31results about How to "Increase heat transfer" patented technology

Syngas production process and reforming exchanger. The process involves passing a first portion of hydrocarbon feed mixed with steam and oxidant through an autothermal catalytic steam reforming zone to form a first reformed gas of reduced hydrocarbon content, passing a second portion of the hydrocarbon feed mixed with steam through an endothermic catalytic steam reforming zone to form a second reformed gas of reduced hydrocarbon content, and mixing the first and second reformed gases and passing the resulting gas mixture through a heat exchange zone for cooling the gas mixture and thereby supplying heat to the endothermic catalytic steam reforming zone. The endothermic catalytic steam reforming zone and the heat exchange zone are respectively disposed tube side and shell side within a shell-and-tube reforming exchanger. The reforming exchanger comprises a plurality of tubes packed with low pressure drop catalyst-bearing monolithic structures wherein an inside diameter of the tubes is less than 4 times a maximum edge dimension of the catalyst structures.

The invention relates to an improved thermosiphon and to a method for transferring heat. The thermosiphon has a higher efficiency than existing thermosiphons because it does not rely on a pool-boiling evaporator but rather uses a forced-convection boiling evaporator. The inlet of the evaporator is located in its upper portion and is in fluid communication with a condenser. The fluid in its liquid phase enters the evaporator from its inlet in its upper portion and, by gravity, flows down the piping network of the evaporator, clinging on the inner surface of the tubes of the piping network. As the liquid flows down, it evaporates such that the fluid at the bottom of the evaporator is predominantly in a gaseous phase. The fluid in gaseous phase is then returned to the condenser.

The present invention refers to an apparatus for treating and preparing food having a cooking chamber in which the food is treated and cooked. The apparatus further includes a motor-driven ventilation fan which serves to circulate the cooking chamber atmosphere, and a gas burner which serves for combusting the gas-air mixture. The cooking chamber is heated by use of a heat exchange device which includes a heat exchange pipe assembly. The heat exchange device surrounds the ventilation fan. The heat exchange pipe assembly is characterized in that at least two pipe strands are provided which extend substantially around the ventilation wheel in a continuous bordering or loop of the ventilation wheel. The subject matter of the present invention is also a heat exchange device for an apparatus of this type.

This gas equipment, for other than air, includes a fixed scroll and an orbiting scroll, each having fins upon their back surfaces. The orbiting scroll remains within a housing having fins that engage with the fins on the orbiting scroll. The internal fins of the housing transfer heat from the orbiting scroll to the housing for air cooling by the atmosphere. The spiral arranged fins pump working fluid within the housing to increase heat transfer. The housing may also have an exterior fan. The orbiting scroll receives torque and rotation from a magnetic coupling or magnetic face seal, without a physical connection to a motor, so that the atmosphere does not infiltrate inside the housing. The present invention also has an enclosed inlet plenum to prevent infiltration of the atmosphere into the working fluid.

The invention relates to a ultralow temperature air source heat pump hot-water machine, which comprises a compression engine(1),a air-side heat exchanger (5) and a hot-water-side heat exchanger(8) which are connected by pipeline; the compression engine(1) is internally provided with a cavity(16), one side of the compression engine(1) is provided with an air-supplement port. The heat pump hot-water machine further comprises an air-supply return circuit, a refrigerating circuit and an auxiliary air-supply return circuit. The heat pump hot-water machine can work in the ultralow temperature work environment, and has low delivery temperature, improves the conversion of thermal energy effect and the system energy efficiency ratio, and is favor of energy saving and environmental protection.

The invention provides a method for defrosting an air conditioning unit and the air conditioning unit. The method for defrosting the air conditioning unit comprises the steps that (1) the environment temperature T1 and the air absorption temperature T2 of a compressor of the air conditioning unit are detected; (2) when T2 is smaller than T3 and the running time t1 of the compressor is longer than the first preset time, if T4 is smaller than T1 and T1 is smaller than T5, the compressor is controlled to stop operating, a fan of an outdoor unit is controlled to operate, defrosting operation conducted by the fan is started, and after the fan is operated for the second preset time, defrosting operation is stopped, wherein T3 is the first preset temperature, T4 is the second preset temperature, and T5 is the third preset temperature. According to the method for defrosting the air conditioning unit, the compressor is controlled to stop operating, the fan of the outdoor unit is controlled to operate to conduct defrosting operation, the temperature of hot water in an indoor heat exchanger cannot be reduced in the defrosting process, and therefore the energy consumption amount of air conditioning unit heating is reduced. Meanwhile, in the defrosting process, the compressor stops operating and the energy consumption amount in the defrosting process is reduced.

