CN115540135B - Large-space building rectangular column wall variable working area adaptive air supply device - Google Patents
Large-space building rectangular column wall variable working area adaptive air supply device Download PDFInfo
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- CN115540135B CN115540135B CN202211138114.3A CN202211138114A CN115540135B CN 115540135 B CN115540135 B CN 115540135B CN 202211138114 A CN202211138114 A CN 202211138114A CN 115540135 B CN115540135 B CN 115540135B
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- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 abstract description 15
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- 239000003344 environmental pollutant Substances 0.000 description 2
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Abstract
The invention belongs to the technical field of heating ventilation air conditioning systems, and discloses a large-space building rectangular column wall variable working area adaptive air supply device which comprises a plurality of correspondingly arranged fresh air supply openings and guide plates, wherein the fresh air supply openings are arranged at the top of a building and are arranged around the outer wall of a rectangular column, the guide plates are arranged on the outer wall of the rectangular column, the height of the guide plates is adjustable, gaps are formed between the guide plates and the outer wall of the rectangular column, the width of the gaps is smaller than the jet characteristic thickness, and air return openings are respectively arranged on the side walls of the building corresponding to the guide plates.
Description
Technical Field
The invention belongs to the technical field of heating ventilation air conditioning systems, and particularly relates to a large-space building rectangular column wall variable working area adaptive air supply device which is based on a partition air supply principle and utilizes rectangular column walls to realize air supply.
Background
The urban process is accelerated, large-space buildings are increasingly built, and the large-space buildings gradually develop into the underground along with more three-dimensional urban space. Compared with other buildings, the building space is large in scale and large in personnel density, such as underground markets, subway stations and the like with high daily people flow density, and the buildings adopt more mixed air supply modes, particularly for more airtight underground space buildings, so that a reasonable air flow organization form is particularly important for providing fresher air for people.
The airflow organization form is the direct embodiment of the tail end of the ventilation air conditioning system, and has direct and important influence on the action effect of the ventilation air conditioning system and the thermal comfort of personnel in a large-space building. The mixed air supply airflow organization mode adopted by the existing large-space building is that an air supply port is generally arranged at a place higher than a control area, and the sent air needs to be mixed with the polluted air at the top and then sent into the area where personnel move. In other words, the traditional air supply mode treats the whole space as an environment protection area, so that the air quantity to be treated is large, the heat/humidity load is high, the energy consumption of an air conditioning system is huge, and the energy is seriously wasted. On the other hand, because the fresh air sent out by the traditional mixed air supply mode air port needs to be mixed with top polluted air, the air sent into a personnel activity area is polluted, the comfort and the cleanliness are poor, and various bacteria and viruses are easy to spread. In practice, the working area where the temperature and humidity are required to be controlled manually only occupies a part of the whole large space, namely the area where the personnel often stay. The working area of the high-rise building system is usually only below the standing height (1.7 m) of personnel or below the sitting height (1.1 m) of personnel, and if the space without personnel activity on the upper part is ignored, clean air is directly fed into the working area, so that the air supply load can be reduced, the air supply temperature can be improved, the air quality of the working area can be effectively improved, and a large amount of energy sources can be saved. In large space, the rectangular column structure is visible everywhere, so the design of the air supply device capable of directly supplying fresh air into the working area by utilizing the large space column structure is valuable and meaningful.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the large-space building rectangular column wall variable working area adaptive air supply device based on the partition air supply principle, which can effectively improve the air quality and the personnel thermal comfort of a large-space building control area, reduce the energy consumption, and has the advantages of easy arrangement and no occupation of the lower space of a building.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a big space building rectangle post wall becomes working area adaptability air supply arrangement, includes new trend supply-air outlet and the guide plate that a plurality of correspondence set up, new trend supply-air outlet sets up at the building top and around rectangle post outer wall setting, the guide plate sets up on the rectangle post outer wall and highly adjustable, there is the gap between guide plate and the rectangle post outer wall, gap width is less than jet characteristic thickness, all be provided with an return air inlet on the building lateral wall that the guide plate corresponds.
Further, the rectangular column is vertically provided with a plurality of groups of thin vertical pipes, each group of thin vertical pipes comprises two thin vertical pipes, an L-shaped sliding block is arranged in each thin vertical pipe, the height of each L-shaped sliding block is adjustable, and a guide plate is connected with the connecting end of each L-shaped sliding block and used for fixing the guide plate on the side wall of the rectangular column.
