CN117665036A - Main body for detecting overall heat preservation performance of building and detection method thereof - Google Patents
Main body for detecting overall heat preservation performance of building and detection method thereof Download PDFInfo
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- 238000004321 preservation Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 title abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims description 28
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 10
- 238000004088 simulation Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
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- 238000004364 calculation method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 2
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- 230000036760 body temperature Effects 0.000 description 1
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Abstract
The invention relates to a main body for detecting the integral heat preservation performance of a building and a detection method thereof, belonging to the technical field of building detection. The beneficial effects are that: the method can measure the temperature of each room of the building standard layer structure to be detected, the overall laboratory temperature and other data, and obtain the overall heat insulation performance of the building standard layer structure to be detected, has good detection effect, and solves the problem that the prior art can not realize the detection of the overall heat insulation performance of the building.
Description
Technical Field
The invention relates to the technical field of building detection, in particular to a main body and a method for detecting the overall heat preservation performance of a building.
Background
The energy-saving design is required to be carried out on the building in the design stage, the national and local building energy-saving design standard is met, and the heat transfer coefficient detection is required to be carried out on various peripheral protection components and heat preservation materials adopted by the building in the construction stage. The current standard prescribes that the heat transfer coefficient K value of different parts in the enclosure structure, such as doors, windows, walls, roofs, floors and the like, meets the prescribed index, and the whole building can meet the energy-saving standard requirement. However, after the building is completed, no detection method exists yet on the real heat insulation performance of the whole standard layer even of the whole room in the whole building, namely, no method or structure for detecting the heat insulation performance of the whole room exists at present.
Disclosure of Invention
The invention aims to provide a main body and a method for detecting the overall heat preservation performance of a building, which can be used for detecting the temperature of each room of a building standard layer structure to be detected, the overall laboratory temperature and other data and obtaining the overall heat preservation performance of the building standard layer structure to be detected, and has good detection effect, thereby solving the problem that the prior art can not realize the detection of the overall heat preservation performance of the building.
The aim of the invention can be achieved by the following technical scheme: the utility model provides a whole thermal insulation performance detection main part of building, includes the laboratory main part, be fixed with the building standard layer structure of waiting to detect on the bottom plate of laboratory main part, separate into a plurality of rooms through the wall body in waiting to detect the building standard layer structure, all install heater, temperature controller, temperature sensor, electrometer and record appearance in the room, the shaping has ventilation flow hole and refrigeration ventilation through-hole on the curb plate of laboratory main part;
the solar simulation device comprises a transverse connecting beam arranged at the top of a laboratory main body, a lifting moving mechanism is arranged on the transverse connecting beam, a hanging body is hung on a lifting hook of the lifting moving mechanism, a sunlight connecting frame is fixed on the bottom surface of the hanging body, and a plurality of sunlight illuminating bodies are fixed on the bottom surface of the sunlight connecting frame.
The scheme is further, the bottom of waiting to detect building standard layer structure is fixed with a plurality of sky blocks, separates the sky block and will wait to detect and form the sky layer between the bottom plate of building standard layer structure and laboratory main part.
This scheme is further, all be fixed with the bracing piece in the room, the top of bracing piece is fixed at the top surface in room, and the bottom mounting of bracing piece is on the bottom surface in room, and the upper portion and the lower part of bracing piece are all fixed with temperature sensor.
In this scheme, still further, two temperature sensors of room are 0.5m from ground and top surface 0.5m respectively.
In this scheme, the cooling ventilation through hole communicates with the cool air outlet of the cooling system arranged outside the laboratory main body, and the ventilation through hole communicates with the air outlet of the ventilation device arranged outside the laboratory main body.
The scheme is further, all install indoor temperature sensor and record appearance on waiting to detect on the bottom plate top surface of building standard layer structure laboratory main part all around the building standard layer structure, waiting to detect on the top surface of building standard layer structure and waiting to detect on the bottom plate top surface of building standard layer structure below laboratory main part.
