Greening module heat insulation performance testing device

Abstract

The utility model relates to the technical field of greening module testing, and discloses a greening module heat insulation performance testing device which comprises a weighing unit. The sample tray is arranged on the weighing unit and is suitable for accommodating a tested sample; the test assembly comprises a solar radiation simulation unit, the solar radiation simulation unit is hung on the upper side of the sample tray and is arranged opposite to the sample tray, different greening roofs are tested, so that the evaporation and heat insulation performance indexes of the roofs are obtained, and whether the greening roofs are competent for corresponding urban environments or not can be judged conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of greening module testing, in particular to a device for testing the thermal insulation performance of a greening module. Background Art

[0002] The greening module can retain rainwater in the rainy season, delay and reduce the discharge of rainwater into the municipal pipe network, and relieve the pressure on the drainage system. At the same time, it can release moisture to the surrounding environment through evaporation in the dry season, thereby improving the surrounding microclimate.

[0003] In existing technologies, greening modules come in a variety of forms, each with varying substrate composition, thickness, and structural structure. These modules have varying rainwater retention capabilities and influences on the surrounding microclimate. Rooftop greening is a type of greening module, and a key performance indicator for rooftop greening is its ability to insulate while retaining water.

[0004] Therefore, different green roofs need to be tested to determine whether they are suitable for the corresponding urban environment based on the test results. Utility Model Content

[0005] In view of this, the utility model provides a greening module thermal insulation performance testing device, which tests different greening roofs to obtain roof evaporation thermal insulation performance indicators, making it easier to judge whether they are competent for the corresponding urban environment.

[0006] The utility model provides a device for testing the thermal insulation performance of a greening module, comprising: a weighing unit; a sample tray, which is arranged on the weighing unit and is suitable for accommodating a sample to be tested; and a testing component, which comprises a solar radiation simulation unit, which is suspended on the upper side of the sample tray and arranged opposite to the sample tray.

[0007] Beneficial Effects: The sample tray is used to hold the green roof sample being tested. The weighing unit weighs the sample tray and the green roof sample placed inside. The weight change of the weighed sample determines the rate of internal moisture loss as the test progresses, thereby obtaining the evaporative insulation performance index. By setting up a solar radiation simulation unit, different levels of light radiation intensity are obtained, thereby simulating different environmental conditions of sunlight exposure, making the test results more reliable.

[0008] In an optional embodiment, the test assembly further includes a test chamber, wherein a bracket is provided on the test chamber, and the bracket supports the test chamber on the upper side of the sample tray. The lower side of the test chamber has an opening adapted to the contour of the sample tray, and the upper end of the sample tray extends into the opening. The solar radiation simulation unit is located on the inner top wall of the test chamber.

[0009] Beneficial effects: By setting up a test cabin, on the one hand, the test cabin provides a structural basis for the installation of the solar radiation simulation unit; on the other hand, the test cabin provides a relatively closed and stable space for the tested samples, avoiding interference from other uncontrollable external factors during the test process and improving the reliability of the experimental results.

[0010] In an optional embodiment, ventilation holes are provided on two opposite side walls of the test chamber, and a driving fan is provided at the ventilation hole on one side wall.

[0011] Beneficial effect: By setting up vents and setting a driving fan at one side of the vents, the driving fan drives the air in the test chamber when it is working, so that the air near the test sample is always kept flowing, simulating the air environment of the outdoor environment and the roof greening. The water vapor evaporated from the tested sample is discharged from the test chamber in time, avoiding the deviation of the experimental results caused by the increase of local air humidity, and further improving the reliability of the experiment.

[0012] In an optional embodiment, an environmental control box is connected to the ventilation opening on the test chamber, which is opposite to the ventilation opening, and the environmental control box is suitable for adjusting the temperature and relative humidity of the air.

[0013] Beneficial effects: By setting up an environmental control box, the air entering the test chamber is pre-treated, and the temperature and relative humidity of the air are adjusted in advance according to the requirements of the ideal experimental environment, so that various environmental factors in the experimental process are highly controllable, which facilitates accurate simulation of various environmental conditions of the roof greening module in the actual use environment, and improves the applicability of the test device and the reliability of the test results.

[0014] In an optional embodiment, the test chamber is tubular, and the two ventilation ports are respectively located at the two ends of the tubular test chamber. At least two air balancing plates are provided in the test chamber, and a plurality of air balancing holes are evenly distributed on the surface of the air balancing plate. The two air balancing plates are respectively located on both sides of the sample tray.