Further, the guide plate is connected with the connecting end of the L-shaped sliding block through a drawing sliding rail, and the drawing sliding rail is used for adjusting the gap width between the guide plate and the outer wall of the rectangular column.
Further, the width of the guide plate is 2-3 times of the jet characteristic thickness of the air supply jet reaching the guide plate, and the calculation formula of the jet characteristic thickness is as follows:
δ0.5＝a(y*+c)
Wherein a and c are experimental constants and are determined by the deflection distance of the air supply; y * is the distance from any point in the vertical direction of the supply air flow to the fresh air supply port.
Further, the ratio of the width of the gap to the width of the fresh air supply opening corresponding to the guide plate is 0-3.
Further, the height setting range of the guide plate is the height of the human breathing zone in the public area.
Further, the deflector is a square or semi-square or quarter-square deflector surrounding the circumference of the rectangular column.
Further, the guide plate is arranged on the outer wall surface of one side or more sides of the rectangular column.
Further, a plurality of guide plates are arranged at the same height of the outer wall surface of the rectangular column.
Further, a plurality of the deflectors are arranged at different heights on the outer wall surface of the rectangular column.
Compared with the prior art, the invention has at least the following beneficial effects:
The invention provides a large-space building rectangular column wall variable working area adaptive air supply device, which is based on the partition air supply principle, and the air flow moving downwards along the column wall is divided into two parts by arranging a guide plate at a position with a certain slit width from the column wall, wherein one part of fresh air impacts the guide plate to deviate the flow direction and is directly sent into a human breathing area, so that the air quality around personnel can be effectively improved, and uncontaminated air can be provided as much as possible; the other part of fresh air continues downwards through the gaps until an air lake area is formed after the ground, so that the temperature difference between the head and the foot can be obviously reduced, and the uncomfortable feeling caused by the temperature difference between the head and the foot is relieved. Compared with the traditional air supply mode, the invention utilizes the cylinder structure widely existing in the existing large-space building to send the air flow of the air supply into the control area as completely as possible, and can reduce the loss caused by fresh air passing through the non-air-conditioning control area at the top of the large space, thereby reducing the air supply load by moderately improving the air supply temperature or reducing the air supply quantity and effectively saving the energy consumption. On the other hand, the invention is not limited by the change of the use, the change of seasons and the difference of users, can flexibly adjust the height of the guide plate device and the width of the strip seam according to the actual control requirement, achieves the effect of changing the working area, ensures the hot and humid environment and the air quality of the control area, improves the respiratory quality while improving the thermal comfort of a human body to a limited extent, enhances the airflow organization effect and the ventilation energy efficiency of an air conditioning system of a large-space building, has the advantages of comfort, health, flexibility and energy conservation, and has practical significance and good application prospect.
Drawings
FIG. 1 is a schematic diagram of a construction of a rectangular column wall variable working area adaptive air supply device for a large-space building;
FIG. 2 is a schematic diagram of the airflow organization of a large-space building rectangular column wall variable working area adaptive air supply device;
FIG. 3 is a diagram of a large-space building rectangular column wall variable working area adaptive air supply device fixing device;
FIG. 4 is a schematic diagram of the connection of the baffle to the L-shaped slider;
FIG. 5 is a cloud chart of air supply speed of a rectangular column wall variable working area of a large-space building under orthogonal experimental conditions;
FIG. 6 is a graph of a fitting of orthogonal experimental results;
FIG. 7 shows temperature field distribution diagrams of a hybrid ventilation mode (1), a column wall attached air supply mode (2), and a variable working area air supply mode (3);
FIG. 8 is a velocity field distribution diagram of the hybrid ventilation mode (1), the column wall attachment air-blowing mode (2), and the variable working area air-blowing mode (3);
Fig. 9 shows air age distribution diagrams of the hybrid ventilation mode (1), the column wall attachment air supply mode (2), and the variable work area air supply mode (3).
