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617results about How to "Reduce heat loss" patented technology

Manufacturing method of GaInP/GaAs/InGaAsP/InGaAs four-junction solar battery

InactiveCN101950774AReduce heat lossAchieve absorptionFinal product manufactureSemiconductor devicesBand gapCell material
The invention discloses a manufacturing method of a GaInP/GaAs/InGaAsP/InGaAs four-junction solar battery. By utilizing a wafer bonding method, the GaInP/GaAs/InGaAsP/InGaAs four-junction solar battery is integrated by a GaInP/GaAs double-junction solar battery growing based on a GaAs substrate and a InGaAsP/InGaAs double-junction solar battery growing based on an InP substrate; by utilizing the InP as a supporting substrate, the four-junction solar battery with respective band gap energies of 1.9/1.4/1.05/0.72 eV is realized, sunlight full spectral absorption and energy conversion are realized to a greater degree, and 32.8 percent of efficiency is realized in irradiation of AM1.5G and under the sun. Based on the development of two kinds of double-junction batteries, the bonded four-junction solar battery reduces the shortages of high cost caused by utilizing a plurality of different substrates in a mechanical cascade solar battery system and complex optical system and optical loss in an optical integrated battery, and effectively solves the problem of lattice mismatching of growing a uniwafer four-junction cascade semiconductor solar battery material. The high voltage and low current outputs are realized and the resistance consumption in a high concentrator battery is reduced.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI

Continuous-casting and continuous-rolling integrating device and process

The invention relates to a continuous-casting and continuous-rolling integrating device and a continuous-casting and continuous-rolling integrating process. An ejection roller way in an ejection roller way ejection area and a transition roller way are linearly and continuously jointed and a moveable baffle plate which can automatically lift is arranged at the joint; the ejection roller way and a heat conveying roller way are jointed through a casting blank separating device with a heat-preserving device; a set of blank-separating collecting device which can move bi-directionally is jointly used between a cooling bed and the transition roller way as well as between the transition roller way and the heat conveying roller way and can drive casting blanks to bi-directionally move between the cooling bed and the transition roller way; a heater is arranged on the heat conveying roller way; the tail end of the heat conveying roller way is jointed with a rolling machine. According to heat conveying and rolling requirements, the casting blanks are selected, separated and collected, according to casting blank temperature data which is detected in real time, the heating temperature and the heating time are automatically adjusted, the casting blanks are heated to the temperature meeting the rolling requirement and are fed into the rolling machine to be rolled, the metal yield can be increased, the continuous-casting blank quality can be improved, the energy consumption can be reduced, the utilization efficiency, the maintenance rate and the production efficiency of equipment are improved, and the investment cost and the operation cost are reduced.
Owner:HUBEI CENT STEEL UNION METALLURGICAL ENG

Model for optimally controlling heating system of large walking beam type heating furnace plate blank

ActiveCN101806541AIncrease furnace temperatureReduce heat lossFurnace typesHeating timeHeating system
The invention relates to a model for optimally controlling a heating system of a large walking beam type heating furnace plate blank, which belongs to the technical field of industrial heating. A billet steel heating system optimizing model is adopted to optimize the order of entering the furnace for the billet steel of different steel type; the billet steel heating time and the temperature of each segment of the heating furnace are optimized; and the temperature change of the billet steel in the heating process is predicted. The model consists of a temperature control module of a single steel type of billet steel, and a heating optimal control module of multiple steel types of billet steel, wherein one module aims at simulating the heating process of a signal block of billet steel, and the other module aims at simulating the heating process under the condition of 10 blocks of billet steel entering the furnace, i.e. mixed loading furnace entering condition. The model is adopted to optimize the heating system of the billet steel so as to avoid the overhigh heating temperature of the billet steel and reduce the oxidation burning loss of the billet steel; reasonable heating time can be adopted to reduce unnecessary fuel waste and fuel consumption; and the model is conducive to scientifically and reasonably regulate the operation parameters of the heating furnace and meet the requirements on billet steel heating quality.
Owner:SHOUGANG CORPORATION