A component of a gas turbine engine having: an internal cooling cavity; a baffle insert configured to be inserted into the internal cooling cavity; a plurality of trip strips extending upwardly from an exterior surface of the baffle insert; at least one separating feature located between a pair of ends of a pair of the plurality of trip strips, wherein the plurality of trip strips and the at least one separating feature are spaced from an interior surface of the internal cooling cavity; a plurality of trip strips extending upwardly from the interior surface; and at least one separating feature located between a pair of ends of the plurality of trip strips located on the interior surface of the internal cooling cavity, wherein the plurality of trip strips and the at least one separating feature of the interior surface are spaced from the exterior surface of the baffle insert.

The invention discloses a freeze-resistant type heat exchanger with a three-dimensional air cavity. The freeze-resistant type heat exchanger with the three-dimensional air cavity comprises a shell-and-tube type heat exchanger body and a plurality of concentric circular rings, wherein, the concentric circular rings are formed by the method that a multi-circuit parallel connection metal pipe is winded in the shell-and-tube type heat exchanger body, the concentric circular rings are mutually connected from big to small, and the adjacent circular rings are separated through sleeves. The freeze-resistant type heat exchanger with the three-dimensional air cavity has the beneficial effects that the freeze-resistant effect of the heat exchanger is achieved by building multi-loop passageways by using sleeves with different sizes and the air cavities, and big heat exchange amount is achieved through multi-loop heat exchanging in a small volume.

The invention belongs to the related field of heat pumps, and discloses an evaporator and a solar heat pump water heater. The evaporator comprises a shell, a heat exchange assembly, a cross-flow fan,an air inlet passage and a transparent cover plate. One end of the shell is provided with an air inlet, and the other end of the shell is provided with an air outlet. The heat exchange assembly is located in the shell, refrigerant media circulate in the heat exchange assembly, and the surface of the heat exchange assembly is coated with a heat absorption coating. The cross-flow fan is located in the shell and arranged on one side of the heat exchange assembly. The air inlet passage is arranged between the heat exchange assembly and the cross-flow fan. The transparent cover plate is installed on the shell and right faces the sunny side of the heat exchange assembly. The solar heat pump water heater comprises the evaporator. The heat exchange assembly is coated with the heat absorption coating, the cross-flow fan is arranged, solar irradiation can be absorbed, forced convection heat exchange with air is achieved, the heat exchange amount is increased, and the fan load is reduced. The evaporator and the solar heat pump water heater have the characteristics of being simple in structure and stable in performance.

The invention provides a supercritical water oxidation reactor which comprises a reactor cylinder, an oxidant inner pipe, a stirring device, and a heater and a cooler which sleeve the reactor barrel.A working area is arranged in the reactor cylinder, and the reactor cylinder is provided with a feed liquid inlet along the axial direction and a feed liquid outlet along the radial direction. The heater has a supercritical area formed corresponding to a heating area of the working area, and the cooler has a sub-critical area formed corresponding to a cooling area of the working area. The oxidantinner pipe comprises a first pipe which is located in the reactor cylinder and arranged in the axial direction and a second pipe which is formed by bending and extending the first pipe in the radial direction and partially extends out of the reactor cylinder, and a plurality of through holes are formed in the second pipe. The stirring device is mounted on the reactor cylinder and is used for stirring the working area so as to uniformly mix an oxidant with an organic waste liquid to be treated. The separation of inorganic salt in the supercritical water oxidation reactor can be effectively reduced, and the corrosion of the supercritical water oxidation reaction to the interior of the supercritical water oxidation reactor is avoided.

