441results about How to "Mitigate the heat island effect" patented technology

The invention relates to a cement concrete permeable brick, a cement concrete permeable road and production methods thereof. At present, most of urban construction adopting the rigid hardened ground has the problems of dust blowing at a fine day, water accumulation and impermeable ground at a rainy day, no groundwater level supplement, no relief of urban heat island effect, and the like. The invention aims to develop a cement concrete permeable brick, a cement concrete permeable road and production methods thereof. The cement concrete permeable brick is formed by pressing and molding a base material layer and a surface material layer, and both the base material layer and the surface material layer contain cement, sand, stone, water adsorbing resin, asphalt powder, diffusant and a water reducing agent. The production method of the permeable brick is realized by molding the permeable brick by a computer full-automatic building block forming machine; and the production method of the cement concrete permeable road is realized by directly pressing the cement concrete permeable road through a road roller. The invention can achieve the aims of water adsorption, water retention, permeability and practicability, can be widely used for a highway, an airport runway, a roadway, a footway, a square, garden construction, and the like and solve the problem of road icing.

The embodiment of the invention provides a reflective heat-insulation coating and a preparation method thereof. The reflective heat-insulation coating comprises the following raw materials of aqueous pure crylic acid resin, aqueous elastic resin, titanium dioxide, ceramic hollow microspheres, infrared powder, a flame retardant, water, an organic dispersant, a film-forming additive, an antifreeze, a thickener, an anti-foaming agent, a wetting agent, a preservative and a pH value regulator. The coating is a single-component aqueous coating, has no toxicity and good weatherability; extremely fine hollow microsheres are closely arranged by multi-stage in the coating to form a vacuum layer so as to have extremely strong reflection and obstruction function to the solar radiation heat and can effectively reduce the radiation heat transfer and convection heat transfer, thus reducing the heat balance temperature on the surface of the article. The reflective heat-insulation coating leads the building space and the facility container to be warm in winter and cool in summer, reduces the heat island effect and energy consumption of the air conditioner, has obvious energy-saving effect, and reduces the surface temperature by 20 DEG C to a maximum extent and reduces the internal temperature by 5-10 DEG C compared to the normal coating.

The invention discloses pervious concrete of recycled aggregate and a preparation method thereof, and belongs to the technical field of pervious concrete of recycled aggregate. The pervious concrete of the recycled aggregate comprises the following components by mass percent: 71.77-73.16% of coarse aggregate, 18.88-19.04% of cement, 6.58-8.14% of water and 1.21-1.22% of silica fume, wherein the recycled aggregate and the natural aggregate accord with the stone utilization standard II, the mixing amount of the recycled aggregate can be customized according to the actual performance index, the cement is 42.5-level ordinary portland cement, and the mixing amount of the silica fume is 6% of the dosage of a binding material. The preparation method comprises the following steps: agitating, vibrating, molding and floating. The mix proportion is designed by adopting a volume process, and the concrete is prepared according to the scheduled preparation process. By adopting the pervious concrete of the recycled aggregate, on the one hand, the problem of recycling of the waste concrete can be solved, on the other hand, underground water can be effectively supplied, collected and purified, and water resources are repeatedly utilized, so as to relieve the 'heat island effect'.

The invention discloses a source rainwater purification and storage system based on low impact development. The source rainwater purification and storage system comprises a permeable pavement road and a concave herbaceous field. The permeable pavement road and the concave herbaceous field are connected, the bottom of the concave herbaceous field is provided with a bioretention layer, the bioretention layer comprises a biological layer, a sand layer and a gravel layer that are distributed in order, the bottom of the gravel layer is provided with a rainwater collection tank, the joint between the gravel layer and the rainwater collection tank is externally provided with a geotechnical cloth, the rainwater collection tank is composed of several rainwater collection modules, the upper parts of the tank wall on two sides of the rainwater collection tank are respectively provided with an overflow pipe, the rainwater collection tank is equipped with a water level monitoring device, by adopting a module mutual splicing method, the construction becomes convenient and the construction period is short, the collected rainwater can provide water needed for growth of green plants on the ground for a long time, natural rainwater is effectively utilized to reduce the consumption of the tap water employed by people to irrigate plants. At the same time, retention rainwater is stored to reduce surface runoff, thus being conducive to construction of sponge cities and protection of the ecological environment.

