CN213630779U - Indoor building cold water replacement ventilation system - Google Patents
Indoor building cold water replacement ventilation system Download PDFInfo
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- CN213630779U CN213630779U CN202022403542.7U CN202022403542U CN213630779U CN 213630779 U CN213630779 U CN 213630779U CN 202022403542 U CN202022403542 U CN 202022403542U CN 213630779 U CN213630779 U CN 213630779U
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Abstract
The utility model belongs to the technical field of indoor refrigeration, and particularly discloses an indoor building cold water replacement ventilation system, wherein mutually communicated airflow channels are preset along the periphery of an indoor wall body, an airflow outlet is arranged below the airflow channels, and a movable baffle is arranged at the airflow outlet; the system comprises a ventilation assembly and a water chilling unit for preparing chilled water, wherein the ventilation assembly comprises a chilled water coil pipe spirally arranged at the top of an airflow channel, and a temperature sensor, a speed sensor and a controller which are arranged indoors, and the speed sensor is arranged at an airflow outlet; one end of the cold water coil pipe is connected with a water outlet of the water chilling unit through a chilled water valve, and the other end of the cold water coil pipe is connected with a water inlet of the water chilling unit; the temperature sensor, the speed sensor, the chilled water valve and the movable baffle are all connected with the controller, and the controller is used for controlling the opening sizes of the chilled water valve and the movable baffle. The space at the upper part of the room is saved, and the ventilation efficiency and the thermal comfort of the human body can be effectively ensured.
Description
Technical Field
The utility model belongs to the technical field of indoor refrigeration, concretely relates to indoor building cold water replacement ventilation system.
Background
Indoor air conditioning environments are becoming increasingly important in modern life. Conventional mixed air delivery has been difficult to meet people's needs for thermal comfort and for indoor air quality. The most effective method is to quickly discharge indoor pollutants and load and send fresh air to people as far as possible. Compared with mixed air supply, the replacement ventilation has higher ventilation efficiency, better air quality in a working area and can effectively meet the thermal comfort of a human body. Therefore, in the current air conditioning system, displacement ventilation is widely used.
In the existing replacement ventilation system, the air treated by the air conditioning unit is powered by power equipment and is sent to the indoor tail end through an air supply pipeline, so that the energy consumption of a fan is high, when the pipeline is long, the electric energy consumed by the power equipment is very large, and the initial investment and the operating cost are high. On the other hand, the fan often causes certain noise, which is particularly obvious when the fan is close to a human body. Meanwhile, the existing replacement ventilation air supply mode always has the problems that the air supply temperature difference and the air supply quantity are difficult to design, if the air supply temperature difference is small, the air supply quantity needs to be increased, so that the number and the size of air diffusers are increased, the equipment investment is increased, and the air diffusers are difficult to arrange; if the temperature difference of the air supply is large, the air supply temperature is inevitably reduced, and the temperature difference between the head and the feet is too large to be beneficial to the thermal comfort of the human body.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an indoor building cold water replacement ventilation system need not the furred ceiling, saves room upper portion space, can effectively guarantee the air quality and the human thermal comfort of work area in ventilation efficiency, the room.
The utility model discloses a realize through following technical scheme:
a cold water replacement ventilation system for an indoor building is characterized in that airflow channels which are communicated with each other are preset along the periphery of an indoor wall body of the indoor building, an airflow outlet is formed below the airflow channels, and a movable baffle is arranged at the airflow outlet; the system comprises a ventilation assembly and a water chilling unit for preparing chilled water, wherein the ventilation assembly comprises a chilled water coil pipe spirally arranged at the top of an airflow channel, and a temperature sensor, a speed sensor and a controller which are arranged indoors; the speed sensor is arranged at the airflow outlet;
one end of the cold water coil pipe is connected with a water outlet of the water chilling unit through a chilled water valve, and the other end of the cold water coil pipe is connected with a water inlet of the water chilling unit;
the temperature sensor, the speed sensor and the chilled water valve are all connected with the controller, the movable baffle is connected with the controller through the driving mechanism, and the controller is used for controlling the opening sizes of the chilled water valve and the movable baffle.