The invention discloses an ultrahigh-rate liquid supply falling-film evaporative water chilling system and provides a system which can use a solution pump to realize ultrahigh-rate liquid supply and can provide low-temperature cold water. The exhaust port of a refrigeration compressor is connected with the inlet of a condenser, the outlet of the condenser is connected with the gas-liquid inlet of a falling-film evaporator through a throttling device, the gas outlet of the falling-film evaporator is connected with the suction port of the refrigeration compressor, the liquid outlet of the falling-film evaporator is connected with the inlet of the solution pump, the liquid outlet of the solution pump is connected with a liquid distribution pipeline inlet in the upper part of the falling-film evaporator, liquid is supplied to a liquid distributor in the falling-film evaporator through a liquid distribution pipeline, and ultrahigh-rate liquid supply circulation is realized by using the solution pump. A water chilling unit provided by the invention realizes the ultrahigh-rate liquid supply circulation through the effect of the solution pump, the heat exchange capacity between refrigerant liquid and a heat exchange pipeline is increased, the heat exchange efficiency is improved, the magnitude of the heat exchange capacity of the system is convenient to control, the cold water outlet temperature can reach approximate 2DEG C, and the ultrahigh-rate liquid supply falling-film evaporative water chilling system can be widely used for air conditioning systems which need low-temperature cold water.

The invention relates to a coating composition comprising (i) a supporting medium, and (ii) a plurality of cellulose particles, having an average dry particle size of less than 10 μm, dispersed in the supporting medium, excluding aqueous coating compositions adapted for application to paper. The invention also relates to a coating composition comprising (i) a supporting medium, and (ii) a plurality of cellulose particles, having an average dry particle size of less than 10 μm, dispersed in the supporting medium in an amount of less than about 5 g/L. The coating compositions of the invention form coatings which have useful thermal properties.

The invention discloses an automatic blow molding system based on raw material processing, wherein the upper end of a feeding cabin communicates with a raw material processing shell; a round plate isdisposed inside the raw material processing shell with an end cap; the round plate is fixedly connected to a rotation motor by an output shaft of the rotation motor; the upper end of the round plate is fixedly connected to an annular protective wall; a stirring motor is fixedly embedded in the center of the round plate; an output shaft of a stirring motor is fixedly connected to a stirring rod; aninfrared receiver is fixedly embedded on the side wall of one end of the round plate; the infrared receiver is used for receiving signals of an infrared emitter which is embedded fixedly on the innerwall of the raw material processing shell; the other end of the round plate is equipped with an insertion hole; the insertion hole is used for insertion of an output rod of an electric telescopic rod; a shell of the electric telescopic rod is fixedly connected to the raw material processing shell; and one side of the raw material processing shell communicates with a hot wind inlet pipe, the otherside of the raw material processing shell communicates with a gas lack exhaust pipe, and the bottom end of the round plate is fixedly connected to a weight sensor and a single-chip microcomputer controller.

The invention discloses a refrigerating device. The refrigerating device comprises a compressor component, a condenser, a first evaporator, a flash evaporator and a second evaporator, wherein the compressor component comprises a first cylinder and a second cylinder; the first cylinder comprises a first air sucking opening and a first exhausting opening; the second cylinder comprises a second air sucking opening and a second exhausting opening; a first end of the condenser communicates with the first exhausting opening and the second exhausting opening respectively; a first throttling part is connected in series between the first end of the first evaporator and a second end of the condenser; the flash evaporator is provided with an inlet pipe, a liquid discharging pipe and an exhausting pipe; the inlet pipe is connected with the second end of the liquid discharging pipe; the exhausting pipe is connected with the first air sucking opening; a second throttling part is connected in series between the first end of the second evaporator and the liquid discharging pipe; the second end of the second evaporator is connected with the second air sucking opening. The refrigerating device disclosed by embodiment of the invention is capable of increasing the heat exchange capacity of the refrigerating device and reducing the power of a compressor.

A high-temperature, regulated power supply uses wide band gap transistors to drive a Royer circuit. Pulses output from the Royer circuit are gated through a pulse width modulator to control the duty cycle of wide band gap transistors that drive an output transformer. The output of the transformer is rectified and filtered to provide the regulated D.C. output voltage. Regulation is accomplished by sampling the output voltage, comparing it to a reference voltage and using the difference between the output voltage and the reference voltage to control the pulse width modulator. High temperature operability is provided by using wide band gap transistors and iron or steel core transformers. This technique also provides a radiation hard assembly.

