CN115200133B - Building and method for taking maximum seasonal temperature difference value in concrete body of building - Google Patents
Building and method for taking maximum seasonal temperature difference value in concrete body of building Download PDFInfo
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- CN115200133B CN115200133B CN202111439188.6A CN202111439188A CN115200133B CN 115200133 B CN115200133 B CN 115200133B CN 202111439188 A CN202111439188 A CN 202111439188A CN 115200133 B CN115200133 B CN 115200133B
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- 230000001932 seasonal effect Effects 0.000 title claims description 16
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- 238000001179 sorption measurement Methods 0.000 claims description 15
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- 238000009423 ventilation Methods 0.000 claims description 12
- 230000002195 synergetic effect Effects 0.000 claims description 11
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/04—Air-ducts or air channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/003—Ventilation in combination with air cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D2020/0004—Particular heat storage apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Ventilation (AREA)
Abstract
The invention provides a fresh air heat storage system which comprises an air supply duct, an air return duct and a heat accumulator, wherein a heat storage material, the air supply duct and the air return duct are arranged in the heat accumulator, the air supply duct and the air return duct are arranged in the heat storage material, the air return duct transmits heat to the heat storage material, and the heat storage material transmits heat to the air supply duct; the heat storage capacity of the heat storage material gradually increases along with the flowing direction of the return air duct fluid. The invention provides a novel fresh air system, which ensures that the heat storage medium absorbs heat uniformly in the fluid flow direction, and avoids the condition of uneven heat absorption.
Description
Technical Field
The invention belongs to the field of air conditioners, and particularly relates to a fresh air system and a building thereof.
Background
The heat storage materials of the prior art heat storages have the same heat storage capacity, so that the heat storages are not uniform in the whole, excessive heat storage positions, such as overhigh temperature near a high-temperature fluid inlet position, can be caused, and the service lives of the parts of the fluid pipeline and the heat storages can be reduced.
Ventilation is a key to improving indoor air quality, and outdoor fresh air is used to dilute indoor air contaminants and reduce concentration. Direct fenestration ventilation is avoided if the outdoor air is severely contaminated (e.g., a sand storm or a high concentration of respirable particles or other contaminants). The current residence has a large average area, the design generally prescribes ventilation times of 0.3 times/hour as a winter fresh air ventilation standard, the continuous supplement of indoor fresh air can definitely bring about the increase of energy consumption of an air conditioning system, the current residence total energy consumption is calculated by related departments to be 37 percent of national energy consumption, the energy consumption for air conditioning and heating accounts for 35 to 50 percent of the energy consumption of a building, and the energy consumption of the air conditioning is continuously increased along with the frequent occurrence and the continuous increase of extreme climates in winter and summer.
According to the novel efficient energy-saving fresh air system, the novel fresh air machine is internally provided with the multi-layer filtering device, formaldehyde, VOC and PM2.5 polluted gas can be effectively filtered to be more than 99.9%, the total heat exchanger, the energy storage module and the like are recycled, after temperature adjustment by means of the phase-change material, sensible heat load born by the heat exchanger of the fresh air system is obviously reduced, the phase-change material is used as a heat functional material capable of absorbing or releasing latent heat, when the environmental temperature is higher than the phase-change temperature, the phase-change material absorbs heat in a phase-change mode, when the environmental temperature is reduced to be lower than the phase-change temperature, the phase-change material releases heat in a phase-change mode, and therefore the effects of temperature regulation and energy storage are achieved, and the phase-change material is easy to recover in time after phase change. After the phase-change temperature-regulating subsystem of the fresh air system is established, the research result shows that compared with the common fresh air system, the novel fresh air system disclosed by the invention has obvious advantages in the aspects of energy saving effect and comfort level, and has important significance for sustainable development of energy.
Disclosure of Invention
The invention provides a new fresh air system, thereby solving the technical problems.
In order to achieve the above object, the technical scheme of the present invention is as follows:
the fresh air heat storage system comprises an air supply duct, an air return duct and a heat accumulator, wherein a heat storage material, the air supply duct and the air return duct are arranged in the heat accumulator, the air supply duct and the air return duct are arranged in the heat storage material, the air return duct transmits heat to the heat storage material, and the heat storage material transmits heat to the air supply duct; the heat storage capacity of the heat storage material gradually increases along with the flowing direction of the fluid along with the flowing direction of the return air duct fluid.