The present invention relates to a method of regulating and controlling surface temperature of concrete or asphalt structure (the structure) and the like, as well as atmospheric or air temperature around the structure by encapsulating and containing temperature (thermal) control materials (TCMs) or / and water in the structure which constructs or constitutes pavements, roofs, parking lots, walls and the like. Volume ratio of water and one or more TCMs encapsulated and contained in the structure are from 0.01% to 99.99%. Based on simulation analysis, on one hand, the present invention, in summertime, can reduce the highest temperature on surface of the structure by up to 56.5% (reduced by about 46° C.), and reduce the highest temperature of air around the structure by up to 54.4% (reduced by about 48° C.), therefore “heat island” effect in urban areas in summer can significantly be reduced, thus saving cooling energy and benefiting human health. On the other hand, in wintertime, by the invention the surface temperature of the structure can be raised by up to 5.6° C., and the temperature of air around the structure can be raised by up to 5° C., accordingly heating energy demand is reduced.

The invention discloses a sponge city rainwater collecting, purifying and utilizing combination system which comprises a roof rainwater collecting area, a road rainwater collecting area, a greenbelt rainwater collecting area, a water collecting and sand settling tank, a purifying device and an impounding reservoir. An evaporation preventing layer, a soil layer, a water supply layer and a purifying layer are sequentially arranged on the roof rainwater collecting area from top to bottom. Transverse and longitudinal water collecting pipes are arranged in a bottom gravel layer of the road rainwater collecting area. An evaporation preventing layer, a soil layer, a rough sand layer and a purifying layer are sequentially arranged in the greenbelt rainwater collecting area from top to bottom. A filtering grid is arranged in the middle of the impounding reservoir, a water inlet hole and a water overflow hole are formed in the upper portion of the impounding reservoir, and a water drawing pump is arranged at the bottom of the impounding reservoir. The city environment can be greened and beautified, city rainfall flood pressure can be relieved, pollutants in rainwater can be absorbed, water resources can be saved, the rainwater utilization efficiency can be improved, and important reference significance is achieved on sponge city non-point source pollution control and city water shortage relieving.

The invention discloses a fabricated prestressed heat-resistant cement concrete pavement and a construction process thereof. The pavement is formed by splicing a plurality of fabricated prestressed heat-resistant pavement plates which are parallelly paved and connected into a whole through transverse prestressed steel stranded wires, wherein each fabricated prestressed heat-resistant pavement plate comprises a fabricated prestressed pavement plate which consists of a plurality of pavement plate blocks connected through connecting plates, and a vermiculite concrete heat-resistant paving layer which is paved on the fabricated prestressed pavement plate; each pavement plate block comprises a plurality of common plates which are connected into a whole through longitudinal prestressed steel stranded wires; and the connecting plates and the common plates are cement concrete prefabricated plate blocks. The construction process comprises the following steps of: 1, prefabricating the cement concrete prefabricated plate blocks; 2, transporting the cement concrete prefabricated plate blocks; and 3, paving the pavement. The pavement is reasonable in structural design, convenient to construct, low in input cost and short in construction period, and has heat resistance, construction quality is easy to ensure, and various practical problems of the traditional fabricated cement concrete pavement can be solved.

The invention relates to a sintered permeable environmental-friendly brick produced by using ceramic waste residue and a manufacturing method thereof. The manufacturing method is characterized by comprising the following steps of: stirring ceramic waste residue powder, waste glass powder, waste porcelain fragment powder, municipal foundation waste sludge powder, calcium oxide, calcium sulfate, bentonite, talcpowder, garbage ash residue powder, waste plant powder and water serving as raw materials to form a wet mixture, and performing mechanical vibration and extrusion molding to obtain the lower-layer brick of the permeable brick; uniformly distributing a layer of fine fabric on the upper part of the lower-layer brick of the permeable brick by using a secondary distributing machine, manufacturing a ceramic waste residue sintered permeable environmental-friendly unburned brick under the pressure of 25 to 30Mpa and naturally drying; and feeding the molded and naturally-dried ceramic waste residue permeable environmental-friendly unburned brick into a tunnel kiln for roasting, controlling the temperature to be between 1,150 and 1,200 DEG C and burning the unburned brick to obtain the ceramic waste residue sintered permeable environmental-friendly brick product. Different specifications of vegetation bricks can also be prepared from the raw materials. The product has the advantages of certain water permeability, air permeability and water retentivity, multiple functions of reducing temperature and noise, regulating climate, eliminating urban heat island effect, improving air quality, maintaining surface water circulation and the like, high strength, no pollution, low cost and good benefit, and meets the requirements of energy conservation, emission reduction, environmental protection, and the development of low carbon economy in China.