Furthermore, the water chiller set is arranged in the machine room and is connected with a water source.
Furthermore, the airflow channel is formed by a wall body and a partition plate arranged perpendicular to the ground, the partition plate is arranged around the inner side of the wall body, and a distance is reserved between the partition plate and the wall body.
Further, the driving mechanism comprises a motor and a lead screw nut mechanism, a guide rail for the movable baffle plate to slide is arranged on one side of the partition plate, which is contacted with the ground, one side of the movable baffle plate is connected with the motor through the lead screw nut mechanism, and the motor is connected with the controller;
when the guide rail is transversely arranged, the movable baffle plate transversely displaces, the height of the airflow outlet is unchanged, the width of the airflow outlet is changed, and the airflow outflow area is changed.
Furthermore, when a partition plate on one side is provided with a window, an airflow outlet is not arranged below the partition plate.
Furthermore, a heat insulation layer is arranged on the inner side of the partition board opposite to the wall body.
Further, the width of the air flow passage was 10 cm.
Further, temperature sensors were disposed at the airflow outlet and 0.6m from the ground.
Furthermore, a plurality of water pipe hanging frames are arranged on the upper portions of the wall body and the partition plate, and the water pipe hanging frames are used for placing the cold water coil pipes.
Further, the controller is of a SEMEN-BFA type.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model provides an indoor building cold water replacement ventilation system, cold water coil surround arrange on room upper portion and be close to the wall body on four sides, directly expose in the air, with the hot-air convection heat transfer in upper portion, do not need the furred ceiling. Under the action of pressure difference between the room and the air flow channel, the hot air is continuously collected to the cold water coil, the density of the cooled hot air is increased, the hot air sinks in the air flow channel due to the action of gravity and finally flows out from the lower air flow opening to form an air lake on the ground, the cold air rises along with hot plumes generated by human bodies and other heat sources, and the cold air is cooled by the cold water coil on the upper part of the room again after the temperature is increased, so that a gravity cycle is completed. The air supply mode can ensure the air quality of a breathing zone of a human body, reduces the mixing of fresh cold air and indoor hot air before reaching the ground, avoids energy waste caused by pipeline temperature rise compared with a full-air system with longer pipelines, and can freely adjust the size of an air flow opening at the lower part according to the change of the room load. During the installation, be equipped with temperature sensor, speedtransmitter and controller indoor, temperature sensor, speedtransmitter, valve and movable baffle all are connected with the controller, and the flow of controller control valve adjustment cooling water controls the displacement adjustment air current opening part's of movable baffle opening size simultaneously, can accomplish the indoor temperature of real-time regulation, satisfies user's demand.
Furthermore, when a partition plate on one side is provided with a window, an airflow outlet is not arranged below the partition plate, so that unnecessary energy waste caused by direct solar radiation heat radiation introduced by the outer window of cold air is avoided, the partition plate close to the outer window side is arranged around the outer window, and the cooled air on the outer window side sinks to other openings to flow out.
Furthermore, the heat-insulating layer is arranged on the inner side, opposite to the wall body, of the partition board, so that condensation caused by too low temperature when the partition board is in direct contact with cooled air is avoided, and meanwhile, the temperature rise of cold air in a partition board channel is reduced.
Further, the width of the airflow channel is designed to be 10cm, so that the problem that the width is too small to enable cold airflow to effectively flow into the channel is avoided; too wide a width occupies room space and tends to create dead zones in the baffle channels at very low speeds.
