404 results about "Solar heat" patented technology

The invention relates to the technical field of drying, and discloses a solar heat collection tube heating and drying device and a tube row manufacturing method thereof.The solar heat collection tube heating and drying device comprises a first rack, and a first heat collection module is arranged on an inclined mounting platform formed by a first-stage step and a second-stage step of the first rack; a drying cavity defined by first steel plates is installed on the outer wall of the three-stage step of the first rack, and a first partition plate is arranged in the drying cavity. A second partition is arranged on the top surface of the first partition, a third partition is arranged on the side wall of the second partition, and an air delivery pipe is arranged between the third partition and the first partition; an air inlet shutter is mounted on the first steel plate, a fan opposite to the air inlet shutter is mounted on the second partition plate, and an exhaust shutter is mounted on the first steel plate; a supporting beam located above the third partition plate is arranged on the first rack, a footstand is arranged on the supporting beam, and a drying bin used for drying corn is placed on the footstand; according to the device, the solar energy utilization rate is increased through the heat collection structure, heat collection and drying chambers are reasonably partitioned, the airflow circulation path is clear, and stable drying of corn is achieved.

The invention relates to the field of solar heating, in particular to a solar heat exchange device which comprises a shell and a bottom plate, the shell and the bottom plate form a closed cavity, a heat absorption layer is arranged on the outer surface of the shell, a heat conduction pipe and a phase change energy storage material are arranged in the cavity, and the inlet end and the outlet end of the heat conduction pipe extend out of the side wall of the shell. The phase change energy storage material is arranged around the heat conduction pipe and fills the cavity, a thermal expansion layer is arranged on the inner surface of the bottom plate, and the thermal expansion layer is arranged at the bottom of the cavity. In the invention, the thermal expansion layer is located below the phase change energy storage material. When the temperature rises, the volume of the thermal expansion layer is increased and pushes the phase change material upwards, so that the liquid level of the phase change material is raised, and the phase change material can be in close contact with the top heat absorption layer continuously even in a liquid state. The problems of gaps and thermal resistance caused by volume shrinkage of the phase change material are effectively avoided, it is guaranteed that heat can be efficiently transmitted to the energy storage medium, and therefore the heat transfer efficiency of the solar heat exchange device is remarkably improved.

The invention provides an intelligent energy efficiency management method and system for a solar photo-thermal-photovoltaic-heat pump coupling system. The method comprises the steps that coupling energy state vectors including photovoltaic power generation real-time output power, the hot air temperature of an air duct outlet of a solar heat collector, the operation frequency of a heat pump compressor and the water temperature of the middle of a heat storage water tank are constructed; dynamically calculating a continuous discriminant quantity and a discrete risk sign based on the vector so as to evaluate the supply and demand trend and the energy efficiency risk of the system; generating a multi-path combined control strategy covering an electric side link, a photo-thermal link, a heat pump link and a heat storage link, and performing effective filtering on a control command in combination with an equipment state inspection result; and finally, executing instructions are issued in stages according to path priorities, so that closed-loop energy efficiency adjustment is realized. According to the invention, the cooperation efficiency and the operation safety of the multi-energy coupling system are improved.

The application provides a solar double-phase-change cascade heat storage system under an oilfield continuous heat load scene, and relates to the technical field of solar heat storage. The system comprises a heat collection, double-phase-change cascade heat storage, heat supply and flow control subsystem. The double-phase-change cascade heat storage subsystem is provided with first and second phase-change heat storage tanks with different phase-change temperatures in parallel. The flow control subsystem switches the fluid path based on the dynamic comparison criterion of the heat collection and heat storage temperatures, and directs the solar energy into the double tanks for cascade latent heat storage according to the heat energy grade. The heat supply subsystem guides the cold crude oil to sequentially absorb the heat released by the double tanks to perform cascade heating. The application overcomes the defect of low fluctuating solar energy capture rate of the traditional single-phase-change system, greatly reduces the irreversible exergy loss of heat transfer through cascade heat storage and release, improves the comprehensive utilization rate of full-band solar energy, and realizes efficient and low-carbon heat supply for oilfields.