Preferably, the air purifying device is arranged on the air supply duct.
Preferably, the heat storage capacity of the heat storage material increases in magnitude more and more with the flow direction of the fluid.
Preferably, the air purifying device comprises an outer shell, an inner shell, an atomization charging module, a fiber water distribution dust collecting unit, a negative ion synergistic module, a cleaning module, an adsorption metal filter screen, a water circulating system and a negative pressure ventilation system; the lower part of the outer shell is provided with a uniform air inlet, a primary filter screen is attached to the lower part of the outer shell, the upper part of the outer shell is provided with an air outlet, and the inner shell is sequentially provided with a load-bearing atomization charging module, a fiber water distribution dust collecting unit, a cleaning module, an anion synergistic module and an adsorption metal filter screen from bottom to top; the water circulation system supplies circulating water required by the atomization charging module and the cleaning module, and the negative pressure ventilation system is used for circulating indoor air from the air inlet to the air outlet of the shell.
A building comprises a fresh air system.
Preferably, the building comprises a concrete body and a method for taking the maximum seasonal temperature difference value in the steel concrete body, and the method is characterized by comprising the following steps of:
first, determining the ambient temperature T when the floor structure to be tested is completed 1 ；
Step two, determining the lowest environmental temperature T before sealing doors and windows of the floor structure to be tested 2 ；
Third, calculating the maximum environmental temperature difference delta T 0 ；
ΔT 0 ＝T 2 -T 1
Fourth, calculating the maximum seasonal temperature difference delta T in the concrete body max ；
ΔT max ＝aΔT 0 -b。
Preferably, a and b are correction coefficients, and the determination method is that before concrete pouring, temperature sensors are respectively embedded in the interior and the exterior of the concrete, after the concrete pouring is completed, the respective temperature difference changes in a certain period of time are monitored, and the values of a and b are obtained after the monitoring results are subjected to linear regression.
Preferably, the certain period of time is at least three months.
Preferably, the temperature difference refers to the temperature difference of each day compared to the initial first day.
Compared with the prior art, the invention has the following advantages:
1) The invention provides a novel fresh air system, which ensures that the heat storage medium absorbs heat uniformly in the fluid flow direction, and avoids the condition of uneven heat absorption.
2) The invention provides a novel air purifier, which can effectively precipitate particles and kill various gaseous pollutants, and is beneficial to improving the immunity of human bodies and protecting the health of the human bodies.
3) The step purification device provided by the invention can synchronously perform atomization dust removal and negative oxygen ion sterilization, so that the air purification efficiency is improved and the energy consumption is reduced. Specifically, the atomization charging module and the negative oxygen ion synergistic module realize functional integration, so that on one hand, the particles are graded to load like negative charges, the charge quantity of the particles in the air is enhanced by twice charging, the charged particles are easier to intercept by an adsorption type metal filter screen, on the other hand, the use times of circulating water are reduced through more efficient water mist charge dust removal, and meanwhile, negative oxygen ions with sterilization and disinfection effects are carried in fresh air. The invention realizes multi-level air purification by various modes such as primary filter screen filtration, charged atomization trapping, fiber filter cloth adsorption, negative oxygen ion synergistic effect, high-efficiency metal mesh interception and the like, and can effectively improve the purification quality of circulating air. The invention ensures that the purification effect is optimal through reasonable collocation of the sequences of the stages.
4) The invention sequentially removes various pollutants through multistage multi-stage purification of the step purification device, not only can well remove large particles in the air, but also can effectively remove fine particles, and solves the defect of unsatisfactory purification effect of the original purification device. According to the invention, through reasonable collocation of the sequences of the stages, the influence of particles on the purification effect is avoided, and the purification effect is optimal.
5) The step purification device realizes the automatic control of the power of the fan and the charged atomization module by detecting the particle concentration, realizes the intellectualization of the system, saves energy, and obtains the optimal relation among the air flow rate, the air particle concentration of the air inlet and the atomized charged parameter through numerical calculation and experimental study.
6) The system and the method for controlling the construction safety quality of the complex modeling steel structure realize effective management of the construction process of the complex modeling steel structure, and the feasibility of the proposed method and program is verified by the overall operation result of the platform, so that the platform can be widely applied to the construction process of the large-span space steel structure.
