618 results about "Heat carrier" patented technology

Embodiments of systems and methods for converting thermal energy to electrical power are disclosed. In embodiments, a system for converting thermal energy to electrical power may include a thermal cycle device. The thermal cycle device may include an evaporator including a first fluid path for a flow of heated fluid and a second fluid path for a flow of a working fluid and configured to indirectly transfer heat from the flow of heated fluid to the flow of working fluid, a condenser to cool the working fluid, a pump to transport working fluid from the condenser, an expander to generate electrical power via the working fluid, and a loop for the flow of the working fluid. The system may include an amount of heat carrier injected into the loop and configured to adsorb and desorb the working fluid and generate additional heat to increase output of electrical power.

A thermal management arrangement for vehicles includes a refrigerant circuit having a chiller function and / or heat pump function and a heat carrier network for cooling and / or heating components of the vehicle. The heat carrier network has a heat carrier reservoir and a plurality of heat carrier supply segments fed from the heat carrier reservoir. A separately controlled and regulated ambient heat exchanger supply segment implements a circuit having a central low-temperature ambient heat exchanger and least one heat carrier reservoir.

The invention provides a preparation system and method of porous electrode carbon. The system mainly comprises a two-section temperature-variable carbonization fluidized bed and an activation fluidized bed. According to the method, small-particle-size polymer particles are softened in the carbonization process and bonded with a large number of heat carrier particles to form composite particles, so that self bonding and excessive growth are avoided, and controllable carbonization is achieved in the two-section temperature-changing carbonization fluidized bed; and introducing the composite particles into an activation fluidized bed, carrying out high-temperature activation, and removing the heat carrier to obtain the porous carbon electrode carbon particles. According to the method, adhesion of polymer particles during carbonization is avoided, the problem of instability of superfine particle fluidization operation is solved, the links of grinding and heating and cooling are reduced, and the method has the advantages of being low in cost and capable of being continuously operated.

The invention provides an energy storage coupling heat pump heat supply system and a heat supply method. The system comprises a heat pump device, an energy storage device and a control module. The heat pump device heats the heat carrier to a first temperature, and the energy storage device further heats the heat carrier to a second temperature for heat supply. The control module dynamically regulates and controls operation of the heat pump device and the energy storage device according to the heat supply demand quantity and the external heat source state, the heat pump device and the energy storage device are preferentially operated in the off-peak electricity period to complete heat storage, and first enthalpy increment provided by the heat pump device and second enthalpy increment released by the energy storage device are dynamically distributed in the heat supply period. And diversified thermal load requirements are met. The system supports real-time adjustment of power distribution, preheating optimization and waste heat utilization, and has the characteristics of high efficiency, flexibility and energy conservation.

The invention provides a rapid waste plastic pyrolysis-catalysis device and a test method, and belongs to the field of waste plastic utilization. The problems that a traditional waste plastic pyrolysis-catalytic reaction device is uneven in heating and low in pyrolysis rate in the pyrolysis process are solved. A rapid pyrolysis-catalytic reaction device for waste plastics comprises a pyrolysis device, a catalytic reaction device and a catalytic reaction device, the pyrolysis device comprises a pyrolysis container, a heat-carrying medium and a heating device, the heat-carrying medium is filled in the pyrolysis container and is in a liquid state at a high temperature, and the heating device is arranged on the wall of the pyrolysis container; the catalytic cracking device comprises a reducer pipe, an electromagnetic induction heating device and a catalytic reaction core, the catalytic reaction core is arranged on the upper half section of the reducer pipe, and a coil of the electromagnetic induction heating device is arranged outside the catalytic reaction core. The device is mainly used for pyrolyzing plastics.

The invention belongs to the technical field of petrochemical engineering, and particularly relates to a thermal auxiliary material for promoting alkane dehydrogenation reaction efficiency and a preparation method and application thereof. The auxiliary material is composed of a heating main body, a heat storage carrier, a stabilizing auxiliary agent and a carrier auxiliary agent. Wherein the component of the heating main body is CuO; the component of the heat storage carrier is CaO-Al2O3 composite oxide; the stabilizing auxiliary agent is one or more of Cr2O3, La2O3, CeO2 and ZrO2; and the carrier auxiliary agent is one or more of MgO, BaO, NiO and Fe2O3. The thermal auxiliary material with high mechanical strength, high heat transfer performance and high stability is synthesized through the steps of coprecipitation reaction, high-temperature hydrothermal reaction, high-temperature calcination, vacuum impregnation, ultrasonic oscillation and the like; when the material is applied to an alkane dehydrogenation olefin preparation device, alkane conversion rate and olefin selectivity can be improved, the service life of a catalyst can be prolonged, and energy consumption of the device can be reduced.