Defrosting control method for air conditioner

The invention provides a defrosting control method for an air conditioner. The air conditioner comprises a compressor, a first four-way valve, an indoor heat exchanger, a throttling device, an outdoor heat exchanger, a refrigerant pipeline, a second four-way valve, an electromagnetic valve and a heat storage device. When the air conditioner is in heating operation, the first four-way valve and the second four-way valve are both converted into a heating mode, a heat storage mode for the heat storage device is controlled to be started and stopped by controlling the on-off state of the electromagnetic valve, and heat stored by the heat storage device is used for achieving a heat source provided when heating and defrosting are simultaneously conducted. When the air conditioner is in defrosting operation, the first four-way valve is kept in the heating mode, the second four-way valve is converted into a refrigerating mode, the electromagnetic valve is opened, refrigerant gas sprayed by the compressor is divided into two branches, the refrigerant gas exhausted by the compressor simultaneously flows to the indoor heat exchanger and the outdoor heat exchanger, in the defrosting process, refrigerant simultaneously flows to the indoor heat exchanger and the outdoor heat exchanger, certain heat exists on the indoor side, cold radiation is not generated, and user comfort is greatly improved.
Owner:GREE ELECTRIC APPLIANCES INC

Pressure-bearing type solar collector based on groove-type parabolic mirror

The invention relates to a pressure-bearing type solar collector based on a groove-type parabolic mirror. The parabolic mirror is characterized by comprising an elliptical reflecting canister, a housing, a groove-type parabolic condenser and a pressure resistant metallic heat collection pipe group, wherein the reflecting canister adopts an elliptical stainless steel mirror reflecting canister or a glass reflecting canister; a light inlet is formed in the elliptical reflecting canister; the housing is arranged outside the reflecting canister; a gap between the housing and the reflecting canister is filled with heat insulating materials; the pressure resistant metallic heat collection pipe penetrates the reflecting canister; and the light condensation focus of the groove-type parabolic condenser is positioned at one focus near or around one side of the light entrance port. According to the solar collector provided by the invention, the heat absorbing medium is positioned in the pressure resistant metallic heat collection pipe groups in the black body cavity, so as to enable the whole heat-collector to manufacture the pressure-bear structure smoothly, the requirement of the process and material is decreased greatly, the manufacturing cost of the pressure-bearing type solar collector based on the groove-type parabolic mirror is decreased, the performance of the heat collector is more steady and reliable, and the safety coefficient is high.
Owner:SUNSHORE SOLAR ENERGY IND +2

Air conditioning controller special for curing tobacco and control method thereof

The invention relates to an air conditioning controller special for curing tobacco and a control method thereof. The special air conditioning controller for curing tobacco comprises a wire controller; the wire controller comprises an input unit and an MCU of the wire controller, which are connected; the MCU of the wire controller is respectively connected with a first display unit, a cured tobacco curve, a tobacco-curing recording memory unit, a spare power supply unit, a dry-bulb temperature and wet-bulb temperature detection unit, a load control interface unit, a heat pump system protective unit and a three-phase power fault tolerant unit; and the MCU of the wire controller receives a control instruction from the input unit so as to control the working states of a heat pump and an electric heating and dehumidifying device. The air conditioning controller utilizes the heat pump heating technology and a heat recovery device in the process of curing tobacco, can reduce the air pollution and save energy, can also improve the curing quality of the tobacco and reduce the working intensity of curing tobacco, control the dry-bulb temperature and the wet-bulb temperature in a curing room precisely and greatly improve the automation degree and the control precision.
Owner:GUANGDONG MIDEA ELECTRIC APPLIANCES CO LTD

Micro-combustor

The invention discloses a micro-combustor, which comprises a bluff body, two preheating channels and a combustion chamber, wherein the preheating channels and the combustion chamber are all plate-shaped; the cross section of the bluff body is triangular or circular; the bluff body is arranged at an inlet of the combustion chamber; the ratio of the width of the bluff body to the width of the combustion chamber is 0.3-0.6; the two preheating channels are both L-shaped and are respectively arranged at upper and lower sides of the combustion chamber; and outlets of the preheating channels are both communicated with the inlet of the combustion chamber. By using the micro-combustor, the defect of the prior art is overcome. By preheating and catalyzing fuels and air (when a non-pre-mixing combustion mode is adopted) or the pre-mixture of the fuels and air (when a pre-mixing combustion mode is adopted), the energy used for igniting is lowered, the igniting delay time is shortened and the exhaust heat loss is reduced. Besides, a low-speed high-temperature recirculation region formed behind the bluff body is utilized to fully mix the fuels and air, prolong the gas retention time and stabilize the flame. The micro-combustor can be used for efficiently expanding the stable combustion limit and increasing the combustion efficiency and can be widely applied to various micro-power systems.
Owner:HUAZHONG UNIV OF SCI & TECH