7) The invention provides a more accurate method for taking the value of the seasonal temperature difference in the concrete body, which can accurately calculate the shrinkage stress of the concrete structure according to the obtained seasonal temperature difference in the concrete body, thereby more reasonably determining the intermittent time and the partition length of separate pouring of the concrete, effectively controlling the shrinkage cracking of the concrete, improving the engineering quality, accelerating the construction speed, saving the resources and having higher economic and social benefits.
Drawings
FIG. 1 is a schematic diagram of a fresh air system of the present invention;
fig. 2 is a schematic view of the structure of the air cleaning apparatus of the present invention.
In the figure: 1-an outer shell; 11-a primary filter screen; 12-a base; 2-an inner housing; 3-an atomization charging module; 31-an atomizing nozzle; 32-a sense electrode ring; 33-row-shaped connecting rods; 4-a fiber water distribution dust collection unit; 41-fiber filter cloth; 42-hanging frame; 5-an anion synergy module; 51-corona tip; 52-a metal bracket; 6-a water circulation system; 61-a water collection tank; 611-a drain pipe; 62-a water quality filter screen; 63-a water supply pump; 64-circulating water pipeline; 65-switching a valve; 7-a negative pressure ventilation system; 71-a negative pressure fan; 72-air chamber; 8-an adsorptive metal filter screen; 9-a cleaning module; 91-an air supply duct; 92-return air duct; 93-heat accumulator.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the drawings.
Herein, "/" refers to division, "×", "x" refers to multiplication, unless otherwise specified.
Fig. 1 discloses a fresh air system, which comprises an air supply duct 91, an air return duct 92 and a heat accumulator 93, wherein a heat accumulating material, an air supply duct and an air return duct are arranged in the heat accumulating material, the air supply duct and the air return duct are arranged in the heat accumulating material, the air return duct transmits heat to the heat accumulating material, and the heat accumulating material transmits heat to the air supply duct; the heat storage capacity of the heat storage material gradually increases along with the flowing direction of the fluid along with the flowing direction of the return air duct fluid.
If the fluid is a high-temperature fluid, the temperature of the fluid gradually decreases along with the flow of the fluid, so that the heat-discharging capability of the fluid gradually decreases, and the heat-accumulating capability of the heat-accumulating medium gradually increases, so that the heat-accumulating medium is uniform in heat accumulation in the whole in the flow direction of the fluid, the condition of non-uniform heat accumulation is avoided, and the part with excessive heat accumulation, which is caused by the non-uniform heat accumulation in the heat-accumulating heat exchanger, is influenced to be easily damaged. Similarly, if the fluid is a low-temperature fluid, the temperature of the fluid gradually increases along with the flow of the fluid, and thus the heat absorption capacity of the fluid gradually decreases, and the heat absorption capacity of the heat storage medium gradually increases, so that the heat storage medium absorbs heat uniformly in the flow direction of the fluid as a whole, and the occurrence of uneven heat absorption is avoided.
Preferably, the air purifying device is arranged on the inlet of the air supply duct.
Preferably, the heat storage capacity of the heat storage material increases in magnitude more and more with the flow direction of the fluid.
Because along the flow of fluid, high temperature fluid temperature can be lower and lower, through so setting, avoid the fluid temperature to drop too fast to influence the homogeneity of heat accumulation. Experiments prove that the heat storage of the heat accumulator is more uniform by the arrangement mode.
Preferably, the inlet of the air supply duct 91 further includes an air purifying device.
Preferably, the step purification device is constructed as shown in fig. 2. Figure 2 shows a step air purification device with charged water mist coupled with anion generation. As shown in fig. 2, the air purifying device comprises an outer shell 1, an inner shell 2, an atomization charging module 3, a fiber water distribution dust collection unit 4, a negative ion synergistic module 5, a cleaning module 9, an adsorption metal filter screen 8, a water circulation system 6 and a negative pressure ventilation system 7; the lower part of the outer shell 1 is provided with a uniform air inlet, a primary filter screen 11 is attached to the lower part, the upper part is provided with an air outlet, and the inner shell is sequentially provided with a bearing atomization charging module 3, a fiber water distribution dust collection unit 4, a cleaning module 9, a negative ion synergy module 5 and an adsorption metal filter screen 8 from bottom to top; the water circulation system supplies circulating water required by the atomization charging module 3 and the cleaning module 9, and the negative pressure ventilation system 7 is used for circulating air from the air inlet to the air outlet of the shell.