The detection method of the main body for detecting the overall heat preservation performance of the building comprises the following steps:
s1, building a standard layer structure of a building to be detected in a laboratory main body according to the actual size of the building to be detected, the actual peripheral protection method and the actual adopted heat insulation material;
s2, dividing the building standard layer structure to be detected into a plurality of rooms through a wall body, wherein a heater, a temperature controller, a temperature sensor, an electric meter and a recorder are arranged in each room to record the temperature of the corresponding room;
s3, arranging a plurality of temperature sensors around the building standard layer structure to be detected, and measuring the indoor temperature of the laboratory main body;
s4, starting a refrigerating system outside the laboratory main body, setting the indoor temperature of the laboratory main body to be 0 ℃, synchronously starting heaters of all rooms in the building standard layer structure to be detected, and setting the indoor temperature of the building standard layer structure to be detected to be 20 ℃;
s5, opening a recorder to collect temperature sensor data, wherein data are collected every 5S;
s6, when the temperature of the laboratory main body is constant at about 0 ℃, the indoor temperature of the building standard layer structure to be detected is constant at about 20 ℃, the average temperature of all temperature sensors of the laboratory main body and the average temperature change absolute value of all temperature sensors in the building standard layer structure to be detected are not more than 0.5 ℃ per hour, and the working power of each heater measured by the electric power meter is not more than 3% of rated power per hour, the whole test reaches a steady state;
s6.1, recording the indoor temperature data of the laboratory main body and the building standard layer structure to be detected through a temperature sensor, simultaneously displaying on a curve change chart, comparing with a set constant temperature, and automatically adjusting output power of a heater in a room and a refrigerating system outside the laboratory main body when the temperature change range exceeds the range of +/-0.5 ℃ of the set constant temperature so that the temperature reaches the required set range;
s6.2, subtracting the threshold value of the change of the average temperature of the temperature sensor in the laboratory main body per hour, and checking whether the temperature sensor and the wall body are damaged or not when the absolute value of the data is larger than 1 ℃;
s6.3, subtracting the threshold value of the change of the working power of each heater per hour, and checking whether the heater and the wall body are damaged or not when the absolute value of the data is more than 6% of rated power;
and S7, measuring the main body temperature of the laboratory and the indoor temperature of the building standard layer structure to be detected at intervals of 30 minutes in a steady state stage, measuring six times in total, calculating the average value of the six groups of data, and ending the test.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, a laboratory main body, a building standard layer structure to be detected, rooms, a space isolation block, a space isolation layer, a ventilation through hole, a refrigerating ventilation through hole, a heater, a temperature controller, an electric meter, a temperature sensor and a recorder are designed, each room can be divided into independent test areas by the space isolation block matched with the space isolation layer, six surfaces of the building standard layer structure to be detected can be contacted with an external air environment simultaneously by the space isolation layer, so that corresponding ventilation and temperature adjustment are facilitated, and a sunlight simulation device is further arranged on the laboratory main body.
2. In the building main body heat preservation detection method, when the absolute value of the average temperature change of a laboratory main body, a building standard layer structure to be detected and a temperature sensor of the laboratory main body and the absolute value of the change of the working power of a heater per hour all meet corresponding standards, the experiment is stable, the result of corresponding temperature data acquisition is more accurate, the laboratory main body and the building standard layer structure to be detected have temperature difference and are maintained in corresponding temperature ranges, the heat preservation performance of the building main body is illustrated, and meanwhile, when the absolute value of the average temperature change of the temperature sensor of the laboratory main body is not more than 0.5 ℃ and the absolute value of the change of the working power of the heater per hour is not more than 3% of the rated power, the heat supply of the machine is stable, the condition of heating or cooling with larger amplitude can not occur, the stable heating condition in the building main body is further ensured, and the accuracy of the detection of experimental data is ensured.
3. This patent can survey the temperature of each room of waiting to detect building standard layer structure and laboratory bulk temperature etc. data to obtain waiting to detect building standard layer structure holistic thermal insulation performance, its detection effect is good.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
Fig. 1 is a schematic structural diagram of a main body for detecting overall heat insulation performance of a building.
