CN210322734U - Urban outdoor green road cold plate testing device - Google Patents
Urban outdoor green road cold plate testing device Download PDFInfo
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- CN210322734U CN210322734U CN201920902176.4U CN201920902176U CN210322734U CN 210322734 U CN210322734 U CN 210322734U CN 201920902176 U CN201920902176 U CN 201920902176U CN 210322734 U CN210322734 U CN 210322734U
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Abstract
The utility model discloses an urban outdoor green road cold plate testing device, which comprises a testing module internally paved with a substrate layer and a cold plate, wherein the cold plate comprises a water inlet end and a water outlet end for heat exchange, and a rainwater collecting device for collecting surface runoff rainwater and seepage runoff rainwater of the substrate layer is arranged below the testing module; a drainage detection device for detecting the rainwater seepage runoff of the substrate layer is arranged in the rainwater collection device; the rainfall simulation device is arranged above the test module and connected with the water storage tank to simulate rainfall, and the rainfall simulation device can adjust rainfall intensity and rainfall; and the temperature detection device is arranged at the water inlet end and the water outlet end of each substrate layer and each cold plate to detect the temperature. The device simplifies the test of the water storage and drainage performance of the actual outdoor green channel, realizes equivalent green channel structure by arranging the test module, and provides prediction and data reference for actual engineering application.
Description
Technical Field
The utility model relates to a city construction technical field, more specifically say, relate to an outdoor green way cold drawing testing arrangement in city.
Background
Along with the continuous development of urbanization, the area of an urban green land is reduced, the area of an impermeable underlying surface is increased, natural ecology is damaged to a certain extent, and an urban heat island effect and flood disasters are inevitably caused. In recent years, drought and flood disasters frequently occur in China, particularly in southern areas, and the conditions that the proportion of hard and waterproof ground of urban roads is high, the construction standard of drainage pipe network facilities is low, actual construction is unreasonable and not in place, and water is required to be flooded in case of rain are mainly shown in rainy season.
The urban outdoor green road cold plate is characterized in that a cooling cold plate is added on the green road surface layer on the basis of the original green road construction, rainwater or water in rivers and lakes in natural environment flows through the cold plate, and cold water circulation cooling is carried out by utilizing the elevation difference of natural terrain or the pressure rise of a water pump so as to achieve the purposes of utilizing sponge urban rainwater and cooling by urban greenhouse effect. The application of the technology can increase the permeable rainwater area of the city, locally reduce the outdoor temperature of the city and improve the urban greening environment. The urban green road with the pervious concrete as the surface layer can reduce storm runoff, improve underground water quality, relieve heat island effect, reduce traffic noise and improve road surface anti-skid performance. However, quantitative and qualitative analysis and test cannot be performed on the outdoor green channel cold plate of the city in the prior art so as to provide prediction and data reference for practical engineering application.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an outdoor green cold drawing testing arrangement in city to carry out quantitative and qualitative analysis, provide data reference for actual engineering to green cold drawing.
In order to achieve the first object, the present invention provides the following technical solutions:
an outdoor green channel cold drawing testing arrangement in city includes:
the test module is internally paved with a substrate layer and a cold plate, the cold plate comprises a water inlet end and a water outlet end for heat exchange, and a rainwater collecting device for collecting surface runoff rainwater and seepage runoff rainwater of the substrate layer is arranged below the test module;
a drainage detection device for detecting rainwater seepage runoff of the substrate layer is arranged in the rainwater collection device; locate test module's top and be connected the rainfall analogue means who is used for the rainfall simulation with the water storage box, rainfall analogue means can adjust rainfall intensity and rainfall.
Optionally, the method further comprises:
the temperature detection device is arranged on each substrate layer and the water inlet end and the water outlet end of the cold plate to detect the temperature;
the water outlet end of the rainwater collecting device is connected with the water inlet end of the cold plate through a cold plate water inlet pipeline, a flow speed adjusting device used for adjusting the water flow speed is arranged on the cold plate water inlet pipeline, and the water outlet end of the cold plate is connected with the rainwater collecting device for collection.
