39results about How to "Increase net efficiency" patented technology

An object of the present invention is to reflect a band of the bottleneck into the cost, to select an optimal path, and to enhance an efficiency of the net utilization without making a setting or a modification to the apparatus (bridge etc.) in which the path control protocol operates in a case where a difference exists between an actually utilizable rate (a band of the bottleneck) in the path between the bridges etc. and a link rate of the connection link such as the bridge etc. in a net in which the apparatus (bridge etc.), in which the path control protocol (STP etc.) for automatically computing a cost of a link by a physical band of the connection link operates, exists. In the system of the present invention, the port manager within the relay apparatus, upon receipt of a notification of the link rate from the port, investigates which side, out of the WAN side and the LAN side, becomes a bottleneck, and the cost rewriter within the relay apparatus rewrites the root path cost field within the BPDU in conformity to the rate of the bottleneck.

A system or methodology for converting thermal energy obtained from solar thermal, photovoltaic, geothermal or industrial waste heat into electrical power is disclosed. The energy efficient way of transferring two steams of liquid solutions containing different concentrations of ionic species is disclosed. The combination of thermal gradient in addition to concentration gradient to improve efficiency, reduce or avoid fouling is disclosed. This invention describes a method of efficient ion migration from concentrated stream to dilute stream thereby improving DC power generation process. The utilization of solar thermal energy from solar collector or concentrating photovoltaic (CPV) generator system or solar thermal power generation (CSP) system provides the additional driving force for ions transport from concentrated stream to dilute stream, apart from the concentration grading to generating power. The thermal power is also used to bring back the diluted steam to original concentration in the reverse Electro dialysis system. The utilization of CPV process heat or solar or waste heat for bringing back the dilute stream into the concentrated stream for next operation of ions gradient power generation is also disclosed in this invention.

A photovoltaic (solar) cell comprises two photovoltaic devices that are quantum mechanically coupled via a charge-coupling layer. One of the PV devices may have an energy band gap that is larger than or equal to an energy band gap of the other of the PV devices. The effective electron barrier heights or electron affinity on side portions of the quantum coupling layer are higher than the maximum energy of photo-generated electrons in the photovoltaic devices. The photovoltaic device with larger band gap may include an electron and / or hole transport layer and photon absorbing layer. Photons are transmitted through the transport layer to the absorbing layer. Some high energy photons are absorbed by the absorbing layer. The absorbing layer may function as an absorber of high energy photons and generator of electrons / holes (or excitons). Holes generated in the absorbing layer may be quenched by electrons from the second photovoltaic device.

Disclosed is a method for the preparation of intermediates useful in the synthesis of gemcitabine-[phenyl-benzoxy-L-alaninyl)]-phosphate. Also disclosed is a method of preparing gemcitabine-[phenyl-benzoxy-L-alaninyl)]-phosphate.

An external fluid in a closed loop is used to cool hot gas path components of gas turbine. After cooling the turbine components, the heated external fluid is dumped either in the compressor discharge casing or in the one of the turbine's stages. Where the external fluid is nitrogen to be dumped in the turbine compressor's discharge casing, the nitrogen is compressed using diluent nitrogen compressors. Alternatively, where the external fluid is nitrogen to be dumped in one of the stages of the turbine, the nitrogen is not compressed at all. The turbine blade heat exchangers in the turbine stages through which the nitrogen passes can be connected in parallel or in series for cooling the hot gas path components in the turbine stages. The nitrogen can optionally be mixed with air or steam or not mixed at all.

The invention provides a low-rank coal purification power generation system. The low-rank coal purification power generation system comprises a boiler, a steam turbine used for power generation and a power plant coagulator enabling steam to be coagulated into water. A steam exhaust port of the boiler is connected with a gas inlet of the steam turbine, an exhaust port of the steam turbine is connected with a gas inlet of the power plant coagulator, a liquid outlet of the power plant coagulator is connected with a liquid inlet of the boiler, a fuel inlet of the boiler is provided with a drying device used for drying low-rank coal and a directly-heated-type thermal decomposition furnace which can conduct thermal decomposition on the dried low-rank coal to generate semi-coke is installed between the boiler and the drying device. The semi-coke generated after the low-rank coal in the low-rank coal purification power generation system is purified is used for burning in the boiler, therefore, the boiler burning efficiency is directly increased and the investment is lowered.

