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1188 results about "Intercooler" patented technology

An intercooler is a mechanical device used to cool a gas after compression process. Compression process increases the internal energy of the gas which in turn raises its temperature and reduces the density. In other words intercooler is a device used in compression process, typically a heat exchanger that removes waste heat in a gas compressor. They are used in many applications, including air compressors, air conditioners, refrigeration, and gas turbines, and automotive engines. Here they are widely known as an air-to-air or air-to-liquid cooler for forced induction (turbocharged or supercharged) internal combustion engines to improve their volumetric efficiency, which they do by increasing intake air density through nearly constant pressure cooling. First introduced in 1977 on the Porsche 911, although these were the first cars to use intercoolers they were not the first cars to use turbochargers; in fact they weren’t even the first 911’s to use turbochargers.

Two-stage expansion jet type waste heat recovery system of internal combustion engine

ActiveCN103670626AImprove the efficiency of waste heat recoveryReduce outlet back pressureInternal combustion piston enginesExhaust apparatusIntercoolerEvaporator
The invention discloses a two-stage expansion jet type waste heat recovery system of an internal combustion engine. According to the scheme, an ORC main circulating system is formed by sequentially connecting a condenser, a lower-pressure working medium pump, a high-pressure working medium pump, a high-temperature preheater, a high-temperature intercooler, a high-temperature flue gas heat exchanger, a first expansion machine, a jet pipe and a second expansion machine in series. A low-temperature intercooler, a low-temperature evaporator and a low-temperature flue gas heat exchanger are sequentially connected between the high-pressure working medium pump and the jet pipe and between the low-pressure working medium pump and the jet pipe, so that the ORC main circulating system is divided into a high-temperature stage branch and a low-temperature stage branch. Cooling water of a cylinder sleeve of the internal combustion engine is connected to the water side of the high-temperature preheater and the water side of the low-temperature evaporator and then returns to the cylinder sleeve. Intake air of the internal combustion engine enters the internal combustion engine by sequentially passing the air side of a gas compressor in a turbocharger, the air side of the high-temperature intercooler and the air side of the low-temperature intercooler. Exhaust gas of the internal combustion engine is connected to a turbine of the turbocharger, the high-temperature flue gas heat exchanger and a reheater in sequence. Waste heat of each part of the internal combustion engine waste heat recovery system can be utilized according to the quality ladder of the waste heat so that efficiency of the internal combustion engine waste heat recovery system can be improved obviously.
Owner:TIANJIN UNIV

High-altitude and low-pressure characteristic simulation test station of air compressor in internal-combustion engine

The invention discloses a high-altitude and low-pressure characteristic simulation test station of an air compressor in an internal-combustion engine, relating to a characteristic simulation test station of an air compressor in an internal-combustion engine, and comprising an air pipeline system and a lubricating system, wherein the air pipeline system comprises a vacuum pump, a pressure stabilizing box, and an air filter, a flow testing section, an air inlet parameter testing section, a flow stabilizing section and an air compressor sequentially connected with an outlet of the pressure stabilizing box, and an air exhaust parameter testing section, a back pressure regulating valve, a stopping valve and an air exhaust intercooler sequentially connected with an outlet of the air compressor;the lubricating system comprises an oil tank, an oil supplying system and a lubricant intercooler; an outlet of the air exhaust intercooler is connected with the pressure stabilizing box so that an air pipeline of the test station forms a sealed air circulation system; and the oil tank is arranged inside the pressure stabilizing box so as to improve the sealing property of the test station. The test station can simulate the environmental pressure at the altitude of 0-30,000 meters and performs the high-altitude simulation characteristic test of the air compressor in the turbo-charged internal-combustion engine, therefore, the sealing property and simulated altitude of the test station are higher than those of the existing simulation test station of the same type.
Owner:TSINGHUA UNIV

Diesel altitude-variable self-adapting supercharging control method and system

The invention discloses a method and a system for controlling a variable-altitude self-adapting supercharging for a diesel engine, relating to the technical field of supercharging control for a diesel engine, which is characterized in that an optimal supercharging pressure MAP is inquired to obtain the optimal supercharging pressure under the working condition of a stable state according to an inlet pressure signal of an air compressor, a rotating speed signal of an engine and a position signal of a gasoline throttle, the opening of a nozzle ring of a turbine is controlled by using a PI controller according to the difference value between the optimal supercharging pressure and the actual supercharging pressure to obtain an optimal circulating section; an optimal opening MAP of the nozzle ring is inquired to obtain the optimal opening of the nozzle ring under the working condition of a transient state according to the rotating speed signal of the engine and the inlet pressure signal of the air compressor so as to control the optimal circulating section. The system comprises a diesel engine, an intercooler, a variable-section supercharger consisting of an air compressor and a variable-section turbine, an electronic control unit, a pressure sensor and a temperature sensor etc. The method and system can adapt to the altitude variation and adjust the circulating section of the variable-section turbine so that the diesel engine has optimal dynamic property and fuel economy at each altitude.
Owner:TSINGHUA UNIV