Preferably, the inner housing includes a first horizontal section extending horizontally from the outer housing at the upper side of the air inlet, a second horizontal section extending upward from one end of the first horizontal section away from the outer housing, and a vertical section extending horizontally from one end of the vertical section away from the first horizontal section.
Preferably, the first horizontal segment is disposed on the upper portion of the atomizing charging module 3 and located in the middle of the housing 1, so that effects of sound insulation, electromagnetic shielding and the like can be achieved.
Preferably, the extension line of the first horizontal section intersects with the fiber water distribution dust collecting unit 4, wherein the intersection point is located at the middle lower part of the fiber water distribution dust collecting unit 4.
Preferably, the second horizontal section is provided with an air outlet pipe, and the air outlet channel is connected with an air outlet of the shell.
In order to improve the air purification efficiency, the invention adopts the modes of sectional treatment, step purification and active cleaning to sequentially remove large particles, a plurality of fine particles, formaldehyde, microorganism pollutants and residual fine particles in the air, and release negative oxygen ions and moisture which are beneficial to human bodies to the environment. According to the purifying principle, a primary filter screen, an atomization charging module, a fiber water distribution dust collecting unit, a negative oxygen ion synergistic module and an adsorption metal filter screen are sequentially arranged, and meanwhile a cleaning module is used for cleaning accumulated dust regularly.
Through dividing into a plurality of different sections, each section has the targeted removal of different pollutants, not only can fine realization in the air big particulate matter's desorption, can effectively get rid of fine particulate matter, solves the not ideal drawback of former purifier purifying effect.
According to the invention, through reasonable collocation of the sequences of the stages, the influence of particles on the purification effect is avoided, and the purification effect is optimal. In contrast, it was found through extensive experimentation that the effect of contaminant removal is markedly poor if the sequence of several stages is not arranged according to the present application. The sequential collocation of the several stages of the present invention is therefore an inventive aspect of the present invention.
According to the invention, the inner shell is arranged, and most parts are arranged in the inner shell, so that on one hand, the effects of sound insulation and electromagnetic shielding can be realized, and meanwhile, the pipeline arrangement is convenient.
Preferably, as shown in fig. 2, the negative pressure ventilation system 7 comprises a negative pressure fan 71, an air chamber 72, wherein the negative pressure fan 71 is arranged on the air outlet pipe at the upper part, the negative pressure fan 71 is arranged on the upper part of the adsorptive metal filter screen 8, and the connection mode can be elastic connection or flange connection, and the air chamber is positioned in an air circulation place between the shells. Preferably, the air chamber is connected with the air inlet, and the air from the air chamber passes through the atomization charging module 3. In this embodiment, after the negative pressure fan is started, a negative pressure environment is formed in the air chamber 72, and air is sucked into the air chamber 72 through the uniform air inlet on the housing 1 and is filtered for the first time through the primary filter screen 11, and the filtered air formed at this time is referred to herein as primary purified air.
The primary purified air flows upwards in the air chamber 72 and sequentially passes through the atomization charging module 3, the fiber water distribution dust collection unit 4, the negative ion synergistic module 5 and the adsorption metal filter screen 8.
The atomizing charging module 3 is located at the lower part of the inner shell 2 and comprises an atomizing nozzle 31, an induction electrode ring 32 and a row-shaped connecting rod 33. In the atomization charging module 3, each sensing electrode ring 32 is fixed by a row-shaped connecting rod 33, and the atomization nozzles 31 are positioned vertically below the sensing electrode rings 32, and the number and the positions are strictly in one-to-one correspondence. The sense electrode ring 32 is connected to a positive high voltage power supply, preferably with an output voltage typically between 3-12 kv. After the power is turned on, a positive even layer builds up on the surface of the electrode ring 32 causing negative charge to be induced across the droplet. The atomizing nozzle 31 is connected with a circulating water pipeline 64 of the water circulating system 6, atomizes and sprays circulating water, senses and carries negative charges with opposite polarities after passing through the sensing electrode ring 32, and forms finer water mist. When the primary purified air passes through the fine water mist zone, the carried particles are agglomerated and coalesced under the multiple actions of electrostatic force, collision force and liquid bridge force, and are settled into the fiber water distribution dust collection unit 4 and the water collection tank 61 along with the liquid drops. The water collecting tank 61 contains water quality precipitant and is provided with a water outlet 611, so that the cleaning and replacement of circulating water can be realized, the circulating water is filtered by the water collecting tank through the water quality filter screen 62, and then is conveyed to the circulating water pipeline 64 by a water pump, and enters an atomizing nozzle for the next circulation. The process strengthens the efficiency of single water mist dust removal, reduces the consumption of circulating water, can effectively remove particles with smaller kinetic diameter, and obtains primary charge by a small amount of escaped particles in the purified wind.