An efficient thermodynamic cycle system utilizing vortex tubes is mainly composed of a work medium pump, a heat exchanger, an expanding machine and a vortex tube flow dividing and cooling unit. The vortex tube flow dividing and cooling unit is formed by combining the multiple vortex tubes. Liquid working media separated from the vortex tubes directly enter a working medium pump inlet. Gaseous working media enter the heat exchanger to exchange heat with low-temperature working media on the high-pressure side of the cycle system. The cooled working media enter the vortex tubes again to be subjected to flow dividing and cooling; liquid working media enter the working medium pump inlet; and gaseous working media enter the heat exchanger to exchange heat with low-temperature working media on the high-pressure side of the cycle system again. Due to flow dividing and cooling of the multi-stage vortex tubes and many times of heat exchange with the low-temperature working media, most of the working media enter the working medium pump inlet in the form of liquid, only an extremely small part of working media are not liquefied, the proportion of the working media entering the working medium pump inlet to the non-liquefied working media is proper, and it can be guaranteed that all the working media on the working medium pump inlet are liquid working media by combining the working media entering the working medium pump inlet and the non-liquefied working media. A liquid working medium pump is used for pressurizing working media, power consumption of the pump is reduced, heat in the cycle system is recycled, and thermal efficiency is high.

An offshore power generation structure comprising a submerged portion having a first deck portion comprising an integral multi-stage evaporator system, a second deck portion comprising an integral multi-stage condensing system, a third deck portion housing power generation equipment, cold water pipe; and a cold water pipe connection.

The invention discloses a ship engine waste heat power generation comprehensive utilization method. The ship engine waste heat power generation comprehensive utilization method comprises the following steps: (1) a flue gas evaporator is arranged on a flue gas exhausting channel of a ship heat-conduction oil furnace, and high-temperature flue gas passes through a shell pass of the flue gas evaporator; a power generation medium of a waste heat power generation system passes through the shell pass of the flue gas evaporator, and the power generation medium is subjected to heat exchange and heat suction with the high-temperature flue gas; meanwhile, cylinder sleeve cooling circulating water of a ship engine set enters a shell pass of a pipe shell type evaporator and is subjected to heat exchange with the power generation medium entering the shell pass of the pipe shell type evaporator of the waste heat power generation system; (2) after the power generation medium is evaporated, the power generation medium is changed into high-temperature and high-pressure steam and is conveyed into an expansion machine, and the expansion machine is propelled to output mechanical power so as to drive a three-phase asynchronous motor to generate power; (3) then the power generation medium enters an underwater condenser outside a board; (4) the condensed power generation medium passes through a fully-closed underwater medium pressurizer to be divided into two paths, namely one path is returned back to the flue gas evaporator, and the other path is returned back to the pipe shell type evaporator. With the adoption of the method, the purification efficiency of a power generation system is improved.

An offshore power generation structure comprising a submerged portion having a first deck portion comprising an integral multi-stage evaporator system, a second deck portion comprising an integral multi-stage condensing system, a third deck portion housing power generation equipment, cold water pipe; and a cold water pipe connection.

The invention relates to an integrated oxygen-enriched combustion power system which comprises an oxygen-enriched combustion boiler for combusting coal powder, wherein a high-temperature heating surface is additionally arranged in the oxygen-enriched combustion boiler and is used for heating compressed air for driving a gas turbine; the oxygen-enriched combustion boiler is communicated with a gas-gas heat exchanger and is used for receiving heated oxygen and the heated compressed air which are output by the gas-gas heat exchanger and outputting smoke to the gas-gas heat exchanger; furthermore, the high-temperature heating surface of the oxygen-enriched combustion boiler is communicated with the gas turbine and outputs the compressed air heated by the high-temperature heating surface of the oxygen-enriched combustion boiler so as to drive the gas turbine to do work; the gas turbine drives a gas compressor and a CO2 compressor; high-temperature exhaust gas discharged from the gas turbine is conveyed into the highest stage of a generalized backheating heater for further heating water fed by the boiler. According to the integrated oxygen-enriched combustion power system provided by the embodiment of the invention, safe, environment-friendly and economical running of the oxygen-enriched combustion power system can be realized.

