295results about How to "Improve heat collection effect" patented technology

The invention provides a novel composite cooker which comprises a cooker body with the thickness of 1.5 mm-5.0 mm. The thickness of the cooker wall is successively and progressively decreased by the 2 mm-3 mm space from the upper portion of the plane of a cooker bottom to the edge of the cooker wall. The cooker body comprises an inner layer cooker body and an outer layer cooker body, the inner layer cooker body is made of one of iron, iron-base alloy, stainless steel, titanium and titanium alloy, the outer layer cooker body is made of aluminum alloy or pure aluminum or AZ31B magnesium alloy or magnesium alloy, and a magnetic conduction energy storage layer is pressed on the outer surface of the outer layer cooker body. The materials of the inner surface of the cooker is healthful and sanitary, the heat conduction performance of the outer surface of the cooker is good, the outer surface is light in material, the magnetic conduction energy storage layer is arranged on the outer portion of the cooker bottom, the heat collection effect of the cooker bottom is increased, cooking energy consumption is reduced, and the application range of the cooker is expanded. The invention further provides a manufacturing method of the novel composite cooker. The method is easy to operate, saves materials, reduces cost, and is convenient to implement and beneficial to industrialization of the novel composite cooker.

The invention provides a vacuum magnetron sputtering coating production line system of a continuous solar energy collector chip. The system comprises an upper chip board, a dustproof heating chamber, a chip inlet area, a coating area, a chip outlet area, a lower chip board, evacuators and a transmission mechanism penetrating through the whole production line system. The technical key points of the system are characterized in that each part is connected in sequence; and the evacuators are arranged at the two sides of the production line system. In the system provided by the invention, a modular structure is used and a whole plate solar energy collector chip is horizontally conveyed, thus realizing the continuous coating production from an atmosphere state to vacuum coating and then from the vacuum coating to the atmosphere state. The production line system has the advantages that an ideal spectral selection coating can be prepared on a large-area whole plate solar energy chip; and the coating is even, and is good in physicochemical performance and long in service life. By means of the production line system provided by the invention, mass industrial production of the selective absorption coatings of the solar energy collector chips can be realized, thus the production efficiency is improved, the cost is reduced, and pollution is not generated during the production process.

The invention relates to a separate solar-energy water heater, which comprises a heat collector formed by glass vacuum tubes, a water bank, a heat collector water inlet tube and outlet tube between the collector and the water bank to form the cycle system, the water bank cold water inlet tube and the water bank hot water outlet tube, a ventilating hole connecting the collector and the air, a couple bank on the collector, a closed electromagnetic valve on the inlet tube of collector, a computer control plate for controlling said cycle system, and a one-way valve on the outlet of collector for controlling hot water to flow to the water bank. The invention can reduce the cost and improve the heat collection efficiency.

The invention relates to a multifunctional spectrum selective encapsulation material. The material comprises a substrate, and a black polyvinyl fluoride-polyester-polyvinyl fluoride (TPT) material layer, a photovoltaic cell and a spectrum selective composite material layer are sequentially arranged on one side of the substrate; and the spectrum selective composite material layer is compounded by a selective reflective film and a selective emission film. The transmittance of the spectrum selective composite material layer at the solar radiation band of 0.2-3mu m is more than 0.8, the emissivity at the ''atmospheric window'' band of 8-13mu m is more than 0.8, and the reflectivity at the band of more than 13mu m is more than 0.9. By adopting the material, electric energy and heat can be obtained by day via solar photovoltaic heating, and cold can also be obtained at night via radiation refrigeration, so that the limitations of traditional solar PV / T systems and radiation refrigeration devices are effectively solved.

