11results about How to "Improve heat storage efficiency" patented technology

A fluctuating steam thermal storage and heat exchange device and method are disclosed. The device includes a tank, a heat exchanger, and a spraying device. The spraying device is located in the upper part of the tank, and the heat exchanger is located in the lower part of the tank. The bottom of the tank is connected to the spraying device via an upper pipe section through an upper circulation inlet, and to the middle of the tank via a lower pipe section through a lower circulation inlet. A circulating water pump is installed on the lifting pipe. A steam inlet is provided on the tank between the spraying device and the lower circulation inlet. This invention also provides a thermal storage and heat exchange method based on this fluctuating steam thermal storage and heat exchange device. This invention can solve the problem of recovering and utilizing intermittent polluted steam, and produces clean, high-temperature secondary water that can be used for power generation or winter heating.

The invention discloses a phase-change material household cold and warm temperature control system based on virtual power plant power transaction, and the system comprises a heat pump air conditioning module which is communicated with a phase-change material energy storage module through a heat exchange fluid conveying module; the heat exchange fluid conveying module is provided with a heat exchanger and a heat exchange circulating pipeline, the heat exchange circulating pipeline sequentially passes through the heat exchanger and the phase change material energy storage module, the intelligent control module comprises a communication interface and a microprocessor, and the communication interface is connected into the microprocessor. The microprocessor is used for receiving time-of-use electricity price information of at least 24 hours in the future sent by the virtual power plant platform through the communication interface; through interaction between the intelligent control module and the virtual power plant platform, the electricity price and excitation signals can be real-time, the energy storage / release time sequence can be optimized, the response speed of electricity price adjustment is improved, and the use energy consumption of the heat pump air conditioner module is effectively reduced; and through a closed-loop feedback mechanism, aggregation scheduling of the virtual power plant can be promoted, and the flexibility of the power grid is improved.

The utility model belongs to the technical field of heat mass energy storage, and discloses heat mass storage and release integrated energy storage equipment, which comprises a heat storage and release integrated tank, a heating U-shaped calandria and a heat exchange U-shaped calandria are alternately arranged in the heat storage and release integrated tank in a staggered manner, and the heating U-shaped calandria is used for heating heat mass fused salt or heat conduction oil stored in the tank. The utility model has the following beneficial effects: the steam turbine and the generator are integrated by adopting modularization, molten salt and heat conduction oil do not need to be pumped out for heat exchange and power generation, heat exchange is directly completed in the equipment, and the heat energy loss is reduced. And parts are reduced, and faults are reduced. And a plurality of modules of the storage and generation integrated tank can be combined according to the energy storage capacity. The method is not affected by sites and is low in overall construction investment cost.

The invention discloses a gradient heat conduction wood fiber composite wallboard and a preparation method thereof, and belongs to the technical field of composite wallboard preparation.According to the gradient heat conduction wood fiber composite wallboard and the preparation method thereof, wood fibers and reinforced fibers are smashed and mixed and then poured into an adhesive, the wood fibers and the reinforced fibers are bonded through the adhesive, and the gradient heat conduction wood fiber composite wallboard is obtained; the preparation method comprises the following steps: mixing and adhering wood fibers and reinforced fibers, pouring the mixed and adhered wood fibers and reinforced fibers into a mold, pressurizing and drying to prepare a base material layer of the gradient heat-conducting wood fiber composite wallboard, so that the base material layer has better crack resistance and mechanical strength, and mixing a paraffin-based phase change material and expanded graphite according to a certain proportion to prepare the gradient heat-conducting wood fiber composite wallboard. The paraffin-based phase-change material fully utilizes the embedded space structure of the expanded graphite with large and small particle sizes, so that the thermal diffusion coefficient after the paraffin-based phase-change material and the expanded graphite are mixed is improved, the heat conduction enhancement layer has the best performance in the aspects of heat transfer efficiency, heat stability, heat storage efficiency and the like, and the heat conduction efficiency of the wallboard is improved.

The application discloses a free telescopic and detachable phase change heat storage and exchange device, which comprises a shell, one end of the shell is a fluid inlet, the other end is a fluid outlet, a phase change module is arranged in the shell, the phase change module comprises a shell layer phase change module and an internal phase change module of the shell, the shell layer phase change module is arranged close to the inner wall of the shell, and the internal phase change module of the shell is arranged in the cavity of the shell layer phase change module. The device has the advantages of the tube-shell type and the plate type phase change heat exchanger, the heat storage and release rate is obviously higher than that of the existing plate type and tube-shell type phase change heat storage and exchange devices, and the problems of thermal expansion and cold contraction of the PCM module are effectively solved. The device has the advantages of high heat storage density, fast heat storage and release rate, compact structure, less heat loss, no expansion and cracking problems, no melting "dead zone", easy disassembly, installation and cleaning and the like. Compared with the prior art, the device has outstanding substantial characteristics and significant progress.