The invention discloses a device and method for achieving low-grade cogeneration by means of an IGCC. The method comprises the steps that saturated synthesis gas is adopted as a heat source for heating a pressurized organic working medium into the superheated steam state from the liquid state, expansion working electricity generation is performed inside an expansion machine, then, the organic working medium enters a condenser to become liquid, and the liquid organic working medium is boosted through a pump, so that an organic working medium Rankine cycle is formed. The device and method are used for reducing heat losses inside a gasification island cooling tower, and the system electricity generation efficiency is improved by means of low temperature exhaust heat in a gasification island.

The invention discloses a combined cycle waste heat utilization system capable of stabilizing the high / low inlet air temperature of a compressor. The combined cycle waste water heat utilization system comprises a smoke-hot water heat exchanger, an air-water heat exchanger, an expansion water tank, a pipeline pump, a low-temperature heat source hot water type lithium bromide refrigerator and a valve. A heat source used by the low-temperature heat source hot water type lithium bromide refrigerator and a heat source used by the air-water heat exchanger are waste heat of smoke at the tail portion of a waste heat boiler. In the low-temperature weather, the system can heat the inlet air of the compressor to prevent water drops in the air from being frozen, and the running safety and the heat economical efficiency of a unit are improved; in the high-temperature weather, the system can cool the inlet air of the compressor to improve the peak shaving capability and the heat economical efficiency of the unit; and waste heat of the discharged smoke of the waste heat boiler is used as the heat source of the system, the function of stabilizing the temperature of the inlet air of the compressor is achieved, switching of a compressor inlet air heating function and a compressor inlet air cooling function can be achieved through opening and closing of the valve, and double benefits of improving the safety and the economical efficiency of the unit are achieved.

The invention discloses a novel circulating fluidized bed combined cycle comprising a gas turbine device, a circulating fluidized bed boiler, a steam turbine device, a piping system and a bypass chimney connected with gas turbine exhaust gas and boiler first and secondary wind systems, an air piping system connected with a gas compressor intermediate-grade gas suction port and a boiler high-pressure tuyere, and a flue gas waste heat recovery oxygen-removing heating system; a tail end smoke flue of the circulating fluidized bed boiler is communicated with atmospheric air through a dust collector and a chimney, a high-temperature superheater and a high-temperature reheater of the circulating fluidized bed are respectively communicated with a high-pressure steam turbine and an intermediate-pressure steam turbine, the intermediate-pressure steam turbine is communicated with a low-pressure steam turbine, and an exhaust gas condensate of the low-pressure steam turbine is communicated with a coal economizer through a condensate water pump, low-pressure heaters, a deaerator, a pre-feawater pump, a water-feeding pump and high-pressure heaters. The combined cycle has the advantages of high thermal efficiency, less NOx emission, short starting time, low fuel consumption and station service power consumption rate, less auxiliary equipment, and remarkable energy-saving and emission-reduction effects.

An external fluid (27) in a closed loop is used to cool hot gas path components of gas turbine (16). After cooling the turbine components, the heated external fluid (27) is dumped either in the compressor discharge casing (28) or in the one of the turbine's stages (16A-C). Where the external fluid (27) is nitrogen to be dumped in the turbine compressor's discharge casing (28), the nitrogen is compressed using diluent nitrogen compressors (17). Alternatively, where the external fluid (27) is nitrogen to be dumped in one of the stages (16A-C) of the turbine (16), the nitrogen is not compressed at all. The turbine blade heat exchangers (22) in the turbine stages (16A-C) through which the nitrogen passes can be connected in parallel or in series for cooling the hot gas path components in the turbine stages (16A-C). The nitrogen can optionally be mixed with air or steam or not mixed at all.