A solar heat pump coupled multi-stage humidification and dehumidification water treatment system and a working method thereof, the system comprising a water treatment circulating subsystem, a solar hot water circulating subsystem and a compression heat pump circulating subsystem; the working method is that raw liquid is heated by solar prepared hot water and a compression heat pump condenser, sequentially enters two-stage humidifiers to exchange heat and mass with air, preheats air and discharges; circulating air sequentially undergoes two humidifications in the two-stage humidifiers, is gradually cooled and dehumidified in a pre-cooler, a dehumidifier and a heat pump evaporator, is preheated by the discharged raw liquid and then undergoes the next cycle, and condensed water obtained by condensing steam in the air is collected into a fresh water tank after heat exchange in a heat pump subcooler. The present application uses the hot raw liquid after one-stage humidification to complete two-stage humidification, uses a pre-cooler, high flow raw liquid and a heat pump evaporator to complete multi-stage dehumidification, and uses the solar hot water system to simultaneously introduce the heat pump system, thereby realizing all-weather fresh water supply demand.

The utility model provides a solar heat collection device, and belongs to the technical field of heat collection devices. A solar heat collection device comprises a frame body, a solar heat collection device and a solar heat collection device, the copper pipe is fixedly connected to the support, and the two ends of the copper pipe extend out of the frame body; the heat insulation cotton is fixed in the frame body, a containing groove matched with the copper pipe is formed in the heat insulation cotton, and the containing groove penetrates through the heat insulation cotton so that the two sides of the heat insulation cotton can make contact with the copper pipe; the two heat absorption plates are fixed to the two sides of the heat insulation cotton respectively and make contact with the copper pipe; and the two transparent cover plates are fixed on the frame body, and the two transparent cover plates are respectively distributed on the outer sides of the two heat absorbing plates.

The application discloses a solar photovoltaic heat composite driving high-efficiency energy-saving heat pump system, and belongs to the technical field of renewable energy utilization and heating ventilation air conditioning. The system comprises a photovoltaic-photothermal integrated heat collecting unit, a composite heat pump circulating unit, a multi-mode energy deployment unit, a direct-current direct-drive compressor unit, a cascade heat storage and energy storage unit, a grid-connected / off-grid switching unit, a user-side multi-working-condition terminal unit, an intelligent collaborative control unit, a night / rainy weather working condition energy supplement unit and an energy efficiency amplification optimization unit. The photovoltaic-photothermal integrated heat collecting unit simultaneously outputs direct-current electricity and low-temperature heat energy, effectively solves the problems of low operation efficiency and poor stability of the existing solar heat pump system in rainy weather and at night, simultaneously realizes multi-working-condition operation of refrigeration, heating, domestic hot water supply and grid-connected power generation, greatly improves the utilization efficiency of solar energy and the operation flexibility of the system, and has remarkable energy-saving effect and wide application prospect.

A carbon dioxide separation and recovery system having: a heat storage unit for storing solar heat and providing heat; a carbon dioxide absorption liquid circulation and regeneration mechanism that uses the heat provided by the heat storage unit to heat an absorption liquid, which absorbs carbon dioxide contained in a gas, causes the absorption liquid to be heated and regenerated, while releasing the carbon dioxide to be separated and recovered, and then causes carbon dioxide contained in the gas to be absorbed again; and a carbon dioxide gas separation and recovery function.

The present application relates to the technical field of heat pump, and provides a control method and device of a solar heat pump unit and the solar heat pump unit, the solar heat pump unit comprises a water tank, a heat pump module and a solar module for supplying heat to the water tank, the control method of the solar heat pump unit comprises: obtaining a setting mode of the solar heat pump unit; controlling the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit; wherein the solar heat pump unit has multiple setting modes, and in the multiple setting modes, the degree of user's demand for hot water in the water tank is different. The present application combines the heat pump and the solar energy as a heat source, has multiple operating modes, can achieve the purpose of saving electricity, and can match the corresponding operating mode according to the setting demand of the user, has a wide range of applications, thereby effectively improving the user experience.

