91results about How to "Increase heat transfer contact area" patented technology

The invention relates to the technical field of electric cars, in particular to an integrated water-cooled power battery box. The integrated water-cooled power battery box provided by the invention comprises a box cover, a box body and a temperature regulating power system, wherein the box body is made of an aluminum alloy material and is manufactured by an extrusion moulding technology; a circulating flow passage is formed in the wall of the box body; a circulating loop for a temperature regulating medium to flow circularly is arranged inside the wall of the box body; and the temperature regulating power system can drive the temperature regulating medium to circularly flow in the circulating loop. In such a way, a water cooling board and a battery box are designed in an integrated manner,a hollow aluminum alloy section is adopted to achieve lightweight design, mechanical properties such as strength and rigidity are met, the integrated water-cooled power battery box is simpler in structure, better in technical performance and smaller in occupied space, and the comprehensive cost can be reduced; the heat-dissipating, cooling and temperature-raising and heating functions can be achieved by using one set of temperature regulating power system, the integrated water-cooled power battery box is simpler in structure, more convenient and fast to use and smaller in occupied space, themanufacturing cost and the using cost can be reduced, and the heat-dissipating efficiency and the heating efficiency can be improved.

The invention relates to a combined type hydrogen chloride synthetic furnace of by-product high-pressure steam, comprising a synthetic furnace and a cooler at the top part of the synthetic furnace; the synthetic furnace is composed of an upper section graphite barrel, a middle section graphite barrel and a lower section graphite barrel and a steel shell sheathed outside the barrel, the lower section steel shell is communicated with the upper section steel shell by a pipeline to form a cooling water circulating channel, and an independent cooling water circulating channel is arranged on the middle section steel shell. The middle section of the synthetic furnace is a high-temperature section and adopts the high pressure resistant graphite barrel, the steel shell and the independent cooling water circulating channel, and the shell is separated from the shells at two ends, the middle section graphite barrel is not connected with various pipelines or parts, the problem of pressure resistance of the whole middle section is solved, so as to lead hot water flowing out from the middle section to generate high-pressure steam through a flash drum for direct use by users or other steam network without building an independent steam network.

The invention discloses a hydrogen power system based on a heat self-balancing solid hydrogen source reactor. The hydrogen power system comprises a hydrogen source, the heat self-balancing solid hydrogen source reactor, a hydrogen fuel cell, an air compression system and a vacuum pump; and an inlet of the heat self-balancing solid hydrogen source reactor is connected with the hydrogen source, an outlet of the heat self-balancing solid hydrogen source reactor is divided into two paths, one path is connected with the hydrogen fuel cell, and the other path is connected with the vacuum pump. According to the hydrogen power system, a phase-change material can store heat released by hydrogen absorption reaction in a latent heat form and release the heat during hydrogen desorption reaction, thus,heat in the hydrogen absorption process is used for the hydrogen desorption process, heating and cooling devices are omitted, the cost is reduced, the energy utilization rate is increased, and meanwhile, the hydrogen absorption and desorption reaction rate can be increased.

A liquid-cooled plate for a power battery of an electric vehicle belongs to the technical field of electric vehicles, the liquid-cooled plate for a power battery of an electric vehicle comprises an integrally formed liquid-cooled plate body, both ends of the liquid-cooled plate body are provided with openings and a flow channel structure is arranged inside the liquid-cooled plate body, the two ends of the liquid-cooled plate body are connected with a first hollow end plate and a second hollow end plate communicating with the liquid-cooled plate body in a sealing manner, a water inlet joint isarranged on the first hollow end plate, a water outlet joint is arranged on the second hollow end plate, the invention has the beneficial effect that, the electric vehicle power battery liquid-cooledplate has the advantages of simple and stable overall structure, low manufacturing cost, increases heat exchange contact area and contact time with the power battery module, improved heat exchange efficiency, improved cooling effect of the power battery module, and light overall weight, which meets the lightweight requirements of the whole vehicle.