The invention discloses ultramicro power sewage treatment equipment comprising a solid-liquid separator. The solid-liquid separator comprises an outer box body; a roller is transversely and obliquelyarranged in the outer box body, the roller has a hollow structure, one end of the roller is open, a sewage pipe is connected to the other end of the roller, and a plurality of through holes are formedin the roller. A funnel-shaped sewage outlet is formed in the lower end of the outer box body, and a sedimentation tank is arranged below the sewage outlet; a first receiving hopper is arranged belowthe impurity drain outlet, and the lower end of a second receiving hopper is connected with a fermentation tank. The scheme is used for agricultural sewage treatment, sewage discharged from an agricultural sewage source firstly enters the roller through a transfer box, impurities in the sewage are screened out, a problem that the impurities are slowly decomposed in the sewage purification processis solved, the sewage purification efficiency is improved; meanwhile, the impurities can be utilized to generate biogas to be utilized. Impurities are discharged by utilizing self weight in the roller, so that the power used by the device is far less than that used by a conventional solid-liquid separation device, and the sewage purification cost is saved.

A method of assembling a pipe on a water-supported floating platform is provided. The platform includes an open central bay, and a gantry on the platform is arranged so as to surround at least a portion of the bay. The method includes providing a pipe intake assembly and staves on the platform; transferring the pipe intake assembly to the interior space of the bay; assembling the individual staves on the pipe intake assembly in an offset construction; lowering the pipe portion within the bay and into the water until the upper ends of the staves reside within a lower portion of the gantry; increasing the length of the pipe portion by assembling additional staves to the upper ends of the assembled staves; and repeating the step of increasing the length of the portion of the pipe until the pipe has a desired length.

An offshore power generation structure comprising a submerged portion having a first deck portion comprising an integral multi-stage evaporator system, a second deck portion comprising an integral multi-stage condensing system, a third deck portion housing power generation equipment, cold water pipe; and a cold water pipe connection.

The invention discloses a fast reactor carbon dioxide power generation system and method. The system comprises a fast reactor core, a sodium pump and a sodium helium heat exchanger, the sodium-helium heat exchanger is a shell-and-tube heat exchanger, sodium is located on the shell side of the heat exchanger, helium is located on the tube side of the heat exchanger, a fast reactor core, a sodium pump, the shell side of the sodium-helium heat exchanger and a pipeline connected with the shell side of the sodium-helium heat exchanger form a primary loop of the fast reactor carbon dioxide power generation system, an electric heating device is arranged in the primary loop, and the medium of the primary loop is sodium. The electric heating device can heat the medium to 200 DEG C or above. According to the method, helium belongs to inert gas and does not chemically react with sodium in a primary loop, and after the sodium-helium heat exchanger leaks, even if helium enters the sodium in the primary loop, chemical reaction does not occur, and nuclear safety accidents cannot be caused; under the condition of high temperature parameters, the supercritical carbon dioxide power generation cycle is more remarkable in efficiency advantage and better matched with fast reactor positioning, and the net efficiency can be improved by 2-4% compared with that of water working medium cycle at the 500 DEG C.

The invention discloses a method and system for dynamically associating the quality of a wrapping machine type with equipment management. The method includes: evaluating the wrapping quality of a wrapping machine type according to historical online detection data, and obtaining the historical wrapping quality evaluation Results: According to the historical package quality evaluation results and historical quality anomaly processing records, the quality anomaly types of the package machine were classified to obtain the quality anomaly classification results; the correlation analysis was carried out on the historical reel quality evaluation results and quality anomaly classification results, In order to obtain an association rule model for associating the quality of the built model with the operating state of the equipment; according to the current online detection data and the association rule model, the prediction result of the abnormal type of the model quality is obtained. The dynamic association method of quality and equipment management provided by the present invention can monitor and predict the abnormality of quality and equipment in the production process of the package through the association rule model, which is beneficial to realize the in-process management and control of the package production process.