Three-phase multi-material three-dimensional pressurized clash coal gasification device and process thereof

ActiveCN101760243AReduce water contentReduce heat lossGranular/pulverulent flues gasificationMulti materialCarbon dioxide
The invention discloses a three-phase multi-material three-dimensional pressurized clash coal gasification device and a process thereof, which comprises a coal slurry preparing and conveying mechanism, a dry coal powder preparing and conveying mechanism and a pressurized gasification mechanism, wherein the coal slurry preparing and conveying mechanism consists of a coal mill, a coal slurry groove, a high-pressure coal slurry pump and a high-pressure coal slurry pipeline; the dry coal powder preparing and conveying mechanism consists of a dry powder preparer, a dry powder storage groove, a screw-rod conveyer, a coal powder pipeline and a nozzle feeding bin; and the pressurized gasification mechanism comprises a combustion chamber and a quench chamber. A water-coal slurry nozzle and a dry coal powder nozzle are arranged on the combustion chamber and are respectively communicated with the interior of the combustion chamber; and the dry coal powder nozzle and the water-coal slurry nozzle are also connected with a high-pressure gas pipeline. The dry coal powder nozzle arranged at the top reduces the damages of the returned air current mixture to the vault and the blind-head firebricks, thereby improving the utilization rate of the equipment. The injection mode of the dry powder and the carbon dioxide at the top increases the content of carbon in the reactants, and the active ingredients in the coal gas are increased to 85% above, thereby improving the utilization ratio of the coal resource and reducing the discharge amount of carbon dioxide.
Owner:SHANDONG HUALU HENGSHENG CHEM IND

Grid connecting system of permanent magnet synchronous wind driven generator

The invention relates to a grid connecting system of a permanent magnet synchronous wind driven generator. The grid connecting system of the permanent magnet synchronous wind driven generator comprises a wind machine, a permanent magnet synchronous generator, a generator side converter, a direct current booster module, a power grid side converter, an energy storage module and a control module. The wind machine, the permanent magnet synchronous generator, the generator side converter, the direct current booster module and the power grid side converter are connected in sequence, a first capacitor is connected between the generator side converter and the direct current booster module in parallel, a second capacitor is connected between the direct current booster module and the power grid side converter in parallel, the energy storage module is connected between the second capacitor and the power grid side converter in parallel, and the control module is respectively connected with the generator side converter, the direct current booster module, the power grid side converter and the energy storage module. Compared with the prior art, the grid connecting system of the permanent magnet synchronous wind driven generator adopts a high-frequency transformer to replace an original industrial frequency transformer to achieve high voltage grid connection, and adopts super-capacitors to store energy to enable the system to have good low-voltage operation performance.
Owner:TONGJI UNIV

Process method and apparatus for directly producing mineral wool from thermal state blast furnace slag

The invention relates to the production field of mineral wool, and particularly relates to a method and an apparatus for directly producing mineral wool from thermal state blast furnace slag. According to the apparatus for directly producing the mineral wool from the thermal state blast furnace slag, a slag ladle is disposed on a slag ladle vehicle; a stirring gas inlet is disposed at the bottom of the slag ladle; a slag ladle cover is provided with a material-feeding port, an exhaust port and a heating electrode; a tilting mechanism has a tempering station matched to the slag ladle and a homogenizing station matched to a homogenizing furnace; and the homogenizing furnace is communicated with a centrifugal wool-making machine through a melt flowing port. The process method for directly producing the mineral wool from the thermal state blast furnace slag comprises the steps of preparing the melt slag, tempering, homogenizing and making the wool. Mixed melt slag in the slag ladle is in no need of being transported to the homogenizing furnace, so that heat loss during the transportation process of the melt slag of the furnace is reduced; the homogenizing furnace makes the chemical components of the melt body more stable and uniform, so that the quality of the mineral wool fibers can be increased; and the process makes use of the heat energy of the melt slag, reduces cost for manufacturing mineral wool, and improves manufacturing environment of the mineral wool products.
Owner:BAOSHAN IRON & STEEL CO LTD