The application discloses a kind of RTO device assembly construction methods, and the risk of cross operation is reduced by specification process.Its core steps include: first, bottom air pipe, steel support and platform installation are carried out;Then hoist lifting valve, gas collecting chamber, heat storage chamber in turn;In heat storage chamber, fill heat storage ceramic according to the structure of "bottom ceramic square saddle ring, multilayer MLM honeycomb ceramic module, top square saddle ring";Hoist combustion chamber, burner again;Finally, install fan, air pipe and accessory structure.The air pipe welding adopts inside and outside mouthpiece fixed weld, effectively control gap and deformation.The method makes construction more standardized and efficient, reduces the risk of cross operation, improves the heat storage efficiency and is suitable for large RTO project.

The utility model discloses a supercritical heat storage top peak heat supply unit, including steam turbine system, steam heat storage system, heat network system and power grid system, steam turbine system includes the steam turbine and generator of cooperation, and steam heat storage system includes steam water heat exchanger and hot water heat storage jar, and heat network system includes first station, primary network heat supply pipe and heat user, and primary network heat supply pipe includes primary network backwater pipe and primary network water supply pipe, steam turbine passes through first station and connects primary network heat supply pipe, and primary network heat supply pipe is connected with heat user, and steam turbine passes through steam water heat exchanger and connects hot water heat storage jar, and hot water heat storage jar connects primary network heat supply pipe, sets up expansion water tank and water replenishing pump, and the water inlet of expansion water tank is connected with primary network backwater pipe, and the water outlet is connected with water replenishing pump inlet, and water replenishing pump outlet is connected with primary network water pipe, the utility model discloses the adjusting effect of expansion water tank can more effectively absorb and release heat, thereby improves the efficiency of heat storage, and reduces the operation pressure fluctuation of unit.

The invention discloses a heat storage device coupled with metal hydride and a photo-thermal power generation system, and relates to the technical field of energy storage. The heat storage device coupled with the metal hydride comprises a high-temperature fused salt storage tank and a hydrogen storage tank, the high-temperature fused salt storage tank is provided with a high-temperature fused salt input port and a high-temperature fused salt output port, a metal hydride storage tank is arranged in the high-temperature fused salt storage tank, the metal hydride storage tank is filled with the metal hydride, and the metal hydride storage tank is communicated with the hydrogen storage tank. The high-temperature fused salt heats the metal hydride in the metal hydride storage tank, so that the metal hydride is heated to release hydrogen and the hydrogen is stored in the hydrogen storage tank. And after the temperature of the fused salt is reduced, hydrogen in the hydrogen storage tank is released to the metal hydride storage tank, so that the dehydrogenation-state material absorbs the hydrogen and releases heat to heat the fused salt in the high-temperature fused salt storage tank, and heat storage and heat release are achieved. By combining the high heat storage density of the metal hydride and the good fluidity of the fused salt, the heat transfer performance and the heat storage efficiency of the heat storage device are improved.

This invention relates to a horizontally cascaded phase change heat storage device, belonging to the field of phase change energy storage and enhanced heat transfer. It comprises an outer shell, a first inner cavity, a second inner cavity, an inner tube, a heat transfer fluid, a first phase change material, separating ribs, and a second phase change material. The invention utilizes separating ribs located at the lower part of the inner tube to divide the annular space between the outer shell and the inner tube into upper and lower chambers. The volume of the lower chamber increases from the inlet to the outlet. The first phase change material filled in the upper part of the first cavity has a higher melting point, while the phase change material filled in the lower part has a lower melting point. The combination of the separating ribs and different phase change materials reduces the heat storage time and improves the heat storage efficiency. Compared with traditional phase change heat exchangers, the heat storage time of this invention can be reduced by approximately 70%.

The utility model discloses a flue type waste heat recycling device, which belongs to the field of waste heat recovery and comprises a flue connecting pipe, a switch component arranged at the right end of the flue connecting pipe, a dust backflow prevention component arranged at the right end of the switch component, and a filter component arranged at the right end of the dust backflow prevention component. According to the technical scheme, the heat storage device is characterized in that reverse protruding blocks which are distributed in a staggered mode are arranged in a conveying pipe, dust backflow is effectively prevented, the situation that dust flows back to block a flue connecting pipe is avoided, a large-hole filtering plate and a small-hole filtering plate are sequentially arranged in the filtering assembly in a matched mode, and the heat storage assemblies are arranged at the outer end of the filtering assembly in a matched mode. The waste heat is filtered in a classified mode; meanwhile, the contact area with the waste heat is increased through spiral heat conduction pieces in the heat storage assembly, meanwhile, a circulation loop is formed through a backflow pipe, the waste heat circulates in the device, the heat storage assembly can be independently taken down to be used at other places, and waste heat recycling is effectively achieved.

This application relates to the field of building insulation materials technology, specifically disclosing a method for preparing vitrified microcapsule insulation mortar based on phase change microcapsules. The method includes the following steps: dry mixing ZrO2 / ZnO / PDA multi-shell phase change microcapsules, phenolic resin foam-vitrified microsphere composite material, cement, cellulose ether, fly ash, polypropylene fiber, water-reducing agent, and redispersible latex powder for 25-30 seconds to obtain a preliminary mixture; adding water to the preliminary mixture and stirring for 60-90 seconds until homogeneous to obtain the vitrified microcapsule insulation mortar based on phase change microcapsules. The insulation mortar provided by this application exhibits excellent insulation performance and temperature regulation and energy storage capacity.