Optionally, the test module includes from top to bottom set gradually green road surface layer, cold drawing, geotechnological cloth layer, fine gravel layer, geotechnological cloth layer, the grid layer of weighing, the cold drawing is buried underground in green road surface layer, green road surface layer specifically is pervious concrete layer or grass planting soil horizon.
Optionally, the rainfall simulation device includes water storage tank, water pump, with the inlet channel that the water pump is connected, locate the rainfall shower nozzle of test module top, be equipped with check valve and float flowmeter on the inlet channel in order to adjust rainfall intensity and rainfall, the number of rainfall shower nozzle is a plurality of, and is a plurality of the rainfall shower nozzle is in the top of test module evenly sets up.
Optionally, the flow rate regulating device is embodied as a check valve and a float flow meter.
Optionally, the water discharge amount detection device is embodied as a liquid level sensor.
Optionally, the temperature detection device is specifically an antirust thermocouple sensor.
Optionally, the test module further comprises a test cavity for laying the substrate layer and the cold plate, and an insulating layer for preventing heat from spreading laterally is arranged outside the test cavity.
Optionally, the cold plate comprises a plurality of cold water conduits arranged in parallel.
Optionally, a drainage pipeline for draining when accumulated water is excessive is arranged at the preset height of the rainwater collecting device.
The utility model provides an outdoor green road cold drawing testing arrangement in city, including the test module of laying matrix layer and cold drawing inside, the cold drawing includes water inlet end and water outlet end in order to carry out the heat transfer, the below of test module is equipped with the rainwater collection device that is used for collecting the surface runoff rainwater and the infiltration runoff rainwater of matrix layer; a drainage detection device for detecting the rainwater seepage runoff of the substrate layer is arranged in the rainwater collection device; the rainfall simulation device is arranged above the test module and connected with the water storage tank to simulate rainfall, and the rainfall simulation device can adjust rainfall intensity and rainfall; and the temperature detection device is arranged at the water inlet end and the water outlet end of each substrate layer and each cold plate to detect the temperature.
Use the utility model provides an outdoor green cold drawing testing arrangement in city, rainwater collection device can collect test module's rainwater infiltration, and detect rainwater infiltration runoff through displacement detection device, can simulate the outdoor green drawing in city through test module, the outdoor green drawing in quantitative and qualitative test analysis is at different rainfall intensity and rainfall time, different matrix layer types, hold the drainage ability under the natural environment factor, the device adopts the controllable mode of simulated rainfall, make test system avoid factor influences such as natural environment, make the experimental result more accurate, and compare test module permeable characteristic and green drawing cold drawing test module's rainwater stagnation mechanism under factors such as rainfall intensity and matrix layer, optimize and establish the mode. The device simplifies the test of the water storage and drainage performance of the outdoor green channel of the reagent, realizes equivalent green channel structure by arranging the test module, and provides prediction and data reference for practical engineering application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an outdoor green channel cold plate testing device in an urban area according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structural diagram of a testing apparatus provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a cold plate according to an embodiment of the present invention.
The drawings are numbered as follows:
the device comprises a temperature detection device 1, a photovoltaic direct-current water pump 2, a check valve 3, a float flowmeter 4, a water inlet end 5, a liquid level sensor 6, an angle steel bracket 7, a spray head 8, a water outlet end 9, a test module 10, a cold plate 11 and a water storage tank 12;
green road surface course 101, cold plate pipeline course 102, geotextile layer 103, fine gravel layer 104, grid layer 105, brick groove 106, heat preservation layer 107 and brick pool 108.
Detailed Description
The embodiment of the utility model discloses outdoor green cold drawing testing arrangement in city to carry out quantitative and qualitative analysis, for actual engineering provides the data reference green cold drawing.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of an outdoor urban green channel cold plate testing apparatus according to an embodiment of the present invention; fig. 2 is a schematic cross-sectional structural diagram of a testing apparatus provided in an embodiment of the present invention; fig. 3 is a schematic structural diagram of a cold plate according to an embodiment of the present invention.