The invention relates to a pressure-bearing type solar collector based on a groove-type parabolic mirror. The parabolic mirror is characterized by comprising an elliptical reflecting canister, a housing, a groove-type parabolic condenser and a pressure resistant metallic heat collection pipe group, wherein the reflecting canister adopts an elliptical stainless steel mirror reflecting canister or a glass reflecting canister; a light inlet is formed in the elliptical reflecting canister; the housing is arranged outside the reflecting canister; a gap between the housing and the reflecting canister is filled with heat insulating materials; the pressure resistant metallic heat collection pipe penetrates the reflecting canister; and the light condensation focus of the groove-type parabolic condenser is positioned at one focus near or around one side of the light entrance port. According to the solar collector provided by the invention, the heat absorbing medium is positioned in the pressure resistant metallic heat collection pipe groups in the black body cavity, so as to enable the whole heat-collector to manufacture the pressure-bear structure smoothly, the requirement of the process and material is decreased greatly, the manufacturing cost of the pressure-bearing type solar collector based on the groove-type parabolic mirror is decreased, the performance of the heat collector is more steady and reliable, and the safety coefficient is high.

The invention relates to a manufacture process of a thermal insulation bucket of hard composite graphite felt for a single crystal furnace. The manufacture process comprises the following steps: selecting a blank material; winding composite graphite felt on a winding machine; curing and molding the blank; purifying the blank; mechanically cutting and processing the blank; polishing the surface; removing dust; processing the coating; and purifying the coating. The thermal insulation material of the hard composite graphite felt for the single crystal furnace has hard delamination, high strength,good thermal insulation effect, high purity, small density, high oxidation resistance and long service life, takes the energy-saving effect, replaces a graphite bucket, saves great space in the furnace and increases the crystal-pulling size of the single crystal furnace.

The invention provides a glass metal bonding sealing process based on the force thermoelectric coupling condition. Mechanical pressure sealing and anode bonding are combined and applied to the sealing of metal and glass, double advantages of mechanical pressure sealing and anode bonding are integrated, related processes are simplified, the glass and metal quickly approach under certain impact pressure at relatively low bonding temperature, and the production efficiency and later success rate are improved; meanwhile, with the beneficial effects of anode bonding, the defects of single physical press fit in mechanical pressure sealing are thoroughly overcome, and obvious chemical bond combination is formed between the glass and metal, thereby greatly improving the stability and reliability of the sealing interface and ensuring that a finished glass-metal sealing type evacuated collector tube does not leak air in a long-time medium and high-temperature thermal application process and remarkably high vacuum degree and heat collection property are still maintained; moreover, batch production is easy to realize.

The invention discloses a light-gathering seawater desalination device and a seawater desalination method. The seawater desalination device includes: a semielliptical solar heat collection cover, wherein a freshwater collection tank is arranged at the bottom of the inner wall of the solar heat collection cover, the freshwater collection tank defines an evaporation plane at the bottom of the solarheat collection cover, a freshwater outlet is arranged in the freshwater collection tank, the freshwater outlet is connected with a freshwater storage unit, the b-axis length of the solar heat collection cover is longer than the a-axis length of the solar heat collection cover, and the b-axis is perpendicular to the evaporation plane; a light gathering member, wherein the light gathering member isconfigured to gather sunlight radiated to the solar heat collection cover; and a cooling unit, wherein the cooling unit is arranged outside the solar heat collection cover, and is configured to coolthe outer surface of the solar heat collection cover. The light-gathering seawater desalination device can be directly used on the water surface (such as the sea surface), and has the advantages of simple structure, low cost, convenience in use, high solar energy utilization rate, high seawater desalination efficiency and high water purification efficiency.

The present invention relates to a solar heat-absorbing plate core coated with selective absorption composite film and its preparation method. The basic structure composition of solar heat-absorbing plate core is characterized by that the selective absorption coating-heat-absorbing film coated on the heat-absorbing surface of heat-absorbing metal plate by adopting magnetic control sputtering process is aluminum-nitrogen aluminum (Al-N / Al) composite coating or aluminum-stainless steel-copper (A-ss / Cu) composite coating; and on the heat-absorbing film an optical protective film is coated, said optical protective film has high light transmittance and high weatherability.

The invention discloses an embedded integrated gas cooker. An integrated groove is enclosed by a bottom shell, and a through hole which corresponds to the groove is formed in a panel; a burner, a pan bracket and a control knob are arranged in the groove, the burner is arranged at the bottom of the groove and is embedded into the bottom shell, the pan bracket is correspondingly hung just above the burner, the pan bracket is lower than the panel, the control knob is arranged on one side of the groove and is embedded into the bottom shell, and the control knob is connected to the burner by virtue of a gas path. According to the embedded integrated gas cooker, the overall occupied space of the cooker can be reduced, and the cooking operation is convenient and stable.