In the accompanying drawings: 1-a new air pipe; 2-a fresh air valve; 3-a fresh air processor; 4-an air supply pipe; 5-an air supply valve; 6-a fresh air supply port; 7-rectangular columns; 8-a deflector; 9-an air return port; 10-an air return pipe; 11-an exhaust valve; 12-an exhaust pipe; 13-an air return valve; 14-a thin vertical pipe; 15-L-shaped sliding blocks; 16-drawing slide rail.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings and detailed description. The following examples or figures are illustrative of the invention and are not intended to limit the scope of the invention.
The existing ventilation air flow organization technology cannot complete accurate zone control, and only fresh air can be mixed with top polluted gas and then sent to the bottom of a room, and the fresh air cannot directly reach a control zone; as shown in fig. 2, the adaptive air supply device for the rectangular column wall variable working area of the large-space building can control indoor thermal environments in a partitioned manner, the flow guide and the flow distribution of air supply flow are realized by additionally arranging the guide plates with gaps, the thermal environments of areas with different heights can be simultaneously controlled, fresh air is directly supplied to an effective area, and the air supply distribution can be adjusted by adjusting the gap areas of the guide plates and the wall surfaces, so that the air flow organization effect and the ventilation energy efficiency of an air conditioning system of the large-space building are improved, and the adaptive air supply device has practical significance and good application prospect.
Referring to fig. 1, the invention provides a large-space building rectangular column wall variable working area adaptive air supply device, which comprises a plurality of fresh air supply openings 6 arranged at the top of a building, wherein the fresh air supply openings 6 are arranged around the outer wall of a rectangular column, a plurality of guide plates 8 are arranged on the outer wall surface of the rectangular column according to a specific construction process, and the guide plates 8 can be arranged at the same height or at different heights along different directions according to actual requirements so as to meet individual requirements of people. The fresh air supply opening 6 and the guide plates 8 are the same in number and are correspondingly arranged, gaps are arranged between the guide plates 8 and the wall surfaces of the rectangular columns, and the gap width of the gaps can be flexibly arranged according to flow ratios required by different directions.
The fresh air supply opening 6 is connected with an air outlet of the fresh air processor 3 through an air supply valve 5, and an air inlet of the fresh air processor 3 is communicated with an air outlet of the fresh air pipe 1; the air inlet of the new air pipe 1 is arranged outdoors, and a new air valve 2 is arranged on the new air pipe 1.
The air return port 9 is communicated with the air inlet end of the air return pipe 10, the first air outlet of the air return pipe 10 is communicated with the fresh air pipe 1 through the air return valve 13, and the second air outlet of the air return pipe 10 is communicated with the exhaust pipe 12 through the exhaust valve 11.
As shown in fig. 3 and 4, a plurality of groups of thin vertical pipes 14 are arranged on the side wall of the rectangular column, each thin vertical pipe 14 is provided with an L-shaped sliding block 15, the height of each L-shaped sliding block 15 is adjustable, each group of thin vertical pipes 14 comprises two thin vertical pipes 14, two ends of a guide plate 8 are respectively connected with the connecting ends of one L-shaped sliding block 15, the two L-shaped sliding blocks 15 are respectively fixed in the two thin vertical pipes 14 of one group of thin vertical pipes 14, the purpose of fixing the guide plate 8 on the side wall of the rectangular column is achieved, the movement of the upper and lower positions of the guide plate 8 can be achieved by adjusting the height of the L-shaped sliding blocks 15, and the height of the guide plate 8 is adjusted according to environments of different working areas;
Preferably, a fixing hole is reserved on the thin vertical pipe 14, and the fixing of the L-shaped sliding block 15 is realized by inserting a fixing pin into the fixing hole;
preferably, the thin vertical tube 14 is vertically disposed on a side edge of the rectangular column.
Preferably, each set of thin vertical tubes 14 is disposed on the same side wall of the rectangular column.
Preferably, the guide plate 8 is connected with the connecting end of the L-shaped sliding block 15 through a drawing sliding rail 16, and the adjustment of the gap width between the guide plate 8 and the rectangular column wall surface is realized through the drawing sliding rail 16.
The fresh air supply port 6 supplies air downwards along the rectangular column wall, and the air supply jet flow is attached to the vertical wall surface of the rectangular column under the action of pressure difference due to the fact that the flow velocity of the air supply jet flow close to the vertical wall surface is large and the static pressure is small, and the static pressure is large at the position far from the vertical wall surface, so that an effect is formed. When the jet flow moves downwards to reach the guide plate 8, the airflow collides with the guide plate 8 to deflect and is sent into a human breathing zone; and the other part of the air flow passes through the strip gap between the guide plate 8 and the rectangular column wall, collides with the floor and is sent to the bottom working area.
