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30results about How to "Increase heat transfer power" patented technology

Double-well re-injection geothermal exploitation system based on fracturing technology

The invention discloses a double-well re-injection geothermal exploitation system based on a fracturing technology. The double-well re-injection geothermal exploitation system based on the fracturing technology comprises a first re-injection well, a second re-injection well and a water taking well arranged between the first re-injection well and the second re-injection well, wherein the water taking well is communicated with the first re-injection well and the second re-injection well through cracks in a heat storage layer respectively; the water taking well is connected with the heat release side inlet of a heat exchanger via a sand remover, the heat release side outlet of the heat exchanger is connected with the first re-injection well and the second re-injection well respectively, and the heat absorption side of the heat exchanger is communicated with the heating pipe network of a user. Because the water taking well is communicated with the first re-injection well and the second re-injection well by virtue of the cracks in the heat storage layer respectively, and the cracks are arranged in the heat storage layer, according to the double-well re-injection geothermal exploitation system based on the fracturing technology disclosed by the invention, geothermal tail water can be completely re-injected in the heat storage layer through the cracks to ensure the sustainable development of geothermal resources, thus reducing the adverse effects of the geothermal tail water on environment and ecology; meanwhile, when the geothermal tail water flows through the cracks, the heat exchange area of a fluid and the heat storage layer is greatly increased, and the heat exchange power is increased.
Owner:陕西圣昊朗道科技有限公司

Prefabricated block for frozen soil roadbed temperature reduction and frozen soil roadbed composite structure

ActiveCN109505208ASolve the key problems of control measuresSolve the problem that is difficult to combine stablyRoadwaysClimate change adaptationControl layerNatural convection
The invention relates to a prefabricated block for frozen soil roadbed temperature reduction and a frozen soil roadbed composite structure. The prefabricated block is of an integral structure, and comprises a ventilation passage (1) positioned at the upper part or the middle upper part and three convection heat exchange spaces respectively positioned at left and right lower sides and lower side ofthe ventilation passage (1). The prefabricated block uses the integral design; a plurality of prefabricated blocks are sequentially spliced; then, an integral ventilation passage of an embankment temperature regulation and control layer and an integral convection heat exchange space are formed by one step; convenience and high speed are realized; meanwhile, through the integral combination of theventilation passage and the convection heat exchange spaces, the composite temperature lowering effect of the forced convection of the ventilation pipe and the natural convection of the convection heat exchange space is reinforced, so that the one-way heat conduction effect of the temperature regulation and control layer is achieved to the maximum degree; the power and the temperature lowering effect of the heat exchange layer are exponentially improved; the engineering regulation and control effects are obviously improved; the frozen soil roadbed stability is greatly improved; meanwhile, thedifficult problem of frozen soil highway building is predominantly solved; the long-time safety and stability of the frozen soil engineering are ensured.
Owner:NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS

Modular efficient heat exchange structure

The invention relates to a modular efficient heat exchange structure. The modular efficient heat exchange structure comprises a plurality of radiator modules; each radiator module comprises a pipe bundle formed by arranging a plurality of three-dimensional deformation pipes in parallel; a radiator shell covers the outer side of the pipe bundle; an inlet water pipe is arranged at one end of the radiator shell; an outlet water pipe is arranged at the other end of the radiator shell; a communicating elbow is detachably connected between the inlet water pipe and the outlet water pipe of the adjacent radiator modules; the inlet water pipe and the outlet water pipe are respectively communicated with two ends of the pipe bundle; an air inlet is formed in the upper end surface of one end, far awayfrom the inlet water pipe, of the radiator shell; an air outlet is formed in one end, close to the inlet water pipe, of the radiator shell; and a draught fan with an air opening facing vertically anddownwards is installed at the air inlet. With the above technical schemes adopted, corresponding economic losses are reduced; heat exchange under different power requirement can be realized; heat transfer temperature difference is effectively increased, so that the heat exchange power of the equipment is increased; and equipment manufacturing materials can be saved.
Owner:GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI

Polyhedral spiral channel heat exchanger for liquid refrigeration

The invention discloses a polyhedral spiral channel heat exchanger for liquid refrigeration. The problems that a heat exchanger in the prior art is of a plate-type structure, large in size, small in heat energy exchange density and low in efficiency in the aspect of high-power refrigeration are solved. The polyhedral spiral channel heat exchanger for liquid refrigeration comprises a polyhedral cold block, a mandrel, connecting flanges and semiconductor chilling plates, wherein the polyhedral cold block is a prism with a polygonal section; an inner hole is formed in the axial direction of the center of the prism; a spiral groove for liquid to be refrigerated to circulate is formed in the wall of the inner hole; the connecting flanges are fixedly connected with two ends of the polyhedral cold block; the semiconductor chilling plates are installed on the side faces of the polyhedral cold block; the diameter of the mandrel is matched with the inner hole; and the mandrel is inserted into the inner hole to form a sealed spiral channel with the spiral groove. The polyhedral cold block is refrigerated together from all positions, so that the energy exchange density is improved, the size of the heat exchanger is reduced, and refrigeration is more uniform. Through the spiral channel, the flowing time of liquid is prolonged, and the heat exchange efficiency is improved.
Owner:HANGZHOU DAHE THERMO MAGNETICS CO LTD

Heat exchanger core and heat exchanger based on bionic stacking three-dimensional configuration

The invention discloses a heat exchanger core body based on bionic stacking three-dimensional configuration and a heat exchanger. The heat exchanger core body is formed by stacking a plurality of heatexchange units, each heat exchange unit comprises two layers of net-shaped plates, a plurality of grids are uniformly distributed on the opposite end faces of the net-shaped plate pieces, net rib nodes of the two layers of net-shaped plates are staggered with each other, and a plurality of flow passages and chambers communicating with each other are formed; and every two adjacent heat exchange units forms a cold side medium flow cavity and a hot side medium flow cavity. According to the heat exchanger core body, a plurality of micro cavities communicating with each other are formed in the medium flowing cavities to form a bionic bone marrow structure, and the bionic bone marrow structure has relatively large ratio surface area to volume, compared with a heat exchanger with an internal straight flow channel, the heat exchange power can be improved by 20% or more, and the weight of the heat exchanger is reduced by 20% or more; and the compactness of the heat exchanger is improved to be6 times or more of the compactness of a tube-shell heat exchanger, the heat exchanger can bear high pressure of about 20 MPa, has relatively high heat exchange efficiency under the condition that thehydraulic diameter is large, and is suitable for large heat flux density application scenes.
Owner:陕西益信伟创智能科技有限公司

A closed circulation heating system

A closed circulation heating system comprises a liquid storage tank and a circulation water tank communicated with the liquid storage tank. An electric heating pipe is arranged in the circulation water tank, the circulation water tank is communicated with a plurality of horizontal branched boreholes through a central main borehole, a heat insulating pipe going down from the central main borehole is arranged in each horizontal branched borehole, inlets of the heat insulating pipes are communicated with the horizontal branched boreholes, outlets of the heat insulating pipes are connected with a heat exchanger and then go back to the circulation water tank, and the heat exchanger and a heating pipe network of users form a circulation loop. Well drilling cost is lowered, heat exchange power is increased, pollution to strata during operating of the system is avoided, the closed circulation heating system belongs to an environmental-friendly system, and the problems of poor stability in system operating and relatively short equipment service life caused by adoption of geothermal water are solved. In addition, the closed circulation heating system is high in applicability, free of limitation of geographical positions and geothermal resources, capable of being established at any place and low in operating expense.
Owner:陕西圣昊朗道科技有限公司

A kind of embedded micro-pump driven heat dissipation structure and heat dissipation method

The embodiment of the invention discloses an embedded micro-pump driving type heat dissipation structure and a heat dissipation method, and relates to the technical field of heat dissipation devices.The key points of the technical scheme are that the structure comprises a heat dissipation shell, and a heat dissipation cavity is formed in the inner side of the heat dissipation shell; the heat dissipation cavity is filled with a heat dissipation working medium; an embedded micro-channel forced cooling module for continuously pumping out and inputting a heat dissipation working medium in the heat dissipation cavity is arranged at the outer side of the heat dissipation shell; and a thermoelectric conversion module for transferring heat at one side of the heat dissipation shell to the other side of the heat dissipation shell is arranged at the inner side of the heat dissipation cavity. The heat dissipation method comprises the following heat dissipation steps: S1, starting a micro-pump, wherein the internal heat dissipation working medium circularly flows to dissipate heat; S2, detecting the surface temperature of the to-be-cooled device, and selecting heat recycling or forced cooling.The problems that in the prior art, a common radiator is used for convection heat dissipation, the temperature of the surface of a chip is still very high, and the heat dissipation effect is poor aresolved.
Owner:PEKING UNIV