The invention belongs to the field of municipal transportation, and particularly relates to a light-condensing-type self-cleaning road reflecting mirror. The light-condensing-type self-cleaning road reflecting mirror comprises a bracket, a shell is fixedly connected to the upper end of the bracket, the side wall of the shell is provided with an opening, a convex-surface reflecting mirror body is fixedly connected into the opening, an inclined planar reflecting mirror body is fixedly connected into the shell, and the included angle between the planar reflecting mirror body and the inner bottomsurface of the shell is 45 degrees; the upper side wall of the shell is provided with a light inlet, a reflecting layer is arranged at the concave surface of the convex-surface reflecting mirror body,a horizontal liquid storage cylinder is fixedly connected into the shell, the axis of the liquid storage cylinder penetrates through a focal point of the concave surface of the convex-surface reflecting mirror body, a piston block is sealedly and slidingly connected into the liquid storage cylinder, a closed space formed by the piston block and the liquid storage cylinder is filled with evaporating liquid, a transmission strip is fixedly connected to the other side wall of the piston block, and the inner side wall of the shell is provided with an arc sliding groove matched with the transmission strip. The light-condensing-type self-cleaning road reflecting mirror does not need to be driven with power, solar energy is fully utilized for cleaning the reflecting mirror, the energy is saved,and the environment is protected.

The invention discloses a rapid electric auxiliary heating device for a solar water heater. The heating device comprises an inner container of the water heater, a water inlet pipe, a water outlet pipe and a heat accumulation guide flow cylinder, wherein the water inlet pipe and the water outlet pipe are both communicated with the inner cavity of the inner containner; the inner cavity of the inner container is provided with an electric heating tube; the heat accumulation guide flow cylinder is sleeved on the electric heating tube; the heat accumulation guide flow cylinder is provided with a water outlet; and the water outlet is positioned at the side of a water inlet port of the water outlet pipe. The heating device provided by the invention has the advantages that on the basis of not increasing the power of a heating pipe, the effect of rapid hot water generation of the water heater is realized, the structure is simple, the heat accumulation effect of hot water is good, and rapid high hot water output volume is reached; and when hot water is not used,, the temperature of the hot water at the middle and upper part of the inner container rises through the heat exchange of the hot water gathered close to the water outlet pipe to perform preheating, thus semi-inner container heating can be realized, and the use performance of an electric water heater or the solar water heater is improved greatly.

The invention relates to a collecting tube of a polymer-based solar collector, which is prepared and formed by adding thermal conducting agent and solubilizer to a polymer matrix, and then is plated with a light selectivity film. The collecting tube has more significant heat collection effect and longer service life so that the solar collector has better heat collection efficiency and heat insulation effect. An optimized collecting tube formula ensures better light and oxygen aging resistance and better heat collection effect of the collector.

The invention provides an adjustable support structure of solar thermal collector with adapted sunlight dip angle, belonging to the technical field of solar thermal collector. The support structure comprises a pair of support bodies, a beam used for connecting the pair of support bodies, and a thermal collecting pipe bearing connected between the pair of support bodies for supporting the thermal collecting pipe of the solar thermal collector. The two parts of the pair of support bodies respectively comprise a water tank holder, a vertical supporting leg, an inclined supporting leg and connecting rods of the supporting legs. The water tank holder is connected with the upper parts of the vertical supporting leg and the inclined supporting leg, and the connecting rods of the supporting legs are connected between the vertical supporting leg and the inclined supporting leg. The support structure is characterized in that the lower parts of the vertical supporting leg is connected with an adjusting leg, and the pivot at lower part of the inclined supporting leg is provided with an adjusting foot. The support structure of the invention has the advantages that the simple structure facilitates the processing, the manufacturing, and the adjustment during the installation, through the adjustment of the adjusting leg, the dip angle of the whole support body can be changed, thereby achieving the adaptation of the sunlight dip angle for the thermal collecting pipe supported on the support body to obtain the optimum lighting angle and improve the thermal collecting effect.