Drawings
Fig. 1 is a schematic structural view of a cold water displacement ventilation system for indoor buildings according to the present invention;
FIG. 2 is a schematic view of the displacement ventilation principle of the present invention;
FIG. 3 is a schematic view of the arrangement of the side partition boards of the outer wall of the present invention;
FIG. 4 is a schematic view of the water pipe hanger;
fig. 5 is a cross-sectional temperature distribution cloud chart of the present invention at a position where Z is 1.5 m;
fig. 6 is a cloud chart of the cross-sectional velocity distribution at 1.5m in the experiment of the present invention;
fig. 7 is a sectional temperature distribution cloud chart of the experiment of the present invention, where the two Z is 1.5 m;
fig. 8 is a sectional velocity distribution cloud chart of the experiment of the present invention, where the two Z is 1.5 m;
fig. 9 is a sectional temperature distribution cloud chart of the experiment of the present invention, where the three Z is 1.5 m;
fig. 10 is a cloud chart of the cross-sectional velocity distribution at 1.5m in the experiment of the present invention.
Wherein, 1 is the first baffle, 2 is the second baffle, 3 is the third baffle, 4 is the fourth baffle, 5 is first air current passageway, 6 is the second air current passageway, 7 is the third air current passageway, 8 is the fourth air current passageway, 9 is the cold water coil, 10 is the air current export, 11 is the water inlet, 12 is the delivery port, 13 is the door, 14 is the window, 15 is the water dish that congeals, 16 is the water pipe gallows, 17 is the supporting pad.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
As shown in fig. 1, the indoor building cold water replacement ventilation system of the present invention has mutually communicated airflow channels preset along the periphery of the indoor wall, an airflow outlet 10 is arranged below the airflow channels, and a movable baffle is arranged at the airflow outlet; the system comprises a ventilation assembly and a water chilling unit for preparing chilled water, wherein the ventilation assembly comprises a water chilling coil 9 which is spirally arranged at the top of an airflow channel, and a temperature sensor, a speed sensor and a controller which are arranged indoors; the speed sensor is arranged at the airflow outlet 10; one end of the cold water coil pipe 9 is connected with a water outlet of the water chilling unit through a chilled water valve, and the other end of the cold water coil pipe is connected with a water inlet of the water chilling unit; the output ends of the temperature sensor and the speed sensor are connected with the input end of the controller, the input end of the chilled water valve is connected with the control end of the controller, the movable baffle plate is connected with the controller through the driving mechanism, and the controller controls the opening sizes of the chilled water valve and the movable baffle plate according to the threshold values set by the temperature sensor and the speed sensor.
The water chilling unit is arranged in the machine room and is connected with a water source. The water chilling unit is also called as: a refrigerator, a refrigerating unit, an ice water unit, a cooling device, and the like. The water chilling unit comprises four main components: compressor, evaporimeter, condenser and expansion valve to the unit refrigeration heating effect has been realized.
The controller is SEMEN-BFA, and the water chilling unit can adopt a Bitzer screw type water chilling machine.
Specifically, in a room, a partition plate is preset around the inner side of a wall body, the partition plate is perpendicular to the ground, a space exists between the partition plate and the wall body, and the partition plate and the wall body form a communicated airflow channel; a cold water coil pipe 9 is spirally arranged at the top of the airflow channel, a water inlet 11 of the cold water coil pipe 9 is connected with a water outlet of a cold water unit through a chilled water valve, a water outlet 12 of the cold water coil pipe 9 is connected with a water inlet of the cold water unit, and return water is sent back to the cold water unit to be continuously cooled for recycling; an airflow outlet 10 is arranged below the partition plate, and a movable baffle is arranged at the airflow outlet 10; the indoor temperature sensor, the speed sensor, the switch and the controller are arranged, the temperature sensor, the speed sensor, the chilled water valve and the movable baffle are all connected with the controller, and the switch is connected with the water chilling unit, the chilled water valve and the controller through lines.
The cold water coil 9 has a gradient of 3 per mill, and a water condensation plate 15 is arranged at the lowest position of the coil. Because the cold coil is directly exposed in the indoor air, the chilled water supply temperature in the coil is generally 7 ℃, when the indoor air temperature is lower than the dew point temperature of the cold coil, condensed water can be generated after the cold coil is connected with the cold coil, the water condensation disc 15 is used for contacting the condensed water, and the gradient of 3 per thousand of the coil is also used for enabling the condensed water outside the pipeline to flow into the water condensation disc 15 along the wall surface of the pipeline.
