (en) | A kind of calorimeter endurance test apparatus and its test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230031 No. 888 Changjiang West Road, Shushan District, Hefei, Anhui. Co-patentee after: Hefei General Environment Control Technology Co., Ltd. Patentee after: Hefei General Machinery Research Institute Co., Ltd. Address before: 230031 No. 888 Changjiang West Road, Shushan District, Hefei, Anhui. Co-patentee before: Hefei General Environment Control Technology Co., Ltd. Patentee before: Hefei Universal Machinery Inst. |
|
| CP01 | Change in the name or title of a patent holder |