53results about How to "Increase cooling temperature" patented technology

In a motor vehicle of the invention, when an intake air temperature Ta is not lower than a preset reference temperature Tref, warm-up drive control selectively uses an evaporated fuel processing acceleration operation curve, which gives a high level of a negative pressure in an intake manifold, to set a target drive point of an engine and controls the operation of the engine. This ensures good emission of the engine. When the intake air temperature Ta is lower than the preset reference temperature Tref and when the setting of a heating demand Hq requires heating, on the other hand, the warm-up drive control increases an EGR quantity from an ordinary level and switches over an operation mode of a cooling system for the engine to a warm-up circulation mode for making the flow of a cooling medium bypass a radiator. This introduces a greater amount of heat of exhaust into a heat exchanger to enable quick supply of the warm air to a passenger compartment. The warm-up drive control selectively uses a negative pressure reduction operation curve, which gives a lower level of the negative pressure in the intake manifold than the level of the negative pressure set on the evaporated fuel processing acceleration operation curve, to set the target drive point of the engine and controls the operation of the engine. This enhances the operation efficiency of the engine and improves the fuel economy during the warm-up time of the engine.

The invention relates to an air-conditioning and seawater desalination joint operation system which comprises a lithium bromide solution circulating water yielding system and a sea water evaporation and air processing system. The lithium bromide solution circulating water yielding system comprises: a generation condenser, a heat exchanger, an absorption evaporator, a circulating pump and a regulating valve group; wherein, the generation condenser comprises a generator and a condenser, and a water retaining device is connected between the generator and the condenser. The sea water evaporation and air processing system comprises: the absorption evaporator, a sea water spray chamber, a pre-heater, a regulating valve, a throttle valve and a valve group; wherein, the absorption evaporator comprises an absorber and an evaporator, and the water retaining device is connected between the absorber and the evaporator. The air-conditioning and seawater desalination joint operation system of the invention has the functions of air-conditioning and sea water desalination, simplifies the two separate separation systems of the prior air-conditioning system and the sea water desalination circulating system and effectively saves the energy.

A hybrid vehicle (100) can be driven using both of respective driving forces from an engine (10) and a motor (80). A heating mechanism (120) of an air conditioning apparatus (110) uses thermal energy from cooling water of the engine (10) to heat the interior of a passenger compartment. An ECU (90) takes into consideration engine efficiency from the standpoint of fuel economy enhancement to primarily determine the driving force share ratio between the engine (10) and the motor (80). Further, the ECU (90) calculates a preset temperature corresponding to a cooling water temperature necessary for desired heating as well as a control target temperature in which the preset temperature is reflected, and corrects the primarily determined driving force share ratio to increase the share of the driving force of the engine by an amount according to a deviation between the cooling water temperature (Tw) measured by a water temperature sensor (98) and the control target temperature. Heating performance can thus be ensured promptly without deterioration of fuel economy.

The invention discloses a low-grade heat energy auxiliary-drive composite low-temperature refrigerating system. The system comprises a generator, an ejector, a working medium pump, a condenser, a gas-liquid separator, a compressor, a first throttling component, a condensation evaporator, a second throttling component, an evaporator and a heater. A high-boiling-point component is condensed into liquid to serve as a low-boiling-point component cooling medium through the ejector driven by the low-grade heat energy; and the ejector has another function of increasing suction pressure of the low-boiling-point component at a suction port of the compressor to reduce the compression ratio of the compressor so as to realize lower refrigerating temperature. Because the compression process of the high-boiling-point component during circulation is finished by the ejector, the power consumption of the compressor is reduced; and the ejector also improves the suction pressure of the low-boiling-point component at the suction port of the compressor and is also favorable for further reducing the power consumption of the compressor. The system has the advantages of realizing high-efficiency utilization of a low-grade energy source, along with stable running, obvious energy saving effect and broad application prospect.

The invention provides a production method of a high-strength saw bit steel coil. The production method is suitable for a rolled steel coil of saw bit or saw blade steel with the thickness of 3.0-14.0mm. The component design comprises 0.49-0.52 of C, 0.2-0.35 of Si, 1.45-1.60 of Mn, less than or equal to 0.015 of P, less than or equal to 0.005 of S, 0.2-0.25 of Cr, 0.12-0.16 of V, 0.020-0.025 of Al and less than or equal to 0.006 of N by weight percent. The production process adopts a converter smelting-LF (ladle furnace) refining-hot continuous rolling process and comprises slab continuous casting and segregation control in saw bit steel production, control of the slab continuous offline slow cooling temperature of the saw bit steel and the control of the roll rolling start temperature, the rolling finished temperature and the coiling temperature. The horizontal yield of the saw bit steel coil is MPa600-750, the horizontal tensile strength is MPa930-1040, the elongation is 19.5-26%, and the hardness of HRC is 20-28.