As shown in fig. 1, a room with four walls is taken as an example to illustrate, wherein one wall is provided with a door 13, and a partition board is respectively arranged in each of the four walls, and the four partition boards include a first partition board 1, a second partition board 2, a third partition board 3 and a fourth partition board 4, and form four airflow channels with the four walls, specifically include a first airflow channel 5, a second airflow channel 6, a third airflow channel 7 and a fourth airflow channel 8, and the first airflow channel 5, the second airflow channel 6, the third airflow channel 7 and the fourth airflow channel 8 are communicated to form an airflow channel communicated with each other.
If the room has an external window, for example, a window 14 is opened on the fourth partition board 4 in fig. 1, an airflow opening is provided at the lower part of the first partition board 1, the second partition board 2 and the third partition board 3 near the ground, and a temperature sensor and a speed sensor are provided at the airflow opening. Generally, no airflow opening is provided at the lower part of the fourth partition 4, in order to avoid unnecessary energy waste caused by the direct heat exposure of the cold air by the solar radiation introduced from the outer window, the partition near the outer window side is disposed around the outer window, and the cooled air sinks to the remaining opening at the outer window side and flows out.
A temperature sensor is also arranged at the height of 0.6m of the room (the specific position is determined according to the actual condition of the room), and is used for observing the change of the room temperature and transmitting the signal of the temperature change to the controller; the temperature at the airflow opening, the velocity, the temperature at 0.6m height, the initial airflow opening width were used to calculate the required displacement of the baffle. The calculated temperature difference was calculated using the temperatures two 0.6m high before and after the change in the room load. If the temperature difference is larger than 0, the flow rate of the freezing water is increased, and the width of an airflow opening is increased; if the temperature difference is less than 0, the flow rate of the freezing water is reduced, and the width of the airflow opening is reduced. Similarly, the temperature difference is greater than 0, the calculated baffle displacement is positive, which can be understood as increasing the opening, and the temperature difference is less than 0, and the calculated baffle displacement is negative, which can be understood as decreasing the opening.
If the room does not have the exterior window, the arrangement of the partition boards on the four-side wall side is the same as that under the condition that the exterior window is arranged, the lower parts of the four-side partition boards are provided with air flow openings, and the air flow openings are provided with temperature sensors.
Be equipped with refrigerating unit in the computer lab, refrigerating unit is used for preparing the required refrigerated water of system, and the refrigerated water sends into cold water coil pipe 9's water inlet 11 via transmission and distribution pipe network pump to get into cold water coil pipe 9, cold water coil pipe 9 with collect the back of the heat transfer of coming around hot-air under the pressure differential effect, the hot-air temperature reduces, and density increase sinks in airflow channel, and cold air sinks in airflow channel to lower part air opening and flows.
Specifically, the cold water coil 9 is a galvanized copper pipe with a thickness of 1.5 mm.
The controller and the valve adopt WAP wireless communication protocol.
More preferably, the width of the air flow channel is designed to be 10cm, so as to avoid the width too small to make the cold air flow into the channel effectively; too wide a width occupies room space and tends to create dead zones in the baffle channels at very low speeds.
More preferably, the baffle material is the color plate internal splint rock wool, and thickness 2cm, and the internal surface is equipped with the heat preservation cotton, and the temperature is too low and the dewfall when avoiding with the air direct contact after being cooled, reduces the temperature rise of cold air in the baffle passageway simultaneously.
Preferably, a plurality of water pipe hangers 16 are arranged on the upper part of the wall body and the partition plate, and the water pipe hangers 16 are used for placing the cold water coil pipes 9. The water pipe hanger 16 may be made of channel steel, and a support pad 17 is provided on the inner wall of the channel steel on the side where the cold water coil 9 is placed.
Specifically, the highest position of the cold water coil 9 is flush with the upper part of the partition plate, and the distance from the uppermost part of the partition plate to the floor slab above is 10 cm.