The utility model discloses a medium-temperature solar heat collection plate core and a medium-temperature heat collector. The plate core comprises a medium header pipe, a heat collecting wing plate is arranged on the side portion of the medium header pipe, heat collecting blue films are arranged on the upper surfaces of the medium header pipe and the heat collecting wing plate, flow dividing holes are formed in the inlet end and the outlet end of the medium header pipe, a flow dividing cavity in the pipe direction is formed in the heat collecting wing plate, and the flow dividing holes in the two ends communicate with the two ends of the flow dividing cavity correspondingly. The medium header pipe is internally provided with a flow blocking structure which is backward relative to the flow dividing holes in the inlet end in the flow direction. The heat collector further comprises the medium-temperature solar heat collection plate core. The solar heat collector has the beneficial effects that medium fluid in the medium header pipe is shunted into the shunting cavity, and a medium in the shunting cavity is in direct contact with the heat collection wing plate, so that the contact area of the medium and the heat collection wing plate is increased; the machining and manufacturing mode is optimized, and the overall manufacturing cost is reduced; the medium header pipe and the heat collection wing plates are coated with heat collection blue films, and the solar photo-thermal conversion efficiency can be effectively improved.

The present application relates to the field of renewable energy hydrogen production, and more particularly to solar-assisted organic waste gasification and reforming hydrogen production. The system comprises a tower heat absorption device, a molten salt energy storage device, a gasifier, a catalytic reforming device, and a CO2 reaction reducer. The molten salt is heated and stored by solar heat collection, the high-temperature molten salt is used for indirect heat exchange of CO2 reduction and catalytic reforming process, the gasification process is directly heated and driven by the molten salt as a reaction medium, and the molten salt as a reaction medium has a catalytic effect to effectively inhibit the generation of tar. The system breaks through the gas production model relying on electricity, matches the tower type light absorption based on the characteristics of the molten salt, and avoids the efficiency loss caused by single medium or cross-temperature zone heat collection. Not only the energy consumption is reduced, but also a stable technical closed loop of organic waste hydrogen production under multi-level energy gradient is constructed. At the same time, the generated CO2 is introduced into the CO2 reduction reactor to complete the reduction reaction and complete the carbon cycle.

The application relates to the technical field of infrared stealth, precise thermal control and electromagnetic compatibility, and particularly discloses a film system structure with visible ultra-high reflectivity, middle-infrared and far-infrared low emissivity and microwave high permeability; the medium stack layer has high reflectivity to visible light; the metal microstructure layer has low emissivity to middle-infrared and far-infrared light and high permeability to microwaves; the film system structure has visible light reflectivity greater than 60%, middle-infrared and far-infrared light emissivity lower than 30% and microwave permeability higher than 60%. The application realizes perfect compatibility of infrared stealth and microwave absorption, keeps infrared low emissivity (epsilon < 0.1) and realizes high permeability (greater than 95%) to 1-18GHz microwave bands. The application solves the thermal failure problem of the composite stealth structure, realizes average visible light reflectivity (greater than 95%) through the medium stack layer, greatly reduces the solar heat load and improves the overall optical performance.

The utility model discloses a roof solar water heating system which comprises a flat-plate solar collector, an air source heat pump unit, a heat pump heating circulating water pump, a pipeline system and a heat preservation water tank. The flat-plate solar heat collectors are fixed on a roof foundation through a support, the flat-plate solar heat collectors are arranged in multiple rows and are connected in series through heat collector water pipes, and the two ends of each flat-plate solar heat collector are connected to the heat preservation water tank. The air source heat pump unit and the heat pump heating circulating water pump are connected to the heat preservation water tank through a circulating water pipe. The cold water supply pipe supplements cold water to the heat preservation water tank, the hot water supply pipe conveys hot water in the heat preservation water tank to all water consumption ports, and the hot water return pipe recovers unused hot water to the heat preservation water tank. The solar water heater can solve the problems that the water temperature of the solar water heater rises slowly and is unstable, residual hot water cannot be effectively utilized, and energy is wasted due to electric heating in cloudy and rainy days.