In the figure: 10. a laboratory body; 100. building standard layer structure to be detected; 101. a room; 102. a spacer block; 103. a spacer layer; 104. a ventilation flow hole; 105. a refrigerating ventilation through hole; 4. a heater; 5. a temperature controller; 6. an electricity meter; 7. a temperature sensor; 8. a recorder; 9. a support rod; 40. a solar radiation simulation device; 41. a transverse connecting beam; 42. a lifting moving mechanism; 43. and a sunlight connecting frame.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 of the specification, a main body for detecting the overall heat insulation performance of a building comprises a main body 10 of the laboratory, a building standard layer structure 100 to be detected is fixed on a bottom plate of the main body 10 of the laboratory, the building standard layer structure 100 to be detected is divided into a plurality of rooms 101 through walls, a heater 4, a temperature controller 5, a temperature sensor 7, an electric meter 6 and a recorder 8 are arranged in each room 101, and ventilation holes 104 and refrigerating ventilation through holes 105 are formed on side plates of the main body 10 of the laboratory;
the solar simulation device 40 comprises a transverse connecting beam 41 arranged at the top of the laboratory main body 10, a lifting moving mechanism 42 is arranged on the transverse connecting beam 41, a hanging body is hung on a lifting hook of the lifting moving mechanism 42, a sunlight connecting frame 43 is fixed on the bottom surface of the hanging body, and a plurality of sunlight illuminating bodies are fixed on the bottom surface of the sunlight connecting frame 43.
The bottom of the building standard layer structure 100 to be detected is fixed with a plurality of spacing blocks 102, a spacing layer 103 is formed between the building standard layer structure 100 to be detected and the bottom plate of the laboratory main body 10 by the spacing blocks 102, supporting rods 9 are fixed in the rooms 101, the top ends of the supporting rods 9 are fixed on the top surfaces of the rooms 101, the bottom ends of the supporting rods 9 are fixed on the bottom surfaces of the rooms 101, temperature sensors 7 are fixed on the upper parts and the lower parts of the supporting rods 9, the two temperature sensors 7 of the rooms 101 are respectively separated from the ground by 0.5m and the top surface by 0.5m, a refrigerating ventilation through hole 105 is communicated with a cold air outlet of a refrigerating system arranged outside the laboratory main body 10, and a ventilation through hole 104 is communicated with an air outlet of a ventilation device arranged outside the laboratory main body 10.
The indoor temperature sensor 7 and the recorder 8 are arranged on the top surface of the bottom plate of the laboratory main body 10 around the building standard layer structure 100 to be detected, the top surface of the building standard layer structure 100 to be detected and the top surface of the bottom plate of the laboratory main body 10 below the building standard layer structure 100 to be detected.
The recorder 8 can record the temperature value of the temperature sensor 7 and the working power of the heater 4 measured by the power meter 6. The heater 4 is electrically connected with the temperature controller 5 and the power meter 6 through electrical connection wires. The temperature controller 5 is connected with the recorder 8. When the area of the room 101 is large, two heaters 4 should be arranged to ensure that the room 101 is heated uniformly to a specified temperature. A plurality of ventilation through holes 104 and cooling ventilation through holes 105 are formed on the side plate of the laboratory main body 10, and a mounting chamber is arranged outside the laboratory main body 10, and a cooling system and a ventilation device are arranged inside the mounting chamber.
The refrigerating system comprises an air conditioner external unit and an air conditioner internal unit, wherein the air conditioner external unit is fixed on the outer side of a wall body of the installation chamber, the air conditioner internal unit is fixed in the installation chamber, an air outlet of the air conditioner internal unit is communicated with the refrigerating ventilation through hole 105, and the air outlet and the air conditioner internal unit can be communicated through a connecting pipe. Further, the ventilation device comprises a plurality of ventilators, wherein the air outlets of part of ventilators are communicated with the corresponding ventilation holes 104, the air outlets of the other ventilators are communicated with the other ventilation holes 104, and the ventilation effect can be realized by running all ventilators to realize the flow of the gas in the laboratory main body 10.
The bottom of the building standard layer structure 100 to be detected is fixed with a plurality of spacing blocks 102, a spacing layer 103 is formed between the building standard layer structure 100 to be detected and the bottom plate of the laboratory main body 10, and the spacing layer 103 ensures that six surfaces of the building standard layer structure 100 to be detected are in contact with the external air environment.
Further, the two temperature sensors 7 of each room 101 are respectively located at 0.5m from the ground and 0.5m from the top surface, and the temperature sensors 7 are placed in the room 101 and the laboratory main body 10 of the building standard layer structure 100 to be tested, for measuring the temperature in the room 101 and the indoor temperature of the laboratory main body 10 of the building standard layer structure 100 to be tested.