Specifically, the width of an air flow channel formed by the wall and the four side partition plates is 10cm, and the central line of the cold water coil pipe 9 is 5cm away from the wall.
The side of the partition plate, which is in contact with the ground, is provided with a guide rail for the movable baffle plate to slide, one side of the movable baffle plate is connected with a motor through a screw and nut mechanism, the motor is connected with a controller, and the controller controls the positive and negative rotation of the motor and the rotation angle at each time so as to control the stretching of the screw and realize the displacement of the movable baffle plate.
When the guide rail is transversely arranged, the movable baffle transversely displaces, the height of the airflow outlet 10 is unchanged, the width of the airflow outlet is changed, and the airflow outflow area is changed; when the guide rail is longitudinally arranged, the movable baffle plate longitudinally displaces, the width and the height of the airflow outlet 10 are unchanged, and the airflow outflow area is changed.
The size of the airflow opening is determined according to the room load and the specific requirements, and the size of the airflow speed of the airflow opening can be determined by referring to a relation table of allowable wind speed and temperature of a working area in national civil building engineering design technical measures-heating ventilation air conditioning power, 2009 edition.
The temperature measurement was taken at a height of 0.6m, since experimental studies have shown that the human body feels comfortable at a temperature of 0.6 m.
Analysis of experiments
The room size is set up to 3000(X) 2600(Y) 3000(Z) (mm) according to actual conditions3) The numerical calculation model of (1) is that the room has no outer window, the total load of the room is 320W, the model is arranged on four persons, the rest faces keep heat insulation, the diameter of the cooling water pipe is 4mm, the wall thickness is 1.5mm, the total number of airflow openings is 4, the width is 400mm, the height is 100mm, the thickness of the partition board is 20mm, the height of the partition board is 2500mm, the distance from the wall surface is 100mm, the inlet speed of the cooling water is 0.06m/s, and the room temperature is setSet to 300K.
In order to verify the utility model discloses an air current tissue diffusion condition and indoor cooling effect choose for use average torrent energy model, and standard k-epsilon two equation model (standard k-epsilon model) solves the equation set promptly.
Dispersing the control equation by using a finite volume method, wherein a second-order windward format is selected as a discrete format, a SIMPLE algorithm is selected to solve the discrete equation after boundary conditions are introduced, and when the residual values of a speed term and a pressure term are both less than 10-3While the residual value of temperature is less than 10-6When the indoor air flow condition is obtained, the control equation system converges.
Fig. 4 is the utility model discloses an air supply mode is at Z1.5 m department cross-section's temperature distribution cloud picture, can obviously be seen from the picture, the utility model discloses an air supply mode can be with the effective cooling of room air when having no plus air supply power equipment at indoor pure natural convection, and room upper portion hot-air sinks to lower part air current opening part along airflow channel after being cooled down by cold water coil 9 and flows, forms cold air lake on ground, and the temperature layering appears in the room on the vertical direction, and under this operating mode, the difference in temperature of room 0.1m eminence and 1.1m eminence is less than 3 ℃, satisfies the designing requirement.
Fig. 5 is a speed distribution cloud chart of the cross section of the air supply mode of the present invention at Z ═ 1.5m, and it can be seen from the figure that the place with relatively high speed is located at the lower part of the room, wherein the maximum air speed in the whole room is 0.55m/s, according to the national civil building engineering design technical measure-heating ventilation air-conditioning power, the relation table of the allowable air speed and the temperature in the working area in 2009 edition can be obtained, and when the room temperature is 27 ℃, the allowable maximum flow speed in the working area is 0.5 m/s. In this embodiment, the maximum flow velocity of the working area is located at a position where X is 0.5, Y is 0.1, and Z is 1.5(m), and the velocity at this position is V is 0.49m/s, and it is calculated that the blowing sensation at the ankle is less than 20%, which satisfies the specification.
And 5, Y is 0.1, Z is 1.5(m), and the speed at the point is V is 0.49m/s, so that the specification requirement is met.