Preferably, the fresh air supply port 6 is a return port surrounding the top of the rectangular column, an adjustable line seam air port is arranged at the fresh air supply port 6, and under the condition of certain air supply parameters, the flow distribution effect is realized by adjusting the relevant parameters such as the width of a gap between the flow guide plate 8 and the rectangular column wall, the size of the flow guide plate and the like, and the flow guide plate flow distribution and the air transmission rate are adjusted to meet the parameter requirements of different areas.
Preferably, the baffle 8 may be a circular baffle surrounding the circumference of a rectangular column or a semi-circular, quarter-circular, etc.;
preferably, the deflector 8 is arranged on the outer wall surface of one side or more sides of the rectangular column;
preferably, the width of the guide plate 8 is 2-3 times (which can be obtained by a characteristic thickness calculation formula before design) the characteristic thickness of the jet flow of the air supply jet flow reaching the guide plate 8, and the ratio of the width of a gap between the guide plate 8 and the rectangular column wall to the width of the fresh air supply port 6 corresponding to the guide plate 8 is generally set to be 0-3;
preferably, the width of the gap between the guide plate 8 and the rectangular column wall is adjusted according to the actual target area requirement and is smaller than the characteristic thickness of jet flow;
Preferably, the height setting range of the guide plate 8 is that the height of the human body breathing zone in the public area comprises the heights of standing and sitting breathing zones of people with different ages, namely children to adults, and the actual height of the heat source which needs to be cooled indoors can be correspondingly adjusted.
When in use, the outdoor fresh air is mixed with the indoor return air through the fresh air pipe 1 and the fresh air valve 2; the mixing proportion of the fresh air and the return air is regulated by controlling the opening sizes of the fresh air valve 2 and the return air valve 13. The mixed air is processed by a fresh air processor 3 and then is sent into a room through an air supply pipe 4 and an air supply valve 5 through an adjustable strip slit air port 6 arranged at the top of the room and close to a side wall, and then an attached jet flow is formed; wherein, a part of the air flow is impacted on the guide plate 8 to deflect and is directly sent into the breathing zone of the human body; the other part of the air flow passes through the thin seam between the guide plate 8 and the rectangular column wall and is deflected with the bottom floor to be sent into the bottom working area. The opening of the air supply valve 5 is adjusted to control the air flow speed sent out by the fresh air supply port 6. The air flow is sent to carry away the pollutant (gas) generated by the internal human body (heating equipment), so that the heat and the pollutant (gas) can be discharged out of the room after passing through the air return opening 9, the air return pipe 10, the air exhaust valve 11 and the air exhaust pipe 12.
Example 1
As shown in fig. 5 and 6, the flow dividing effect of the flow guide plate 7 is measured by taking the ratio q of the flow of the gap between the flow guide plate 8 and the rectangular column wall to the total flow as an index, a large number of column structures exist in a large-space building, and the flow fields around each column in the large-space building are considered to be similar, so that a single column and the surrounding space thereof are selected for numerical simulation research by the column model, the gap width between the flow guide plate 7 and the rectangular column wall, the jet characteristic thickness and the rectangular column span are selected as main influencing factors to carry out orthogonal experimental design, namely 3 factors, and the jet characteristic thickness delta 0.5 has a calculation formula:
δ0.5＝a(y*+c)
Wherein a and c are experimental constants, and relate to deflection distance of air supply, namely normal distance between the inner side of the fresh air supply port 6 and the wall surface, and in the invention, the normal distance between the fresh air supply port 6 and the wall surface of the rectangular column is zero, namely the deflection distance is zero, a=0.091, and c=0.747; y * is the distance from any point in the vertical direction of the air supply flow to the fresh air supply port 6, and the fresh air supply port 6 is arranged at the top of the rectangular column, namely the difference between the height of the rectangular column and the height of the point.