The invention discloses an air conditioner and a control method thereof, and relates to the technical field of air conditioners. The air conditioner comprises a first heat exchanger, a humidifying film part, a second heat exchanger, a compressor, a four-way valve, a third heat exchanger and a first throttling part, wherein the compressor, the four-way valve, the third heat exchanger, the first throttling part, the first heat exchanger and the second heat exchanger are connected in sequence to form a heat exchange loop; and the humidifying film part is arranged between the first heat exchanger and the second heat exchanger. By arranging modes of the two heat exchangers at an indoor unit side simultaneously, heating or refrigerating can be realized at the same time, so that the heating temperature or the refrigerating temperature of the air conditioner can be conveniently improved, and the comfort of the air conditioner in the heating or refrigerating process can be improved; and in addition, the humidifying film part is arranged between the first heat exchanger and the second heat exchanger, so that preheating, humidifying and heating are realized, the air outlet temperature is controlled while the humidifying amount is effectively improved, so that the using comfort of the air conditioner is improved.

The invention provides a supercritical carbon dioxide power generation system and method based on natural gas waste heat recovery. The supercritical carbon dioxide power generation system comprises anair separation device, a combustor, a carbon dioxide turbine, a heat regenerator, a water separator, a first carbon dioxide pressurization device, a carbon dioxide recovery device, a waste-heat-recovery heat exchanger, a Kalina turbine, a Kalina heat regenerator, a first mixer, an ammonia separator, a second mixer, a high-pressure condenser and a gas-liquid separator. According to the supercritical carbon dioxide power generation system, natural gas is taken as fuel, and the full capture of carbon dioxide is achieved by adopting an oxygen-enriched combustion method; in the carbon dioxide turbine, carbon dioxide expands to the subcritical state and achieves a higher expansion ratio than that the supercritical carbon dioxide Brayton cycle, so that the carbon dioxide turbine can do more workand the cycle efficiency can be improved; and during the bottom cycle, waste heat of the supercritical carbon dioxide cycle is recovered by adopting the Kalina cycle, and the concentration of a working medium changes in the working medium phase-change non-isothermal process and cycle process, so that the vaporization process and the heat-source heat release process can be matched well, the irreversible loss in the heat exchange process can be reduced, and the waste heat utilization efficiency can be improved.

The invention discloses a combined-driven metal hydride heat pump system. The heat pump system comprises a low-temperature reactor, a four-way control valve, a compressor, a high-temperature reactor and a valve, wherein a low-temperature reactor hydrogen interface III of the low-temperature reactor is connected with a four-way control valve hydrogen interface I of the four-way control valve, a four-way control valve hydrogen interface II of the four-way control valve is connected with a compressor hydrogen inlet of the compressor, a compressor hydrogen outlet of the compressor is connected with a four-way control valve hydrogen interface III of the four-way control valve, a four-way control valve hydrogen interface IV of the four-way control valve is connected with a high-temperature reactor hydrogen interface III of the high-temperature reactor, a high-temperature reactor hydrogen interface IV of the high-temperature reactor is connected with a low-temperature reactor hydrogen interface IV of the low-temperature reactor through the valve, and the low-temperature reactor and the high-temperature reactor contain different metal hydride respectively.

An ultralow temperature refrigerator (R) using a mixed refrigerant containing a plurality of kinds of refrigerants having different boiling points. The refrigerator comprises a main refrigerant circuit (38) provided with a criocoil and a capillary tube (29) and a sub-refrigerant circuit (39) the upstream end of which is branched and connected to the upstream end of the main refrigerant circuit (38) and which is provided with a capillary tube (28). In order to ensure the flow of the liquid refrigerant for a supercooler (31) and to enhance the cooling eficiiency of the criocoil (32), the height of the sub-refrigerant circuit (39) is less than the height of the main refrigerant circuit (38). The flow of the refrigerant in a gas-liquid mixed state discharged from the primary side (31a) of the supercooler (31) and flowing into the sub-refrigerant circuit (39) is greater than the flow into the main refrigerant circuit (38), so that the flow of the liquid refrigerant into the sub-refrigerant circuit (39) is increased more than the flow into the main refrigerant circuit (38).

The invention provides a coal gasification supercritical carbon dioxide power generation system and method capable of realizing waste heat recovery. The system comprises an air separating device, a burner, a carbon dioxide turbine, a heat regenerator, a water separator, a first carbon dioxide supercharging device, a carbon dioxide recovery device, a waste heat recovery device, a coal gasificationdevice, a Kalina turbine, a Kalina heat regenerator, a first mixer, an ammonia separator, a second mixer, a high-pressure condenser and a gas-liquid separator. According to the system, coal gas is used as fuel, and total capture of carbon dioxide is realized through oxygen-enriched combustion; the carbon dioxide expands to the subcritical state in the turbine, and the expansion ratio is higher than that of supercritical carbon dioxide Brayton cycle, so that the turbine works more, and the cycle efficiency is improved; supercritical carbon dioxide cycle waste heat is recovered through Kalina cycle during bottom cycle, by the aid of change of the working medium concentration in the non-isothermal process and the cyclic process of the working medium phase change, the gasification process andthe heat release process of a heat source are well matched, the irreversible loss of the heat exchange process is reduced, and the waste heat utilization efficiency is improved.