The invention discloses a high-power lithium ion battery thermal management system, comprising a lithium battery module consisting of multiple lithium battery units, a plurality of heat pipe radiatingunits, a module box body, a phase change coolant, a temperature and liquid level collector and the like. According to the scheme of the invention, the battery units are immersed in the phase change coolant, and the heat pipe radiating units are combined to quickly take away the heat inside the box body, and thus a vehicle-mounted energy storage system can work within an appropriate temperature range under a high-temperature environment, the temperature consistency of the battery units can be effectively improved, the safety and reliability of rail vehicle energy storage systems under the hightemperature can be effectively improved, and low economic indicators, low volume quality indicators and environmental protection indicators can also be increased.

The invention aims to provide a double-shaft double-motor ship ammonia-electricity hybrid power system with a fuel cell. The system comprises an ammonia fuel engine, a first reversible motor, a secondreversible motor, a third reversible motor, a diesel generator set, a storage battery, a super capacitor, a fuel cell, a propeller, a liquid ammonia storage and supply device, a power transformationdevice, a ship power grid, a ship load, a whole ship cooling system and an exhaust gas recirculation system. Hybrid propulsion of the ammonia fuel engine and the motor and coordinated power supply ofthe diesel generator set and the energy storage unit can be achieved. Meanwhile, multi-stage utilization of cold energy of the energy storage unit and the engine is achieved, waste gas of the fuel cell supplements gas for the waste gas turbine, the gas inlet efficiency is improved, ship energy consumption is reduced, the whole ship efficiency is improved, and the application range of the system iswidened.

The invention aims to provide a ship ammonia-electricity hybrid power system with a heat storage-cooling battery heat management system. The ship ammonia-electricity hybrid power system comprises an ammonia fuel engine, a reversible motor, a diesel generator set, a storage battery, a capacitor, a fuel battery, a propeller, a liquid ammonia storage and supply device, a power transformation device,a ship mainstream power grid, a ship load, a whole ship cooling system and a waste heat system. Hybrid propulsion of the ammonia fuel engine and the motor and coordinated power supply of the diesel generator set and the energy storage unit can be achieved, multi-stage utilization of cold energy of the energy storage unit and the engine is achieved, and the waste heat system can achieve multi-stageheat energy utilization and is integrated with the cooling system.

The invention relates to a low-temperature heating radiator which comprises one or more sets of plate like heat transportation devices and one or more parallel channel type fin heat exchange structures combined with the plate like heat transportation devices. Each plate like heat transportation device is of a plate like structure formed by extruding metal materials, wherein two or more micro pipes arranged side by side are arranged in the plate like structure, and heat exchange transfer is carried out in the micro pipes through flowing media. Each parallel channel type fin heat exchange structure is attached to the plate surface of the corresponding plate like heat transportation device and provided with a plurality of air convection channels arranged side by side and comprises a parallel channel type sparse fin heat exchange structure. Heat exchange is enhanced by means of the plate like heat transportation devices of the special structures, and the parallel channel type fin heat exchange structures are attached to the plate surfaces of the corresponding plate like heat transportation devices correspondingly, so that natural air convection heat exchange and forced air convection heat exchange can be carried out as needed, the heat exchange efficiency is improved, an effective heating function is achieved, the low-temperature heating radiator has the advantages of being low in temperature, capable of saving energy, low in cost and free of maintenance, and meanwhile precision management and energy saving can be achieved.

The invention discloses a coil pipe heat accumulation heat exchanger. The coil pipe heat accumulation heat exchanger comprise a shell, a first uniform flow pipe, a second uniform flow pipe, an outputpipe, an input pipe and a plurality of heat accumulation plates; the first uniform flow pipe and the second uniform flow pipe are correspondingly installed at the two ends of the shell; a snakelike discharging pipe is arranged between the first uniform flow pipe and the second uniform flow pipe; one end of the snakelike discharging pipe is connected to the corresponding first uniform flow pipe; the other end of the snakelike discharging pipe is connected to the corresponding second uniform flow pipe; the side faces of the heat accumulation plates are tightly attached to the snakelike discharging pipe; the first uniform flow pipe is communicated with the output pipe; an outlet of the output pipe stretches out of the upper face of the shell; the second uniform flow pipe is communicated withthe input pipe, and an outlet of the input pipe stretches out of the lower face of the shell; a hot flow output port communicated with an inner cavity of the shell is formed in the upper face of one end of the shell; and the lower face of the other end of the shell is provided with a hot flow input port communicated with the inner cavity of the shell. The coil pipe heat accumulation heat exchangeris compact in structure, the pressure bearing capacity is high, the metal consumption is reduced, the contact area between cold and hot fluid is increased and the contact time between the cold and hot fluid is prolonged, and the heat exchanging effect is improved.