The invention provides a composite phase transition cooling bituminous paving material, wherein the material can be used for preparing a set composite phase transition material from a phase transition material with an energy storage efficacy by a sol-gel method, drying, grinding and surface hydrophobic modification are carried out, the set composite phase transition particles are obtained after dried, the set composite phase transition particles after screened is used to replace an aggregate or a filling material with certain particle sizes in an asphalt mixture, and then the composite phase transition cooling bituminous paving material is obtained. The material has a good effect for reducing the bituminous paving temperature, can raise high temperature stability of the bituminous paving, and can simultaneously relieve urban heat island effect.

The invention relates to a construction process of a roadbed structure, in particular to a construction process of a roadbed structure with sand-based water-permeable bricks. The construction process is applicable to road surfaces of squares, business streets, gardens and the like and occasions such as outdoor tennis courts, basketball courts and ground track fields. The construction process comprises the following process steps: A, performing construction preparation; B, surveying and setting out; C, performing base layer construction; D, performing bearing layer construction; E, performing leveling layer construction; F, paving the sand-based water-permeable bricks; G, performing crack pouring; H, maintaining; I, cleaning on site. According to the construction, the sand-based water-permeable bricks serve as paving materials, so that the defects brought by the materials can be overcome well. Excellent water permeability and air permeability are achieved, so that rainwater can be permeated into the ground quickly, the ground surface water is supplemented, the humidity of soil is improved, and the survival conditions of ground surface plants and microorganisms are improved; water and heat can be absorbed, and the temperature and the humidity of local space of the ground surface can be adjusted, so that a great effect of relieving urban heat island effect is achieved.

The invention relates to an intelligent temperature regulating type heat reflection heat insulation coating and a preparation method thereof. The coating is made from raw materials in parts by weight: 200-300 parts of acrylic emulsion, 150-250 parts of high reflection type phase change microcapsules, 30-80 parts of high radiation type nano-metal and metal oxide, 100-150 parts of packing with heat insulation function, 2-5 parts of a wetting dispersant, 1-3 parts of a mould inhibitor, 5-10 parts of a thickener, 4-8 parts of a defoaming agent, 15-25 parts of a film forming additive, and 100-150 parts of water. The intelligent temperature regulating type heat reflection heat insulation coating provided by the invention is excellent in performance, safe and environment-friendly, and has high reflectivity and emissivity. By utilizing the reversible energy storage and release effect of the phase change microcapsules, the temperature of the inner side and the surface of an object can be effectively and automatically regulated along with the change of external temperature so that the temperature tends to be stable so as to avoid the radical change of the temperature of the inner side and the surface of the object caused by sudden rising or dropping of the external temperature.

The invention discloses low-carbon tourmalinite modified asphalt. The low-carbon tourmalinite modified asphalt comprises: by mass, 100 parts of base asphalt, 8 to 20 parts of tourmalinite and 0 to 0.6 parts of a dispersing agent. The preparation method comprises the following steps of heating the base asphalt to a temperature of 150+ / -5 DEG C, slowly adding the dried tourmalinite into the heated base asphalt in batches, adding the dispersing agent into the mixture, manually stirring at an uniform speed for 5 minutes, stirring by a high-speed shear device at a shear rate of 1000r / min for 10 minutes, stirring by the high-speed shear device at a shear rate of 4000r / min for 30 minutes, stirring by the high-speed shear device at a shear rate of 1000r / min for 10 minutes, and removing bubbles produced in high-speed stirring to obtain the low-carbon tourmalinite modified asphalt. A result of a test shows that the low-carbon tourmalinite modified asphalt has excellent pavement performances and multiple functions of hot stirring and emission reduction, flame retardation and smoke suppression, air purification and city heat island effect reduction. Therefore, the low-carbon tourmalinite modified asphalt can be utilized as an asphalt pavement material.