Preferably, as shown in fig. 2, the fiber water distribution dust collection unit 4 is located above the atomizing nozzle 31, and comprises a fiber filter cloth 41 and a suspension bracket 42, wherein the fiber filter cloth 41 is naturally and vertically inserted in a gap of the induction electrode ring 32, a top end connecting layer of the fiber filter cloth is sleeved and fixed on the suspension bracket 42, and the suspension bracket 42 is mounted on the inner shell 2. The fiber filter cloth 41 can adhere to and intercept particulate matters in the filtered air, enhances the adsorption capacity of the atomized liquid drops on the particulate matters after wetting, can effectively prevent the atomized pollutants from escaping secondarily, and has the characteristics of removing formaldehyde, adsorbing the particulate matters and the like due to the pollutant catalytic cleaning agent attached to the inside of the fiber filter cloth. The cleaning module 9 above the water circulation system 6 sprays cleaning water from the top nozzle at regular time, and cleaning liquid drops wash the wall surface of the channel, so that deposited particles and the like fall into the water collecting tank 61 along with the liquid drops, single cleaning of the fiber water distribution dust collecting unit 4 is completed, and the cleaning interval can be manually selected and adjusted according to the concentration of air pollutants. The air that has completed the above sterilization, dust removal, adsorption filtration treatment in this example is referred to as secondary purified air.
Preferably, as shown in fig. 2, the negative ion enhancement module 5 is located above the atomizing nozzle 31, and includes a corona tip 51 and a metal holder 52. The metal bracket 52 is provided with a plurality of corona tips 51 in a distributed and welded mode, and is connected with a negative high-voltage power supply, preferably, the output voltage is controlled between-5 kv and-30 kv, and the output voltage can be adjusted according to the concentration of pollutants. The corona tip 51 releases negative electrons to the air chamber 72, so that the secondary purified air is ionized to generate negative oxygen ions, the tiny particles remained in the air are loaded with the like negative charges again, the secondary charge is realized, other pollutants in the filtered air such as bacteria, viruses and harmful gases are killed, and the residual negative oxygen ions are purified and enter the heat collector to become fresh air with an active purification effect. The secondary charge integration of the negative oxygen ions and the particulate matters is generated, so that the use energy consumption and the equipment space are reduced.
The adsorption metal filter screen 8 is located above the negative ion synergistic module 5 and below the negative pressure fan 71, the secondary purified air is subjected to final stage filtration at the position, a small amount of the reinforced charged dust particles remained in the secondary purified air are adsorbed and filtered by the adsorption metal filter screen 8, and then the purified fresh air carrying negative oxygen ions enters the heat collector under the traction of the negative pressure fan 71, which is also called as three-stage purified air.
The cascade air purification device with the charged water mist coupled with the negative ion synergism can synchronously carry out atomization dust removal and negative oxygen ion sterilization, so that the air purification efficiency is improved and the energy consumption is reduced. Specifically, the atomization charging module and the negative oxygen ion synergistic module realize functional integration, so that on one hand, the particles are graded to load like negative charges, the charge quantity of the particles in the air is enhanced by twice charging, the charged particles are easier to intercept by an adsorption type metal filter screen, on the other hand, the dust is removed by more efficient charged water mist, the using times of circulating water are reduced, and meanwhile, negative oxygen ions with sterilizing and disinfecting effects are carried in fresh air and enter the heat collector. The invention realizes multi-level air purification by a plurality of filtering interception modes such as primary filter screen filtration, charged atomization trapping, fiber filter cloth adsorption, negative oxygen ion synergism, high-efficiency metal mesh interception and the like, and can effectively improve the purification quality of circulating air.
Preferably, the air inlet is provided with a particle detector for detecting the concentration of particles in the air inlet, the particle detector is in data connection with a controller, and the controller controls the power of the atomization charging module 3 according to the detected data.