Further, the solar simulation device 40 includes two parallel transverse connection beams 41 fixed on the top of the laboratory body 10, the left and right ends of the transverse connection beams 41 are fixed on the upper parts of the corresponding inner side walls of the laboratory body 10, the transverse connection beams 41 are provided with lifting moving mechanisms 42, the lifting moving mechanisms 42 can be electric hoists, and the moving wheels of the lifting moving mechanisms are arranged on the upper parts of the side edges of the bottom plates of the transverse connection beams 41; in this embodiment, two electric hoists are mounted on the transverse connection beam 41, hanging bodies are hung on hooks of four electric hoists of the two transverse connection beams 41, the sunlight connection frame 43 is fixed on the bottom surfaces of all the hanging bodies, and a plurality of sunlight illumination bodies are fixed on the bottom surfaces of the sunlight connection frame 43. When the four electric hoist moving mechanism is in operation, the four electric hoists are required to move simultaneously, the four electric hoists can be connected through the connecting beam, and the four electric hoists can also synchronously move by the driving motor for moving, so that the operation is realized.
The sunlight connecting frame 43 can move transversely through the operation of the four electric hoists, the illumination position is changed, the lifting hooks of the four electric hoists synchronously ascend or descend, the high-low position of the sunlight connecting frame 43 can be adjusted, and different illumination requirements of the building standard layer structure 100 to be detected are met. The corresponding temperature sensor 7 and recorder 8 are connected by electrical connection lines.
The top of the laboratory main body 10 is also provided with a top crane, which comprises two top transverse beams parallel front and back, two ends of each transverse beam are fixed on the left and right inner side walls of the laboratory main body 10, a trolley is arranged on transverse rails on the top surfaces of the two top transverse beams, a lifting winch is arranged on the trolley, the lifting hook of the lifting winch is vertically downward and staggered with the lifting hook of the electric hoist of the sunshine simulation equipment 40 so as to ensure that the lifting winch and the electric hoist do not collide, the top crane is mainly used for lifting when the building standard layer structure 100 to be detected is built, and the lifting crane is basically not used after the installation is completed.
The laboratory main body 10 can realize the control of temperature-30 ℃ to 60 ℃, humidity 20 percent to 90 percent and sunlight intensity 58W/m 2 ～1000W/m 2 。
The detection method of the main body for detecting the overall heat preservation performance of the building in the patent is as follows:
s1, building a building standard layer structure 100 to be detected in a laboratory main body 10 according to the actual size of the building to be detected, the actual peripheral protection method and the actual adopted heat insulation material;
s2, dividing the building standard layer structure 100 to be detected into a plurality of rooms 101 through walls, wherein a heater 4, a temperature controller 5, a temperature sensor 7, an electric power meter 6 and a recorder 8 are arranged in each room 101 to record the temperature of the corresponding room 101;
s3, arranging a plurality of temperature sensors 7 around the building standard layer structure 100 to be detected, and measuring the indoor temperature of the laboratory main body 10;
s4, starting a refrigerating system outside the laboratory main body 10, setting the indoor temperature of the laboratory main body 10 to be 0 ℃, synchronously starting the heaters 4 of all the rooms 101 in the building standard layer structure 100 to be detected, and setting the indoor temperature of the building standard layer structure 100 to be detected to be 20 ℃;
s5, opening a recorder 8 to collect data of the temperature sensor 7, wherein the data is collected every 5S;
s6, when the temperature of the laboratory main body 10 is constant at about 0 ℃, the indoor temperature of the building standard layer structure 100 to be detected is constant at about 20 ℃, the average temperature of all temperature sensors 7 of the laboratory main body 10 and the average change absolute value of each hour of the average temperature of all temperature sensors 7 in the building standard layer structure 100 to be detected are not more than 0.5 ℃, and the change absolute value of each hour of the working power of each heater 4 measured by the electric power meter 6 is not more than 3% of rated power, the whole test reaches a steady state;
s6.1, recording the indoor temperature data of the laboratory main body 10 and the building standard layer structure 100 to be detected through a temperature sensor 7, simultaneously displaying on a curve change chart and comparing with a set constant temperature, and automatically adjusting output power of the heater 4 in the room 101 and a refrigerating system outside the laboratory main body 10 when the temperature change range exceeds the range of +/-0.5 ℃ of the set constant temperature so that the temperature reaches the required set range;
s6.2, subtracting the threshold value of the change of the average temperature of the temperature sensor 7 in the laboratory main body 10 per hour, and checking whether the temperature sensor 7 and the wall body are damaged or not when the absolute value of data is larger than 1 ℃;
s6.3, subtracting the threshold value of the change of the working power of each heater 4 per hour, and checking whether the heater 4 and the wall body are damaged when the absolute value of data is more than 6% of rated power;
and S7, measuring the temperature of the laboratory main body 10 and the indoor temperature of the building standard layer structure 100 to be detected at intervals of 30 minutes in a steady state stage, measuring six times in total, calculating the average value of the six groups of data, and ending the test.