Experiment 2
This experiment is compared with experiment 1
The width of the gas flow opening in experiment 1 was set to 1.2m and the height was maintained at 0.1m, the remaining conditions being identical to those in experiment 1.
Fig. 6 is a temperature distribution cloud chart of a section at a position where Z is 1.5m in the experiment, and it can be seen from the cloud chart that when only the size of an airflow opening is changed and other conditions are kept unchanged, temperature stratification similar to example 1 can be formed, indoor hot air can be cooled by 2.5 ℃, and the temperature difference between the 0.1m high position and the 1.1m high position of a room is less than 3 ℃, and the requirement of the specification is met.
Fig. 7 is a speed distribution cloud chart of a cross section at a position where Z is 1.5m in the experiment, and it can be seen from the cloud chart that the maximum wind speed in a room is 0.3m/s, X is 0.5, Y is 0.1, and Z is 1.5(m), and the wind speed is 0.23m/s, which meets the design requirement.
Experiment 3
This experiment was compared with experiment 1 and experiment 2
The width of the gas flow opening in experiment 1 was set to 2.8m (the lower part of the partition was completely cut off), and the height was maintained at 0.1m, with the remaining conditions being kept the same as in example 1.
Fig. 8 is a temperature distribution cloud chart of a cross section at a position where Z is 1.5m in the experiment, and it can be seen from the cloud chart that when only the size of an airflow opening is changed and other conditions are kept unchanged, temperature stratification similar to the experiment 1 and the experiment 2 can be formed, indoor hot air can be cooled by 1.5 ℃, and the temperature difference between the high position of 0.1m and the high position of 1.1m in a room is less than 3 ℃, so that the specification requirement is met.
Fig. 9 is a speed distribution cloud chart of a cross section at a position where Z is 1.5m in the experiment, and it can be seen from the cloud chart that the maximum wind speed in a room is 0.2m/s, X is 0.5, Y is 0.1, and Z is 1.5(m), and the wind speed is 0.14m/s, which meets the design requirement. By comparing the three embodiments, it can be seen that as the area of the airflow opening at the lower portion of the partition increases, the temperature range over which the hot air in the room can be cooled decreases, and the amount of air that can be cooled increases, but still satisfies the heat balance equation
In traditional replacement ventilation system, send into the fresh air in the room and transport the room by power equipment after being handled by air handling unit, the utility model provides an unpowered replacement ventilation is sent into in the room for the refrigerated water, the specific heat of water is big, and energy storage capacity is far greater than the air, consequently handles the same room load, and the refrigerated water pipe diameter is far less than the tuber pipe, practices thrift room upper portion space. The traditional replacement ventilation can not process a large-load room, on one hand, the area of the air diffuser is limited, the air diffuser needs to be placed on the ground, the arrangement is difficult, and the use conditions of small air supply temperature difference and large air supply flow are limited; on the other hand, a cold air lake is formed on the ground by the replacement ventilation, a vertical temperature gradient occurs in a room, the head-foot temperature difference cannot exceed 3 ℃ specified in ASHRAE specifications, and the heat comfort of a human body is affected by the large-head-foot temperature difference, so that the use conditions of small air supply flow and large air supply temperature difference in the traditional replacement ventilation system are limited. The utility model provides an unpowered replacement ventilation air supply mode can be used to the room of summer heavy load, the air current opening size of baffle lower part is adjustable, in the heavy load room, increase the refrigerated water flow, cold coil pipe and air heat transfer volume increase, produce in more cold air gets into the baffle passageway, can increase the area of effluenting this moment, control the velocity of effluenting, avoid the foot to blow the sense problem, the change of the area of effluenting also can change the vertical temperature gradient in the room, can effectively solve the problem that the air diffuser is difficult to arrange in the traditional replacement ventilation system simultaneously.
