44 results about "Greenhouse effect" patented technology

The invention belongs to the technical field of non-phase-change refrigeration, and particularly relates to a non-phase-change active refrigeration method and device based on salt solution precipitation and dissolution under pressure regulation and control and application. The saline solution is used for refrigeration, greenhouse gas is not generated, dependence on fluid media in the heat transfer process is avoided, and environmental protection and high efficiency are achieved. The device comprises a pressure driving device, a solution circulating system and a heat exchange system, hydrostatic pressure serves as power for driving salt to be separated out in a solution of the hydrostatic pressure, the dissolved salt is effectively and controllably recrystallized, and active controllability of refrigeration circulation is achieved. After the solution is pressurized to separate out crystals, heat released by the residual dilute solution is transferred to a hot end; after the pressure is released, the crystals are dissolved to absorb heat of the cold end, and refrigeration circulation is completed. The solution is a refrigeration material and a heat transfer medium, is similar to traditional gas compression refrigeration, does not destroy the ozone layer and has no greenhouse effect, efficient refrigeration is achieved, and meanwhile environment friendliness and sustainable development are facilitated.

The ecological device comprises an adsorption system and a desorption system, and the adsorption system is of an upper, middle and lower structure and comprises an adsorption bin, a floating body and a microporous aeration pipe; the adsorption bin is of a frame structure, an adsorption module is placed in the adsorption bin, the adsorption module is a square body formed by stacking a plurality of strip-shaped adsorption net cages in a staggered mode, gaps are reserved between the adjacent strip-shaped adsorption net cages, and adsorbents are arranged in the adsorption net cages; wind-proof plates are arranged on four surfaces of the periphery of the adsorption bin; the top of the adsorption bin is closed, the other five faces are open, and a hygrophilous plant planting pool is arranged at the top of the adsorption bin. The device is used for open water areas such as water surfaces of rivers and lakes, carbon dioxide above the water surfaces is captured by adopting an adsorption principle, the concentration of carbon dioxide gas on the water is reduced, the atmospheric greenhouse effect is slowed down, the acidity of the water is reduced, the chemical environment of the water is stabilized, and the synergistic effect of protecting the rivers and the lakes and reducing carbon and emission is formed.

A resource-recycling greenhouse horticulture simulation apparatus which promotes recycling use of exhaust heat and an exhaust gas to allow a contribution to a reduction in greenhouse effect gas. The apparatus includes: an exhaust heat-recycling simulation unit in a case of recovering exhaust heat to use it for heating; and an exhaust gas-recycling simulation unit in a case of using carbon dioxide obtained by recovering an exhaust gas for growth promotion of the plant. A greenhouse effect gas reduction amount by using the exhaust heat can be simulated by an exhaust heat-use greenhouse-effect-gas reduction-amount calculation unit, and a greenhouse effect gas emission amount by using the exhaust gas can be simulated by an exhaust gas-use greenhouse-effect-gas reduction-amount calculation unit.

The invention discloses a compact environment-friendly gas-insulated totally-enclosed ring main unit, and relates to the technical field of ring main units, in particular to a compact environment-friendly gas-insulated totally-enclosed ring main unit, which comprises a cabinet body, fins, a cleaning mechanism and an engineering dry air mechanism, fins achieve heat dissipation of the cabinet body, the cleaning mechanism cleans dust on the fins through a rolling brush, a spray head at the bottom of a first pipeline can wet the rolling brush when a temperature sensor detects that the temperature exceeds 50 DEG C, and a support is matched with the spray head to move up and down to achieve the dual functions of cleaning and cooling. The engineering dry air mechanism preheats air through a heating pipe and a heating wire of a second pipeline, then the air is dehydrated and air-dried through a small thermal cycle air bellow, generated dry air is introduced into an air box for insulation arc extinguishing, and meanwhile the temperature of the air box is controlled to guarantee the insulation performance. The ring main unit is compact in structure, dry air is non-toxic and non-combustible, greenhouse effect is avoided, and the ring main unit is environment-friendly, reliable in operation and suitable for various power distribution scenes.

A fuel consumption amount including a heat transfer index of each of the inner liner coating materials in a calculation element is calculated, and the energy saving performance of an agricultural greenhouse is simulated. As a result, it is possible to predict the amount of fuel consumption by using these thermal movement indexes in either a case where the liner coating material is composed of a single layer of one curtain member or a case where the liner coating material is composed of a multi-layer curtain composed of a plurality of curtain members. According to the present invention, the amount of reduction in fuel consumption and the amount of reduction in greenhouse effect gas in a selected curtain member or a multi-layer curtain can be grasped, energy-saving performance can be visualized, and an inner liner coating material having more excellent energy-saving performance can be selected.