In a specific embodiment, the utility model provides an outdoor green cold board 11 testing arrangement in city, including the inside test module 10 of laying matrix layer and cold board 11, test module 10 is preferably the rectangle cavity, test module 10 can adopt cement and waterproof agent to encapsulate, set up matrix layer and cold board 11 inside it, it can be understood that, cold board 11 sets up in the inside of matrix layer in order effectively to cool down the matrix layer, the matrix layer can include green layer and the structural layer of planting, wherein, the selection of green layer and the structural layer of planting can set up according to actual city construction needs.
The cold plate 11 comprises a water inlet end 5 and a water outlet end 9 for heat exchange, and a rainwater collecting device for collecting surface runoff rainwater and seepage runoff rainwater of the substrate layer is arranged below the test module 10; wherein, intake end 5 and water pump connection, the water pump can set up to photovoltaic direct current pump 2, and rainwater collection device can specifically be brick pond 108, and test module 10 sets up in the top in brick pond 108, and test module 10's bottom is the material constitution that permeates water, collects the excessive rainwater on matrix layer through rainwater collection device.
The rainwater collecting device is internally provided with a drainage quantity detecting device for detecting rainwater seepage runoff of the substrate layer; in one embodiment, the rainwater infiltration amount is collected by arranging a liquid level sensor 6 or a weighing device in the brick water pool 108, a rainfall simulation device is arranged above the test module 10 and connected with the water storage tank 12 to simulate rainfall, the rainfall simulation device and the water storage tank 12 can be connected through a water pump to pump out water flow, the rainfall simulation device is preferably fixed through an angle steel bracket 7, and the rainfall simulation device can adjust rainfall intensity and rainfall amount; if can set up the valve on the inlet line, the valve is the gate valve preferably, realizes the velocity of flow through the aperture that sets up the valve and adjusts and then realize rainfall intensity's regulation, realizes the regulation of rainfall through setting up the water pump and opening and stopping time.
The device can accurately test the water storage and drainage performance of the outdoor green channel module under the variables of rainfall intensity, rainfall duration, matrix layer type, outdoor environment temperature and humidity and the like.
Use the utility model provides an outdoor green cold drawing 11 testing arrangement in city, rainwater collection device can collect test module 10's rainwater infiltration, and detect rainwater infiltration runoff through displacement detection device, can simulate the outdoor green drawing in city through test module 10, the outdoor green drawing in city of quantitative qualitative test analysis is at different rainfall intensity and rainfall time, different matrix layer types, the drainage ability that holds under the natural environment factor, and through setting up temperature-detecting device 1 at each matrix layer, the cooling performance of test module 10 under different natural environment variables can simulate different matrix layers. The device adopts a rainfall simulation controllable mode, so that the test system is prevented from being influenced by factors such as natural environment and the like, the experimental result is more accurate, the water permeability characteristics of the test module 10 under the factors such as rainfall intensity, matrix layers and the like are compared with the rainwater retention mechanism of the green channel cold plate test module, and the construction mode is optimized. The device simplifies the test of the water storage and drainage and cooling performance of the outdoor green channel of the reagent, realizes an equivalent green channel structure by arranging the test module 10, and provides prediction and data reference for practical engineering application.
Specifically, the device also comprises a temperature detection device 1 which is arranged on the substrate layers and the water inlet end 5 and the water outlet end 9 of the cold plate 11 to detect the temperature. The temperature detection devices 1 are arranged on the substrate layers, so that the cooling performance of the test modules 10 on different substrate layers under different natural environment variables can be simulated. A plurality of temperature test points are arranged in each substrate layer to ensure that the temperature of the substrate layers is averaged, so that experimental errors are reduced, 50 temperature test points are preferably arranged, and of course, in other embodiments, the number of the temperature test points can be arranged according to actual needs, and this is only a preferred embodiment. The temperature detecting device 1 is preferably a temperature sensor, and further preferably an antirust thermocouple sensor, and the type and arrangement of the temperature sensor can refer to the prior art, which is not described herein again.