Claims (10)
1. A cold water replacement ventilation system for an indoor building is characterized in that airflow channels which are communicated with each other are preset on the indoor building along the periphery of an indoor wall, an airflow outlet (10) is formed below the airflow channels, and a movable baffle is arranged at the airflow outlet (10); the system comprises a ventilation assembly and a water chilling unit for preparing chilled water, wherein the ventilation assembly comprises a chilled water coil (9) spirally arranged at the top of an airflow channel, and a temperature sensor, a speed sensor and a controller which are arranged indoors; the speed sensor is arranged at the airflow outlet (10);
one end of the cold water coil pipe (9) is connected with a water outlet of the water chilling unit through a chilled water valve, and the other end of the cold water coil pipe is connected with a water inlet of the water chilling unit;
the temperature sensor, the speed sensor and the chilled water valve are all connected with the controller, the movable baffle is connected with the controller through the driving mechanism, and the controller is used for controlling the opening sizes of the chilled water valve and the movable baffle.
2. The indoor building cold water displacement ventilation system of claim 1, wherein the chiller is disposed in a machine room, and the chiller is connected to a water source.
3. The indoor building cold water replacement ventilation system according to claim 1, wherein the air flow channel is formed by a wall and a partition plate arranged perpendicular to the ground, the partition plate is arranged around the inner side of the wall, and the partition plate is spaced from the wall.
4. The indoor building cold water displacement ventilation system according to claim 3, wherein the driving mechanism comprises a motor and a screw nut mechanism, a guide rail for the movable baffle plate to slide is arranged on one side of the partition plate, which is in contact with the ground, one side of the movable baffle plate is connected with the motor through the screw nut mechanism, and the motor is connected with the controller;
when the guide rail is transversely arranged, the movable baffle is transversely displaced, the height of the airflow outlet (10) is unchanged, the width of the airflow outlet is changed, and the airflow outflow area is changed.
5. An indoor building cold water replacement ventilation system according to claim 3, wherein when a window (14) is opened on one side of the partition, no airflow outlet (10) is provided under the partition.
6. The indoor construction cold water replacement ventilation system of claim 3, wherein an insulation layer is provided on the inner side of the partition opposite to the wall.
7. The indoor building cold water displacement ventilation system according to claim 1, wherein the width of the air flow channel is 10 cm.
8. The indoor building cold water displacement ventilation system according to claim 1, wherein the temperature sensor is arranged at the airflow outlet (10) and 0.6m away from the ground.
9. The indoor building cold water replacement ventilation system as claimed in claim 1, wherein a plurality of water pipe hangers (16) are arranged on the upper part of the wall body and the partition, and the water pipe hangers (16) are used for placing the cold water coil pipes (9).
10. The indoor building cold water replacement ventilation system according to claim 1, wherein the controller is of a type SEMEN-BFA.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022403542.7U CN213630779U (en) | 2020-10-26 | 2020-10-26 | Indoor building cold water replacement ventilation system |
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| CN202022403542.7U CN213630779U (en) | 2020-10-26 | 2020-10-26 | Indoor building cold water replacement ventilation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161364A (en) * | 2020-10-26 | 2021-01-01 | 西安建筑科技大学 | Indoor building cold water displacement ventilation system and control method thereof |
| CN113901595A (en) * | 2021-12-10 | 2022-01-07 | 中国飞机强度研究所 | Design method for aircraft APU (auxiliary Power Unit) exhaust system in laboratory |
-
2020
- 2020-10-26 CN CN202022403542.7U patent/CN213630779U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161364A (en) * | 2020-10-26 | 2021-01-01 | 西安建筑科技大学 | Indoor building cold water displacement ventilation system and control method thereof |
| CN112161364B (en) * | 2020-10-26 | 2024-03-26 | 西安建筑科技大学 | Indoor building cold water replacement ventilation system and control method thereof |
| CN113901595A (en) * | 2021-12-10 | 2022-01-07 | 中国飞机强度研究所 | Design method for aircraft APU (auxiliary Power Unit) exhaust system in laboratory |
| CN113901595B (en) * | 2021-12-10 | 2022-02-25 | 中国飞机强度研究所 | Design method for aircraft APU (auxiliary Power Unit) exhaust system in laboratory |
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