The overall heat preservation performance of the building can be calculated according to the following formula:
wherein the power consumption is obtained by adding the total power of the heater 4, the total power of the temperature controller 5, the total power of the power meter 6 and the total power of the recorder 8, and the building area (m 2 ) The internal and external temperature difference (K) is obtained by subtracting the average value of the six temperatures acquired in the steady-state stage of all the temperature sensors 7 in the building standard layer structure 100 to be detected from the average value of the six temperatures acquired in the steady-state stage of all the temperature sensors 7 in the laboratory main body 10 according to the size measurement of the building standard layer 100 to be detected. The value of Q represents the heat loss of the building under the unit temperature difference of unit area. The smaller the Q value is, the building mark to be detected is representedThe better the overall thermal insulation performance of the quasi-layered structure 100.
The working principle of the technical scheme is as follows:
according to the invention, the building standard layer structure 100 to be detected is formed into an experimental space in the laboratory main body 10, and then the standard layer is divided into a plurality of room 101 areas, so that further performance detection experiments of building heat preservation are facilitated, the laboratory main body 10 is provided with the crane, carrying work of the building standard layer structure 100 to be detected can be facilitated, and the sunlight connecting frame 43 connected with the lifting moving mechanism 42 is further provided, so that the temperature and humidity and sunlight intensity of the external environment of the building standard layer structure 100 to be detected can be controlled and regulated, and the actual outdoor condition is simulated, so that the experiment can be normally performed, in addition, the heater 4 connected with the temperature controller 5 can well control the heating temperature, and the recorder 8 connected with the temperature sensor 7 can record and store the temperature data in real time, so that corresponding feedback display can be performed.
In the method for detecting the overall heat preservation performance of the building, an experiment platform is firstly built, the indoor temperature of a laboratory main body 10 and the indoor temperature of a building standard layer structure 100 to be detected are set to be fluctuated and changed within a certain range, then the average temperature change per hour of a temperature sensor 7 in the laboratory main body 10 and the temperature sensor 7 of the building standard layer structure 100 to be detected is not more than 0.5 ℃, so that the stability of the test temperature is maintained, and when the absolute value of the change per hour of the working power of each heater 4 measured by an electric power meter 6 is not more than 3% of rated power, the loss heat of the heater 4 in a continuous heat supply state can be supplemented, the influence on experimental data is avoided, and the whole test is enabled to reach a stable state.
In addition, the absolute value change is set in a threshold value calculation mode, so that the situation that the calculation is inaccurate when the data has larger contrast and is not in a corresponding critical value can be effectively avoided, if the data has a wavy line or is in a fluctuation state, the calculation range of the decision value of the direct change is inaccurate, that is, if the difference value is larger, the damage of a wall body or corresponding equipment can be directly indicated, and whether the test really reaches a stable state can be well indicated.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. The utility model provides a building integral thermal insulation performance detects main part, includes laboratory main part (10), its characterized in that, be fixed with on the bottom plate of laboratory main part (10) and wait to detect building standard layer structure (100), be divided into a plurality of rooms (101) through the wall body in waiting to detect building standard layer structure (100), all install heater (4), temperature controller (5), temperature sensor (7), electric meter (6) and record appearance (8) in room (101), take a breath ventilation hole (104) and refrigeration ventilation through-hole (105) are formed on the curb plate of laboratory main part (10);
the solar radiation simulation device comprises a laboratory main body (10), and is characterized by further comprising solar radiation simulation equipment (40), wherein the solar radiation simulation equipment (40) comprises a transverse connecting beam (41) arranged at the top of the laboratory main body (10), a lifting moving mechanism (42) is arranged on the transverse connecting beam (41), a hanging body is hung on a lifting hook of the lifting moving mechanism (42), a sunlight connecting frame (43) is fixed on the bottom surface of the hanging body, and a plurality of sunlight illuminating bodies are fixed on the bottom surface of the sunlight connecting frame (43).