The water outlet end of the rainwater collecting device is connected with the water inlet end 5 of the cold plate 11 through a cold plate water inlet pipeline, a flow rate adjusting device for adjusting the water flow speed is arranged on the cold plate water inlet pipeline, and the water outlet end 9 of the cold plate 11 is connected with the rainwater collecting device for collection. From this setting to make the rainwater obtain cyclic utilization, the water economy resource adjusts cold water velocity of flow through velocity of flow adjusting device, and detects the 11 water-cooling condition of cold drawing, the cooling performance under the cold water velocity of flow variable of accurate test cold drawing 11. The flow rate regulating means are in particular a check valve 3 and a float flow meter 4, in other embodiments also other valves or flow meters may be provided, which here is only a preferred embodiment. The device passes through temperature-detecting device 1 and velocity of flow adjusting device, tests different velocity of flow variables, the cooling performance of cold drawing 11 under the different matrix layers.
Further, the test module 10 includes green road surface layer 101, cold plate 11, geotechnological cloth layer 103, thin rubble layer 104, geotechnological cloth layer 103, the grid layer 105 of weighing that sets gradually from top to bottom, and cold plate 11 buries underground in green road surface layer 101, and green road surface layer 101 specifically is pervious concrete layer or grass planting soil horizon.
Furthermore, a drainage pipeline for draining when accumulated water is excessive is arranged at the preset height of the rainwater collecting device.
In one embodiment, the test module 10 further comprises a test chamber for laying the substrate layer and the cold plate 11, and an insulating layer 107 for preventing heat from spreading laterally is disposed outside the test chamber. The testing cavity is a water pool and a brick groove 106 which are cut by cement and blue bricks, the specification is 2030mm multiplied by 830mm multiplied by 1060mm, the thickness of the brick of the water pool part is 105mm, the thickness of the brick groove 106 part is 45mm, a water drainage pipe valve is respectively arranged at the bottom plate and the 380mm height position, so that the rainwater collecting device can be drained through the water drainage pipe valve when needing to be drained, a water inlet of D50mm and a measuring port of a liquid level sensor 6 are arranged at the 750mm height position, so that the rainwater collecting device can drain water when the water storage capacity is low, the normal running of the test is ensured, a DN20mm cold plate pipe layer water inlet and outlet is respectively arranged at the 1000mm height position, the cold plate pipe can be a DN20mm metal pipe or a PVC pipe, and the PVC pipe is 20mm in diameter. The test module 10 has a structure comprising a 100mm thick pervious concrete layer/grass planting soil layer, a cold plate pipeline layer 102 (buried in a surface layer), geotextile, a 100mm thick fine gravel layer 104, geotextile and a 38mm thick bearing grid layer 105 from top to bottom, and 50 temperature test points are respectively arranged on the surface layer, each geotextile layer 103 and each water pipe inlet and outlet and are connected with a temperature tester.
The submersible pump is a photovoltaic direct-current water pump 2, and the lift is 6 m; the valve is a gate valve; the measuring range of the float flowmeter 4 is 0-1000L/h; the spray head 8 is a 4-minute screw thread copper spray head 8, the working pressure is 1Kg, the measuring range is 5L/h-150L/h of flow, and the radius of the spraying range is 1.5m and can be adjusted; the reservoir 12 is a 980mm by 760mm by 680mm plastic water tank.