A thermocarrier box includes an outer shell and insulated panels coupled to a bottom wall of the outer shell and to side walls of the outer shell. The thermocarrier box includes an inner box positioned within the outer shell such that a bottom wall of the inner box and side walls of the inner box are each coupled to one of the insulated panels. Another insulated panel is positioned over the inner box. A lid is positioned over the another insulated panel such that the another insulated panel is positioned between the lid and the inner box. Methods of assembly are provided.

Retrofit kit (1) for an existing central heating system (2), wherein the central heating system (2) comprises at least one primary heat source (3) operable by means of fuels, in particular a boiler and / or a gas boiler, at least one heat exchanger (4), preferably a radiator for heating a building, and at least one domestic hot water storage tank (5), wherein a heat transfer fluid (6), in particular water, can be heated by means of the primary heat source (3), wherein the heat transfer fluid (6) can be conveyed to and / or through the heat exchanger (4) by means of a heat pump (7), and wherein the heat transfer fluid (6) can be conveyed to the domestic hot water storage tank (5) for heating domestic hot water (9) temporarily stored in the domestic hot water storage tank (5), namely for heat transfer from the heat transfer fluid (6) to the domestic hot water (9) through or adjacent to the domestic hot water storage tank (5),wherein the primary heat source (3) has a central heating control and / or regulation device (10) for its control and / or regulation, wherein the retrofit kit (1) and / or the central heating system (2) has at least one electrically operated heat pump (11), wherein the heat transfer fluid (6) can be heated by means of the heat pump (11), wherein the heat transfer fluid (6) can be conveyed to and / or through the heat pump (11) for its heating, and wherein the heat transfer fluid (6) can be conveyed to and / or through the primary heat source (3) by means of the heating pump (7) and / or the storage pump (8), characterized in that the retrofit kit (1) has a temperature sensor (13.1) and a separate heat pump control and / or regulation device (14) for the heat pump (11), wherein the temperature sensor (13.1) is connected to the separate heat pump control and / or regulation device (14) for control / is connected or connectable via signal and / or data technology,wherein the heat pump (11) is connected and / or connectable to the separate heat pump control and / or regulation device (14) for control purposes, wherein the separate heat pump control and / or regulation device (14) is designed and / or implemented such that the heat pump (11) is controlled based on the actual domestic hot water temperature (T) measured by means of the temperature sensor (13.1) in a lower area of ​​the domestic hot water storage tank (5) or adjacent to this lower area of ​​the domestic hot water storage tank (5). B1 ) is controllable and / or adjustable, wherein the temperature sensor (13.1) is used as a first temperature sensor (13.1) for determining a first actual domestic hot water temperature (T B1 ) is implemented, wherein a second temperature sensor (13.2) is located in a vertically viewed middle or upper area of ​​the domestic hot water storage tank (5) for measuring and / or determining a second actual domestic hot water temperature (T B2) is arranged, wherein the second temperature sensor (13.2) is connected to the central heating control and / or regulating device (10) in a control / signal / and / or data-related manner, wherein the central heating control and / or regulating device (10) is designed and / or implemented such that the primary heat source (3) is adjusted depending on the second actual domestic hot water temperature (T B2 ) is controllable and / or adjustable, wherein the separate heat pump control and / or regulation device (14) is designed and / or implemented such that the heat pump (11) can be operated and / or activated for heating the heat transfer fluid (6) with the aid of the separate heat pump control and / or regulation device (14) when the first actual domestic hot water temperature (T) measured, determined and / or calculated with the aid of the first temperature sensor (13.1) B1 ) a first limiting temperature (T B1G ) falls below.