The invention relates to a steamed ecological water permeable environmentally friendly brick produced by waste ceramic residues and a manufacturing method thereof. The manufacturing method is characterized by comprising the following steps of: adding a lower brick material obtained by uniformly mixing waste ceramic residue powder, waste glass powder, garbage clinker powder, portland cement, calcium oxide, calcium sulfate, sodium chloride, a rosin hot polymer, calcium sulfonate, sodium aluminate and water to a double-axis mixing stirrer to stir into a wet state, and then vibrating, extruding and molding into a lower brick of the ecological water permeable environmentally friendly brick; uniformly coating a layer of fine material of an upper brick material obtained by uniformly mixing waste ceramic fragment powder, bentonite, talcum powder and water on the upper part of the lower brick by using a secondary spreader to manufacture a water permeable environmentally friendly brick blank under the pressure of 25-30Mpa; maintaining with steam; heating at constant temperature; and naturally cooling to manufacture the steamed ecological water permeable environmentally friendly brick product of the waste ceramic residues. The raw materials of the invention also can be manufactured into vegetation bricks of different specifications. The product has certain water permeability, air permeability and water retentivity, also has various functions of cooling, reducing noise, regulating the climate, eliminating the heat island effect of a city, improving the air quality, maintaining the surface water circulation, and the like and the advantages of high product strength, no pollution, low cost and good benefit and conforms to the requirements on saving energy, reducing emission, protecting environment and developing low-carbon economy.

The invention relates to a novel compound burn-free water permeable brick and a preparation method thereof. According to the novel compound burn-free water permeable brick, the problems of high preparation cost, low strength, poor water tolerance and the like of an existing water permeable brick are mainly solved. The water permeable brick comprises a surface layer and a bottom layer, wherein the surface layer is prepared from super-hydrophilic fibers through mixing, hot press and maintenance by taking waste ceramic shattered bone as an aggregate as well as sulphate aluminum cement and thermosetting resin as bonding materials, and the bottom layer is prepared by adding materials such as water-repellent powder, water reducing agents, defoaming agents and interface enhancer by taking the waste ceramic shattered bone as the aggregate as well as ordinary Portland cement as a bonding agent. The preparation method of a coating layer comprises the steps of uniformly stirring in a certain proportion so as to obtain a mixture, putting the mixture into a forming mold, and carrying out steam maintenance, so as to prepare the burn-free water permeable brick which has good water permeability and water-retaining property and high strength and is suitable for northeast high and cold areas. Compared with traditional burn-free bricks, the novel compound burn-free water permeable brick has good water permeability and freeze-thaw stability, and a direction is provided for the comprehensive renovation work of environments.

The invention provides water-permeable cement concrete. The water-permeable cement concrete is prepared by uniformly mixing cement, stones, sand, water, a water reducing agent, stone powder or stone slag, and polypropylene fibers in a weight ratio of 1:(3.5-5.5):(0.5-0.9):(0.2-0.35):(0.01-0.02):(0.15-0.25):(0.002-0.003), wherein the using amount of the cement per cubic meter of water-permeable cement concrete is 300 to 400kg. The water-permeable cement concrete has the advantages of high strength, toughness, water permeability and air permeability, small using amount of the cement, and the like, and is easy to construct.

The invention belongs to the field of environment-friendly energy-saving building materials, and in particular relates to an ecological environment-friendly footway brick and a production process thereof. The brick comprises a brick body (1), and is characterized in that the upper surface of the brick body (1) is provided with a groove (3); the position of the groove (3) of the brick body (1) is provided with a through hole (2) in the longitudinal direction; the brick body adopts materials (1) comprising a cementitious material, aggregate and activator; the cementitious material contains slag micro-powder, red mud, C-type fly ash and kieselguhr; the aggregate adopts waste residue particles; and the activator contains polycarboxylic acid water reducing agent, power plant desulphurization gypsum, aluminum sulfate slag and fly ash. The production process comprises two parts of: 1) preparing raw materials according to the requirements, and 2) physically molding, which is to install a column-type body on a brick press mold, have the through hole (2) when the brick is physically molded and extrude the groove (3) on the surface of the brick body. The footway brick has the advantages of simple structure and high water seepage efficiency, and can effectively reduce urban heat island effect.