The green road surface layer 101 is pervious concrete with the thickness of 100mm, the porosity is 15 percent, the concrete strength is C35, or the light nutrient planting soil with the thickness of 100mm is covered with growing turf, and the dry density is 334 Kg/square meter; the cold plate pipeline layer 102 is 10 parallel metal pipes or PVC pipes connected with the D25mm at equal intervals; the geotextile is a strong water permeable felt geotextile, and the density is 500 g/square meter; the fine crushed stone layer 104 is 50mm, and the particle size distribution is 20-50 mm; the load-bearing grid layer 105 was 1940mm × 720mm × 38mm GRP panels. And (3) smearing permeable waterproof paint on the test cavity, and carrying out a water-permeable sealing test to meet the requirement of no seepage or leakage.
10 parallel metal pipes or PVC pipes which are connected with D25mm at equal intervals are embedded in the matrix layer and used as a cold plate pipeline layer 102 for cooling, and the cold plate pipeline layer 102 is placed in the middle of the test module 10 structure as much as possible so as to ensure that the cold quantity of the cold plate 11 is uniformly subjected to heat exchange and cooling with the surface of the test module 10. During the experiment, the valve is in a semi-closed state, then the water pump is started, and then the valve is adjusted and matched with the flowmeter to obtain different cold water flow rates.
The rainfall simulation device mainly comprises a water storage tank 12, a photovoltaic direct-current water pump 2, a spray head 8, a PVC water pipe, a valve, a float flowmeter 4, a liquid level sensing measuring instrument, a rainwater baffle and the like. 10 spray heads 8 are uniformly arranged at the top, are connected in a ring mode through PVC pipes with the pipe diameters of 20mm, spray the PVC pipes to the testing module 10, simulate the rainfall condition, and adjust different rainfall amounts and rainfall intensities through the reading of the valves and the float flowmeters 4. The rainfall simulation device can more accurately test the water storage and drainage performance of the outdoor green channel module under the variables of rainfall intensity, rainfall duration, surface layer type, outdoor environment temperature and humidity and the like.
When the experiment is started, the water storage tank 12 stores enough water, rainwater is output from the water storage tank 12, the water is lifted to the top of the testing module 10 through the photovoltaic direct-current water pump 2, and the rainwater is sprayed out from the spray heads 8 annularly connected to the top under the pressure of the photovoltaic direct-current water pump 2 to form rainfall-shaped liquid drops. And converting the rainfall intensity standard and the set rainfall duration into corresponding scale values of the flowmeter, acquiring different rainfall intensities through the float flowmeter 4 and the opening of the regulating valve, and simulating the test of the test module 10 under different rainfall intensities. The rainwater baffle concentrates the rainwater that shower nozzle 8 dropped in test module 10, prevents that the rainwater from spattering outward. Rainwater falls to the surface of the test module 10 to produce surface rainwater runoff which seeps down through the upper matrix layer of the module into the bricked water basin 108. A part of the rainwater is retained on the surface layer and absorbed by the surface layer, and the other part of the rainwater downwards permeates through the geotextile, the fine gravel layer 104, the geotextile and the grid layer 105. Finally, excessive rainwater enters the bottom of the testing module 10, is stored in a leakage-proof water tank of the rainwater collecting device, and the water level change inside the water tank is obtained through the measurement of the liquid level sensor 6, so that the rainwater seepage runoff of the module is obtained.
On a sunny day with higher outdoor temperature, the photovoltaic direct-current water pump 2 is started, rainwater collected and stored in a water tank of the rainwater collection device is lifted and conveyed to the cold plate pipeline layer 102 for heat exchange and cooling, the temperature change effect of cooling of the cold plate 11 is compared with that of the other similar outdoor environment conditions, and meanwhile, the temperature detection device 1 is used for monitoring and recording longitudinal temperature change of each structural layer, so that the cooling performance of the green cold plate module is obtained.