The invention provides a high-efficiency heat exchanger flow passage structure, an air conditioner and a heat exchange method and relates to the technical field of air conditioner heat exchange. The high-efficiency heat exchanger flow passage structure comprises a first lateral pipeline and a second lateral pipeline. A first heat exchange pipe assembly and a second heat exchange pipe assembly arecombined to form a heat exchange flow path. The heat exchange flow path comprises a first heat exchange section and a second heat exchange section which are mutually connected. When flowing in the heat exchange flow path, a heat exchange medium can flow forwards in the first heat exchange section in the first flowing direction relative to outside airflow, and can also flow reversely in the secondheat exchange section in the second flowing direction relative to the outside airflow. Compared with heat exchangers in the prior art, the high-efficiency heat exchanger flow passage structure has theadvantages that by adoption of the first heat exchange section and the second heat exchange section which are mutually connected, the heat exchange medium can flow forwards and reversely in the heatexchange flow path in the air flowing direction, forward flowing and reverse flowing are mixed, the heat exchange capacity is improved, the heat exchange efficiency is high, and the heat exchange effect is good.

A radiant heating system includes a molded agglomeration of inert natural stone waste and a heating element embedded in the agglomeration. The agglomeration contains 45-55% by weight of stone particles having a size from 1 to 5 mm; 30-35% by weight of stone dust having a size from 0.01 mm to 0.5 mm; and 20-25% by weight of a resin having a water-based acrylic component.

The invention provides a radiation waste-heat boiler and belongs to the technical field of heat exchanging. The radiation waste-heat boiler comprises a pressure shell. The pressure shell is provided with a gas inlet and at least one gas outlet, wherein the gas inlet is used for inputting of hot gas, and the gas outlets are used for outputting gas cooled through a cooling device. The pressure shell is internally provided with the cooling device. The cooling device comprises an inner water-cooling wall, at least one pipe panel water-cooling wall is arranged in the circumferential direction of the inner layer water-cooling wall, each pipe panel water-cooling wall is composed of at least two water-cooling wall polished pipes which are connected through fins, one end of at least one pipe panel water-cooling wall is connected with the inner water-cooling wall, the other end of at least one pipe panel water-cooling wall points to the middle axis of the pressure shell, and the water-cooling wall polished pipes are parallel to the middle axis. According to the radiation waste-heat boiler, the heat exchange amount of unit space of the radiation waste-heat boiler is increased, and the equipment size is reduced.

The invention relates to the technical field of waste heat boilers, in particular to an energy-saving and environment-friendly gas heating and water heating boiler. Burning pipes are intertwined outside a gas main pipe in the circumferential direction, and smoke outlets of the burning pipes penetrate through a shell of a smoke exhaust chamber and extend to an inner cavity of the smoke exhaust chamber; a smoke vent is reserved at one side of the smoke exhaust chamber, a water-steam separator is arranged above a water-steam return chamber, and the water-steam separator and the water-steam return chamber are connected through steam pipes; a gas-guide pipe is arranged on the top of the water-steam separator in a penetrating mode, a heat exchanger is connected to the tail end of the gas-guide pipe, and the heat exchanger communicates with a burning chamber through a water-guide pipe. The energy-saving and environment-friendly gas heating and water heating boiler is large in heat exchange amount and high in heat exchange efficiency, and fuel is saved.

The invention discloses a forced air cooling type laser cooling system. Comprising a laser heating component, the laser heating component is installed in a box body, one side of the box body is provided with an air inlet, the other side of the box body is provided with an air outlet, the air inlet is connected with an air supply device, the air inlet is provided with a first cooling device, and the first cooling device is located between the air supply device and the air inlet. And the air outlet is provided with a second cooling device. The cooling system provided by the invention adopts an air cooling mode to cool a heating part of the laser, and adopts an external cooling working medium to cool air, so that the cooling system has larger heat exchange amount, is less limited by the environment, can be used in a high-temperature environment, is more compact in structure, and has stronger heat exchange capability and environmental adaptability.