The invention discloses a heat reflecting paint, and a preparation method and an application thereof. The heat reflecting paint comprises the following components in parts by weight: 100 parts of fluorine-containing (methyl) acrylate polymer emulsion, 2-30 parts of reflecting pigment, 0.1-4 parts of filler, 2-40 parts of flatting agent, 1-20 parts of coalescing agent, 0.01-1 part of thickening agent, 0.01-2 parts of dispersant, 0.001-1 part of wetting agent, 0.1-60 parts of distilled water and 0.5-5 parts of cross-linking agent. The heat reflecting paint provided by the invention is high in heat reflection performance, and excellent in acid and alkali resistance, weather fastness and stain resistance. The heat reflecting paint provided by the invention is applied to a bituminous pavement; the heat reflecting paint is capable of relieving the urban heat island effect by reducing the road surface temperature, and reducing the environmental pollution generated in the use process of the coating, and also capable of improving the stain resistance of the coating and ensuring persistent cooling effect of the heat reflecting coating.

Chrysotile or chrysotile-containing serpentinite containing chrysotile is treated to convert the chrysotile contained therein into a non-asbestos material, so that the non-asbestos material is used as a material that can be recycled safely and is effective from the view point of environmental protection.[Means for Solving Problems] A curable composition characterized by containing at least a porous fibrous amorphous silica obtained by decomposing chrysotile or chrysotile-containing serpentinite with acid to substantially eliminate an influence of asbestos on living body, and a reinforcing fiber. The curable composition preferably contains a surfactant and a thickener and / or a filler and / or a colorant or an air-hardening material and / or water-hardening material and a thickener. The composition preferably contains 15 to 100% of the porous fibrous amorphous silica obtained by decomposing the chrysotile or the chrysotile-serpentinite with acid, 0 to 75% of a slaked line, 0 to 3% of a thickener, and 0 to 10% of a pulp.

The invention relates to a drainage and seepage type felting composite structure. The seepage type felting composite structure comprises a beam-slab felting structure, a permeable PC substrate, a U-shaped ecological water draining and collecting ditch, and a seepage and drainage pipe, wherein the beam-slab felting structure is assembled into a side pavement or a motorized vehicle lane; the permeable PC substrate and the beam-slab felting structure are combined into a motor vehicle lane or a square and have a load effect. The U-shaped ecological water draining and collecting ditch is installed at one side or two sides of the motor vehicle lane or the square; the drainage and seepage pipe comprises a transverse PC pipe and a vertical PC pipe; the transverse PC pipe is communicated with the U-shaped ecological water draining and collecting ditch; and the vertical PC pipe is communicated with the transverse PC pipe. The drainage and seepage type felting composite structure is permeable and breathable, can carry out earth surface heat exchange easily, can recycle rainwater effectively, reduces an urban heat island effect, is suitable for eco-environment protection, is simple in structure, and is simple to construct.

The invention relates to sponge city construction, in particular to application management of a BIM technology to sponge city construction. All modules of a sponge city BIM site construction management module are in communication connection with a BIM host. A sponge city monitor, maintenance and deploy management module comprises a data detection operating maintenance module, a riverway water level monitor module, a green land area monitor module, a green land tax-inclusive monitor module, a rainwater collection monitor module, a precipitation amount monitor module, an underground water level monitor module, a reservoir water level monitor module, a wind speed and temperature monitor module, a water source deploy module and the like. All the modules of the sponge city monitor, maintenance and deploy management module are in communication connection with the BIM host. A construction progress management module manages all construction progresses and construction management through the BIM host. A green land water evaporation simulation module simulates different vegetation green lands through the BIM host. According to the application management, design, simulation, construction and management of all sponge city construction are carried out through the BIM, and drainage, irrigation and other management are carried out by monitoring data of all positions.