The present application relates to the technical field of ecological environment monitoring, in particular to a kind of ecological environment monitoring method and system along the expressway road area, the present application is according to vehicle speed, vehicle type and environmental parameter, the similarity of environment at different time is analyzed, and the driving similarity of different vehicles of the same vehicle type is obtained Predicted speed sequence and predicted traffic flow sequence of each vehicle in each monitoring area in prediction period;Further, in combination with neural network model, the predicted greenhouse effect gas content sequence in each monitoring area in prediction period is obtained;Then, by analyzing the consistency of the predicted greenhouse effect gas content in each monitoring area, the importance of each monitoring area is obtained, and the density of unmanned aerial vehicle in each monitoring area is adjusted. Through the present application, the density of unmanned aerial vehicle in each monitoring area of expressway can be timely regulated, thereby effectively improving the monitoring accuracy of ecological environment in each monitoring area of the whole line, while avoiding the monitoring error caused by sudden environmental change.

This invention relates to the field of waste incineration technology, specifically to a waste incineration treatment equipment with a dust suppression device. The equipment includes an incinerator and a dust collection box fixedly installed on one side of the top of the incinerator. A gas supply pipe is fixedly installed on one side of the dust collection box, and a purification box is fixedly installed on one side of the gas supply pipe. A dust suppression component is located at the top of the dust collection box. Air inlet pipes are fixedly installed on both sides of the top of the incinerator near the dust collection box, extending into the interior of the dust collection box. The dust suppression component can clean large particles such as dust from the smoke generated by incinerating waste and also cool the air produced by incineration. The gas after dust suppression enters the purification box through the gas supply pipe to purify toxic gases in the air, preventing toxic gases and dust particles mixed in with the smoke from causing air pollution and preventing the exacerbation of the greenhouse effect.

The invention discloses a greenhouse effect test device, and relates to the field of greenhouse effect tests, the greenhouse effect test device comprises a test box and a circulating air pump, two corresponding surfaces of the test box are respectively provided with an air inlet shell and an air outlet shell in a penetrating manner, and the air inlet end and the air outlet end of the circulating air pump are respectively connected with the air outlet shell and the air inlet shell; the annular gas pump is used for driving gas in the test box to be exhausted from the exhaust shell and circularly guided in from the gas inlet shell, a gas inlet grid plate and a gas exhaust grid plate are arranged in the gas inlet shell and the exhaust shell respectively, and a plurality of uniformly distributed gas holes are formed in the surfaces of the gas grid plate and the gas exhaust grid plate, so that the gas in the test box is conducted in a surface type convection manner; according to the invention, the gas circulating system is arranged to conduct gas in the test box, carbon dioxide or air is supplemented into the circulating system through the gas supplementing device, the carbon dioxide content in the test box is rapidly and uniformly controlled, the regulation and control speed is high, and the regulation and control uniformity is high.

The invention belongs to the field of power transmission, and particularly relates to a GIL pipe gallery sulfur hexafluoride discharging system. According to the GIL pipe gallery sulfur hexafluoride discharging system, through cooperation of the GIL pipe gallery, the sulfur hexafluoride discharging pipeline, the flow guide pipe, the sulfur hexafluoride detector, the discharging fan, the sulfur hexafluoride removing device and the like, when the sulfur hexafluoride detector detects that sulfur hexafluoride leaks, the sulfur hexafluoride removing device is started, the discharging fan is started, negative pressure is formed in the flow guide pipe, and the sulfur hexafluoride is discharged. Sulfur hexafluoride flows into the sulfur hexafluoride discharging pipeline from the flow guide pipe to be discharged, and the sulfur hexafluoride is removed when passing through the sulfur hexafluoride removing device, so that the sulfur hexafluoride is prevented from flowing into the atmosphere to cause the greenhouse effect, and the sulfur hexafluoride is prevented from depositing in the power transmission tunnel to cause potential safety hazards.