The invention discloses a dry-type transformer with improved heat dissipation, and relates to the technical field of dry-type transformers, and the dry-type transformer is characterized in that the dry-type transformer comprises a vertical iron core, the top and the bottom of the vertical iron core are fixedly connected with a transverse iron core, and the two ends of the transverse iron core are fixedly connected with a fixing frame and a second fixing frame respectively; a supporting column is fixedly connected to the bottom of the second fixing frame, fans are fixedly connected to the positions, located at the two ends of the high-voltage coil, of the top of the supporting column, wind direction adjusting devices are fixedly connected to the tops of the fans, and the vertical iron core is sequentially sleeved with a low-voltage coil, an insulating sleeve and the high-voltage coil. A heat dissipation gap exists between the high-voltage coil and the insulating sleeve, and the top of the second fixing frame is fixedly connected with supporting partition plates which are distributed on the outer side of the vertical iron core in an array mode. The dry-type transformer has the advantages that heat in the dry-type transformer can be transferred to the outer wall to facilitate heat dissipation, and the wind direction of the fan can be adjusted to enable wind blown by the fan to more effectively dissipate heat of the dry-type transformer.

The invention relates to a strengthened closed type medium-deep-layer buried pipe heat exchange system. The strengthened closed type medium-deep-layer buried pipe heat exchange system solves the technical problem that existing buried pipe heat exchange efficiency is low. The strengthened closed type medium-deep-layer buried pipe heat exchange system comprises a water return vertical shaft, a wateroutlet vertical shaft, a water return vertical pipe and a water outlet vertical pipe, the upper end of the water return vertical pipe is the water return end, the upper end of the water outlet vertical pipe is the water outlet end, at least one water return horizontal shaft is arranged at the lower end of the water return vertical shaft, at least one water outlet horizontal shaft is arranged at the lower end of the water outlet vertical shaft, the water outlet horizontal shaft and the water return horizontal shaft are parallel and are arranged in a staggered manner, a water return horizontaltransverse pipe communicating the water return vertical pipe is arranged in the water return horizontal shaft in a penetrating manner, a water outlet horizontal transverse pipe communicating with thewater outlet vertical pipe is arranged in the water outlet horizontal shaft in a penetrating manner, and a branch pipe communication structure is arranged between the water return horizontal transverse pipe and the water outlet horizontal transverse pipe. The strengthened closed type medium-deep-layer buried pipe heat exchange system has the advantages that the horizontal transverse pipes and horizontal branch pipes are used for strengthening the buried pipe heat exchange area, and the system heat exchange quantity can be obviously increased. An effective heat preservation measures can be taken, and the system heat loss can be prevented.

The invention provides an air conditioner control method and an air conditioner. The air conditioner control method comprises the following steps that the air conditioner is started, a first throttlevalve and a second throttle valve are at an initial opening degree within a first preset duration, and after the operation duration of the air conditioner exceeds the first preset duration, the temperature difference detected by a first temperature sensing bulb and a second temperature sensing bulb is calculated, and the opening degree of the first throttle valve and the opening degree of the second throttle valve are adjusted according to the temperature difference value. According to the air conditioner control method and the air conditioner, the superheat degree of a heat exchanger can be controlled, normal operation of the heat exchanger is guaranteed, and reliability is improved.

The invention discloses a heat exchanger, a heat exchanger flow path control method, a readable storage medium and a household appliance. The heat exchanger comprises an inflow pipe, an outflow pipe, a first heat exchange pipe set, a second heat exchange pipe set, a first electromagnetic valve and a switching valve set. One end of the first heat exchange pipe group communicates with the inflow pipe through a first pipeline; the other end of the second heat exchange pipe group is communicated with the outflow pipe through a third pipeline; the first electromagnetic valve is arranged on the second pipeline; the first end of the switching valve set communicates with the outflow pipe, the second end communicates with the end, away from the inflow pipe, of the first heat exchange pipe set, and the third end communicates with the end, close to the first electromagnetic valve, of the second heat exchange pipe set. According to the technical scheme, different numbers of heat exchange flow paths can be switched between different load changes.

The invention provides a liquid storage device. The liquid storage device comprises a gas-liquid separation unit, a heat exchange unit and a barrel, wherein the gas-liquid separation unit comprises a first gas inlet pipe, a ventilation pipe and a first gas outlet pipe; and the heat exchange unit comprises a second air inlet pipe, a heat exchange pipe and a second air outlet pipe. The gas-liquid separation unit and the heat exchange unit are arranged in the same barrel, so that the device can achieve the functions of refrigerant gas-liquid separation and refrigerant heat exchange (supercooling or superheating) at the same time in the air conditioning process. Furthermore, the invention further provides an air conditioning system. The air conditioning system comprises a compressor body, an evaporator, a condenser, a throttling unit and the liquid storage device. The liquid storage device is used for conducting the refrigerant gas-liquid separation and the refrigerant heat exchange, so that the air conditioning system not only improves the heat exchange amount and the performance, but also reduces the number of devices and reduces the production and manufacturing cost.