The invention discloses a sidewalk pavement structure for water permeation, water storage and water discharging. The sidewalk pavement structure comprises a sidewalk, a roadway and a rainwater port communicated with a municipal water discharging system and further comprises a transverse water permeation pipe, the sidewalk comprises a water-permeable surface layer, a water-permeable leveling layer, a water-permeable base layer and an inverse filtering cushion which are arranged sequentially from top to bottom, a groove paved with a filling material is formed in the bottom of the inner side of the inverse filtering cushion, and waterproof geotechnical cloth is arranged at the bottom of the inverse filtering cushion, on the left and right sides of the groove and at the bottom of the groove; first kerbs are arranged on two sides of the sidewalk, and the transverse water permeation pipe communicates the groove with the rainwater port. The sidewalk pavement structure has good water permeating, storing and discharging functions, can effectively prevent water accumulation on the surface of the sidewalk and can relieve pressure of the municipal water discharging system under extreme raining conditions to certain extent; rainwater is avoided permeating into roadbeds, so that long-time stability of the roadbeds is guaranteed; water permeability and air permeability of the sidewalk pavement structure can be improved, and urban 'heat island effect' is relieved to certain content.

The invention discloses an ecological roof for rainwater utilization and air purification. The ecological roof comprises a plurality of wetland ecosystem modules, wherein each wetland ecosystem module is composed of a tray with water storage and water drainage structures, a root growth control layer, a plant growth matrix layer, a dustproof protection and filtering layer and a vegetation stratum. Water storage and water drainage grooves are formed inside the bottoms of the tray with the water storage and water drainage structures, water collecting pipes are arranged on the outer portions of the bottoms of the tray with the water drainage structures, and the water storage and water drainage grooves are connected with the water collecting pipes. The root growth control layer is located on the water storage and water drainage grooves. The plant growth matrix layer is located on the root growth control layer. The dustproof protection and filtering layer is located on the plant growth matrix layer. The vegetation stratum is located on the dustproof protection and filtering layer. A roof ecological system can effectively utilize rainwater, filter and clean air, improve air quality, reduce the urban heat island effect, save energy, reduce consumption, block electromagnetic radiation, and build and protect the diversity of an ecological system.

The invention discloses a cement-based radiation refrigeration dry powder paint and a building coating. The cement-based radiation refrigeration dry powder paint comprises main ingredients, accessoryingredients and functional filler, wherein the particle size of the functional filler is 1-40 micrometers. The functional filler can transform heat of the filler into electromagnetic waves in the waveband of 7-14 micrometers to emit the electromagnetic waves, so that the emissivity of the cement-based radiation refrigeration dry powder paint is 85% or above in the wave band of 7-14 micrometers, and the cement-based radiation refrigeration dry powder paint has 85% or above emissivity to light in the wave band of 300-2500 nanometers. A radiation refrigeration function is endowed to the cement-based paint, when the outer surface of a building is coated with the paint, the functional filler in the paint can emit the heat of the building to the outer space in the form of electromagnetic wavesin the wave band of 7-14 micrometers, and therefore, cooling of the building is achieved.

The invention discloses a light emitting diode (LED) lamp, comprising a storage rack, a lamp shield, a reflector panel, an LED light source module, a head cover radiator and a lamp post, wherein the storage rack is provided with two holding tanks, two ends of each holding tank are provided a plurality of bottom radiating holes, and a clip fixing arm is arranged between the two holding tanks; the lower surface of the lamp shield is provided with a clip fixing tank, the lamp shield is held in the holding tanks, and the clip fixing arm is inserted in the clip fixing tank; the reflector panel is provided with a plurality of holding tanks and punching holes corresponding to the holding tanks, and the holding tanks and the punching holes are formed by the enclosure of graded tank walls plated with reflective films; the LED light source module is provided with a plurality of LED lamps held in the holding tanks; and the head cover radiator is provided with a jack socket for the lamp post, and two sides of the jack socket for the lamp post are provided with top radiating holes communicated with the bottom radiating holes. The LED lamp has the advantages of simple structure, high luminous efficiency, good heat dissipation and longer service life, and is convenient to install.

The invention belongs to the technical control field of water collection and drainage, rainwater filtration, purification, regulation and storage, and particularly relates to a regulation and storage system with functions of rainwater filtration, purification and collection. Lawns, storage tanks, municipal pipe networks, and both sides of motor vehicle roads are respectively provided with curbstones in the shape of rectangular troughs. Below the non-slip surface layer, there is a double-layer sidewalk rainwater collection temporary storage layer to collect rainwater, and a graded gravel layer, activated carbon core filter layer, water purification layer and non-woven geotextile layer to filter seepage water. Through the collection, purification, storage, sewage interception and discharge of rainwater on the road surface, the present invention realizes the goals of peak shaving and storage, lawn conservation and water ecological restoration, and has important reference significance for the construction of "sponge city".