To provide an information processing method and a program capable of contributing to prevention of global warning by supporting creation of a carbon credit using an electric vehicle.SOLUTION: An information processing method processes information on a carbon credit created by reducing a greenhouse effect gas by a computer. The carbon credit is created on the basis of reduction of the greenhouse effect gas emitted by charging behavior of an electric vehicle 10, and the information processing method includes a generation step for generating candidates for charging behavior including other charging behavior having an emission amount of the greenhouse effect gas smaller than reference charging behavior and selectable by a user of the electric vehicle 10, an emission amount calculation step for calculating each of prediction values of emission amounts of the greenhouse effect gas emitted by each charging behavior, and a reduction amount calculation step for calculating a prediction value of a reduction amount of the greenhouse effect gas in each of the other charging behavior.SELECTED DRAWING: Figure 11

The invention discloses a water-cooled magnetic suspension centrifugal heat pump unit and an operation method thereof. The heat pump unit comprises a centrifugal compressor, a condenser and an evaporator which are sequentially connected. An electronic expansion valve is arranged at the joint of the condenser and the evaporator; the centrifugal compressor comprises a machine shell, a motor assembly rotationally clamped in the machine shell and a centrifugal impeller rotationally clamped on the motor assembly. The condenser comprises an outer barrel, a condensation pipe arranged in the outer barrel and a dispersion sleeve arranged in the outer barrel and located on the inner side of the condensation pipe; the heat pump unit is reasonable in structural design and stable and reliable in operation, and the centrifugal magnetic suspension compressor is adopted as a power source of the whole unit, so that in the operation process of the heat pump unit, emission of harmful gas such as CO2 and NOX is avoided, and the greenhouse effect of the earth is not affected at all; and in the operation process of the centrifugal magnetic suspension compressor, air cooling treatment can be automatically conducted, the use stability of the centrifugal compressor is effectively improved, and the centrifugal magnetic suspension compressor is suitable for application and popularization.

This invention relates to a phase-change self-regulating temperature-enhancing environmentally friendly energy-saving wall material and its production method, belonging to the field of building materials. It combines building materials and chemicals, employing a composite principle and achieving thermal insulation and energy saving through phase-change temperature regulation. In summer, the wall absorbs heat and undergoes physical transformation, lowering the room temperature by 2-3°C and reducing air conditioning power consumption by 50%. In winter, it stores heat, enhancing the greenhouse effect. Construction is convenient, and it can be widely used in new construction and renovation of old buildings, completely overcoming inherent problems such as wall cracks, condensation, peeling, and mold. Furthermore, this material is a Class A non-combustible material. It improves the functional level and comfort of residential buildings.

The present application relates to a method for reducing the global greenhouse effect, in which a gas that is inactive for long-wave radiation is introduced into the Earth's atmosphere, preferably the troposphere, whereby the total volume of the Earth's atmosphere is increased. According to the invention, in order to provide an alternative method for reducing the global greenhouse effect, it is provided that a mass of the climate-damaging gases contained in the Earth's atmosphere remains constant, so that the increase in the total volume causes a relative reduction in the content of climate-damaging gases contained in the Earth's atmosphere, based on the total volume of the Earth's atmosphere.

The application provides a preparation method of thermally activated slag, cement and calcium hydroxide mixture geopolymer concrete, which comprises the following steps: a, raw material preparation; b, raw material pretreatment; c, activity excitation; d, net paste preparation; and e, concrete configuration. The application also provides a prefabricated bay window, and the main material of the prefabricated bay window is the thermally activated slag, cement and calcium hydroxide mixture geopolymer concrete prepared by the preparation method. The preparation method of the thermally activated slag, cement and calcium hydroxide mixture geopolymer concrete uses the slag obtained in the earthwork excavation of a project as the main material of the concrete, significantly reduces the dependence on the traditional concrete raw materials, reduces the energy consumption and greenhouse gas emission in the raw material mining process, and effectively alleviates the global greenhouse effect. In addition, the construction cost is saved, the transportation and treatment cost of the construction slag is greatly reduced, and remarkable economic benefits are brought to enterprises.

The invention relates to a road construction whole process environmental load accurate quantification method and an accounting system, and the method comprises the steps: obtaining data, solid particle pollutants, road material VOCs, and greenhouse effect indexes corresponding to all equipment energy types in the whole construction process according to a field test; accounting the sum of environmental loads generated by road materials and all equipment in the whole road construction process; the environmental load generated by the road material comprises the environmental load generated by solid particle pollutants discharged in the production and mixing process of the road material and the environmental load generated by VOCs discharged in the production and mixing, transportation and construction stages of the road material; in the construction stage, according to a cooling equation of a road material, the construction temperature is divided into different temperature intervals, the environmental load generated by VOCs emission in each temperature interval is calculated, the total environmental load in the whole road construction process can be calculated more accurately and quantitatively, a scientific and accurate method can be provided for carbon emission calculation in the field of road infrastructures, and the construction efficiency is improved. And the low-carbon sustainable development of the transportation industry can be promoted.