According to the calculation formula, the change of the jet characteristic thickness can be realized by changing the height of the guide plate 8, so that the ratio of the gap width of the guide plate 8 to the rectangular column wall to the width of the fresh air supply opening 6 is 1, 2 and 3, the heights of the guide plate are 1.1m, 1.4m and 1.7m, the spans of the rectangular column take values of 6m, 9m and 12m, and each factor is 3, and the following 9 working conditions are all selected:
TABLE 1 orthogonal experiment Condition table
Fig. 5 is a cloud chart of the splitting effect of different design parameters under 9 conditions. And processing simulation results of the 9 test conditions. Considering entrainment of jet flow, the flow rate Q of entrainment of the section under the condition that the baffle 7 is not arranged at the height of the baffle 7 is calculated according to the following formula:
Q 0 is the fresh air flow, i.e. the product of the area of the air supply opening and the air supply speed, u 0 is the air supply speed, and b is the width of the fresh air supply opening. And then deriving a slit flow value calculated by numerical simulation, wherein the result is shown in the following table:
TABLE 2 flow ratio
The analysis of variance procedure of the orthogonal experimental results is listed in the following table:
TABLE 3 analysis of variance table of orthogonal experimental results
QA＝UA-P,QB＝UB-P,Qc＝UC-P,QT＝W-P
QE＝QT-QA-QB-Qc
TABLE 4 analysis of variance table of orthogonal experimental results
F 5％(2,2)＝19,FA,FB is larger than 19, which indicates that the distance between the baffle 8 and the rectangular column wall and the height of the baffle have significant influence on the flow ratio, F B < 19 indicates that the influence of the height of the baffle 8 is smaller, F C has the smallest influence, namely the influence of the gap width is largest, the height of the baffle 8 is inferior, and the influence of the span of the rectangular column can be ignored.
The height of the deflector 8 is the characteristic thickness of the jet flow, and according to the analysis result, the parameters of the flow ratio q, the gap width x and the jet flow characteristic thickness delta 0.5 are subjected to dimensional analysis, the flow ratio q is dimensionless, obviously, the relation formula can be written as q=f (x/delta 0.5), the curve shown in fig. 6 is obtained by fitting the simulation experiment result, and the relation formula of the flow ratio q about the gap width x and the jet flow characteristic thickness delta 0.5 is obtained:
Example 2
The room size of the embodiment is 9m multiplied by 4m, the cold load index is 160W/m 2, the air supply temperature is 18.5 ℃, the air supply speed is 3.42m/s, and the air supply is respectively carried out by adopting a mixed ventilation mode, a column wall attached air supply mode and a variable working area air supply mode, wherein the specific parameters of the invention are that the gap width is 0.05m, the width of a return air inlet is 0.05m, the height of a guide plate 8 from a bottom plate is 1.7m, and the column wall attached air supply mode is the same as the invention except that the guide plate 8 is not arranged; the parameters of the mixed ventilation were tuyere sizes of 0.325m×0.325m, and 2 tuyeres were arranged along the room length direction at positions of 3m, 6m from the room top 0.2 m.
As shown in FIG. 7, comparing the temperature fields of three different air supply modes, the temperature distribution of the whole room in the mixed ventilation mode is uniform, and the temperature in the control area is mostly between 31 ℃ and 32 ℃; the column wall attached air supply has obvious temperature layering in the vertical direction, a thin air lake layer is formed close to the ground, and the temperature in a control area is between 30 ℃ and 32 ℃; the air supply of the variable working area also presents the phenomenon of vertical temperature layering, and under the combined action of the ground air lake of the air flow of the guide plate, the air lake area becomes thick, and the temperature in the control area is between 29 ℃ and 31 ℃. Under the same air supply parameters, the variable working area air supply can create a lower-temperature environment in the control area, namely, the invention can set higher air supply temperature under the condition of meeting the requirement of the same environment temperature, and has better energy-saving effect.
As shown in fig. 8, comparing the velocity fields in the three air supply modes, it can be found that the velocity in the mixed ventilation control zone is between 0.2m/s and 0.4 m/s; attaching air supply to the column wall to form a most uniform speed field in a control area, wherein the speed is within 0.2 m/s; the air flow of the guide plate is influenced in the air supply control area of the variable working area, the air flow is stronger, the speed is between 0.2m/s and 0.8m/s, and compared with other two air supply modes, the air supply control area has slightly blowing sense and is still in the allowable range.