When the detected particle concentration increases, the controller controls the power of the atomizing charging module 3 to increase, thereby improving the strength of removing particles. When the concentration of the detected particles is reduced, the controller controls the power of the atomization charging module 3 to be reduced, so that the strength of removing the particles is reduced, and energy is saved.
According to the invention, the power change of the atomization charging module 3 is automatically controlled according to the concentration of the particulate matters, so that the intellectualization of the system is further improved, and the energy is saved.
Preferably, the air inlet is provided with a particle detector for detecting the concentration of particles in the air inlet, the particle detector is in data connection with a controller, and the controller controls the power of the air outlet fan according to the detected data.
When the detected particle concentration increases, the controller controls the power of the air outlet fan to be reduced, so that the amount of the air entering the air outlet fan is reduced, and the phenomenon that the air quality of the air outlet is not up to standard due to insufficient particle removal force is avoided. When the particle concentration that detects reduces, the power of controller control air intake fan or air outlet fan increases to increase the amount of wind, guarantee the efficiency of air inlet, can realize simultaneously that particle concentration reaches the demand.
According to the invention, the power change of the air outlet fan is automatically controlled according to the concentration of the particulate matters, so that the quality and the efficiency of the air outlet can meet the requirements, the intellectualization of the system can be further improved, and the energy can be saved.
Preferably, in the above automatic control, an air outlet may be provided with a particle detector instead of the particle detector of the air inlet, and the intelligent control of the power of the atomized charging module 3 and the power of the air outlet fan may be achieved by detecting the particle concentration of the air outlet. The control mode is the same as that of the particle detector arranged at the air inlet.
In practical research, it is found that the air flow rate of the air inlet, the concentration of air particles in the air inlet and the power of the atomization charging module 3 have an optimal relation, and if the ratio between the flow rate and the power of the atomization charging module 3 is too large, the output air quality is necessarily poor, and the purifying effect cannot be achieved. The ratio between the concentration of air particles and the power of the atomizing charging module 3 is too large, so that the output air quality is necessarily poor, the purifying effect cannot be achieved, and otherwise, the excessive waste of the dynamic rate is caused. According to the invention, through numerical calculation and experimental study, the optimal relation among the air flow rate, the air particle concentration of the air inlet and the atomization charging module 3 is obtained.
The controller stores reference data: velocity of air V Air-conditioner Concentration N of air particles at air inlet Air-conditioner And the power W of the atomization charging module 3, the operation is performed under the reference data, and the concentration of air particles output by the atomization charging module 3 meets the requirement.
If the air flow rate becomes v Air-conditioner Concentration n of air particles at air inlet Air-conditioner The power w of the atomizing charging module 3 satisfies the following operation modes:
w/W＝a*((v air-conditioner /V Air-conditioner )*(n Air-conditioner /N Air-conditioner )) b Wherein a and b are parameters, and the following formula is satisfied:
(v air-conditioner /V Air-conditioner )*(n Air-conditioner /N Air-conditioner )<1,0.97<a<1.0；1.0<b<1.06；
(v Air-conditioner /V Air-conditioner )*(n Air-conditioner /N Air-conditioner )＝1,a＝1，b＝1；
(v Air-conditioner /V Air-conditioner )*(n Air-conditioner /N Air-conditioner ),1.0<a<1.03,1.0<b<1.05；
Wherein the following conditions need to be satisfied in the above-described mode formula: 0.88<(v Air-conditioner /V Air-conditioner )*(n Air-conditioner /N Air-conditioner )<1.12；
The reference data is stored in the controller.
Preferably, the controller stores a plurality of sets of reference data.
Preferably, when the plurality of sets of reference data are satisfied ((1-V/V) is selected 2 +(1－n/N) 2 ) A set v and n with the smallest values.
Through the control formula, the atomization charging module 3 and the wind speed can regulate and control the power according to actual changes, so that energy loss caused by overlarge or overlarge power or air quality of output caused by the overlarge or the overlarge power is avoided, and the intelligent degree of the system is further improved.
Preferably, the atomizing charging module 3 adjusts the power W by adjusting the high voltage power source to which the sensing electrode ring 32 is connected.
Preferably, the concentration of air particles at the air inlet is detected by the concentration of air particles after the primary filter screen 11 filters.
Preferably, the air flow rate is achieved by adjusting the power of the air outlet fan.