The invention aims to provide a power battery thermal management system based on tab and module bottom combined liquid cooling heat dissipation. The power battery thermal management system comprises abattery cell, a positive tab, a negative tab, a connecting bar, a tab liquid cooling plate, an isolation frame, a soaking film, a bottom liquid cooling plate and a bottom heat insulation pad. The positive electrode and the negative electrode of the battery cell are connected through the connecting bar and are fixed into a group through the left end plate, the right end plate and the peripheral fastening bandages; an isolation frame is arranged at the upper part of the system and is adhered to the top surface of the battery cell through a structural adhesive, a soaking film is laid after the isolation frame is provided with front and rear channels to fill the heat-conducting adhesive, and a tab liquid cooling plate is arranged above the soaking film; and a lower liquid cooling plate, a bottom soaking film and a bottom heat insulation pad are sequentially arranged at the bottom of the battery cell from top to bottom. Based on battery cell tab and bottom combined liquid cooling heat dissipation, the system is compact in structure, high in temperature uniformity and good in heat dissipation effect; the upper liquid cooling plate and the lower liquid cooling plate clamp a module, thereby further strengthening the system reliability.

The invention provides a refrigerator which comprises a refrigerator body with a storage chamber and a compressor chamber defined. The refrigerator is characterized in that the refrigerator further comprises an evaporation pan, a compressor and a drainage pipe, wherein the evaporation pan is installed on a bottom frame of the refrigerator, provided with a concave cavity which is open upwards and used for collecting and evaporating condensate water and defrosting water in the refrigerator; the compressor is installed on a bottom board of the concave cavity of the evaporation pan, and at least the lower portion of a housing of the compressor is located in the concave cavity of the evaporation pan; and the drainage pipe penetrates through the upper wall of the compressor chamber and extends to the position close to the top face of the housing of the compressor, and the drainage pipe is used for draining the condensate water and the defrosting water to the surface of the housing of the compressor. By installing the compressor in the concave cavity of the evaporation pan, the inner structure of the compressor is simple and compact; by draining the condensate water and the defrosting water to the surface of the housing of the compressor, strip-shaped liquid membranes are formed, the contact area for heat exchange is enlarged, and the evaporation efficiency is improved. Furthermore, the situation that in case of overhigh temperature, the working efficiency of the compressor is reduced and the service life of the compressor is shortened is avoided.

The invention discloses a pre-cooling spray evaporation type condenser. A pre-cooling heat exchange fin coil and two groups of condensation heat exchange fin coils are arranged in a condenser shell, and the two groups of condensation heat exchange fin coils are arranged in the condenser shell in a V shape; a refrigerant is circulated in a pipe of the pre-cooling heat exchange fin coil and pipes ofthe condensation heat exchange fin coils, water mist spray devices are located on the two sides of the two groups of condensation heat exchange fin coils, and an air outlet device is located at the top of the condenser shell. The condenser has the advantages that sprayed water mist is uniformly attached to and makes full contact with the surfaces of fins and the surfaces of the coils along with flowing of air for heat absorption and evaporation, the heat of the refrigerator in the condensation heat exchange fin coils is brought away, the heat exchange efficiency is high, and the size of equipment is small; the pre-cooling heat exchange fin coil pre-cools and cools the refrigerant entering the condensation heat exchange fin coils, the scaling efficiency of the condensation heat exchange fin coils is reduced, the later maintenance work is reduced, and meanwhile the production cost is reduced.