The application discloses an alternating contact circuit breaker device and an alternating contact circuit breaking method. The device comprises an insulating sleeve, a circuit breaking rod and an operating mechanism. The circuit breaking rod comprises a first insulating section, a conductive section and a second insulating section connected in sequence. One end of the insulating sleeve is provided with an upper outgoing line seat, and a middle part of the insulating sleeve is provided with a lower outgoing line seat for separating the insulating sleeve into an upper insulating sleeve and a lower insulating sleeve. A conductor plate is arranged in the upper insulating sleeve and forms an arc extinguishing chamber filled with insulating bodies between the upper outgoing line seat and the lower outgoing line seat. When the circuit breaking rod moves to the conductive section and simultaneously contacts the upper outgoing line seat and the conductor plate, the upper outgoing line seat and the lower outgoing line seat are electrically connected. When the circuit breaking rod moves to the conductive section and only contacts the conductor plate, the upper outgoing line seat and the lower outgoing line seat are electrically disconnected. The application does not use toxic or high-temperature greenhouse gases for arc extinguishing, which is beneficial to personal safety, avoids environmental pollution, makes the application an environmentally friendly power equipment, and can also reduce maintenance costs and has great popularization value.

The present application relates to the technical field of ocean energy exploitation, and provides a marine temperature difference power generation and carbon capture coupling system, which adopts a water-based carbon capture method, utilizes the low-temperature and high-pressure environment characteristics at a preset depth in the ocean, carries out two-stage carbon capture on industrial flue gas by using the water on the ground, improves the CO2 absorption effect, can obtain high-concentration CO2 gas, and is easy to obtain, low in cost, simple in technology, and friendly to the environment. In addition, the system fully utilizes the cold energy at the preset depth in the ocean, introduces ORC, outputs power under low energy consumption, couples the marine temperature difference power generation and carbon capture processes, achieves the purpose of single system double benefits of outputting power and reducing the influence of the greenhouse effect at the same time, and makes the system more applicable. Compared with the prior art, the energy consumption and operation and maintenance cost of the system are greatly reduced.

The invention discloses a tail gas carbon capture device and method, and relates to the technical field of air carbon capture systems.The tail gas carbon capture device comprises at least two adsorption heat exchange cavities, a heat exchanger and an air storage tank, the adsorption heat exchange cavities comprise the first adsorption heat exchange cavity and the second adsorption heat exchange cavity, and each of the first adsorption heat exchange cavity and the second adsorption heat exchange cavity comprises an inner pipe and an outer pipe; an inner pipe is arranged in the outer pipe in a sleeved mode, a CO2 adsorbent is arranged in a gap between the outer pipe and the inner pipe, one end of the inner pipe of the first adsorption heat exchange cavity and one end of the inner pipe of the second adsorption heat exchange cavity are communicated with a tail gas exhaust port, the other ends of the inner pipes of the first adsorption heat exchange cavity and the second adsorption heat exchange cavity can be communicated with each other, and one end of the inner pipe of one adsorption heat exchange cavity in each group can be communicated with the outer pipe of the other adsorption heat exchange cavity in the same group through a heat exchanger. And the outer pipes of the first adsorption heat exchange cavity and the second adsorption heat exchange cavity can be communicated with an air storage tank or external atmosphere. According to the embodiment, the at least two adsorption heat exchange cavities are arranged, alternate circulation can be achieved through the two adsorption heat exchange cavities, waste heat in truck tail gas is fully utilized, energy conservation and emission reduction are achieved, and the greenhouse effect is reduced.

The application provides a water lens heater for warming and heat preservation of a mariculture pond and a use method, and relates to the technical field of seawater heating. The heater comprises a water lens unit and at least one heat preservation unit, the water lens unit and the heat preservation unit form a stacked structure distributed in an up-down mode, the water lens unit is located below the heater, and the heat preservation unit is stacked above the water lens unit; a water injection cavity for water injection is formed in the water lens unit, and an air cavity for air injection is formed in the heat preservation unit; the water lens unit and the heat preservation unit are both made of a light-transmitting film. The heater can effectively shorten the warming period of the mariculture pond through the synergistic effect of the three mechanisms of heat locking through the greenhouse effect, light concentration and efficiency increase through the lens, and multi-layer air heat insulation, can raise low-temperature seawater to a suitable temperature for breeding in several hours or 1-2 days, and greatly improves fattening efficiency and production rhythm.