[0015] Beneficial effects: By setting up the air balancing plate, the airflow is evenly distributed on the cross-section of the test chamber, and by setting the test chamber into a tubular shape, the airflow path in the test chamber is extended, so that the airflow passing through the air balancing plate has sufficient time to diffuse evenly along the cross-section of the test chamber, thereby allowing the airflow entering the test chamber to pass through the surface of the tested sample more evenly, avoiding the situation where the local wind speed on the surface of the tested sample is not uniform, which affects the accuracy of the test results.

[0016] In an optional embodiment, the tubular test chamber is provided with a vertical shaft at a position opposite to the sample tray, the cross-section of the vertical shaft is the same as the outline of the sample tray, the top end of the side wall of the vertical shaft is detachably connected to a mounting plate, and the solar radiation simulation unit is arranged on the mounting plate.

[0017] Beneficial effects: By setting up a vertical shaft and a mounting plate at the top of the vertical shaft, it is convenient to install and debug the solar radiation simulation unit. In addition, since the solar radiation simulation unit is set in the vertical shaft, the outline of the vertical shaft limits the irradiation range of the solar radiation simulation unit, so that the irradiation range is just adapted to the outline of the sample tray, avoiding irradiation of the surrounding area of the sample, causing the temperature of the surrounding area to rise, affecting the degree of restoration of the simulation of the use environment, and thus affecting the experimental results.

[0018] In an optional embodiment, it further includes a temperature measuring unit, a humidity measuring unit and a wind speed measuring unit. A plurality of test holes are provided on the side wall of the test chamber, and the temperature measuring unit, the humidity measuring unit and the wind speed measuring unit are respectively provided at the corresponding test holes.

[0019] Beneficial effects: By setting up multiple test holes, a structural basis is provided for the installation of temperature measurement units, humidity measurement units and wind speed measurement units. At the same time, by setting up corresponding measurement units, the temperature, humidity and wind speed factors at multiple locations in the test chamber are tested, which facilitates the experimenters to accurately control the experimental environment and provides a detailed and reliable data basis for analyzing and evaluating the various performances of the tested samples.

[0020] In an optional embodiment, a computer is further included, and the temperature measuring unit, the humidity measuring unit, the wind speed measuring unit and the weighing unit are all electrically connected to the computer, and the computer is suitable for receiving measurement data sent by the temperature measuring unit, the humidity measuring unit, the wind speed measuring unit and the weighing unit.

[0021] Beneficial effect: By electrically connecting the temperature measurement unit, humidity measurement unit and wind speed measurement unit to a computer, the detection data of each measurement unit can be automatically counted according to the time axis by the computer, so that the experimenter can more intuitively and conveniently understand the changes of various experimental parameters during the entire experiment by making statistical tables or data curves.

[0022] In an optional embodiment, the solar radiation simulation unit is a halogen lamp with adjustable power, and the solar radiation simulation unit is connected to a voltage stabilizing device.

[0023] Beneficial effects: By setting a halogen lamp as a solar radiation simulation unit, the radiation amount is directly related to the power of the halogen lamp, so that the experimenter can simulate solar radiation of different intensities by adjusting the actual power of the halogen lamp. The voltage stabilizing device is used to stabilize the voltage at the halogen lamp, so that the radiation intensity of the solar radiation simulation unit remains stable, which is conducive to obtaining reliable experimental results.

[0024] In an optional embodiment, a heat insulation layer is provided on the wall of the test cabin.

[0025] Beneficial effects: By setting up a thermal insulation layer, the thermal insulation performance of the test cabin wall is improved, the heat transfer inside and outside the test cabin is reduced, which makes it easier to ensure the temperature stability throughout the test cabin, and effectively reduces the interference of the external environment on the internal environment of the test cabin, further improving the reliability of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the overall structure of a device for testing the thermal insulation performance of a greening module according to an embodiment of the present utility model;

[0028] Figure 2 This is a schematic structural diagram of a test assembly in a device for testing the thermal insulation performance of a greening module according to an embodiment of the present utility model;

[0029] Figure 3 This is a top view of a test component in a greening module thermal insulation performance testing device according to an embodiment of the present utility model.

[0030] Description of reference numerals:

[0031] 100, weighing unit; 200, sample tray; 300, test assembly; 301, solar radiation simulation unit; 302, test chamber; 3021, vent; 3022, test hole; 3023, bracket; 3024, shaft; 3025, mounting plate; 303, drive fan; 304, environmental control box; 305, air distribution plate. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0033] The following combination Figures 1 to 3 , describing the embodiments of the present utility model.