The invention relates to an efficient plate-type low temperature heating radiator and a special assembly thereof. The efficient plate-type low temperature heating radiator comprises more than one sets of plate-type thin channel array enhancement heat transfer plates and more than one heat transfer fins; the plate-type thin channel array enhancement heat transfer plates are formed by extrusion forming of metal materials, and two or more thin channels arranged in parallel are formed in each plate-type thin channel array enhancement heat transfer plate to form a thin channel array plate-type structure; and one or more layers of heat transfer fins are stacked and compounded on the plate face of each plate-type thin channel array enhancement heat transfer plate, each heat transfer fin is provided with a plurality of air natural convection channels arranged in parallel, the periphery of each air natural convection channel is closed or opened, and the air natural convection channels are sequentially arranged in the plate length direction or the vertical direction of the plate-type thin channel array enhancement heat transfer plates. According to the efficient plate-type low temperature heating radiator and the special assembly, enhancement heat transfer is achieved through the plate-type thin channel array enhancement heat transfer plates, the large-area heat transfer fins are compounded on the plate faces of the plate-type thin channel array enhancement heat transfer plates, and therefore heating can be achieved at a low water supply temperature, and efficient energy saving and low cost of a heating system can be achieved.

The invention discloses a high-heat-dissipation explosion-proof three-phase asynchronous motor. A stator iron core is installed in a motor base. A rotor matched with the stator iron core is installed in the stator iron core. End rings are respectively fixed on two ends of the rotor. A plurality of rotor fan blades are arranged along the peripheral directions of the two end rings. The widths, along the peripheral direction, of the rotor fan blades are forwards or backwards gradually reduced. Rib plates are arranged in grooves formed in the outer periphery of the stator iron core, and the thickness of each rib plate is equal to the depth of each groove. The outer diameter of the stator iron core is equal to the diameter of a cylindrical cavity of the motor base. The high-heat-dissipation explosion-proof three-phase asynchronous motor solves the problems that a V-shaped ring on a bearing of an original motor is poor in protection capability, wet dust can easily enter the inner part of the motor through a contact surface between the V-shaped ring and the bearing, and after a long time, lubricating grease loses effectiveness and an explosion-proof surface is damaged.

The invention aims to provide a power battery tab heat dissipation system based on coupling of a phase-change material and a U-shaped flat heat pipe. The power battery tab heat dissipation system comprises a battery cell, a flexible busbar, a phase-change material module, a U-shaped flat heat pipe, an isolation frame, a soaking film, a lower liquid cooling plate and a bottom heat insulation pad. The battery cells are connected through a soft row and then are fixed into a group through a left end plate, a right end plate and peripheral fastening bandages; an isolation frame is arranged at the upper part of the battery module and is adhered to the top surface of the battery cell through structural adhesive; the isolation frame is provided with a front channel, a middle channel and a rear channel, the front channel and the rear channel are provided with U-shaped flat heat pipes, the horizontal section of each U-shaped flat heat pipe is an evaporation end, and the vertical section is a condensation end. A bottom soaking film, a lower liquid cooling plate and a heat insulation pad are sequentially arranged at the bottom of the cell from top to bottom. Based on the combined heat dissipation of the tabs and the bottom of the battery cell, the phase change material, the heat pipe and the liquid cooling technology are coupled, the space utilization rate is high, the heat dissipation effect is good, and the temperature uniformity is good.

The invention relates to a novel hybrid-driven energy-saving air conditioning terminal which comprises more than one group of plate-shaped heat transport devices and more than one parallel channel type fin heat-exchange structure combined with the plate-shaped heat transport devices, wherein the plate-shaped heat transport devices adopt plate-shaped structures that are formed by extruding a metal material, more than two micro-tubes are arranged side by side in each plate-shaped structure, and heat exchange and transport are performed through a flowing medium in the micro-tubes; the parallel channel type fin heat-exchange structures are combined with plate surfaces of the plate-shaped heat transport devices; each parallel channel type fin heat-exchange structure is provided with a plurality of air convection channels which are arranged side by side in the length direction of the corresponding plate-shaped heat transport device in sequence; and each parallel channel type fin heat-exchange structure comprises a parallel channel type sparse fin heat-exchange structure and a parallel channel type dense fin heat-exchange structure. According to the novel hybrid-driven energy-saving air conditioning terminal, heat exchange is enhanced by the plate-shaped heat transport devices with the specific structures, and natural air convection heat exchange and forced air convection heat exchange can be performed as needed through the parallel channel type fin heat-exchange structures combined with the plate surfaces of the plate-shaped heat transport devices, so that the heat exchange efficiency is improved, effective heating, refrigeration and dehumidification functions are realized, the novel hybrid-driven energy-saving air conditioning terminal has the advantages of low cost and zero maintenance, and fine management and energy saving can be realized.