2. The main body for detecting the overall heat insulation performance of the building according to claim 1, wherein a plurality of spacing blocks (102) are fixed at the bottom of the building standard layer structure (100) to be detected, and the spacing blocks (102) form a spacing layer (103) between the building standard layer structure (100) to be detected and the bottom plate of the laboratory main body (10).
3. The main body for detecting the overall heat preservation performance of the building according to claim 1, wherein the supporting rods (9) are fixed in the room (101), the top ends of the supporting rods (9) are fixed on the top surface of the room (101), the bottom ends of the supporting rods (9) are fixed on the bottom surface of the room (101), and the temperature sensors (7) are fixed on the upper portion and the lower portion of the supporting rods (9).
4. A building integrated insulation performance detecting body according to claim 3, characterized in that the two temperature sensors (7) of the room (101) are 0.5m from the ground and 0.5m from the top surface, respectively.
5. The main body for detecting the heat preservation performance of the whole building according to claim 1, wherein the refrigerating ventilation through hole (105) is communicated with a cold air outlet of a refrigerating system arranged outside the main body (10) of the laboratory, and the ventilation through hole (104) is communicated with an air outlet of a ventilation device arranged outside the main body (10) of the laboratory.
6. The main body for detecting the overall heat preservation performance of the building according to claim 1 is characterized in that the indoor temperature sensor (7) and the recorder (8) are installed on the top surface of the bottom plate of the laboratory main body (10) around the building standard layer structure (100) to be detected, the top surface of the building standard layer structure (100) to be detected and the top surface of the bottom plate of the laboratory main body (10) below the building standard layer structure (100) to be detected.
7. The method for detecting the body for detecting the heat preservation performance of the whole building according to any one of claims 1 to 6, comprising the following steps:
s1, building a standard layer structure (100) of the building to be detected in a laboratory main body (10) according to the actual size, the actual peripheral protection method and the actual adopted heat insulation material of the building to be detected;
s2, dividing the building standard layer structure (100) to be detected into a plurality of rooms (101) through walls, wherein a heater (4), a temperature controller (5), a temperature sensor (7), an electric meter (6) and a recorder (8) are arranged in each room (101) to record the temperature of the corresponding room (101);
s3, arranging a plurality of temperature sensors (7) around the building standard layer structure (100) to be detected, and measuring the indoor temperature of the laboratory main body (10);
s4, starting a refrigerating system outside the laboratory main body (10), setting the indoor temperature of the laboratory main body (10) to be 0 ℃, synchronously starting heaters (4) of all rooms (101) in the building standard layer structure (100) to be detected, and setting the indoor temperature of the building standard layer structure (100) to be detected to be 20 ℃;
s5, opening a recorder (8) to collect data of a temperature sensor (7), wherein data are collected every 5S;
s6, when the temperature of the laboratory main body (10) is constant above and below 0 ℃, the indoor temperature of the building standard layer structure (100) to be detected is constant above and below 20 ℃, the average temperature of all the temperature sensors (7) of the laboratory main body (10) and the average change absolute value per hour of all the temperature sensors (7) in the building standard layer structure (100) to be detected are not more than 0.5 ℃, and the change absolute value per hour of the working power of each heater (4) measured by the electric power meter (6) is not more than 3% of rated power, the whole test reaches a steady state;
s6.1, recording indoor temperature data of the laboratory main body (10) and the building standard layer structure (100) to be detected through a temperature sensor (7), simultaneously displaying on a curve change chart and comparing with a set constant temperature, and automatically adjusting output power for a heater (4) in a room (101) and a refrigerating system outside the laboratory main body (10) when the temperature change range exceeds the range of +/-0.5 ℃ of the set constant temperature so that the temperature reaches the required set range;
s6.2, subtracting the threshold value of the change of the average temperature of the temperature sensor (7) in the laboratory main body (10) per hour, and checking whether the temperature sensor (7) and the wall body are damaged or not when the absolute value of data is larger than 1 ℃;
s6.3, subtracting the threshold value of the change of the working power of each heater (4) per hour, and checking whether the heater (4) and the wall body are damaged or not when the absolute value of data is more than 6% of rated power;
and S7, measuring the temperature of the laboratory main body (10) and the indoor temperature of the building standard layer structure (100) to be detected at intervals of 30 minutes in a steady state stage, measuring six times in total, calculating the average value of the six groups of data, and ending the test.
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