The utility model provides an auxiliary heating device of a solar energy storage and air energy control system, and mainly relates to the technical field of solar heat utilization. An auxiliary heating device of a solar energy storage and air energy control system comprises a heating water tank, a heat-conducting medium box body, an air energy heating device, a supporting frame, a solar heating device, an energy storage water tank and a control device, and the heating water tank, the heat-conducting medium box body, the air energy heating device and the solar heating device are fixedly installed on the supporting frame. A first heat exchange pipeline is arranged between the heating water tank and the solar heating device, the first heat exchange pipeline is further connected with a heat-conducting medium box body, and a heat-conducting agent circulates in the first heat exchange pipeline. By means of the modular design, solar energy and air energy can be comprehensively utilized, the heat energy transfer path and control logic are optimized, the efficient and energy-saving heating effect is achieved, the system is suitable for various scenes such as residences, commercial buildings and industrial places, and the effects of energy conservation and emission reduction are achieved.

The invention relates to the technical field of solar heat utilization, and discloses a solar methanol reforming and hydrogen separation integrated spiral hydrogen production system which comprises a reaction tube, a spiral hydrogen selective permeable membrane, a feeding system, a sweeping pipeline and the like. The temperature and flow of the feeding system and the sweeping system can be adjusted in real time according to the solar irradiation change, the reaction tube outlet exhaust temperature, the hydrogen yield and the catalyst bed temperature, optimal energy flow matching is achieved, and the energy utilization rate of the system is increased. Meanwhile, by adopting the reaction area and the sweeping area which are designed spirally, on one hand, the temperature uniformity of a reaction tube catalyst bed can be improved, and the sintering risk of a catalyst is reduced; on the other hand, by means of the rotational flow effect of the spiral structure, the hydrogen concentration polarization phenomenon can be effectively relieved, the hydrogen permeation amount is increased while hydrogen in-situ separation is achieved, and the pure hydrogen yield of the system is increased. The device has the characteristics of wide working condition application range, high methanol conversion rate, low hydrogen separation cost, compact structure and the like.

The invention discloses a boiled water preparation device and method, and aims to solve the technical problems of high energy consumption, low heat exchange efficiency, waste heat waste and fast storage temperature drop in existing boiled water preparation. According to the device, dynamic preheating of'temperature priority 'is achieved through an intelligent heat exchange unit (a solar heat exchange water tank and a waste heat recovery water tank), heat is recycled in combination with a closed-loop waste heat circulation unit, and the design of double-way shunt activation and waste heat heat preservation water storage is matched, so that energy consumption is reduced by 35%-55%, meanwhile, small-molecular-group boiled water is prepared, 24-48-hour long-acting heat preservation is achieved, and energy conservation and emission reduction are achieved. The device and the method can be used for manufacturing the boiled water meeting the healthy drinking standard of a human body, meet the policy of energy conservation and emission reduction, and are suitable for updating and reconstruction of filling water and direct drinking water supply enterprises.

A solar high-multiple light condensation heat supply Fe3O4 reduced iron powder fuel production system, including the supply device of the carbon powder and Fe3O4 powder raw material that has been stirred fully, the reaction device of the high-density sunlight energy of the absorption solar light condenser collection and the high-temperature chemical reaction of fine particle or powder raw material, the cooling device of the output reaction product of receiving reaction device and carries out cooling, the sorting device of the product of receiving cooling device in cooling and carries out sorting, the gas collection device for collecting gas product in reaction device and cooling device;The outer fixed cylinder and rotating cylinder of light transmission in reaction device form annular cavity, and the spiral boss on the surface of rotating cylinder in annular cavity carries out controllable speed transport to reaction raw material, maximizes absorption light energy and completes reduction reaction;The reduced product after cooling adopts magnetic separation with magnetic medium and non-magnetic carbon powder, and the application has the advantages of high-efficiency heat absorption of reactant, controllable transport, full recycling of solar heat energy and the like, and can realize efficient reaction and simple structure.