High-capacity compressed air energy storage efficient power generating system

InactiveCN103410616AIncrease generating capacityHigh secondary frequency modulation capabilityPump componentsBiofuelsIntercoolerEngineering
The invention belongs to the field of high-capacity industrial energy storage, and particularly relates to a high-capacity compressed air energy storage efficient power generating system. A power generating electromotor is respectively connected with a plurality of air compressors as well as a high-pressure turbine and a low-medium-pressure turbine coaxially through clutches; intercoolers are connected among the air compressors; the last air compressor is connected with a cooler; an air pipeline of the cooler is connected with an air storage chamber; the intercoolers and a hot flow pipeline of the cooler are connected with the hot flow side of a heat storage device; the air storage chamber is respectively connected with the inlets of the air sides of the heat storage device and a heat regenerator; the air sides of the heat storage device and the heat regenerator are sequentially connected with a combustor and the high-pressure turbine; a regenerator is connected between the high-pressure turbine and the low-medium-pressure turbine; the outlet of the low-medium-pressure turbine is connected with the smoke side of the heat regenerator. The system can absorb unstable power load generated by renewable energy sources on a large scale, also can absorb the residual electric power when the power grid load is at a low ebb, and releases the stored energy at the electricity consumption peak so as to meet the requirement of the power grid pitch peak.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Indirect air cooling method and system for working medium adopting parallel-connection positive and reverse refrigeration cycle

The invention discloses an indirect air cooling method and a system with the working fluid of parallel-connected obverse and inverse refrigeration cycles. Based on the phase transition in the working fluid cooling process, a double-phase transition heat exchanger and a single-phase transition heat exchanger are respectively coupled with an obverse refrigeration cycle and an inverse refrigeration cycle which are connected in parallel; the saturated gaseous refrigerant from the phase-transition heat exchangers is compressed, boosted and then sent to an air-cooled radiator for exothermic condensation, then the condensed refrigerant enters a liquid storage tank and is decompressed through a throttle valve and sent to the phase-transition heat exchangers so as to complete the obverse refrigeration cycle; or the saturated gaseous refrigerant from the phase-transition heat exchangers is throttled and decompressed through a thermal expansion valve and then sent to the air-cooled radiator and the liquid storage tank, pressurized by a booster pump and finally sent back to the phase-transition heat exchangers so as to complete the inverse refrigeration cycle. The method and the system can be widely applied to the cooling systems of the condensers in thermal power, nuclear power and other turbine-generator units or the cooling systems of the intercoolers in petroleum, chemical and other industries to reduce energy consumption, save investments, as well as improve water-saving rate and the adaptability of the cooling system to the environment; therefore, the method and the system are provided with promotional values and can produce larger social environmental benefits and economic benefits after implementation.
Owner:NORTHEAST DIANLI UNIVERSITY

Solar thermal utilization system combined with gas-steam combined cycle

The invention discloses a solar thermal utilization system combined with gas-steam combined cycle, which comprises a solar condensation heat collection subsystem, a refrigeration subsystem, a heat exchange device, a heat storage device and a gas-steam combined cycle power subsystem, wherein solar radiation energy is transformed into heat energy; a heat carrier preheats air and fuel which are used by the gas-steam combined cycle power subsystem through the heat exchange device; and then the heat carrier after the heat exchange drives the refrigeration subsystem for refrigeration to reduce the temperature of the air in an intercooler. The system gradiently utilizes the heat energy provided by the solar condensation heat collection subsystem, solves the problem of low utilization rate of solar energy, and also solves the problem of low temperature of the air at an outlet of an air compressor with multi-stage compression and intermediate cooling; and the system reduces the power consumption of the air compressor on the basis of ensuring the temperature of the air which enters a combustion chamber, improves the power generation efficiency of the gas-steam combined cycle, and achieves the aims of energy conservation and consumption reduction.
Owner:CHINA HUADIAN ENG +3
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