Balance control system and method for high-capacity serial connected battery packs

The invention relates to a balance control system combining electricity compensation with resistance dissipation in an energy storage system. The balance control system comprises battery packs, an electricity compensation balance control portion and a dissipation balance control portion. The balance scheme and the control mode include that each unit battery corresponds to an electricity compensation balance circuit, and the electricity compensation balance is started when the voltage of each unit battery is low; and simultaneously, each unit battery is connected in parallel with a dissipation resistor, and when the voltage of the individual battery is high during charging, dissipation control switches are started to enable the batteries to discharge through serial connected resistors, so that the battery packs and a compensation power supply are protected. Compared with a pure resistor dissipative balance scheme, the balance control system has the advantages that only the balance resistors of the individual batteries with high voltages work, so that the heat can be ignored, and heat management loads can be added. Energy of the compensation power supply is fully used, thermal losses are small, the energy conversion efficiency of a management system is improved greatly, a plurality of batteries can be balanced simultaneously, the balancing speed is increased, and the balancing time is shortened.
Owner:GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI

Asphalt pavement in-place hot recycling heating device

The invention discloses an asphalt pavement in-place hot recycling heating device. The asphalt pavement in-place hot recycling heating device comprises a traveling mechanism and a heating system used for heating an asphalt pavement, wherein the heating system comprises a hot air generator used for generating hot air and a heating chamber used for guiding the hot air to the asphalt pavement and then heating the asphalt pavement, the lower end of the heating chamber is open, the open end is buckled on the asphalt pavement to be closed, and the heating chamber and the hot air generator are communicated with each other through an air intake channel and an air return channel in a circulating manner. The asphalt pavement in-place hot recycling heating device provided by the invention can be used for recycling low-temperature hot air after heat energy transfer with the pavement, and compared with the prior art, the asphalt pavement in-place hot recycling heating device can improve the utilization ratio of heat energy, reduce the heat energy loss and environmental pollution, save energy, reduce the construction cost, and realize sufficient and effective heat energy transfer between the hot air and the asphalt pavement so as to improve the heating depth and temperature, reduce the fuel consumption, save the energy and reduce the construction cost under the condition of reaching the required heating depth and temperature.
Owner:CHONGQING JIAOTONG UNIVERSITY

Device for alternately decomposing water to make hydrogen by oxygen permeating membranes and hydrogen permeating membranes

The invention provides a device for alternately decomposing water to make hydrogen by oxygen permeating membranes and hydrogen permeating membranes. The device comprises a flat box body and inner pipelines, wherein the internal part of the flat box body is divided into a plurality of oxygen permeating chambers and hydrogen permeating chambers which are arranged at intervals; the inner pipelines extend inside all the oxygen permeating chamber and hydrogen permeating chamber; the inner pipelines of the adjacent chambers are connected with each other end to end through an outer pipeline; the inner pipelines and the outer pipeline form communicated serpentine steam channel; the inner pipelines in the oxygen permeating chambers are made of the oxygen permeating membranes; the inner pipelines in the hydrogen permeating chambers are made of the hydrogen permeating membranes; chemical potential difference exists between the inner and outer sides of the hydrogen permeating membranes of the inner pipelines in the hydrogen permeating chambers and chemical potential difference also exists between the inner and outer sides of the oxygen permeating membranes of the inner pipelines in the oxygen permeating chambers; and oxygen and hydrogen respectively enter the regions between the inner pipelines and the inner walls of the corresponding chambers through the oxygen permeating membranes and the hydrogen permeating membranes under the action of the chemical potential differences. According to the device, the steam channel is formed by alternate connection of the inner pipelines of the oxygen permeating membranes and the hydrogen permeating membranes, and the water vapor decomposition rate is much higher than that the situation of use of only oxygen permeating membranes or hydrogen permeating membranes.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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