The invention belongs to the field of disinfection, epidemic prevention and healthy air, and particularly relates to a nano water ion group generator. The generator comprises at least one pair of P/N type semiconductor crystal grains, wherein the paired P/N type semiconductor crystal grains are composed of P type semiconductor crystal grains and N type semiconductor crystal grains, one end of each P/N type semiconductor crystal grain is a refrigeration end, and the other end of each P/N type semiconductor crystal grain is a heating end; a heat absorption piece which is used for obtaining the cold energy generated by the refrigeration end and transmitting the cold energy to the blocking piece; a blocking piece which is used for conducting the cooling capacity obtained by the heat absorption piece so as to obtain condensate water or air with high relative humidity; an ionization piece which is arranged on one side of the blocking piece to absorb, gather or accumulate moisture in cold energy, condensate water or high-relative-humidity air, is electrically coupled to the high-voltage power supply and is used for loading a high-voltage electric field so as to ionize air and moisture around the ionization piece under the action of an electron avalanche effect, and obtain at least one nano-particle-size substance of charged particles and oxygen-containing free radicals.

The invention discloses an annealing method for improving laser output power of Nd3+:YAG crystal. The annealing method comprises the following steps of 1, putting an Nd3+:YAG crystal bar into a vacuum annealing furnace, and vacuumizing the vacuum annealing furnace to 0.08MPa by a vacuum pump; 2, opening an air inflation device, supplying a mixture gas of nitrogen and oxygen into the vacuum annealing furnace by a vacuum pipe, and maintaining the air pressure in the vacuum annealing furnace to 0MPa; 3, after the step 2 is finished, increasing the temperature in the vacuum annealing furnace to 1250-1300 DEG C; 4, maintaining the temperature in the vacuum annealing furnace to 1250-1300 DEG C; 5, after the step 4 is completed, lowering the temperature in the vacuum annealing furnace to 800 DEG C, and naturally cooling to the room temperature along with the furnace. Theannealing method has the advantages that by changing the annealing atmosphere, the constant temperature and the constant-temperature yearly hour are improved, so that the laser output power of the Nd3+:YAG crystal is greatly improved; compared with similar types of existing products, the laser output power is improved by 10-15%.

This invention involves the technological field of working medium of heating, the working medium additive of affiliated heating, it is the association thing made of raw materials of the following matching of manner of weight; calcium chloride 5-9, chlorine magnesium 12-15, antiseptic 0.01-0.05; Stated heating working medium that additive prepare is according to weight manner mixture that raw materials make of matching; calcium chloride 5-9, chlorine magnesium 12-15, antiseptic 0.01-0.05, water 14-20. Stated heating working medium preparation method, according to the raw materials of the matching of manner of weight: calcium chloride 5-9, chlorine magnesium 12-15, antiseptic 0.01-0.05, water mixes and makes heating working medium by 14-20, the working medium thermal efficiency of above-mentioned heating is high, economize the energy, lighten pollution, is suitable for the heating in winter.

The invention discloses a calcium carbonate preparation method for accelerating a carbonatation reaction and belongs to the technical field of calcium carbonate powder preparation. The calcium carbonate preparation method for accelerating the carbonatation reaction comprises the steps that the inner wall of a carbonatation reaction kettle is coated with a carbon dioxide gas adsorption material, and after the coating material fixed on the inner wall of the reaction kettle, by using the reaction kettle which is improved through coating, the carbonatation reaction is conducted to prepare precipitated calcium carbonate. According to the calcium carbonate preparation method, the problems are solved that in the prior art, prepared calcium carbonate is long in reaction time and uneven and unstable in product quality.

The invention discloses an isoworking medium and same working medium gas compression acting device. The isoworking medium and same working medium gas compression acting device comprises a first actingcomponent, a first condenser and a first evaporator, wherein the first condenser is connected with an outlet of the first acting component, and the first evaporator is connected with an outlet of thefirst condenser; a refrigerating system comprises a compressor, a second condenser and a second evaporator, wherein the second condenser is connected with an outlet of the compressor, and the secondevaporator is connected with an outlet of the second condenser; a heating area is formed between the outlet of the compressor and the second condenser; and the heating area exchanges heat with the first evaporator, the second evaporator exchanges heat with the first condenser, the boiling point of a working medium in an acting system is lower than that of the working medium in the refrigerating system, and the working medium of the acting system can be condensed by the working medium of the refrigerating system. The isoworking medium and same working medium gas compression acting device has the technical effect of effectively utilizing the low temperature.