As shown in FIG. 9, the air ages of the air flows in the control area of the mixed ventilation mode are between 450s and 500s, the air ages in the control area of the column wall attached air supply mode are between 450s and 525s, and the air ages in the control area of the working area are only between 350s and 475s, so that the air ages are reduced by 11 to 25 percent, which means that the air supply mode can provide fresh air as much as possible for people and effectively improve the air quality of the breathing area.
In summary, by adopting the air supply mode, the heat environment in the control area can be improved to a greater extent under the condition of the same energy consumption, the energy-saving effect is improved, and the air flow of the guide plate is directly sent to the breathing area, so that the air quality of the breathing area of a human body can be effectively improved.
Claims (10)
1. The utility model provides a big space building rectangle post wall becomes working area adaptability air supply arrangement, its characterized in that, including new trend supply-air outlet (6) and guide plate (8) that a plurality of correspondence set up, new trend supply-air outlet (6) are offered at the building top and are set up around the rectangle post outer wall, guide plate (8) set up on the rectangle post outer wall and highly adjustable, there is the gap between guide plate (8) and the rectangle post outer wall, gap width is less than jet characteristic thickness, all be provided with an return air inlet (9) on the building lateral wall that guide plate (8) correspond.
2. The large-space building rectangular column wall variable working area adaptive air supply device according to claim 1, wherein a plurality of groups of thin vertical pipes (14) are vertically arranged on the rectangular column, each group of thin vertical pipes (14) comprises two thin vertical pipes (14), an L-shaped sliding block (15) is arranged in each thin vertical pipe (14), the height of each L-shaped sliding block (15) is adjustable, and a connecting end of each guide plate (8) and each L-shaped sliding block (15) is connected to fix the guide plate (8) on the side wall of the rectangular column.
3. The large-space building rectangular column wall variable working area adaptive air supply device according to claim 2, wherein the guide plate (8) is connected with the connecting end of the L-shaped sliding block (15) through a drawing sliding rail (16), and the drawing sliding rail (16) is used for adjusting the gap width between the guide plate (8) and the outer wall of the rectangular column.
4. The large-space building rectangular column wall variable working area adaptive air supply device according to claim 1, wherein the width of the guide plate (8) is 2-3 times of the jet characteristic thickness of the air supply jet reaching the guide plate (8), and the jet characteristic thickness is calculated by the following formula:
δ0.5＝a(y*+c)
wherein a and c are experimental constants and are determined by the deflection distance of the air supply; y * is the distance from any point in the vertical direction of the air supply flow to the fresh air supply port (6).
5. The large-space building rectangular column wall variable working area adaptive air supply device according to claim 1, wherein the ratio of the width of the gap to the width of the fresh air supply opening (6) corresponding to the guide plate (8) is 0-3.
6. The large-space building rectangular column wall variable working area adaptive air supply device according to claim 1, wherein the height setting range of the guide plate (8) is the height of the human body breathing area in the public area.
7. The large-space building rectangular column wall variable working area adaptive air supply device according to claim 1, wherein the guide plate (8) is a square-shaped or semi-square-shaped or quarter-square-shaped guide plate surrounding the periphery of the rectangular column.
8. The large-space building rectangular column wall variable working area adaptive air supply device according to claim 1, wherein the guide plate (8) is arranged on the outer wall surface of one or more sides of the rectangular column.
9. The large-space building rectangular column wall variable working area adaptive air supply device according to claim 1, wherein a plurality of guide plates (8) are arranged at the same height of the outer wall surface of the rectangular column.
10. A large-space building rectangular column wall-change working area adaptive air supply device according to claim 1, characterized in that a plurality of the deflectors (8) are arranged at different heights of the outer wall surface of the rectangular column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211138114.3A CN115540135B (en) | 2022-09-19 | Large-space building rectangular column wall variable working area adaptive air supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211138114.3A CN115540135B (en) | 2022-09-19 | Large-space building rectangular column wall variable working area adaptive air supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115540135A CN115540135A (en) | 2022-12-30 |
| CN115540135B true CN115540135B (en) | 2024-07-09 |
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Non-Patent Citations (1)
| Title |
|---|
| 甘甜.地下大空间变工作区贴附送风空气分布特性.《地下空间与工程学报》.2024,第第20卷卷(第第1期期),第344-350. * |
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