The invention belongs to the technical field of solar converters and in particular relates to a double-effect solar accumulative black tube. The solar accumulative black tube comprises an automatic tracking parabolic reflector, a double-effect solar accumulative black tube and a bracket, wherein the double-effect solar accumulative black tube comprises a solar cell film, a cooling water pipe, a heat insulating layer and a flange. In the invention, solar energy is accumulated by utilizing the automatic tracking parabolic reflector, then enters the double-effect solar accumulative black tube through a gap and is converted into electric energy through the solar cell film in the double-effect solar accumulative black tube, and redundant heat energy is absorbed by a cooling water pipe to realize the double-effect functions of power generation and heat collection. The double-effect solar accumulative black tube has the advantages of high solar utilization rate, small solar cell area of unit generating power, clean solar cell panel, easy maintenance and long service life and is convenient to scaled industrial production and beneficial to reducing the cost and the carbon discharge quantity of a unit generated energy.

The invention relates to a heat collecting device of a water heating system, in particular to a heat collecting board achieving flow channel same-stroke constant pressure distribution. According to the heat collecting board, working media in a flow channel are evenly distributed, and the effective heat collecting area can be enlarged. The heat collecting board comprises a board body and the working medium flow channel formed inside the board body. The working medium flow channel comprises main flow channels and branch flow channels. The board body is provided with a master flow channel inlet and a master flow channel outlet. The master flow channel inlet is connected with the main flow channels through a same-stroke flow divider. The main flow channels are the same in flow stroke. The other end of each main flow channel is connected with the branch flow channels through a same-stroke flow divider. The branch flow channels are the same in flow stroke. Each branch flow channel is provided with a reducing section. The reducing sections are the same in length and diameter. The tail ends of the branch flow channels are gathered and then are connected with the master flow channel outlet. The master flow channel outlet is formed in the upper end of the board body. According to the heat collecting board achieving flow channel same-stroke constant pressure distribution, by means of the same-stroke constant pressure distribution of the working medium flow channel, the working media are evenly distributed in the working medium flow channel, the effective heat collecting area is enlarged, and the heat collecting effect is improved.

The invention relates to the technical field of facility agriculture, and discloses a southern-northern solar greenhouse for energy collection and thermal storage. The southern-northern solar greenhouse comprises a framework, greenhouse films, thermal preservation quilts, a rear wall, end walls and thermal collecting rooms, the rear wall extends in the east-west direction, and the end walls are arranged at the two ends of the rear wall. The framework is arranged on the rear wall and extends in the south direction and the north direction respectively, the films cover the framework, and a southern greenhouse body and a northern greenhouse body are formed. The thermal preservation quilts cover the greenhouse films. The rear wall is provided with the thermal collecting rooms. Each thermal collecting room comprises two side walls, a thermal collecting wall attached to the northern ends of the side walls and a light-transmitting plate attached to the southern ends of the side walls. Northern cold air inlets are formed in the lower portions of the thermal collecting walls, northern hot air outlets are formed in the upper portions of the thermal collecting walls, southern cold air inlets are formed in the lower portions of the thermal collecting rooms, and southern hot air outlets are formed in the upper portions of the thermal collecting rooms. The thermal storage and energy collection are carried out in the northern greenhouse body through the thermal collecting rooms in the daytime, the greenhouse bodies are covered with the thermal preservation quilts at night, thermal losses of the air outlets are reduced, the diurnal temperature of the southern greenhouse body and the diurnal temperature of the northern greenhouse body at winter are improved, and the yield of crops is improved.

The invention belongs to building energy saving and new energy resource utilization technique field. It is semi-automatic built-in roller shutter device used in light and temperature control of the solar building. Its features are introducing the special curtain in common building into passive form solar building; improving it to set the roller shutter in the air space of the solar building heat collection wall. Its advantages are that rolling the shutter according to outdoor meteorological and indoor thermal environment parameter and cooperating with hand pull rope. The control end is set display panel. Its power source is supplied by solar energy photocell. The user can directly see the roller shutter control state and indoor temperature parameter. The roller shutter can preserve heat in winter, shade sun in summer.

