275results about How to "Reduce power generation efficiency" patented technology

A wind power generator system including: a windmill rotor including a blade having a variable pitch angle; a generator driven by the windmill rotor; and a control unit controlling the output power of the generator and the pitch angle of the blade in response to the rotational speed of the windmill rotor or the generator. The control unit performs a first control in which the output power is controlled in accordance with a predetermined power-rotational speed curve until the rotational speed is increased to reach a predetermined rated rotational speed, and performs a second control in which the output power is controlled to a predetermined rated power when the rotational speed exceeds the rated rotational speed; the control unit is responsive to the pitch angle for maintaining a state of performing the second control is or for switching to a state of performing the first control, when the rotational speed is reduced below the rated rotational speed after the control unit is once placed into the state of performing the second control. This provides a wind power generator system which suppresses output power fluctuation and generation efficiency reduction when a transient wind null occurs.

In a power output apparatus of the invention, an engine EG1 is connected with a motor MG1 and is connected with an engine EG2 via a clutch C1. A driveshaft 65 is connected to the engine EG2 via a clutch C2 and is linked with a motor MG2. On a start or in a low speed range, the clutch C2 is set in an OFF position to disconnect the engine EG2 from the driveshaft 65, and the power output apparatus is driven only with the output power of the motor MG2. In an intermediate speed range, the clutch C2 is set in an ON position, and the power output apparatus is driven mainly with the output power of the engine EG2 that is driven with high efficiency. This arrangement enhances the total energy efficiency. The power output apparatus of the invention has a simple structure including the two clutches in addition to the two engines and the two motors.

This invention provides a solar battery sealing material, which facilitates the preparation of a solar battery module and is excellent, for example, in fabricability, insulating properties, noncorrosive properties, transparency, heat resistance, and flexibility, and a solar battery module prepared using the same. The solar battery sealing material comprises a crosslinkable resin composition (A) comprising an ethylene-(meth)acrylic ester copolymer as a base polymer, an organic peroxide and a crosslinking aid. The decomposition temperature (one-hr half-reduction period temperature) of the organic peroxide is 150 C or below. The total amount of the organic peroxide and the crosslinking aid incorporated is in the range of 0.5 to 5 parts by weight based on 100 parts by weight of the base polymer. The mixing weight ratio between the organic peroxide and the crosslinking aid (organic peroxide / crosslinking aid) is in the range of 1 / 5 to 1 / 0.1.

The invention discloses an improved heat integration coal-fired power plant decarbonization system and method, belonging to the technical field of energy conservation and emission reduction. The system mainly consists of two parts, namely a power plant steam turbine power generation unit and a CO2 capturing unit, wherein the two units are communicated through a cooler at the top of an analytic tower, a reboiler and a multi-stage compression cooled heat exchanger. According to the system, the low-pressure cylinder safety performance of the CO2 capture power plant is guaranteed; and meanwhile, due to the integration of the power plant steam turbine power generation unit and the CO2 capturing unit, the steam turbine power generation unit extracts steam and recovers the pressure energy through a small steam turbine, and the heat released by the CO2 capturing unit heats condensate water in the power plant through the cooler at the top of the analytic tower and the multi-stage compression cooled heat exchanger, so that the CO2 capture energy consumption is greatly reduced. According to the integration system, the safety operation of the CO2 capture power plant is guaranteed, the gradient energy utilization is realized, the CO2 emission can be effectively suppressed, the energy consumption of carbon emission reduction is reduced, and high energy utilization efficiency and technical and economic performance are obtained.

A small power generating system includes a turbine driven by a fluid, a small high-speed rotation power generator including a permanent magnet rotor having a permanent magnet and rotated together with the turbine and a plurality of stator coils each of which is comprised of a coreless coil, the rotor being rotated such that voltage is induced on the stator coils, whereby power is generated by the power generator, and a back yoke disposed at one of two opposed sides of the stator coils which is opposed to the other side thereof further confronting the permanent magnet of the rotor, the back yoke being made of a magnetic material with a predetermined electrical resistance.

The invention provides low temperature starting methods for a fuel cell system, computer equipment and a memory medium. A low temperature starting method comprises the steps of obtaining and judging whether an initial temperature of a reaction stack in the fuel cell system is greater than a first temperature threshold or not; judging whether the fuel cell system enters a low temperature starting mode or not if the initial temperature is not greater than the first temperature threshold; providing hydrogen for an anode the fuel cell system through utilization of a hydrogen system, and providingair for a cathode of the fuel cell system through utilization of an air system; pumping cathode reaction gas exhausted from a cathode exhaust port into a cathode air inlet through utilization of a cathode circulation pump in a cathode recirculation system; adjusting an output current of the fuel cell system through utilization of a power output system, thereby enabling the output current to be equal to a preset target current; periodically obtaining and judging whether a real-time temperature of the reaction stack is greater than a second temperature threshold or not; and starting an anode recirculation system if the real-time temperature is greater than the second temperature threshold.

This invention discloses a high-efficiency method for producing oxygen with six adsorption columns suitable for altiplano. The method comprises: (1) introducing oxygen into adsorption column A, adsorbing nitrogen by the molecular sieve in adsorption column A, and exhausting oxygen from the oxygen exhaust mouth under high pressure and multi-pass rotary distributing valve control; (2) shutting off the air inflow pipeline when the molecular sieve is saturated, and opening the pressure-balancing passage of adsorption column A to reduce the pressure; (3) opening the counter aeration passage of adsorption column A to exhaust nitrogen when the pressure is reduced to a certain value. Under the control of the multi-pass rotary distributing valve, adsorption columns A, B, C, D, E and F work in turn. Nitrogen and oxygen are separated by pressure swing adsorption of the molecular sieve, thus oxygen is obtained from air. The method has such advantages as high oxygen yield (58-65%), high oxygen concentration (93 plus and minus 3%), and high oxygen production efficiency, and can effectively produce oxygen for altiplano.