The utility model relates to a kind of PV / T phase change energy storage water source heat pump heating system, including heat collection circulation loop, heat transfer circulation loop, heating circulation loop;Heat collection circulation loop includes cyclically communicated PV / T photovoltaic photo-thermal plate and phase change water tank;Heat transfer circulation loop includes cyclically communicated phase change water tank and double-source heat pump;Heating circulation loop includes cyclically communicated double-source heat pump and fan-coil unit.Wherein, phase change water tank includes shell, and the first spiral pipe heat exchanger and second spiral pipe heat exchanger of shell inside being set;First spiral pipe heat exchanger is connected with PV / T photovoltaic photo-thermal plate closed loop, and second spiral pipe heat exchanger is connected with double-source heat pump closed loop.Compared with prior art, the PV / T photovoltaic photo-thermal plate of the utility model system is collected solar heat while generating electricity, and the electric energy generated can drive heat pump to operate, and heat energy is used for auxiliary heating or storage;Heat pump utilizes double-source to improve heating energy efficiency, and phase change energy storage reduces energy loss.

The invention discloses a device for extracting water from air in a plateau dry area, and relates to the technical field of extracting water from air. The partition plate is arranged in the shell and divides the interior of the shell into a desorption chamber and a water collection chamber; the adsorption bed layer is arranged in the water collection chamber and is used for adsorbing moisture in the air; the solar light-transmitting cover plate covers the top of the shell; the interior of the shell is divided into a desorption chamber and a water collection chamber through the partition plate, the adsorption bed layer is arranged in the water collection chamber and used for adsorbing moisture in air, the solar heat collection plate is arranged in the desorption chamber and used for absorbing solar radiation energy, and the heat conduction fins are connected with the solar heat collection plate and the adsorption bed layer and used for transferring heat. The radiation refrigeration plate is arranged on the outer wall of the shell and connected with the condensation cone for providing a cold source, the condensation cone is arranged in the desorption cavity for condensing water vapor, and the water collection tank is arranged below the condensation cone and communicated with the water collection cavity through a water guide pipe for collecting and conveying condensate water.

This invention provides a solar-powered full-spectrum frequency-division thermo-electric combined-drive air conditioning system and its control method, belonging to the field of solar heat pumps. It addresses the problems of existing solar-powered jet-compression combined refrigeration systems, which cannot effectively utilize all wavelengths of solar energy, suffer from intermittent instability during power supply, and exhibit low cooling efficiency due to excessively high compression ratios under high temperature difference conditions. During conventional cooling, the system allows selection of single-jet cooling, single-compression cooling, jet-compression combined cooling, or dual-jet-compression combined cooling based on daytime or nighttime conditions and cooling requirements, achieving stable all-weather air conditioning while saving energy. In addition to the conventional cooling mode, a dual-jet-compression cooling mode can be operated to achieve high temperature difference cooling while maintaining a constant compression ratio. It fully utilizes solar thermo-electricity for self-generation and consumption, enabling switching between jet and compression air conditioning modes to ensure all-weather air conditioning needs while achieving energy conservation and emission reduction.

The invention relates to the field of solar heat pump air conditioners, in particular to intelligent electricity storage equipment of a photovoltaic solar heat pump air conditioner, which comprises a heat storage box, a heat exchange tube and a cleaning mechanism, the cleaning mechanism comprises two first arc plates arranged in the heat storage box, and the two first arc plates can be spliced into a complete circular ring; the two first arc plates are located on the two sides of the heat exchange pipe correspondingly and can make contact with the heat exchange pipe, a driving mechanism used for driving the two first arc plates to slide along the heat exchange pipe is installed in the heat storage box, and a driving piece used for driving the two first arc plates to get close to each other is arranged in the heat storage box. The problem that the heat exchange effect of the heat exchange tube is affected is solved.

The utility model relates to solar water heater component technical field especially relates to an improved solar heat collecting pipe structure, including light -transmitting outer tube, the heat absorbing inner tube of setting in the middle part of light -transmitting outer tube inside, the selective absorption coating of coating in the heat absorbing inner tube outside and the heat pipe of detachable installation in the heat absorbing inner tube inside through fixed plug, the heat collecting part of setting between light -transmitting outer tube, heat absorbing inner tube and heat pipe has comprehensively promoted solar heat collecting pipe heat absorption and heat conducting effect. In the utility model, the heat conducting wire net and heat conducting support seat are arranged between the heat absorbing inner tube and the heat pipe, and a mirror surface reflecting layer is arranged on the light-transmitting outer tube, sunlight can be reflected to the lower side of the heat absorbing inner tube through the mirror surface, the contact area between sunlight and the heat absorbing inner tube is effectively increased, and the heat loss of heat transfer between the heat absorbing inner tube and the heat pipe is effectively reduced, so that the heat efficiency of the solar heat collector is comprehensively improved.