The invention relates to a solar seawater desalting system. A solar heat collector array is connected with an oil pipeline in a seawater evaporating tank, the inner side wall of the seawater evaporating tank is provided with an atomizing spray head, the atomizing spray head is connected with an unevaporated seawater outlet on the lower end of the seawater evaporating tank and a cold seawater outlet of a condenser through a cycling pump, and a steam outlet on the upper end of the seawater evaporating tank is connected with a steam inlet of the condenser. A coiled pipe is fully distributed inside the condenser, a water inlet of the coiled pipe is connected with a throttling valve for controlling the cold seawater inlet quantity, and a liquid water outlet on the lower end of the condenser is connected with a fresh water collecting device. The solar seawater desalting system does not need external energy, the radiation energy is converted to the heat for heating the working medium oil through the solar heat collector, and the heat is transferred to the seawater in the evaporating tank through the circulation of the oil inside the pipeline so as to heat the seawater. In addition, the atomizing spray head is also installed inside the evaporating tank, so that the heated area of the seawater is increased, and the evaporation of the seawater can be accelerated. The steam is condensed into the fresh water through the condenser, so that the desalting of the seawater can be realized.

The invention discloses a wall-mounted pressure-bearing solar water heater comprising a bracket (1), wherein the bracket (1) is provided with a hot water tank (2); and the lower end of the hot water tank (2) is movably connected with vacuum glass heating tubes (11) which are evenly distributed by virtue of a vacuum glass tube socket (15). The wall-mounted pressure-bearing solar water heater is characterized in that the hot water tank (2) is internally provided with a heat-exchange inner container (13); each vacuum glass heating tube (11) is internally provided with a heat-exchange tube (12); the lower end of the heat-exchange inner container (13) is movably connected with heat exchange tubes (12) which are evenly distributed; the hot water tank (2) is provided with a water inlet tube (5) and an water outlet tube (6); and the heat-exchange inner container (13) is provided with a heat-exchange medium inlet tube (14) and an overflow tube (9). The wall-mounted pressure-bearing solar water heater has the advantages of good heat collection effect, low cost and long service life, does not occupy indoor space and is convenient to maintain and install.

The invention relates to a heat collector, in particular to a flat plate solar heat collector, solving the problems of high plate core price, poor heat collection effect of the prior solar collector and great heat energy waste due to the loose joint of the prior collector. A frame insulation layer is arranged on a peripheral inner wall of a rectangular frame and arranged on the upper end surface of a soleplate in the rectangular frame; water inlet pipes and water outlet pipes are arranged in the rectangular frame along the length direction; a plurality of stainless steel pipes are arranged inparallel between the water inlet pipes and the water outlet pipes; one end of each stainless steel pipe is communicated with a water inlet pipe, and the other end of each stainless steel pipe is communicated with a water outlet pipe; a heat-collecting plate is fixedly mounted between two adjacent stainless steel pipes; and a heat-absorbing coating is coated on the upper surface of the heat-collecting plate which has an arc cross section. The collector plate has large heat-absorbing area and good collection effect and improves the heat energy utilization due to the arc cross section. The invention also has the advantages of simple structure, reliable operation, low cost, and the like.

The invention discloses an integrated system for production, storage, transportation and utilization of hydrogen energy on the basis of solar energy and biomass gasification. The integrated system comprises four parts namely a hydrogen production sub-system, a hydrogen storage sub-system, a hydrogen transportation sub-system and a hydrogen utilization sub-system, wherein the hydrogen production sub-system comprises a heliostat, a gasification reactor, a pre-heater and a cooling purifier; the hydrogen storage sub-system comprises a new gas compressor, a gas-steam combined cycle device, a methanol heat exchanger, a methanol synthetic tower, a gas-liquid separator, a rectifying tower and a methanol tank; the hydrogen transportation sub-system comprises a transportation device, wherein the methanol tank is connected with a methanol storage station by virtue of the transportation device; the hydrogen utilization sub-system comprises the methanol storage station, a trough type solar absorber / reactor, a hydrogen pressure swing adsorption purification device, a city gas pipe network system, a hydrogen station and a fuel cell. By adopting the integrated system disclosed by the invention, hydrogen can be prepared by making full use of renewable energy sources; the efficient storage and long-distance transportation of hydrogen energy can be realized by virtue of a high-quality carrier namely methanol; moreover, the problems of unbalanced resource distribution and economic development at present are solved.