As a preference, several filter elements may be optionally provided depending on the actual situation, for example the air pollution level. Preferably, a step purification device is provided in the filter module. Other primary filters, electrostatic precipitators and activated carbon filters can be selectively arranged or not.
Preferably, the invention discloses a building comprising the fresh air system of figure 1.
Preferably, the body of the building comprises a concrete body.
Buildings exposed to the natural environment are affected by changes in conditions from the surrounding natural environment from construction of the structure to normal use. Among the many external environmental factors, adverse effects of temperature effects on the ultra-long structure are particularly pronounced.
For most inland climatic regions in China, the four seasons temperature change is obvious, the temperature difference between winter and summer is large, the ultra-long building structure generally has the characteristics of huge engineering, long construction period and the like from the aspect of building structure, the accurate calculation of the shrinkage stress of the concrete structure is the premise of determining the intermittence time and the partition length of the ultra-long structure, and the seasonal temperature difference formed by the difference between the construction period temperature and the use period temperature of the structure closing stage becomes a main factor influencing the shrinkage stress of the structure.
However, at present, the shrinkage stress of the concrete structure is calculated directly according to the temperature difference between the external environment and the season, and the difference between the maximum temperature difference in the concrete body and the temperature difference between the external environment and the season is not considered, so that the shrinkage stress of the calculated concrete structure is inaccurate, the partition length of the ultra-long concrete structure in the design and construction is smaller, the intermittent time is longer, and the waste of resources and the lengthening of the construction period are caused.
In the building structure, the shrinkage stress of the concrete of each floor is different, and the maximum seasonal temperature difference in the concrete of each floor is accurately obtained by accurately calculating the shrinkage stress of the concrete of each floor.
The specific operation steps of the method for evaluating the maximum seasonal temperature difference in the concrete body of the invention are described below by taking a certain practical engineering as an example. The thickness of the engineering structure middle plate is 0.2 m, and the thickness of the beam is 0.4 m.
The invention relates to a method for taking the maximum seasonal temperature difference value in a building concrete body, which comprises the following steps:
first, determining the ambient temperature T when the floor structure to be tested is completed 1 ；
Specific values in this example are shown in the following table:
step two, determining the lowest environmental temperature T before sealing doors and windows of the floor structure to be tested 2 ；
Specific values in this example are shown in the following table:
third, calculating the maximum environmental temperature difference delta T 0 ；
ΔT 0 ＝T 2 -T 1
Taking one layer as an example, the maximum environmental temperature difference is DeltaT 0 =23- (-0.5) =23.5 degrees
Fourth, calculating the maximum seasonal temperature difference delta T in the concrete body max
ΔT max ＝aΔT 0 -b
a. And b is a correction coefficient, wherein the determination method is that before concrete pouring, temperature sensors are respectively embedded in the interior and the exterior of the concrete in advance, the temperature difference change between the interior and the exterior of the concrete in a certain time period after concrete pouring is monitored, and the values of a and b are obtained after the monitoring result is subjected to linear regression.
In this embodiment, a temperature sensor embedded in one layer is taken as an example. The temperature in the temperature sensor is monitored and recorded 10 hours after the concrete is poured, the concrete pouring time is 2015, 10 months, 28 days to 10 months and 29 days, and the internal temperature of the concrete needs to be reduced to the ambient temperature as an exothermic process exists after the concrete is poured. Therefore, the temperature before 11 months 7 in this example is not considered.