The utility model discloses a methanol reforming hydrogen production device based on solar energy and tail gas utilization, which relates to the field of new energy utilization and chemical production and comprises a solar heat collector and a methanol reforming reactor. The solar heat collector comprises a groove type paraboloid collecting lens, sunlight irradiates the collecting lens and is reflected to a focus point, and the methanol reforming reactor is located at the light reflection focus point of the groove type paraboloid collecting lens; the methanol reforming reactor comprises an aluminum alloy pipe, a tail gas flow pipe, a methanol reforming pipe, a gas inlet pipe and a gas outlet pipe; the tail gas flow pipe is nested in the aluminum alloy pipe, a plurality of methanol reforming pipes are distributed in an interlayer between the tail gas flow pipe and the aluminum alloy pipe, and the gas inlet pipe and the gas outlet pipe are communicated with all methanol reforming pipes; the aluminum alloy pipe absorbs heat generated by sunlight, and the tail gas flow pipe absorbs waste heat of tail gas circulating in the tail gas flow pipe to jointly supply heat to the methanol reforming pipe; methanol steam enters the methanol reforming pipe from the gas inlet pipe, reacts in the methanol reforming pipe to generate hydrogen-rich reforming gas, and is discharged from the gas outlet pipe.

The utility model discloses a solar heating rod convenient to install, and relates to the technical field of heating rods. The solar panel comprises a C-shaped plate and a solar assembly, wherein the solar assembly is detachably arranged on the upper side of the C-shaped plate; the mounting plates are fixedly arranged on the two sides of the bottom of the [-shaped plate, a connecting plate is fixedly arranged between the bottom sides of the two mounting plates, a round hole is formed in the middle of the connecting plate, a strip-shaped hole is formed in the side wall of each mounting plate, and a first inserting pile is fixedly arranged at the bottom of each mounting plate. According to the utility model, the hot bar body and the mounting structure are integrated together, and through the matching of the ingeniously designed C-shaped plate, the mounting plate, the rectangular frame and other components, the integral mounting of the hot bar is realized, independent punching is not needed, the mounting efficiency and the mounting precision are improved, the consistency of the perpendicularity and the mounting depth of the hot bar is ensured, and meanwhile, the mounting quality is improved. The installation time is greatly shortened through the convenient operation process, the construction efficiency is improved, and the labor cost and the labor intensity are reduced.

The invention discloses a phase-change heat storage system of a middle-deep layer geothermal system and a cascade heating method of the phase-change heat storage system, and belongs to the technical field of coupling utilization of middle-deep layer geothermal energy and solar energy, in a device, a solar heat collection unit is connected with a middle-deep layer geothermal heat exchanger, and the middle-deep layer geothermal heat exchanger is buried underground; the middle-deep layer geothermal heat exchanger comprises a shallow layer section and a deep layer section, the shallow layer section is sleeved with the annular sleeve type phase change heat storage layer, the shallow layer section is filled with phase change materials, and the phase change materials are used for conducting heat buffering and heat efficient low-temperature-difference storage in the heat exchange process. The circulating control system is respectively connected with the solar heat collection unit, the middle-deep layer geothermal heat exchanger and the annular sleeve type phase change heat storage layer; the circulation control system is used for controlling flowing and temperature adjustment of a medium in the system. The cascade coupling of solar energy and medium-deep geothermal energy can be effectively realized, the thermal stability and the energy storage and utilization efficiency of the system are improved, and the cascade coupling system can be suitable for a park multi-energy complementary heat supply system.