[0034] According to the embodiment of the present invention, a device for testing the thermal insulation performance of a greening module is provided. Figure 1 , including: a weighing unit 100; a sample tray 200, which is arranged on the weighing unit 100 and is suitable for accommodating the sample to be tested; a test component 300, including a solar radiation simulation unit 301, which is suspended on the upper side of the sample tray 200 and is arranged opposite to the sample tray 200.

[0035] In this embodiment, a sample tray 200 is used to hold the green roof sample being tested. A weighing unit 100 weighs the sample tray 200 and the green roof sample placed therein. The change in weight of the weighed sample determines the rate of moisture loss as the test progresses, thereby determining the evaporative thermal insulation performance index. A solar radiation simulation unit 301 is provided to simulate varying degrees of sunlight intensity, ensuring more reliable test results.

[0036] Specifically, the weighing unit 100 can be a platform scale or other device with weighing capabilities. The solar radiation simulation unit 301 can be a halogen lamp or an infrared lamp or other device that can emit infrared radiation. During the actual experiment, the experimenter first places the test sample on the sample tray 200 and records the initial weight. Then, the experimenter places the sample tray 200 on the lower side of the solar radiation simulation unit 301, turns on the solar radiation simulation unit 301, and periodically checks the changes in the reading on the weighing unit 100 to obtain data on the change in evaporation over time. The experimenter can calculate the heat absorbed by the test sample based on the evaporation.

[0037] It should be noted that the tested samples placed in the tray may have moisture in them because they have undergone the water storage and drainage test together with the sample tray 200, or may have moisture in them because a certain amount of water has been poured into them for the purpose of conducting this experiment.

[0038] In one embodiment, the test assembly 300 also includes a test chamber 302, which is provided with a bracket 3023. The bracket 3023 supports the test chamber 302 on the upper side of the sample tray 200. The lower side of the test chamber 302 has an opening that matches the contour of the sample tray 200. The upper end of the sample tray 200 extends into the opening, and the solar radiation simulation unit 301 is located on the inner top wall of the test chamber 302.

[0039] Specifically, this embodiment does not limit the specific form of the bracket 3023. The bracket 3023 can be a fixed bracket 3023 or a bracket 3023 with adjustable height. By adopting the bracket 3023 with adjustable height, the test chamber 302 can be better adapted to sample trays 200 of different heights.

[0040] In this embodiment, by setting up the test cabin 302, on the one hand, the test cabin 302 provides a structural basis for the installation of the solar radiation simulation unit 301, and on the other hand, the test cabin 302 provides a relatively closed and stable space for the tested sample, thereby preventing the test process from being interfered with by other uncontrollable external factors, thereby improving the reliability of the experimental results.

[0041] See also Figure 1 and Figure 2 In one embodiment, ventilation holes 3021 are provided on two opposite side walls of the test chamber 302 , and a driving fan 303 is provided at the ventilation hole 3021 on one side wall.

[0042] Specifically, this embodiment does not limit the specific form of the test chamber 302. The test chamber 302 may be a horizontally arranged square tube, or may be other shapes.

[0043] In this embodiment, a vent 3021 is provided, and a driving fan 303 is provided at one side of the vent 3021. When the driving fan 303 is working, the air in the test chamber 302 is driven, so that the air near the test sample is always kept flowing, simulating the air environment of the roof greening in the outdoor environment, and the water vapor evaporated from the tested sample is discharged from the test chamber 302 in time, avoiding the deviation of the experimental results caused by the increase of local air humidity, and further improving the reliability of the experiment.

[0044] In one embodiment, an environmental control box 304 is connected to the vent 3021 on the test chamber 302 , which is opposite to the vent 3021 . The environmental control box 304 is suitable for adjusting the temperature and relative humidity of the air.

[0045] Specifically, the environment control box 304 may be provided with an air heating device, an air cooling device, an air humidifier, and an air drying device. The air heating device may be, for example, a resistance wire heater, the air cooling device may be, for example, a compression refrigerator, the air humidifier may be, for example, an atomizing humidifier, and the air drying device may be, for example, an air drying filter. The order in which the air flows within the environment control box 304 may be such that the air passes through the air heating device, the air cooling device, the air drying device, and the air humidifier in sequence. The operation of the above-mentioned devices is controlled according to the air indicators and parameters adjusted according to actual needs, thereby adjusting the temperature and humidity of the air. It should be noted that the form of the air heating device, the air cooling device, the air humidifier, and the air drying device is not unique, and the order in which the air passes through the corresponding devices within the environment control box 304 is not unique. As long as the corresponding functions of heating the air, cooling the air, humidifying the air, and drying the air are provided, it will suffice.