According to the waste plastic double-heat-carrier circulating rapid pyrolysis fuel oil preparation device provided by the invention, a waste plastic crusher is communicated with the top of a downward pyrolysis reactor through a controllable feeder, and the upper part of the downward pyrolysis reactor is respectively communicated with a pyrolysis dry gas heat exchanger and a primary solid heat carrier return feeder; the bottom of the downward pyrolysis reactor is connected to the top of the moving bed reactor; the top of the moving bed reactor is communicated with the fractionating tower; the bottom of the moving bed is communicated with the lifting pipe heating regenerator through a to-be-generated heat carrier return feeder; a gas distributor, an ash discharge pipe and a gas inlet pipe are arranged at the bottom of the riser heating regenerator, and a first-stage gas-solid separator and a second-stage gas-solid separator are arranged at the top of the riser heating regenerator; a gas outlet of the second-stage gas-solid separator is provided with a pyrolysis dry gas heat exchanger and a waste heat boiler; a wax oil outlet, a diesel oil outlet and a gasoline outlet are formed in the bottom and the upper part of the fractionating tower, one path of tower top dry gas is connected with a water-cooling feeding pipe, the other path of tower top dry gas is communicated with a pyrolysis dry gas heat exchanger and a high-temperature gas hot melting section, and residual dry gas is delivered as a product.

The present invention discloses a system and method for preventing and controlling frost heave damage in railway subgrades adapted to severe cold climates. This system belongs to the field of seasonal frozen soil engineering technology. The prevention and control system includes several ground-source heat pump devices consisting of heating units, heating pipes, heat collecting pipes, and a detection assembly. Several heating units are arranged at the foot of the subgrade slope along the length of the railway. The heating pipes are laid in the frost heave development layer of the subgrade, and the heat collecting pipes are installed in the stable layers of the foundation on both sides of the subgrade. A heat carrier circulates through the pipeline consisting of the heating pipes, heating units, and heat collecting pipes. Temperature sensors, pressure sensors, and displacement sensors are used to monitor the subgrade freezing temperature, heat carrier temperature, compressor intake and exhaust pressures, and track deformation, respectively. A control assembly receives signals from the detection assembly and controls the operating mode of the heating units. The present invention ensures rapid compressor superheat establishment during startup in severe cold environments and rationally controls the compressor exhaust temperature range and operating mode during normal operation.

The invention discloses a railway roadbed frost heaving disease prevention and control system and method adapting to severe cold climate, and belongs to the technical field of seasonal frozen soil engineering.The prevention and control system comprises a plurality of ground source heat pump devices composed of heating units, heat supply pipes, heat collection pipes and detection assemblies, and the heating units are arranged at the slope toe position of a roadbed in the length direction of a railway; the heat supply pipe is laid on a frost heaving development layer of a roadbed, the heat collecting pipes are arranged on stable layers of the roadbed on the two sides of the roadbed, and the heat-carrying agent circularly flows in a pipeline composed of the heat supply pipe, the heating unit and the heat collecting pipes. A temperature sensor, a pressure sensor and a displacement sensor are used for monitoring the roadbed freezing temperature, the heat-carrying agent temperature, the suction and exhaust pressure of a compressor and the deformation amount of a track; and the control assembly receives a signal of the detection assembly and controls the operation mode of the heating unit. According to the method, rapid establishment of the superheat degree of the compressor in the starting stage in the severe cold environment and reasonable control over the exhaust temperature range and the operation mode of the compressor in the normal operation stage can be guaranteed.

The utility model belongs to the technical field of coal in-situ pyrolysis, and particularly discloses a mixed heat carrier generator for coal in-situ pyrolysis. Comprising an inner wall, the upper portion of the inner wall is a cylinder, the lower portion of the inner wall is a hollow cone, a cover body is arranged in the top of the inner wall, a plurality of nozzles are arranged on the lower surface of the cover body, an ignition device is arranged below the cover body, and a plurality of through holes are formed in the hollow cone. Fuel is injected into the inner wall through the nozzle, a combustion reaction is triggered through the ignition device to generate a mixed heat carrier, the mixed heat carrier enters a coal seam through the through holes for in-situ pyrolysis, the coal seam pyrolysis device is directly installed in the coal seam during use, the heat carrier does not need to be transported, the cost is lower, and the energy utilization rate is higher.

The invention discloses a high-temperature stable gas heat conduction temperature control method and system, and relates to the technical field of temperature control. The system comprises a high-temperature inert gas loop, a gas circulation driving module, a gas heating module, a gas heat exchange module, a gas cooling module, a gas purification and supplement module and a precise temperature sensing and control module. The high-temperature inert gas loop is configured as a closed circulation path and is used for bearing high-purity inert gas as a heat carrier; and the gas circulation driving module is arranged in the high-temperature inert gas loop and is used for driving the high-purity inert gas to continuously and circularly flow in the closed circulation path. By adopting high-purity inert gas as a heat-conducting medium and combining precise circulation driving, multi-stage heating, efficient heat exchange, active cooling, online purification and intelligent control technologies, the problems that an existing liquid heat-conducting medium is unstable in phase change at a high temperature, a metal eutectic medium is poor in safety, and a composite system is high in complexity are solved.