The utility model provides a cold energy utilization and carbon capture system for a large-scale LNG (Liquefied Natural Gas) factory in an extremely cold region, which comprises a natural gas liquefaction unit, a carbon capture unit and a carbon capture unit, the gas turbine power generation unit is connected with the natural gas liquefaction unit and is used for combusting raw material natural gas to generate power and transmitting electric power to the natural gas liquefaction unit; one end of the flue gas capturing and recycling unit is connected with the gas turbine power generation unit, and the flue gas capturing and recycling unit is used for receiving flue gas discharged by the gas turbine and carrying out deep purification and CO2 enrichment and separation on the flue gas; the other end of the cold energy recovery unit is introduced into the natural gas liquefaction unit, penetrates out and returns, and is used for realizing low-temperature liquefaction and recovery of CO2 by utilizing cold energy of the natural gas liquefaction unit; according to the system, cold energy of the extremely cold environment in the arctic region and process pressure difference energy of a large LNG factory are integrated and utilized, meanwhile, CO2 in exhausted smoke of the system is efficiently purified, enriched, captured, liquefied and recycled, the overall energy efficiency of the large LNG factory is remarkably improved, carbon reduction and emission reduction in the polar region are promoted, and the greenhouse effect is relieved.

The invention provides a method and system for geological sequestration of carbon dioxide and oil exploitation at the same time, the method is used for sequestration of target waste gas to an underground layer, the underground layer comprises a gas top layer, an oil layer and a water layer which are arranged from top to bottom, and the method comprises the steps that the target waste gas is injected into the gas top layer through a gas pipeline; petroleum in the petroleum layer is driven by gas pressure of the gas top layer to flow into the oil storage tank through the liquid pipeline; vegetation is planted above the underground layer to absorb the target waste gas overflowing from the gas top layer. The technical problems that in the prior art, after the waste gas is subjected to stratum sealing storage, the waste gas possibly leaks to the ground surface, and personnel suffocation casualties and the greenhouse effect are caused are solved.

The invention relates to the technical field of ocean energy exploitation, and provides an ocean thermoelectric power generation and carbon capture coupling system, which adopts a water-based carbon capture method, utilizes the environmental characteristics of low temperature and high pressure at a preset depth in the ocean, and adopts introduced overground water to carry out two-stage carbon capture on industrial flue gas, so that the absorption effect of CO2 is improved, and high-concentration CO2 gas can be obtained; and the absorbent is easy to obtain, low in cost, simple in technology and environment-friendly. Besides, cold energy at the preset depth in the ocean is fully utilized, ORC is introduced, electric power is output under the condition of low energy consumption, ocean thermoelectric power generation and the carbon capture process are coupled, the purpose of single-system double-benefit reduction of greenhouse effect influence while electric power is output is achieved, and the system has higher application value. Compared with the prior art, the energy consumption and the operation and maintenance cost of the system are greatly reduced.

A solar chimney salt lake brine enrichment system and method, comprising a heat collection shed, a chimney, a base, a spraying device and a partition; the heat collection shed is arranged above the base, an opening is arranged at the center of the heat collection shed, the opening is connected with the chimney, and a plurality of spraying devices are arranged on the inner lower surface of the heat collection shed; the partition is arranged on the base, and the base is divided into a plurality of brine evaporation chambers by the partition; the heat collection shed and the partition are both filled with phase change materials. The whole is a solar chimney structure, which can utilize the chimney effect and the greenhouse effect to improve the evaporation rate of the salt field brine; meanwhile, the spraying devices are arranged in the chambers formed by the heat collection shed and the partition, independent atomization and concentration of the brine are realized, the brine contacts with the air in the form of droplets, the heat exchange efficiency is improved, and more importantly, the combination and use of the phase change materials and the spraying devices can weaken the interference of external climate change, so that the brine is concentrated according to the designed route, and the controllability of the quality of the refined salt is improved.