The invention discloses a nuclear energy power generation system using a liquid metal magnetofluid as a working medium, belonging to the technical field of nuclear energy and magnetofluid power generation. The nuclear energy power generation system mainly uses a magnetofluid nuclear reactor coolant as the working medium of a magnetofluid power generator simultaneously to take away the heat generated by a reactor core; and according to the nuclear energy power generation system, power generation is realized based on a direct cycle manner, so that a steam turbine-power generation part of a nuclear power station is saved, therefore the power generation efficiency of the nuclear power station is effectively improved. Moreover, no mechanical motion components are arranged in the power generation channel of the magnetofluid power generator, so that the design becomes easier, the cost of the system is reduced, and the stability is increased; the dependence and waste of water resource are avoided; and a liquid metal fluid is used as a coolant, so that environmental pollutions, such as CO2 emission, are prevented.

The apparatus includes a water collecting plate 6 which collects water into a water inflow opening 8 while intercepting and accumulating water flowing through a waterway, and a movable gate 5 which is capable of changing flow cross-sectional area of water flow acting to the top ends of rotor blades 33 of a vertical axis turbine 3 as inflowing from the water inflow opening 8. Here, owing to changing of flow cross-sectional area with opening and closing of the movable gate 5, a flow rate can be adjusted by changing a water level at the upstream side and opening area of an orifice hole and operation of the rotor blades 33 can be stopped by blocking water passing toward the vertical axis turbine 3.

An electric power supply system capable of maintaining stable power generation or the like regardless of variation in the amount of fuel gas being supplied and variation in the gas calorie, comprises a gas engine, a gas turbine, a suction device configured to collect the generating gas, a gas separating device configured to classify the gas collected according to the calorie, a gas calorie adjusting device configured to mix gases having different calories which are supplied from the gas separating device to adjust gas calorie before supplying to the gas engine and the gas turbine, a gas amount balance monitor device configured to monitor balance between the amount of gas being consumed by the gas turbine and the gas engine in operation and the amount of gas being supplied from the gas calorie adjusting device, and a system control device configured to control operation of the gas engine, operation of the gas turbine, and operation of the gas calorie adjusting device.

A fuel cell system which includes: a fuel cell fed with a reaction gas for generating power; an output detection unit which detects output current and voltage of the fuel cell; a storage unit which stores a standard current-voltage characteristic of the fuel cell, from which a standard voltage of the fuel cell at an output current thereof is obtainable; and a gas feed mismatch detection unit which detects a gas feed mismatch of the reaction gas, based on a comparison between the detected output voltage of the fuel cell and the standard voltage at the detected output current, obtained from the standard current-voltage characteristic stored.

The present invention provides high humidity gas turbine equipment including a compressor compressing air, a combustor combusting the compressed air and a fuel, a gas turbine driven by the combustion gas, a generator driven by the gas turbine to generate power, a humidifier humidifying the compressed air by directly contacting it with hot water, and a regenerative heat exchanger heating the humidified compressed air by exhaust gas of the gas turbine and feeding it to the combustor, heat exchangers generating hot water for the humidifier utilizing a factory exhaust heat medium from the outside, a boiler generating steam to be supplied to the outside utilizing the exhaust gas of the gas turbine, and a boiler generating steam to be supplied to the outside utilizing the compressed air discharged from the compressor.

The apparatus includes a water collecting plate 6 which collects water into a water inflow opening 8 while intercepting and accumulating water flowing through a waterway, and a movable gate 5 which is capable of changing flow cross-sectional area of water flow acting to the top ends of rotor blades 33 of a vertical axis turbine 3 as inflowing from the water inflow opening 8. Here, owing to changing of flow cross-sectional area with opening and closing of the movable gate 5, a flow rate can be adjusted by changing a water level at the upstream side and opening area of an orifice hole and operation of the rotor blades 33 can be stopped by blocking water passing toward the vertical axis turbine 3.

In an air conditioner for a hybrid vehicle, an air conditioning unit performs air-conditioning operation by electrical power supplied from a battery. When a residual charging degree of the battery becomes equal to or lower than a target degree, an electrical motor generator is driven by a vehicle engine so that the battery is charged through the electrical motor generator. Further, when a rotation speed of the engine is lower than a predetermined speed or when a power generation efficiency due to the engine is lower than a predetermined efficiency, air-conditioning capacity of the air conditioning unit is set lower, so that a consumption power of the air conditioner is restricted. Accordingly, the frequency for starting the engine only for charging the battery can be reduced.

The invention discloses an environment-friendly solar panel placing device comprising a base. A bearing is fixedly embedded in the middle part of the upper surface of the base, a supporting column isarranged above the base, and the outer surface of the bottom end of the supporting column is fixedly connected with the inner ring of the bearing. A sliding groove is formed in the middle of the leftside face of the supporting column, a sliding block matched with the sliding groove is clamped in the sliding groove, and a first through hole is formed in the left side of the front surface of the supporting column. The environment-friendly solar panel placing device can enable the movable block together with the solar panel to adjust the inclination angle conveniently under the action of a sliding block, a first through hole, a second through hole, a connecting rod and a universal ball by arranging the sliding groove. Under the action of a screw rod and a screw ring, the supporting column can rotate along with the solar panel by arranging the bearing, so that the inclination angle of the solar panel can be conveniently adjusted. The device can be conveniently moved by arranging rollers,so that the solar panel can be effectively prevented from shielding the solar panel, and the power generation efficiency of the solar panel is reduced.