The invention discloses a process method and device for improving heat stability through gas pressurization of an organic heat carrier heat supply system, and relates to the technical field of heat conduction oil systems, the device comprises an expansion tank, the bottom end of the expansion tank is fixedly connected with a heat conduction oil pipeline, a mounting frame is arranged on one side of the expansion tank, and the device further comprises a nitrogen tank, a gas inlet mechanism and an exhaust mechanism. By arranging the air inlet mechanism, the hydraulic cylinder operates to drive the partition plate to move, and the partition plate moves downwards to reduce the space in the expansion tank, so that the air pressure in the expansion tank is increased, and the condition of negative pressure is avoided; meanwhile, when the partition plate moves downwards, the second air inlet pipe is automatically opened, nitrogen in the nitrogen tank can enter the expansion tank through the second air inlet pipe, and the air pressure in the expansion tank is increased in the mode that the space in the expansion tank is reduced through the displacement of the partition plate; and the speed of supplementing gas in the expansion tank is increased, so that the negative pressure working condition in the expansion tank is avoided.

The invention belongs to the field of pollutant control, and particularly discloses a low-temperature condensation coupling adsorption condensable particulate matter efficient removal system and method.The system comprises a low-temperature condensation unit and a heat-carrying adsorption unit, the adsorption device is used for adsorbing condensable particulate matters in the to-be-treated flue gas to form a liquid condensate; the heat-carrying adsorption unit comprises an adsorption chamber as well as an induced draft fan, a heat carrier and an adsorbent layer which are sequentially arranged in the adsorption chamber from bottom to top, and a flue gas inlet of the adsorption chamber is formed between the induced draft fan and the heat carrier and is used for feeding the condensed flue gas into the adsorption chamber and enabling the flue gas to flow upwards under the driving of the induced draft fan; after being heated by the heat carrier, the flue gas is conveyed to the adsorbent layer, so that the condensable particulate matter precursor in the heated flue gas is adsorbed by using an adsorbent. According to the application, comprehensive removal of the condensable particulate matters can be realized by utilizing low-temperature condensation coupling adsorption, so that the emission control effect of the condensable particulate matters is further improved.

The invention belongs to the technical field of pyrolysis devices, and particularly relates to an internal and external heat integrated rotary pyrolysis device with an internal material returning mechanism. The device comprises a supporting device, a cracking inner cylinder, a transmission device, a kiln tail cover, a spiral feeding device used for conveying materials and an external flue used for introducing flue gas, the cracking inner cylinder is rotationally connected to the supporting device, the output end of the transmission device is connected with the cracking inner cylinder, the external flue sleeves the cracking inner cylinder, and the outer flue is connected with the transmission device. The outlet end of the spiral feeding device is rotationally connected with one end of the cracking inner cylinder, and the other end of the cracking inner cylinder is rotationally connected with the kiln tail cover; the cracking inner cylinder is obliquely arranged, a drum screen is arranged on the section, extending into the kiln tail cover, of the cracking inner cylinder, a heat carrier is filled in the cracking inner cylinder, and a material returning spiral for returning the heat carrier is arranged on the inner wall of the cracking inner cylinder. The invention provides an internal and external heat integrated rotary pyrolysis device which utilizes an internal circulation heat carrier to strengthen a heat and mass transfer process and assists in removing coke in a furnace.

The invention relates to a multi-source heat carrier heat transfer coal pyrolysis reaction device, and relates to the technical field of multi-heat source complementary coal pyrolysis and gasification. Comprising a reactor, a spiral feeder, a solid product collector and a heat storage cavity, the interior of the reactor is divided into a pyrolysis cavity and a heat supply cavity through a steel plate; the spiral feeder is connected with the top of the pyrolysis cavity through a conveying pipe, and the solid product collector is connected with the bottom of the pyrolysis cavity through a pneumatic knife gate valve; and the pyrolysis cavity is connected with the bottom of the heat storage cavity through a pneumatic knife gate valve. The function that the reactor adapts to multi-source heat sources and high heat transfer flux is achieved through circular flowing of the high-temperature heat carrier; the heat transfer efficiency of the reactor can be effectively improved by regulating and controlling the heat transfer characteristic and the flowing state of the high-temperature heat carrier, and the pyrolytic reaction rate is increased.