Stainless steel plate pre-embedded steel plate connection interface wall panel underground granary

Stainless steel plate pre-embedded steel plate connection interface clapboard underground granary, set a parapet interface on the inner surface of the granary, the parapet interface includes a steel plate connection interface and a stainless steel clapboard; the connection interface is continuous, and the clapboard is continuous with the welding interface Welding achieves a sealed connection with the welding interface, and there is a gap between two adjacent stainless steel parapets; or the connection interface is discontinuous, and the welding connection between the clapboard and the connection interface plays a fixed role and two adjacent stainless steel parapets The panel splicing connection includes welding connection, adhesive connection and undercut connection; the stainless steel wall panel and the inner surface of the structure form a closed space; the closed spaces are respectively communicated with negative pressure sources. Negative pressure vacuum also has the functions of drying, killing and slowing down the metabolism of grains. The energy consumption of underground cooling granaries in the Yangtze River Delta region is negligible in the first summer when the storage temperature does not exceed 8°C. Rice stocks are expected to be extended to eight years from the current two years.
Owner:济宁高新科达科技项目服务有限公司

A twin-well recharge geothermal development system based on fracturing technology

The invention discloses a double-well re-injection geothermal exploitation system based on a fracturing technology. The double-well re-injection geothermal exploitation system based on the fracturing technology comprises a first re-injection well, a second re-injection well and a water taking well arranged between the first re-injection well and the second re-injection well, wherein the water taking well is communicated with the first re-injection well and the second re-injection well through cracks in a heat storage layer respectively; the water taking well is connected with the heat release side inlet of a heat exchanger via a sand remover, the heat release side outlet of the heat exchanger is connected with the first re-injection well and the second re-injection well respectively, and the heat absorption side of the heat exchanger is communicated with the heating pipe network of a user. Because the water taking well is communicated with the first re-injection well and the second re-injection well by virtue of the cracks in the heat storage layer respectively, and the cracks are arranged in the heat storage layer, according to the double-well re-injection geothermal exploitation system based on the fracturing technology disclosed by the invention, geothermal tail water can be completely re-injected in the heat storage layer through the cracks to ensure the sustainable development of geothermal resources, thus reducing the adverse effects of the geothermal tail water on environment and ecology; meanwhile, when the geothermal tail water flows through the cracks, the heat exchange area of a fluid and the heat storage layer is greatly increased, and the heat exchange power is increased.
Owner:陕西圣昊朗道科技有限公司

High-efficiency compact heat exchanger with vertical cross microchannel

The invention discloses a high-efficiency and compact heat exchanger with vertical crossing microchannels, which comprises at least two flow plates stacked together, and the two adjacent flow plates are respectively an upper flow plate and a lower flow plate, and at least two fluid channels, the upper flow plate and the lower flow plate Heat exchange channels are arranged in the downstream plate, and the heat exchange channel of the upper plate includes at least one first-type flow channel, the first-type flow channel includes the inlet section of the first-type flow channel, the middle section of the first-type flow channel, The outlet section of the first type of flow channel, the heat exchange flow channel of the down flow plate includes at least one second type of flow channel, the second type of flow channel includes the inlet section of the second type of flow channel, the middle section of the second type of flow channel, the second type of flow channel The outlet section of the flow channel, the inlet section of the first type of flow channel communicates with the outlet section of the first type of flow channel through the middle section of the second type of flow channel, and the inlet section of the second type of flow channel connects with the second type of flow channel through the middle section of the first type of flow channel The exit section of the road is connected. Through the design of the inlet and outlet flow channels of the heat exchanger, part of the flow channels of the upper and lower boards is opened to achieve the purpose of realizing the three-dimensional fluid arrangement of the hot and cold runners in the printed circuit board.
Owner:NUCLEAR POWER INSTITUTE OF CHINA
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