[0046] In this embodiment, by setting up an environmental control box 304, the air entering the test chamber 302 is pre-processed, and the temperature and relative humidity of the air are adjusted in advance according to the requirements of the ideal experimental environment, so that various environmental factors in the experimental process are highly controllable, which facilitates accurate simulation of various environmental conditions of the roof greening module in the actual use environment, thereby improving the applicability of the test device and the reliability of the test results.

[0047] In one embodiment, the test chamber 302 is tubular, and two ventilation ports 3021 are respectively located at the two ends of the tubular test chamber 302. At least two air balancing plates 305 are provided in the test chamber 302, and a plurality of air balancing holes are evenly distributed on the surface of the air balancing plate 305. The two air balancing plates 305 are respectively located on both sides of the sample tray 200.

[0048] See also Figure 2 and Figure 3 In this embodiment, by providing an air balancing plate 305, the airflow is evenly distributed on the cross-section of the test chamber 302, and by configuring the test chamber 302 to be tubular, the airflow path in the test chamber 302 is extended, so that the airflow passing through the air balancing plate 305 has sufficient time to diffuse evenly along the cross-section of the test chamber 302, thereby allowing the airflow entering the test chamber 302 to pass through the surface of the tested sample more evenly, thereby avoiding the situation where the local wind speed on the surface of the tested sample is not uniform, which affects the accuracy of the test results.

[0049] In one embodiment, a tubular test chamber 302 is provided with a vertical shaft 3024 at a position opposite to the sample tray 200. The cross-section of the vertical shaft 3024 is the same as the outline of the sample tray 200. The top of the side wall of the vertical shaft 3024 is detachably connected to a mounting plate 3025, and the solar radiation simulation unit 301 is arranged on the mounting plate 3025.

[0050] In this embodiment, a vertical shaft 3024 is provided and a mounting plate 3025 is provided at the top of the vertical shaft 3024, so as to facilitate the installation and debugging of the solar radiation simulation unit 301. In addition, since the solar radiation simulation unit 301 is provided in the vertical shaft 3024, the outline of the vertical shaft 3024 limits the irradiation range of the solar radiation simulation unit 301, so that the irradiation range is just adapted to the outline of the sample tray 200, thereby avoiding irradiation of the surrounding area of the sample, causing the temperature of the surrounding area to rise, affecting the degree of restoration of the simulation of the use environment, and thus affecting the experimental results.

[0051] In one embodiment, a temperature measuring unit, a humidity measuring unit and a wind speed measuring unit are further included (the temperature measuring unit, the humidity measuring unit and the wind speed measuring unit are not shown in the figure), and a plurality of test holes 3022 are provided on the side wall of the test chamber 302, and the temperature measuring unit, the humidity measuring unit and the wind speed measuring unit are respectively arranged at different test holes 3022.

[0052] Specifically, the temperature measuring unit may be a thermometer or a temperature sensor; the humidity testing unit may be a hygrometer or a humidity sensor; and the wind speed measuring unit may be an anemometer or a wind speed sensor.

[0053] It should be noted that the multiple test holes 3022 can be divided into multiple groups. One group of test holes 3022 is evenly distributed along the length of the tubular test chamber 302, and is used to install multiple wind speed measurement units in a one-to-one correspondence, thereby monitoring the wind speed at various locations along the airflow path of the entire test chamber 302. Another group of test holes 3022 is spaced apart above the sample box and on the side walls of the shaft 3024, and is used to install humidity measurement units and temperature measurement units, thereby performing multi-point detection and statistical analysis of the temperature and humidity near the tested sample. In addition to the above arrangement, a wind speed measurement unit, a temperature measurement unit, and a humidity measurement unit can also be installed separately at each test hole 3022, thereby monitoring and statistically analyzing the wind speed, temperature, and humidity at various locations within the test chamber 302.

[0054] In this embodiment, by setting up multiple test holes 3022, a structural basis is provided for the installation of the temperature measurement unit, the humidity measurement unit and the wind speed measurement unit. At the same time, by setting up corresponding measurement units, the temperature, humidity and wind speed factors at multiple locations in the test chamber 302 are detected, which facilitates the experimenter to accurately control the experimental environment and provides a detailed and reliable data basis for analyzing and evaluating various aspects of the performance of the tested samples.

[0055] In one embodiment, a computer is further included, and the temperature measuring unit, humidity measuring unit, wind speed measuring unit and weighing unit 100 are all electrically connected to the computer, and the computer is suitable for receiving measurement data sent by the temperature measuring unit, humidity measuring unit, wind speed measuring unit and weighing unit 100.