The invention relates to a heat pipe type fluidized bed particle heat storage system which is mainly used for solar heat utilization. The system mainly comprises a light gathering device, a heat collecting pipe and a fluidized bed. The heat collection pipe adopts a sealed vertical heat exchange pipe bundle, is divided into a heat absorption section, a heat insulation section and a heat release section, and is filled with a phase change medium to efficiently store heat and transfer heat. Heat carrier particles are contained in the fluidized bed and are in direct contact with the heat release section of the heat collecting pipe for rapid heat exchange, the fluidized bed technology is used for achieving the advantages of being rapid in heat transfer, uniform in heat distribution, large in operation flexibility and the like, and different illumination intensity conditions can be adapted. The system is compact in overall design and small in heat loss, has efficient and stable heat utilization performance, and can be widely applied to the fields of solar thermal power generation, solar thermochemistry and the like.

This ensures that even in the case of particularly low outside temperatures or when heating is started, a demand for a rapid increase in the interior temperature is met, and efficient heat exchange is achieved even when using a refrigerant circuit with a low critical temperature. A vehicle air conditioning device is provided, comprising a refrigerant circuit, a heat transfer circuit in which a heat transfer fluid circulates and whose temperature is regulated by the refrigerant circuit, and a vehicle air conditioning unit in which several heat exchangers are arranged in an airflow duct through which a heat transfer fluid flows, and which blows the temperature-regulated air into a passenger compartment. The refrigerant circuit includes a first refrigerant-heat transfer fluid heat exchanger and a second refrigerant-heat transfer fluid heat exchanger.which are provided sequentially in a refrigerant circulation direction and transfer the heat of the refrigerant to the heat transfer medium, wherein the heat transfer medium circuit comprises a flow path switching unit that switches between a flow path in which the heat transfer medium, which has passed through at least one of the first refrigerant-heat transfer medium heat exchanger or the second refrigerant-heat transfer medium heat exchanger, flows into at least one of the several heat exchangers, and a flow path in which the heat transfer medium, which has passed through both the first refrigerant-heat transfer medium heat exchanger and the second refrigerant-heat transfer medium heat exchanger, flows into the several heat exchangers.

The present invention discloses an all-season hot rod device and a method for maintaining the stability of permafrost, which belongs to the technical field of permafrost protection. The all-season hot rod device includes a hot rod unit and a refrigeration unit. The hot rod unit is divided into a condensation section, an insulation section and an evaporation section from top to bottom. The condensation section is placed above the ground surface, the insulation section is placed in the seasonal active layer of the frozen soil, and the evaporation section is placed in the permafrost layer. The gaseous heat carrier at the bottom of the evaporation section is ejected into the upper condensation section by an ejector in the insulation section; the refrigeration unit is placed on the top of the condensation section, which can absorb the heat of the condensation section and release it into the atmosphere; the operation of the hot rod unit and the refrigeration unit is controlled according to the permafrost temperature. The present invention combines the hot rod unit with the refrigeration unit to continuously deliver cold to the permafrost throughout the year, and maintain the thermal stability of the permafrost project; at the same time, it has the advantages of zero energy consumption, efficient heat transfer, convenient transportation and convenient installation, reliable operation, and can achieve the dual goals of permafrost protection and energy saving and efficiency improvement.

The application discloses a device and method for preparing green hydrogen through biomass pyrolysis and gasification, relates to the technical field of green hydrogen preparation, and solves the problems of blockage and corrosion caused by ash melting and slagging in the pure oxygen gasification process, and the problem of low energy utilization rate. The device for preparing green hydrogen through biomass pyrolysis and gasification comprises a pyrolysis reaction device, and the pyrolysis reaction device comprises a pyrolysis reaction tank connected with a high-temperature heat carrier conveying spiral, a biomass raw material storage bin, a biomass raw material conveying spiral and a pyrolysis solid-phase product conveying spiral. In the application, biomass raw materials are converted into biochar and pyrolysis oil gas through pyrolysis technology, the biomass ash is effectively cut, and problems such as blockage and corrosion caused by ash melting and slagging in the pure oxygen gasification process are effectively avoided; the high-temperature pyrolysis oil gas is directly subjected to pure oxygen gasification reaction through gasification technology, the sensible heat and latent heat in the pyrolysis oil gas are fully utilized, and the energy utilization rate is high.