The invention discloses high-temperature slag and a waste heat recovery treatment device thereof, and relates to the technical field of steel smelting waste heat utilization. The high-temperature slagand the waste heat recovery treatment device thereof comprise a heat recovery device and a slag treatment device which are connected with each other. According to the high-temperature slag and the waste heat recovery treatment device thereof, the heat recovery device and the slag treatment device are arranged and connected with each other, so that the waste heat utilization rate of the high-temperature slag is improved, and the heat loss of the slag in the conveying process is reduced; a material conveying box is arranged in the heat recovery device, so that an approximately closed space is formed, the slag is continuously subjected to heat preservation in the conveying process, and the loss of the heat of the slag is slowed down; a spreading plate is arranged on the surface of a feedingpipe, the slag entering the material conveying box is spread and flattened, the distribution of the slag in the material conveying box is accelerated, and the heating effect of the waste heat of the slag is better; and a steam generation box is arranged in the heat recovery device, and a heat exchange pipe set is arranged in the slag treatment device, so that the waste heat of the slag can be fully utilized.

The invention relates to the technical field of chemical production equipment, in particular to a heat exchanger for chemical production. The heat exchanger comprises a box body, a first heat exchangeplate, a second heat exchange plate, a third heat exchange plate, ejection mechanisms, a reset mechanism and a blocking plate. According to the heat exchanger, the heat exchange contact area can be increased while the occupied area is reduced; the retractable ejection mechanisms are installed on both sides of the heat exchange plates, so that the heat exchange plates can be quickly and conveniently installed and disassembled, subsequent cleaning and maintenance are facilitated, and circulation of chemical liquid is ensured; the blocking plate is arranged outside a first circulating channel, when the heat exchange plates are not installed, a heat exchange chamber can further ensure the normal circulation of the chemical liquid without flowing to a drainage chamber and a water inlet chamberon both sides; and when the heat exchange plates are installed, a top plate pushes the blocking plate to be open, so that water can enter the heat exchange plates through sliding blocks, and automatic communication of the heat exchange plates with the drainage chamber and the water inlet chamber is realized.

The present invention relates to a high heating flux rack heat radiation cooling method and a high heating flux rack composite heat exchanger. The high heating flux rack composite heat exchanger comprises a rack heat exchanger and a heat transportation device. The rack heat exchanger is arranged at a back plate or a side plate of a rack and capable of performing exchange with heat air from a highheating flux rack and independently completing a full process of heat absorption and heat releasing, the heat transportation device is an independent device having one end being in surface contact with the rack heat exchanger and having the other end located at the external portion of the rack, the rack heat exchanger performs exchange with the heat air in the high heating flux rack and then transmits heat to one end of the heat transportation device with surface contact, and the heat transportation device transports heat to the other end through internal medium itself so as to take the heat out of the rack. The high heating flux rack composite heat exchanger can greatly save traditional air conditioning energy consumption and has very good safety and reliability.

The invention relates to an external temperature-increase heat exchange system of a biogas fermentation reactor and a working method, and belongs to the technical field of biogas engineering. The aimis to solve the problems that an existing fermentation reactor of biogas engineering is low in heat exchange efficiency according to a heating mode, and heat loss is large, and the provided external temperature-increase heat exchange system of the biogas fermentation reactor comprises the fermentation tank reactor, a heat exchanger, a heater, a biogas slurry circulating pipeline, a heating circulating pipeline and a heating medium circulating pipeline; liquid heating media enter a heat absorbing segment of the heating medium circulating pipeline to absorb heat of the heating circulating pipeline under the effect of negative pressure to be evaporated into gas; gas heating media enter a heat release segment of the heating medium circulating pipeline and are liquefied under the effect of negative pressure, and biogas slurry absorbs heat released by liquefying of the gas heating media to complete temperature increase. The heating media are used as heat exchange media during heat absorbingand releasing when having physical state changes, biogas slurry is guided into the exterior of the tank to increase the temperature to increase the contact area of heat exchange and increase the temperature-increase response speed of the biogas slurry, and heat exchange efficiency is higher than that of a traditional internal heat exchange mode.