[0056] In this embodiment, by electrically connecting the temperature measuring unit, the humidity measuring unit and the wind speed measuring unit to the computer, the detection data of each measuring unit can be automatically counted according to the time axis by the computer, so that the experimenter can understand the changes of various experimental parameters in the entire experimental process more intuitively and conveniently by making statistical tables or data curves.

[0057] In one embodiment, the solar radiation simulation unit 301 is a halogen lamp with adjustable power, and the solar radiation simulation unit 301 is connected to a voltage stabilizing device (not shown in the figure).

[0058] In this embodiment, a halogen lamp is set as the solar radiation simulation unit 301, so that the radiation amount is directly related to the power of the halogen lamp, so that the experimenter can simulate solar radiation of different intensities by adjusting the actual power of the halogen lamp. The voltage stabilizing device is used to stabilize the voltage at the halogen lamp so that the radiation intensity of the solar radiation simulation unit 301 remains stable, which is conducive to obtaining reliable experimental results.

[0059] In one embodiment, a heat insulation layer (not shown) is provided on the wall of the test chamber 302 .

[0060] Specifically, the bulkhead of the test cabin 302 is supported by steel plates, and the heat insulation layer can be made of 150 mm thick extruded polystyrene board, or other heat insulation materials with different thicknesses.

[0061] In this embodiment, the thermal insulation performance of the test chamber 302 wall is improved by providing an insulation layer, which reduces the heat transfer inside and outside the test chamber 302, facilitates ensuring the temperature stability throughout the entire test chamber 302, and effectively reduces the interference of the external environment on the internal environment of the test chamber 302, further improving the reliability of the experimental results.

[0062] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A greening module thermal insulation performance testing device, characterized in that: include: Weighing unit (100); a sample tray (200), disposed on the weighing unit (100), suitable for accommodating a sample to be tested; A test assembly (300) includes a solar radiation simulation unit (301), wherein the solar radiation simulation unit (301) is suspended on the upper side of the sample tray (200) and is arranged opposite to the sample tray (200); The test assembly (300) further comprises a test chamber (302), wherein a bracket (3023) is provided on the test chamber (302), wherein the bracket (3023) supports the test chamber (302) on the upper side of the sample tray (200), wherein the lower side of the test chamber (302) has an opening adapted to the contour of the sample tray (200), wherein the upper end of the sample tray (200) extends into the opening, and the solar radiation simulation unit (301) is located on the inner top wall of the test chamber (302); Ventilation holes (3021) are provided on two opposite side walls of the test chamber (302), and a driving fan (303) is provided at the ventilation hole (3021) on one side wall; An environmental control box (304) is connected to the vent (3021) on the test chamber (302), and the environmental control box (304) is suitable for adjusting the temperature and relative humidity of the air; The test chamber (302) is tubular, and the two ventilation openings (3021) are respectively located at two ends of the tubular test chamber (302). At least two air distribution plates (305) are provided in the test chamber (302), and a plurality of air distribution holes are evenly distributed on the plate surface of the air distribution plate (305). The two air distribution plates (305) are respectively located on both sides of the sample tray (200); The tubular test chamber (302) is provided with a vertical shaft (3024) at a position opposite to the sample tray (200). The cross section of the vertical shaft (3024) is the same as the profile of the sample tray (200). The top end of the side wall of the vertical shaft (3024) is detachably connected to a mounting plate (3025), and the solar radiation simulation unit (301) is arranged on the mounting plate (3025).

2. The greening module thermal insulation performance testing device according to claim 1, characterized in that: It also includes a temperature measuring unit, a humidity measuring unit and a wind speed measuring unit. A plurality of test holes (3022) are provided on the side wall of the test chamber (302), and the temperature measuring unit, the humidity measuring unit and the wind speed measuring unit are respectively provided at the corresponding test holes (3022).

3. The greening module thermal insulation performance testing device according to claim 2, characterized in that: The device further comprises a computer, the temperature measuring unit, the humidity measuring unit, the wind speed measuring unit and the weighing unit (100) are all electrically connected to the computer, and the computer is suitable for receiving measurement data sent by the temperature measuring unit, the humidity measuring unit, the wind speed measuring unit and the weighing unit (100).

4. The greening module thermal insulation performance testing device according to claim 3, characterized in that: The solar radiation simulation unit (301) is a halogen lamp with adjustable power, and the solar radiation simulation unit (301) is connected to a voltage stabilizing device.

5. The device for testing thermal insulation performance of greening modules according to any one of claims 1 to 4, characterized in that: A heat insulation layer is provided on the wall of the test cabin (302).

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