The invention relates to the technical field of power equipment, and further discloses a vacuum arc-extinguishing chamber contact protection device that comprises an insulating cover, a main shieldingcover, a static contact and a moving contact; a suction pipe is fixedly connected to the inner wall of one side of the main shielding cover, a sealing piston is fixedly installed on the inner wall ofthe suction pipe, a plunger rod is arranged in the suction pipe and movably connected with the sealing piston in a sleeved mode, and an upper plunger and a lower plunger are fixedly connected to theupper end and the lower end of the plunger rod respectively. A heat collection box and the suction pipe are arranged on the two sides of the contact respectively; on one hand, part of metal steam is received in time through the side edge of the heat collection box; on the other hand, after the heat collection box absorbs heat, internal gas expands, and the lower plunger is pushed to move downwards, so that a similar injector composed of the upper plunger and the suction pipe can suck the metal steam near the contact in time; the content of the metal steam at the contact can be quickly reducedby matching with the heat collection box, the amount of the metal steam falling back to the surface of the contact is greatly reduced, and the use safety of the contact is protected.

The invention relates to a photovoltaic-driven household split flat-plate type solar water heater which belongs to the field of solar energy utilization devices and solves the problems of system-widepress-resistance and forced circulation. The photovoltaic-driven household split flat-plate type solar water heater adopts a flat-plate type heat collector (1) which directly constitutes a forced water circulation system with a water storage tank (10) through a photovoltaic pump (11) which is driven by a photovoltaic power supply (12), and the photovoltaic power supply (12), the photovoltaic pump(11) and the flat-plate type heat collector (1) are arranged on a rack respectively or in a three-in-one manner. The photovoltaic-driven household split flat-plate type solar water heater has the advantages of good heat collection effect, less heat loss, rapid startup temperature increase, system-wide press-resistance, smooth operation, reliability, long service life, ability of maximizing the utilization of solar energy resources, synchronous light-heat conversion and photoelectric conversion, automatic intelligent control of forced water circulation, simple structure, ability of saving energy and resources, economy, practicality and strong applicability, thereby being particularly applicable to multi-storey and high-rise residential buildings in cities, facilitating standard design and manufacture and being easy to be matched with the corresponding architectural design for construction and installation.

The invention discloses a solar vacuum heat-collecting tube with a fluid mixer. The solar vacuum heat-collecting tube comprises an external glass tube, a metal tube packaged in the external glass tube and a packaging device. The packaging device further comprises metal corrugated tubes and kovar alloy tubes. Vacuum cavities are formed by the external glass tube and the metal tube. A sunlight selective-absorption coating is coated on the surface of the metal tube. The fluid mixer is arranged on the metal tube. The fluid mixer plays a role in disturbing and mixing of fluid in the solar vacuum heat-collecting tube to facilitate temperature of the fluid in the solar vacuum heat-collecting tube to be uniform, so that pipeline bending damages to the heat-collecting tube caused by an overlarge temperature difference between a condensation side and a non-condensation side are prevented, and bending and cracking of the insulating glass tube are avoided. With the technology of the fluid mixer, service life of the heat-collecting tube can be prolonged, and heat-collecting efficiency of a heat collector can be improved.

The invention relates to an automatic leak-stopping device for the breakage of an all-glass solar vacuum tube; wherein, the nozzle of the solar vacuum tube is provided with a floating ball which is slightly bigger than the tube diameter, and a height limiter which can prevent the floating ball from passing is arranged above the floating ball. Or the nozzle of the solar vacuum tube is provided with a fixed cylinder and the floating ball which is slightly bigger than the inner neck of the cylinder, and the height limiter which can prevent the floating ball from passing is arranged above the floating ball. The floating ball is the high temperature resistant material ball. The fixed cylinder is fixed by an internal sleeve and an upper cylinder, the internal sleeve of the cylinder is embedded in the glass solar vacuum tube, the upper cylinder of the cylinder and the outer tube of the vacuum tube have the same diameter, and a neck is arranged at the connection part between the inner sleeve and the upper cylinder. The device of the invention fully adopts a mechanical structure, and the ball floats at the top part of the device when in normal work; a solar vacuum thermal-collecting tube is communicated with a water tank or a union device, after the all-glass solar vacuum tube is broken, the water is leaked from the nozzle under the action of natural gravity, the water leakage can cause the vacuum tube and the device to generate negative pressure, so that the floating ball can be absorbed and falls to the neck area of the device under the double actions of pulling and water leakage pressure, so as to lead the device to be in a closing and sealing state.