The utility model provides a solar heat storage and supply system. The solar heat storage and supply system comprises a solar heat collector, a heat storage heat exchanger, a heat storage water tank, an auxiliary heat supply device and a large-temperature-difference heat exchange unit. The solar heat collector is connected with one end of the heat storage heat exchanger through a pipeline; the other end of the heat storage heat exchanger is connected with the heat storage water tank through a pipeline; the heat storage water tank is connected with one end of the large-temperature-difference heat exchange unit through a pipeline, and the other end of the large-temperature-difference heat exchange unit is connected with a heating water pipe. And the auxiliary heat supply device is connected between the large-temperature-difference heat exchange unit and the heat storage water tank and on a water inlet pipeline corresponding to the large-temperature-difference heat exchange unit.

The application discloses an air conditioning system, comprising: a compressor; a first temperature detecting element for detecting the oil pool temperature of the compressor; a solar power generation module for converting solar energy into electric energy and storing; a solar heat storage module for converting solar energy into heat energy and storing; a control module configured to control the preheating state of the oil pool by the solar power generation module and the solar heat storage module respectively according to the oil pool temperature before the compressor starts. The air conditioning system of the application improves the solar energy utilization rate by setting the solar power generation module and the solar heat storage module, greatly prolonging the preheating time. The solar power generation module or the solar heat storage module is selected for preheating according to the compressor oil pool temperature, fully utilizing the advantages of high heat conversion rate and fast heating speed of the solar power generation module and the advantages of large energy storage and long heating duration of the solar heat storage module.

A solar heat powerplant comprising: a first heat reservoir which is a cold reservoir (3), a second heat reservoir which is a hot reservoir (1), at least one heat exchanger (5) adapted for radiative dry cooling of the cold reservoir (3) and / or for radiative heating of the hot reservoir (1) by absorbing solar irradiation, and a power generator (8) which operates by extracting heat from the hot reservoir (1) and transferring residual heat into the cold reservoir (3).

A kind of multi-energy complementary vacuum membrane distillation wastewater treatment system and method, belong to energy-saving and environmental protection field.The system includes solar heat collector, middle-deep layer geothermal well, vapor compression heat pump, vacuum membrane assembly, circulating pump, heat exchanger, vacuum pump and other equipment.Its characterized in that: with liquid water as working substance, first sequentially through the middle-deep layer geothermal well group buried in underground 1500m below, vacuum membrane distillation secondary steam, vapor compression heat pump and solar heat collection system gradually improve heat, then through heat exchanger heat transfer to the industrial wastewater to be treated, so that it reaches the required temperature, using circulating pump to fill vacuum membrane assembly, under negative pressure environment, through vacuum membrane distillation process purification separation, the produced secondary steam passes through heat exchanger and transfers sensible heat and latent heat to liquid working substance water to condense and collect, the produced concentrated liquid returns to water tank to continue circulating concentration, after reaching the required concentration, recycling.The invention maximizes the recycling of geothermal energy, solar energy and secondary steam heat energy, meets the energy demand in the process of vacuum membrane distillation wastewater treatment through multi-energy complementation, has the advantages of high energy utilization efficiency, low operating cost, strong operating stability, etc., suitable for industrial heating, building heating, ventilation and air conditioning and other fields.

The application discloses a solar multistage latent heat recovery type sludge drying system and method, and relates to the technical field of sludge drying, in particular to the solar multistage latent heat recovery type sludge drying system and method. The system comprises a solar light condensing device, a solar heat storage device and a sludge drying device. The sludge drying device comprises multiple sludge drying spaces and multiple steam flow spaces. The sludge drying spaces and the steam flow spaces are sequentially and spacedly arranged from top to bottom. The steam flow space is separated from the sludge drying space above the steam flow space by a supporting purification layer. The steam flow space is separated from the sludge drying space below the steam flow space by a hydrophilic heat conduction layer and a hydrophobic heat conduction layer. A sunlight absorption layer and a transparent heat insulation layer are sequentially arranged above the uppermost sludge drying space. The application can improve the solar energy utilization efficiency of the system, reduce energy consumption and environmental impact, and solve the problems of high energy consumption, complex operation, low solar drying technology efficiency, secondary pollution and large occupied area in the sludge drying process.