The invention discloses a reactor with adjustable interior and exterior temperatures, comprising a reactor body, a reactor jacket, a stirring device and a reactor support. The reactor jacket is disposed outside the reactor body; an external heat exchange chamber is formed between the reactor jacket and the reactor body; the stirring device is disposed on a center line of the reactor body; the stirring device comprises a servo motor, a stirring shaft and stirring blades; the stirring shaft is provided with a stirring shaft through hole along its center axis; the part of the bottom of the reactor body in contact with the stirring shaft is provided with a stirring device water inlet; the part of the upper portion of the reactor body in contact with the stirring shaft is provided with a stirring device wat4er outlet; both the stirring device water inlet and the stirring device water outlet are communicated with the stirring shaft through hole; the stirring blades are of sector blade structure; the stirring blades are connected with the stirring shaft by welding. The use of the sector stirring blades enlarges heat transfer contact area, and the stirring shaft is hollowed and filled with a heat transfer medium so that the interior temperature of the reactor can be adjusted precisely.

The invention provides a capillary network radiation heat transfer ceiling floor and a ceiling pavement structure thereof. According to the capillary network radiation heat transfer ceiling floor, through the structure improvement, the heat conduction efficiency between a capillary heat conduction pipe and a heat conduction material plate is improved, the heat conduction material plate has a better external heat transfer effect, the heat transfer energy loss is reduced, the heat transfer energy utilization rate is increased, the heat transfer energy efficiency of the capillary network radiation heat transfer ceiling floor is further improved, the heat and cold supply capabilities of the capillary network radiation heat transfer ceiling floor are enhanced, the technical disadvantages caused after the enhancement of the heat and cold supply capabilities are inhibited, and the problem of limited technology application and popularization due to limited heat and cold supply capabilities in a radiation ceiling floor technology in the prior art can be solved; and moreover, the capillary network radiation heat transfer ceiling floor can be directly used for ceiling pavement to form ceiling pavement structures in various forms, is convenient to mount, and can be applied to different building scenes, thereby having wide market application prospects.

The invention discloses a laser beam multi-dimension precise adjusting device integrating an active heat dissipation structure. The device includes a laser, a base with a self-heat dissipation function, a rotating seat for adjusting a laser spot position, and a fixing seat; a transverse sliding groove is formed at the second corner of the rotating seat; a first adjustment rotation rod is formed atthe second corner area of the fixing seat, wherein the first adjustment rotation rod abuts against the transverse sliding groove and is used for driving the rotating seat to rotate relative to the fixing seat with a ball adopted a rotation fulcrum, so that the laser spot can move leftwards and rightwards along a transverse direction; a vertical sliding groove is formed at the fourth corner of therotating seat; and a second adjustment rotation rod is formed at the fourth corner area of the fixing seat, wherein the second adjustment rotation rod abuts against the vertical sliding groove and isused for driving the rotating seat to rotate relative to the fixing seat with the ball adopted the rotation fulcrum, so that the laser spot can move up and down along a vertical direction. The laserbeam multi-dimension precise adjusting device integrating the active heat dissipation structure of the invention is compose of precise mechanical transmission devices on the basis of optical technologies. With the laser beam multi-dimension precise adjusting device integrating the active heat dissipation structure of the invention adopted, the installation, debugging and use of laser beams under any temperature and angle conditions can be realized.

The invention discloses a high-temperature high-pressure rear pass coal economizer mounting structure of a coal power station. The high-temperature high-pressure rear pass coal economizer mounting structure comprises a heat exchange flue and a coal economizer hung in the heat exchange flue. The coal economizer is a heat exchange tube panel comprising a plurality of rows of communicated heat exchange tubes, the heat exchange tube panel is provided with a water inlet and a water outlet which are in fit connection with a water inlet header pipe and a water outlet header pipe respectively, shake-proof fixing plates in fit connection with the heat exchange tube are arranged on the side faces of the heat exchange tube panel, and fit shake-proof fixing mechanisms are arranged on the inner sidewalls of the heat exchange flue and are in fit connection with the shake-proof fixing plates. The high-temperature high-pressure rear pass coal economizer mounting structure of the coal power station hasthe advantages that the coal economizer can be mounted, inspected and repaired conveniently through hanging connection, and accordingly the structure is flexible to adjust; with the aid of the shake-proof structure, the coal economizer can be less prone to shaking and more reliable in structural stability, and damage caused by other external factors including earthquakes can be reduced.