The invention relates to the technical field of organic Rankine cycle power generation, and discloses a test device, a test system and a test method. The test system comprises an organic Rankine cycle power generation device and a test device. A heat source device of the test device is used for circularly outputting a heat carrier to an organic Rankine cycle power generation device, a cold source device is used for circularly outputting a cooling medium to the organic Rankine cycle power generation device, and the organic Rankine cycle power generation device is used for outputting electric energy to a load device. By means of the mode, the heat source temperature range and the working medium type of the organic Rankine cycle power generation device matched with the test system can be widened, and the test system can be conveniently matched with the organic Rankine cycle power generation device with a larger scale.

The invention discloses a chemical looping combustion material circulation method and chemical looping combustion equipment. The chemical looping combustion material circulation method comprises the steps that heat carrier particles and oxygen carrier particles are mixed in an air reactor, the oxygen carrier particles and oxidizing airflow are subjected to an oxidation reaction and release heat, and the heat carrier particles absorb the heat by making contact with the oxygen carrier particles; the flow speed of the oxidizing gas flow is adjusted, heat carrier particles are selectively separated out by means of the difference of the fluidization characteristics of the heat carrier particles and oxygen carrier particles, and the separated oxygen carrier particles are conveyed to a fuel reactor; heat is extracted from the separated heat carrier particles, and then the heat carrier particles are discharged or flow back to the air reactor. The invention relates to a chemical looping combustion technology, and provides a chemical looping combustion material circulation method and chemical looping combustion equipment, heat carrier particles are introduced, the heat carrier particles absorb heat released by oxidation of oxygen carrier particles and transmit the heat to a heating surface of a heat recovery structure, and effective extraction of heat in the chemical looping combustion process is achieved.

The application provides a kind of waste plastics fast pyrolysis-catalytic device and test method, belong to waste plastics utilization field.The uneven heating in the pyrolysis process, the problem of slow pyrolysis rate of traditional waste plastics pyrolysis-catalytic reaction device is solved.A kind of waste plastics fast pyrolysis-catalytic reaction device, comprising: pyrolysis device, including pyrolysis container, heat carrier medium and heating device, the heat carrier medium is filled in pyrolysis container and is liquid at high temperature, the heating device is equipped on the wall of pyrolysis container;Catalytic cracking device, including reducing pipe, electromagnetic induction heating device and catalytic reaction core, the catalytic reaction core is arranged in the upper half of reducing pipe, the coil of electromagnetic induction heating device is arranged outside the catalytic reaction core.It is mainly used for pyrolysis plastics.

The invention discloses a method for producing hydrogen by using organic solid waste, and relates to the technical field of new energy. The method comprises the following steps: classifying the organic solid wastes, screening out organic matters and combustible substances, mixing the organic matters and the combustible substances, and crushing into a homogeneous material with the particle size of less than or equal to 50mm; drying the homogenized material to obtain a dried material of which the water content is less than or equal to 8%; feeding the dried material into a rotary kiln pyrolyzing furnace, mixing the dried material with a heat carrier in the rotary kiln pyrolyzing furnace, heating the dried material by flue gas through the cylinder wall of the rotary kiln pyrolyzing furnace and the heat carrier, and pyrolyzing the dried material at the pyrolyzing temperature of 450-750 DEG C to obtain oil gas and pyrolyzing slag; mixing the pyrolysis residues with a cosolvent, preparing a glass body in a gasification melting furnace, mixing oil gas with water vapor, and reacting in a fixed bed reactor to prepare synthesis gas; and preparing the synthesis gas into hydrogen. The pyrolysis efficiency is remarkably improved, fuel consumption is reduced, system energy consumption is correspondingly reduced, and low-temperature efficient pyrolysis is achieved.

The present invention relates to a ground collector system as a basis for a local heating network with heat pumps and a method for utilizing the temperature of the ground. Conventional ground collectors are installed at shallow depths, and the underlying soil must first be excavated. The invention proposes a ground collector system for the deep working levels of opencast mines, with the pipes (2) of a heat transfer medium circuit being laid on working and dumping levels exposed for raw material extraction in the opencast mine. The invention allows areas affected by open-cast mining to be reused in an ecologically and economically viable manner.