The invention relates to a refrigeration method based on a metal organic framework (MOF) material piezothermal effect. The traditional gas compression refrigeration technology generally has the problems of high energy consumption and high carbon emission, and common refrigerants can destroy the ozone layer and aggravate the greenhouse effect. Meanwhile, an existing solid refrigeration material generally needs extremely high driving pressure, and application of the solid refrigeration material is restricted. Therefore, efficient solid-state refrigeration is realized through pressure-induced gas-solid reaction by utilizing the porous structure of the MOF material and the controllable adsorption / desorption characteristic of the MOF material. The core lies in that the refrigeration process is driven through pressure circulation, and the cooling effect is obviously better than that of an existing solid-state refrigeration technology. During working, the transmission system drives the grid plate loaded with the MOF to reciprocate between the high-pressure chamber (adsorption heat release) and the normal-pressure chamber (desorption heat absorption), and the normal-pressure chamber is continuously cooled. A traditional refrigerant and a traditional compressor are not needed, and the system has the advantages of modularization (grid expandability), small size, low noise, simplicity and convenience in maintenance, environment friendliness and the like, and is particularly suitable for miniature refrigeration application scenes.

The embodiment of the application discloses a reservoir greenhouse effect evaluation method based on a physical driving neural network, and the method comprises the following steps: collecting historical data of a target reservoir monitoring station; establishing a river reservoir one-dimensional nitrogen element transport model based on the nitrogen element transport process of the target reservoir; determining a nitrification and denitrification coefficient calibration neural network in the nitrogen element transport process of the target reservoir according to the river reservoir one-dimensional nitrogen element transport model and a corresponding to-be-optimized objective function; inputting the historical data into the to-be-optimized objective function to determine neural network optimization parameters, thereby determining nitrification and denitrification optimization coefficients; and evaluating the greenhouse gas emission of the target reservoir based on the real-time data of the nitrogen element of the target reservoir and the nitrification and denitrification optimization coefficients. The embodiment of the application accurately evaluates the greenhouse gas emission of the reservoir by utilizing the one-dimensional nitrogen element transport equation, combining the actual aquatic environment of the reservoir, and increasing the physical constraint of the nitrification and denitrification coefficient calibration process.

A greenhouse gas reduction assistance device (1) includes an information acquisition unit (11) that acquires inherent information of an assistance target business operator, the inherent information including various kinds of information related to a business of the assistance target business operator, i.e., business-related information; a calculation unit (12) that calculates a predicted value of a greenhouse gas emission amount after a certain period from the present based on the business-related information included in the inherent information acquired by the information acquisition unit, and calculates a difference between a target value and the predicted value of the greenhouse gas emission amount after the certain period; and an output unit (14) that outputs a result of the calculation by the calculation unit to the outside.

This application belongs to the field of drying technology, and specifically relates to an air source heat pump system. Current heat pump drying systems still have high energy consumption, indicating significant potential for energy conservation and emission reduction; the refrigerants used contribute to the greenhouse effect; and the operating temperature range of these drying systems is not highly adaptable. This application provides an air source heat pump system, comprising a centrifugal compressor, a drying chamber, a humid air expander, a gas-liquid separator, a drying filter, and a heat exchange assembly connected in sequence. The drying filter is connected to the centrifugal compressor, the heat exchange assembly is connected to the centrifugal compressor, and the drying chamber is connected to the drying filter. The centrifugal compressor is connected to the humid air expander via a main shaft. Indicator lights are installed on the drying chamber, displaying air status using different colors. This reduces heat loss during transfer, and the humid air expander can recover the internal energy and potential energy of the high-temperature, high-pressure, and high-humidity air in the system, improving the system's energy efficiency.

The utility model provides a ventilation interlayer aluminum plate installation structure for atrium decoration, which comprises a ventilation plate and a framework assembly, the ventilation plate is installed on a wall body through the framework assembly, the top surface of the ventilation plate is provided with a ventilation cavity, and one surface of the ventilation plate back to the wall body is provided with an air inlet communicated with the ventilation cavity. According to the scheme, when heat is gathered to the top of the atrium, hot air flows into the ventilation cavity through the air inlet and further flows into the external environment from the top outlet of the ventilation cavity, and the situation that the top heat is gathered due to the greenhouse effect and the smoke window effect can be effectively avoided; therefore, the somatosensory comfort of people in the top area can be improved.

The present application relates to the technical field of energy conversion medium, and specifically discloses a mixed refrigerant composition and a preparation method of the mixed refrigerant and application thereof.The mixed refrigerant composition comprises the following components: component A: 68-80 wt% of pentafluoroethane;component B: 18-30 wt% of 1,1-difluoroethane;component C: 2-10 wt% of hydrocarbon;wherein the hydrocarbon comprises propane, isobutane.The refrigerant prepared by using the composition has good refrigeration effect, can effectively replace R22 refrigerant, has low greenhouse effect, has an ODP value of 0, can avoid ozone layer destruction, is not flammable and explosive, and is high in safety during storage and use, and is particularly suitable for application in refrigeration devices such as air conditioners.