The invention aims to provide an ammonia-electricity hybrid power system of an alternating-current and direct-current main network ship. The system comprises an ammonia fuel engine, a first reversiblemotor, a second reversible motor, a third reversible motor, a hoisting motor, a diesel generator set, a storage battery, a capacitor, a fuel cell, a propeller, a liquid ammonia storage and supply device, a power transformation device, a ship power grid, a ship load and a whole ship cooling system. Hybrid propulsion of an ammonia fuel engine and double motors, coordinated power supply of a dieselgenerator set and an energy storage unit, cooperative work of an AC main network and a DC main network and multi-stage utilization of cold energy of the energy storage unit and the engine can be achieved, ship energy consumption is reduced, the whole ship efficiency is improved. The system is provided with a hoisting motor and is suitable for specific large ships.

The invention relates to a multi-modal phase-change thermal balance system for a lithium battery pack of an electric vehicle. The multi-modal phase-change thermal balance system comprises a gas liquid phase-change heat conducting channel comprising a gas liquid phase-change material; the gas liquid phase-change heat conducting channel comprises at least one extension channel and column cylinders for accommodating lithium cells; the hollow wall bodies of all column cylinders are connected with the extension channel; the outer side wall of each lithium cell is suitable for being in tight fit with the inner wall of the corresponding column cylinder, or the outer side wall is filled with heat conducting adhesive for heat transfer; the peripheral outer sides of respective column cylinders are filled with at least three groups of solid liquid phase-change energy storage bodies respectively; the solid liquid phase-change energy storage bodies in different groups comprise solid liquid phase-change materials at different working temperature sections; when the temperatures of the lithium cells are increased, energy can be absorbed and stored to delay the rate of temperature increasing of the lithium cells; and when the temperatures of the lithium cells are lowered, the pre-stored heat can be released to delay the cooling speed of the lithium cells, so that the lithium cells can be maintained within the set working temperature range for a longer time.

The invention relates to a heat exchanger comprising a combustion chamber, a high-temperature smoke delivery pipe, multiple jacketed pipes and a condensation smoke discharge pipe. The high-temperaturesmoke delivery pipe, the multiple jacketed pipes and the condensation smoke discharge pipe are arranged in the circumferential direction of the combustion chamber. The combustion chamber communicateswith the high-temperature smoke delivery pipe. The multiple jacketed pipes sequentially communicate. Each jacketed pipe comprises an inner pipe, an outer pipe arranged outside the inner pipe in a sleeving manner, and an end cover. The high-temperature smoke delivery pipe communicates with one jacketed pipe, and the condensation smoke discharge pipe communicates with another jacketed pipe. By means of the heat exchanger, the heat exchange efficiency can be improved, the ignition success rate can be ensured, the structure is reasonably distributed, the device space occupation rate is decreased,and the device economy is improved.

The invention aims to provide a double-host and double-motor ship ammonia-electricity hybrid power system with a battery thermal management function. The system comprises an ammonia fuel engine, a diesel engine, reversible motors, diesel generator sets, a storage battery, a capacitor, propellers, a liquid ammonia storage and supply device, power transformation devices, a ship power grid and a whole ship cooling system; the diesel generator sets, the storage battery and the capacitor are connected with the ship power grid through frequency conversion devices; the ship power grid is connected with ship daily load and each reversible motor through the power transformation devices; the first reversible motor is connected with the ammonia fuel engine through a belt crankshaft; the first reversible motor and the second reversible motor are respectively connected with the diesel engine and the ammonia fuel engine through clutches and then drive the variable-pitch propeller through a gear box;and the third reversible motor and the fourth reversible motor directly drive the fixed-pitch propellers. Hybrid propulsion of the ammonia fuel engine, the diesel engine and the motors and multi-stage utilization of cold energy of an energy storage unit and the engines can be achieved.