The invention provides a carbon dioxide full gathering type supercritical carbon dioxide power generation system and method. The system comprises an air separation device, a combustor, a turbine and agas circulation system, wherein air enters the air separation device for gas separation, oxygen separated from the air enters the combustor through an outlet of the air separation device and burns with natural gas in the combustor, and high-temperature supercritical carbon dioxide is generated and enters the turbine through an outlet of the combustor to do work for power generation; and gas exhausted from the turbine enters the combustor through a gas circulation system again. Through the structure, the efficiency of conversion of heat into power can be substantially improved, the equipment size is decreased, and the quite high economical efficiency is achieved.

An inter-section scale inhibition method for a centrifugal natural gas compressor set includes a method a, a method b or a method c. A heat exchanger is additionally arranged at the position between an inter-section separator outlet to a next section first stage impeller inlet, an outlet pipeline at the back of a scaling section of the centrifugal natural gas compressor set is connected with an inlet of the additionally arranged heat exchanger, an outlet of the additionally arranged heat exchanger is connected with an inlet of a cooler through a pipeline, an outlet of the cooler is connected with an inlet of a separator, an outlet of the separator is connected with an inlet of a heat exchange coil pipe arranged in the heat exchanger, and an outlet of the heat exchange coil pipe is connected with an inlet of a scaling section first stage impeller. High-temperature natural gases at an outlet behind the scaling section and low-temperature natural gases emitted from the separator are exchanged, and temperature at the separator outlet after heat exchange compensates external temperature loss and is higher than the critical temperature for generating the water dew point and the hydrocarbon dew point.

The invention discloses a double-evaporation-temperature injection refrigerating machine and method based on a mixed working medium. The refrigerating machine comprises a first throttling valve, a second throttling valve, a high-temperature evaporator, a low-temperature evaporator, an injector, an air-cooled condenser, a gas-liquid separator, a water-cooled condenser, a generator and a circulating pump; the generator, the ejector, the air-cooled condenser, the gas-liquid separator and the circulating pump form a power cycle; the ejector, the air-cooled condenser, the gas-liquid separator, the first throttling valve and the high-temperature evaporator form a first refrigeration cycle, and high refrigeration temperature is achieved; and the ejector, the air-cooled condenser, the gas-liquid separator, the water-cooled condenser, the second throttling valve and the low-temperature evaporator form a second refrigeration cycle, and low refrigeration temperature is achieved. A non-azeotropic mixed working medium is adopted, the ejection compression ratio of the ejector is reduced, the ejection coefficient of the ejector is improved, meanwhile, a low evaporation refrigeration temperature and a high evaporation refrigeration temperature are achieved, and the overall refrigeration coefficient of the device is improved.

The invention provides a material transmission device which comprises a conveying cylinder and a cooling tube, wherein a packing auger connected with a motor is arranged inside the conveying cylinder; the conveying cylinder is sleeved by the cooling tube; the cooling tube can rotate along the conveying cylinder; the cavity of the cooling tube is divided into a plurality of cooling spaces; water inlets are formed in the top of the cooling tube; water outlets are formed in the bottom of the cooling tube; the water outlets of the cooling tube are connected with the water inlet of a heat radiator through water tubes; the water outlet of the heat radiator is connected with the water inlets in the cooling tube. A high-temperature material is cooled through the cooling tube in the conveying process, the material can be prevented from fire caused by too high temperature, and the material transmission device has the advantages of being simple in structure, high in working efficiency, long in service life, low in cost and the like.

The invention discloses a sub-mN superconductive plane suspension type vacuum attitude and orbit control test system, which specifically comprises a superconductive translation magnetic suspension system, a dual-mode motion measurement device and an ultralow-temperature refrigeration system, and realizes a large-area low-damping translation suspension method based on complete diamagnetism of a superconductor under zero-field cooling. A superconductive fence structure is introduced to inhibit the fringe effect of a superconductive plane, and more than 80% of an effective translation area is realized; in order to achieve a high-suspension air gap exceeding 10 mm, the superconductive temperature of the ultralow-temperature refrigerating system is required to be lower than 5 K; in order to realize sub-mN level translation resistance, the low-temperature uniformity of a superconducting plane is required to be superior to 0.5 K, the mounting planeness is required to be superior to 0.5 mm, and the magnetic field uniformity of a circular ring magnetic structure below a permanent magnetic levitation platform is controlled to be 1% or less; in order to measure the [mu]N-level micro force, a combined measurement mode of circumferential distribution of four precision nm-level displacement sensors is adopted; and in order to evaluate the large-range motion control capability of the micro-thruster, binocular vision is adopted to collect motion trails.