The invention discloses a phase change heat storage solar water heater with enhanced heat absorption capability. The phase change heat storage solar water heater is characterized by comprising a plurality of heat absorption and storage units and at least one heat absorption unit, wherein each heat absorption and storage unit comprises a solar evacuated collector tube in which a phase change heat storage material is arranged, and a heat exchange tube is arranged in the phase change heat storage material; each heat absorption unit comprises a solar evacuated collector tube in which a heat exchange tube is arranged; and the heat exchange tubes of the heat absorption and storage units are communicated with the heat exchange tubes of the heat absorption units to form a passage. According to the phase change heat storage solar water heater, a heat collection area is enlarged by adding the evacuated collector tubes, so that the heat collection capability is improved; a natural circulation mode is used for transferring heat, so that the phase change heat storage solar water heater is simple in structure and low in cost; and the addition of the phase change heat storage material is avoided, so that the cost can be controlled, and meanwhile, the water heater can be prevented from being overweight.

The invention discloses a solar water heater with an auxiliary heater. The solar water heater with the auxiliary heater comprises a water storage tank, the auxiliary heater, an installation frame, a heat collecting tube, a sealed connection piece, a water inlet pipe, a water outlet pipe, a rainwater collecting tank, a water collecting groove, a water return pipe, a filter screen, a heat collectingtube cleaning assembly and a reflector plate angle adjusting assembly, wherein the auxiliary heater is arranged in the water storage tank; the water storage tank is connected with the installation frame; the installation frame is provided with a front support frame and a back support frame; the front support frame is connected under the heat collecting tube; the upper end of the heat collecting tube communicates with the water storage tank through the sealed connection piece; the heat collecting tube is connected with the heat collecting tube cleaning assembly; and the back support frame is connected with the reflector plate angle adjusting assembly. According to the solar water heater with the auxiliary heater provided by the invention, the double-layer heat collecting tube is arranged,and a heat conducting fin is matched for transferring heat, so that cold water in the heat collecting tube is heated uniformly; by utilizing the belt drive and the pulling of a pulling rope I, the surface of the heat collecting tube is cleaned, so that a heat collecting performance is ensured; and a bevel gear I meshes with a bevel gear II so as to wind and unwind a pulling rope II, and the angleof a reflector plate is adjusted, so that sunshine is reflected to the back surface of the heat collecting tube, and a heat collecting performance of the heat collecting tube is improved.

The invention discloses a solar air heating collector which comprises an air header and vacuum tubes perpendicular to the axis of the air header. Each vacuum tube is a blind tube with open end and the other closed end, cold air flowing channels and hot air flowing channels parallelly arranged and spaced are arranged in the air header, air inlet tubes communicated with the cold air flowing channels and air outlet tubes communicated with the hot air flowing channels are arranged on the air header, the open ends of the vacuum tubes are in sealed connection with the outer wall of the air header and then is communicated with the hot air flowing channels, a cold air guide tubes with two open ends are arranged in each vacuum tube, one end of each cold air guide tube is close to the closed end of the corresponding vacuum tube, the other end of each cold air guide tube is communicated with the corresponding cold air flowing channel. By arranging the cold air guide tubes in the common vacuum tubes and utilizing the vacuum tubes to absorb solar radiation energy and collect heat, hot air is discharged through exchange with cold air pressed by a fan, so that cold air can obtain much heat and accordingly can be heated, the solar energy heat is fully utilized, the heat collecting effect is improved, energy is saved, and the using cost is reduced.