The invention provides a semi-decoupled cooling dehumidification and graded cooling dehumidification heat pump system. The system comprises a closed refrigerant system and two open air channels operated in parallel. The invention further provides a cooling dehumidification and graded cooling method. A dehumidifying evaporator and an evaporator serially connected are adopted to replace an evaporator in a compressive cycle and a dehumidifying evaporator in a traditional dehumidifying heat pump cycle; a circular condensation side is formed by another dehumidifying heat exchanger; and thermal circulation of continuous heat and moisture load treatment is realized through switching of a four-way reversing valve and an air way. Compared with the prior art, the system is compact in structure and lower in cost, and can realize efficient treatment and flexible matching of heat and moisture loads.

The invention discloses a green roof structure with the rainwater retaining ability. The green roof structure comprises a plant layer, a soil layer, a filtering layer, a water storage and drainage layer, a moisture preservation layer and a waterproof layer from top to bottom; the plant layer is composed of perennial herbs, namely sedum lineare, the planting row spacing is 4-6 cm, and the line spacing is 8-10 cm; the soil layer is composed of mixtures of light sandy soil, humus and vermiculite, and the thickness of the soil layer is 15-20 cm; the filtering layer is composed of polyester fiber non-woven fabrics and extends towards the side wall surface of a building to the part below surface soil by 5 cm, and the effective width of lap seams is 10-20 cm in the laying process; the water storage and drainage layer is composed of polyethylene concave-convex drainage boards with the thickness ranging from 30 mm to 60 mm; the moisture preservation layer is composed of moisture preservation blankets with the thickness ranging from 20 cm to 30 cm, and the moisture preservation blankets are arranged adjacently and closely; the waterproof layer is composed of polymer modified asphalt root-resisting waterproofing membranes. The green roof structure has the advantages that the land resources are saved, the green area is increased, the environment is beautified, the heat island effect is reduced, the storm runoff is lowered, and the air pollution is reduced.

The invention provides a cold-mix phase change type asphalt mixture for thermal energy storage, which is characterized in that: the asphalt mixture is prepared by normal-temperature mixing aggregates, porous base phase change particles for thermal energy storage, a filling material, water, and emulsified bitumen or modified emulsified bitumen with a mass ratio being 100:20-100:1-3:2-4:5-8. The porous base phase change particles for thermal energy storage are prepared by using porous fire rock aggregates as a matrix, absorbing an organic solid-liquid phase changing material in a pore structure of the matrix in a vacuum condition, coating a thermosetting resin film containing a heat conductive filling material on the surface by an immersion method, and solidifying the film for 2-4 days under normal temperature, wherein the phase change temperature is 40-70 DEG C, the phase change latent heat is 20-60j / g, and mechanical properties are good. The asphalt mixture has advantages of simple preparation technology, energy saving and environmental protection, and has good efficacy for reducing pavement temperature.

The invention discloses a water-retaining semi-flexible composite pavement injection material and a preparation method thereof. The water-retaining semi-flexible composite pavement injection material has good liquidity, can be automatically filled into an asphalt mixture of a machine body and further has good water-retaining property, relatively good durability and aging resistance, and meanwhile, a heat island effect can be effectively reduced.

The invention provides a green roofing system and relates to the technical fields of water storage and drainage of roofs. The green roofing system comprises a green roofing system body and a drainingditch, wherein a drainage pipe is arranged on one side, close to a water returning pipeline, of a water storage and drainage layer and is connected with a water storage layer; a drip irrigation pipeline is arranged in a substrate layer and is connected with a water returning pipeline; a filtering layer filters impurities seeping from the substrate layer along with rainwater; the water storage anddrainage layer drains the rainwater to the water storage layer through a drainage pipeline; a waterproofing rooting resistant layer is attached to the roof. The green roofing system provided by the invention has the advantages of saving land resources, reducing storm runoff, relieving a heat island effect to a certain degree, favorably increasing the content of oxygen in urban atmosphere, reducingatmospheric pollution and improving living environment; meanwhile, the rainwater is purified, then collected and stored for irrigating vegetation, so that ecological recycling of water is realized.