Linear regression was performed on the plate temperature differences and the ambient temperature differences in the above table to obtain a=0.685, b=2.1; linear regression of the beam temperature difference and the ambient temperature difference resulted in a=0.643, b=2.1; thus, in the present embodiment, the maximum seasonal temperature difference of the 0.4 m beam of one layer is DeltaT max ＝aΔT 0 -b=0.685 x 23.5-2.1= 13.9975, the maximum seasonal temperature difference of a layer of a floor slab of 0.2 meter thickness being Δt max ＝aΔT 0 -b＝0.643*23.5-2.1＝13.0105。
While the invention has been described in terms of preferred embodiments, the invention is not so limited. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (5)
1. The building comprises a fresh air heat storage system, wherein the fresh air heat storage system comprises an air supply duct, an air return duct and a heat accumulator, a heat storage material is arranged in the heat accumulator, the air supply duct and the air return duct are arranged in the heat storage material, the air return duct transmits heat to the heat storage material, and then the heat of the heat storage material is transmitted to the air supply duct; the heat storage capacity of the heat storage material gradually increases along the flow direction of the return air duct fluid; the fresh air heat storage system also comprises an air purification device, and the air purification device is arranged on the air supply duct; the air purification device comprises an outer shell, an inner shell, an atomization charging module, a fiber water distribution dust collection unit, a negative ion synergistic module, a cleaning module, an adsorptive metal filter screen, a water circulation system and a negative pressure ventilation system; the lower part of the outer shell is provided with a uniform air inlet, a primary filter screen is attached to the lower part of the outer shell, the upper part of the outer shell is provided with an air outlet, and the inner shell is sequentially provided with a load-bearing atomization charging module, a fiber water distribution dust collecting unit, a cleaning module, an anion synergistic module and an adsorption metal filter screen from bottom to top; the water circulation system supplies circulating water required by the atomization charging module and the cleaning module, and the negative pressure ventilation system is used for circulating indoor air from the air inlet to the air outlet of the shell.
2. The building according to claim 1, wherein the heat storage capacity of the heat storage material increases in magnitude with the flow direction of the fluid.
3. A method of maximum seasonal temperature differential value within the concrete body of a building according to claim 1, said building comprising a concrete body, the method of maximum seasonal temperature differential value within the concrete body comprising the steps of:
first, determining the ambient temperature T when the floor structure to be tested is completed 1 ；
Step two, determining the lowest environmental temperature T before sealing doors and windows of the floor structure to be tested 2 ；
Third, calculating the maximum environmental temperature difference delta T 0 ；
ΔT 0 ＝T 2 -T 1 ；
Fourth, calculating the maximum seasonal temperature difference delta T in the concrete body max ；
ΔT max ＝aΔT 0 -b；
a. b is a correction coefficient, the determination method is that before concrete pouring, temperature sensors are respectively buried in the interior and the exterior of the concrete, after the concrete pouring is completed, the respective temperature difference changes within a certain period of time are monitored, and the values of a and b are obtained after the monitoring results are subjected to linear regression.
4. A method according to claim 3, wherein the certain period of time is at least three months.
5. A method according to claim 3, wherein the temperature difference is the temperature difference of each day compared to the initial first day.
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| JPH1119536A (en) * | 1997-06-30 | 1999-01-26 | Aiwa Co Ltd | Liquid atomizing device, air cleaner, minus ion generator and humidifier |
| JPH1123020A (en) * | 1997-06-30 | 1999-01-26 | Aiwa Co Ltd | Cooler, air cleaning device, negative ion generating device and humidifier |
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| CN204853894U (en) * | 2015-05-25 | 2015-12-09 | 青岛科瑞新型环保材料有限公司 | Stored energy material's air supply system is set up at air supply channel |
| CN109632864A (en) * | 2018-12-12 | 2019-04-16 | 青建集团股份公司 | Maximum Seasonal Temperature Difference obtaining value method in concrete bodies |
| CN111536818A (en) * | 2019-12-23 | 2020-08-14 | 青岛建设集团有限公司 | Heat storage heat exchanger and fresh air system for controlling PM25 |
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2021
- 2021-11-30 CN CN202111439188.6A patent/CN115200133B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1119536A (en) * | 1997-06-30 | 1999-01-26 | Aiwa Co Ltd | Liquid atomizing device, air cleaner, minus ion generator and humidifier |
| JPH1123020A (en) * | 1997-06-30 | 1999-01-26 | Aiwa Co Ltd | Cooler, air cleaning device, negative ion generating device and humidifier |
| CN104833254A (en) * | 2015-05-25 | 2015-08-12 | 青岛科瑞新型环保材料有限公司 | Heat accumulation heat exchanger and primary air system with filtering device |
| CN204853894U (en) * | 2015-05-25 | 2015-12-09 | 青岛科瑞新型环保材料有限公司 | Stored energy material's air supply system is set up at air supply channel |
| CN109632864A (en) * | 2018-12-12 | 2019-04-16 | 青建集团股份公司 | Maximum Seasonal Temperature Difference obtaining value method in concrete bodies |
| CN111536818A (en) * | 2019-12-23 | 2020-08-14 | 青岛建设集团有限公司 | Heat storage heat exchanger and fresh air system for controlling PM25 |
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