The utility model relates to the field of oilfield development, in particular to a double-hollow sucker rod heating device which comprises a heating tank, a sucker rod assembly, a stirring assembly, a heating assembly, a flow guide pipe, a threaded sleeve, a feeding hopper, a first hydraulic controller and a liquid discharging pipe. The heat conduction layer and the heat preservation and insulation layer are arranged in the inner pipe and the outer pipe of the sucker rod respectively, heat transfer between a heat carrier and the sucker rod can be enhanced through the heat conduction layer, it is ensured that heat can be efficiently transferred to the underground, heat loss of the heat carrier in the flowing process can be reduced through cooperation of the heat preservation and insulation layer, and the service life of the sucker rod is prolonged. The heating assembly capable of sensing the temperature of the heating carrier in the heating device in real time is arranged, and the heating temperature can be flexibly adjusted according to the actual temperature change of the heat carrier liquid to achieve rapid temperature rise of the heat carrier liquid; and the stirring assembly is arranged, so that the heat carrier liquid flowing back into the heating device can be quickly and uniformly stirred in a rotary stirring mode to accelerate temperature rise.

The invention relates to a local magnetothermal coupling biological rotating disc enhanced cold region sewage treatment method and system. The system comprises a reactor, a biological rotating disc for growing a biological membrane, a magnetic heat carrier, an alternating magnetic field generator and a motor for driving the biological rotating disc to rotate, the reactor comprises an air exposure area and a sewage area from top to bottom, a water inlet is formed in the lower part of the left side wall of the reactor, a water outlet flush with the water level of the sewage area is formed in the upper part of the right side wall, the reactor is further provided with vent holes, and the air exposure area is communicated with air through the vent holes; the biological rotating disc is partially immersed in the sewage area and partially exposed to the air exposure area in the radial direction; the air exposure area is located in the magnetic field action range of the alternating magnetic field generator, the magnetic heat carrier is arranged on at least one side of the biological rotating disc, and the magnetic heat carrier generates a magnetocaloric effect under the action of the magnetic field so as to increase the temperature of the biological membrane. According to the invention, the synergistic effect of precise heating of the biological membrane and the metabolic process of the biological membrane is realized, and the efficient and energy-saving sewage denitrification process at low temperature is realized.

The invention provides a phase change heat storage system and method based on two-phase contact heat exchange, and relates to the technical field of heat energy storage. The system comprises a high-temperature liquid storage tank, a low-temperature particle storage tank, a heat-carrying liquid loop, a connecting pipeline and a switching valve, a heat exchange pipeline, a liquid-carrying heat pump, a heater / radiator and a separator are arranged on the heat-carrying liquid loop to form a complete loop, the high-temperature liquid storage tank is connected to the heat exchange pipeline, and the low-temperature particle storage tank is connected with the heat exchange pipeline and the separator. During heat storage, the low-temperature particles and the high-temperature heat-carrying liquid are in direct contact for heat exchange in the heat exchange pipeline, and the particles are melted into liquid and then stored in the high-temperature liquid storage tank; during heat release, high-temperature liquid is granulated into liquid drops through the nozzle, the liquid drops make direct contact with low-temperature heat-carrying liquid in the heat exchange pipeline for heat exchange, and the liquid drops are solidified into particles and then stored in the low-temperature particle storage tank. Through liquid-liquid and liquid-solid two-phase direct contact heat exchange, the heat transfer efficiency is improved, the problems of complexity and cost caused by phase change material packaging are solved, and the heat storage device is suitable for large-scale heat storage application.

This utility model relates to a heat-insulating and heat-resistant ceramic tableware, belonging to the field of ceramic tableware technology. It includes a ceramic tableware body with an external heat-insulating structure. This heat-insulating structure includes a heat-insulating carrier slidably connected to the outside of the ceramic tableware body. This heat-insulating and heat-resistant ceramic tableware, by using a heat-insulating carrier, directly isolates the ceramic tableware body, preventing direct contact between the user and the tableware. Furthermore, the inclusion of a vacuum cavity creates a double-layer effect for the heat-insulating carrier, further enhancing the heat-insulating effect. Simultaneously, the inclusion of a heat-insulating pad prevents heat transfer to the table surface and provides a certain degree of anti-slip effect, thus achieving both heat insulation and heat preservation, slowing down the cooling rate of food inside the ceramic tableware.