The invention discloses a variable flow type heat exchanger and a power assembly, and belongs to the technical field of automobile parts. A variable flow type heat exchanger comprises a shell, a first heat exchanger and a second heat exchanger, the heat exchange core body is arranged between the first shell and the second shell, and the heat exchange core body comprises a plurality of layers of heat exchange plates; the cooled fluid interface comprises a first interface, a second interface and a third interface; in the first state, cooled fluid flows into the heat exchange core body from the first connector, and flows out from the second connector after being subjected to heat exchange through fluid flow channels of all layers of heat exchange plates of the heat exchange core body. And in the second state, the cooled fluid flows into the heat exchange core body from the first connector and the second connector, and flows out from the third connector after heat exchange. A powertrain includes a variable flow heat exchanger. By means of the mode switching mode, the function of changing the internal flow is achieved, and the requirements of different operation working conditions for the cooler are met.

The invention belongs to the field of solar photo-thermal effect, and in particular relates to a solar photo-thermal energy-storage drying room system and an application method. The drying room systemcomprises a drying room, a plate heat collecting and heat exchanging system separately communicating to the drying room through two two-position three-way valves and a slot type heat collecting and heat exchanging system. The plate heat collecting and heat exchanging system comprises a plate heat collector. The slot type heat collecting and heat exchanging system comprises a slot type heat collector, a low-temperature fused salt heat storage tank and a pipeline communicating the slot type heat collector and the low-temperature fused salt heat storage tank. A low-temperature fused salt circulating pump is arranged on the pipeline. A fan is arranged between the two two-position three-way valves. The solar photo-thermal energy-storage drying room system based on the solar photo-thermal effect and the low-temperature fused salt heat storage characteristic can heat the drying room continuously.

A resonant charge air cooler is provided having internal structures for producing vortexes in the air flow, thus inducing turbulence and increasing heat transfer efficiency. The air cooler includes an inlet tank, an outlet tank and a plurality of tubes fluidly connecting the inlet and outlet tanks. The tubes include vortex-inducing structures such as dimples or grooves formed on their interior surfaces. A vortex-inducing structure such as wire mesh formed from a long wire, a wire grid or parallel wires on a frame is included in the inlet tank. By changing the geometry of the internal structures, turbulent eddies are created at very small length scales. Adjustment of the geometries results in vortexes that have almost the same size as those produced by the surface dimples or grooves formed on the walls of the tubes connecting the inlet and outlet tanks, whereby a resonance behavior occurs and heat transfer increases.

The invention relates to the technical field of kitchen utensils, in particular to a pot rack and a gas stove. The pot rack comprises a pot rack body, a guide plate and a heat exchange structure, and a flue gas inlet is formed in the inner ring surface of the pot rack body; the flow guide plate is fixedly connected with the pot rack body, and the flow guide plate is located above the flue gas inlet; the guide plate is provided with a flue gas discharge port, or the outer ring surface of the pot rack body is provided with a flue gas discharge port; the heat exchange structure is fixedly connected in an inner cavity formed between the inner ring surface and the outer ring surface of the pot rack body, the heat exchange structure is located between the flue gas inlet and the flue gas discharge outlet, the heat exchange structure is provided with heat exchange holes, and the flue gas inlet and the flue gas discharge outlet are both communicated with the heat exchange holes. According to the pot rack and the gas stove, the heat exchange amount of high-temperature smoke and the pot rack can be increased, heat conduction of the pot rack is effectively utilized to heat the bottom of a pot, heat loss is reduced, and the heat efficiency of the gas stove is improved.

A heat exchange device includes a plurality of flow passages. Each flow passage has an inlet and an outlet configured for hot fluid flow in a direction from the inlet to the outlet. Secondary heat transfer elements within and adjacent each flow passage have heat transfer characteristics varying in the direction of the hot fluid flow such that peak metal temperatures limit creep to acceptable values and such that transient thermal stresses are limited to values producing acceptable life of the device.