The device adopts permeable materials from top to bottom, is favorable for rainwater runoff to flow to the lower end water tank in time, reduces the internal flow resistance of rainwater, and more accurately tests the change of the rainwater runoff along with time. The cold plate 11 is buried in the matrix layer, and the rainwater collected and stored by the rainwater collecting device is reused for water cooling of the green channel cold plate. Temperature monitoring points are arranged at different substrate layers, so that the cooling performance of green channel modules of different structures under different natural environments and variable quantities such as flow velocity in the cold plate 11 pipe can be simulated. The test module 10 simulates an urban outdoor green road, quantitatively and qualitatively tests and analyzes the water storage and drainage capacity of the outdoor green road under the conditions of coping with different rainfall intensities, rainfall durations, different surface layer types, natural environments and other factors, and provides reference for practical engineering application. This testing arrangement simplifies the actual test to the green way of holding drainage and cooling performance of actual open air, realizes the green way structure of equivalence through setting up test module 10 to through setting up rainfall simulation device and temperature testing arrangement, can test more portably accurately, and easy operation.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an outdoor green way cold drawing testing arrangement in city which characterized in that includes:
the test module is internally paved with a substrate layer and a cold plate, the cold plate comprises a water inlet end and a water outlet end for heat exchange, and a rainwater collecting device for collecting surface runoff rainwater and seepage runoff rainwater of the substrate layer is arranged below the test module;
a drainage detection device for detecting rainwater seepage runoff of the substrate layer is arranged in the rainwater collection device; locate test module's top and be connected the rainfall analogue means who is used for the rainfall simulation with the water storage box, rainfall analogue means can adjust rainfall intensity and rainfall.
2. The urban outdoor green channel cold plate testing device according to claim 1, further comprising:
the temperature detection device is arranged on each substrate layer and the water inlet end and the water outlet end of the cold plate to detect the temperature;
the water outlet end of the rainwater collecting device is connected with the water inlet end of the cold plate through a cold plate water inlet pipeline, a flow speed adjusting device used for adjusting the water flow speed is arranged on the cold plate water inlet pipeline, and the water outlet end of the cold plate is connected with the rainwater collecting device for collection.
3. The urban outdoor green road cold plate testing device according to claim 2, wherein the testing module comprises a green road surface layer, the cold plate, a geotextile layer, a fine gravel layer, a geotextile layer and a weighing grid layer which are sequentially arranged from top to bottom, the cold plate is embedded in the green road surface layer, and the green road surface layer is specifically a permeable concrete layer or a grass planting soil layer.
4. The urban outdoor green channel cold plate testing device according to claim 3, wherein the rainfall simulation device comprises a water storage tank, a water pump, a water inlet pipeline connected with the water pump, and a plurality of rainfall sprayers arranged above the testing module, wherein the water inlet pipeline is provided with a check valve and a float flowmeter to adjust rainfall intensity and rainfall amount, the number of the rainfall sprayers is multiple, and the plurality of rainfall sprayers are uniformly arranged above the testing module.
5. The urban outdoor green road cold plate testing device according to claim 4, wherein the flow rate regulating device is in particular a check valve and a float flow meter.
6. The urban outdoor green channel cold plate testing device according to claim 5, wherein the water displacement detection device is specifically a liquid level sensor.
7. The urban outdoor green channel cold plate testing device according to claim 6, wherein the temperature detection device is specifically an antirust thermocouple sensor.
8. The urban outdoor green channel cold plate testing device according to claim 7, wherein the testing module further comprises a testing cavity for laying the substrate layer and the cold plate, and an insulating layer for preventing heat from spreading laterally is arranged outside the testing cavity.
9. The urban outdoor green channel cold plate testing device according to claim 8, wherein the cold plate comprises a plurality of cold water pipes arranged in parallel.
10. The urban outdoor green channel cold plate testing device according to claim 9, wherein a drainage pipeline for draining when excess water is accumulated is arranged at a preset height of the rainwater collecting device.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146434A (en) * | 2019-06-14 | 2019-08-20 | 广东工业大学 | A kind of green road cold plate test device of open urban |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110146434A (en) * | 2019-06-14 | 2019-08-20 | 广东工业大学 | A kind of green road cold plate test device of open urban |
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