204results about How to "Reduce initial investment cost" patented technology

An apparatus for authenticating a user for network access in a communication system comprises: an input module contained in a subscriber terminal for receiving and transferring identification information and a password for network access from a user; an authentication supplicant contained in network equipment for requesting network access authentication for the identification information and password transferred from the input module; an authentication server for storing information related to the network access authentication, and for performing authentication to determine whether to permit the subscriber terminal to access a network in response to the authentication request; and a protocol authenticator for performing protocol processing between the authentication supplicant and the authentication server. A corresponding method is disclosed. Thus, it is possible to authenticate subscriber terminals for network access without the installation, by an Internet service provider, of specific software (e.g., a supplicant program) in all of the subscriber terminals.

The invention discloses a tower type solar thermal power generation system for a heat absorber of vacuum heat absorption pipes, which is characterized in that water/steam is taken a heat transfer fluid, and fusion salt is taken as a heat storage medium. The tower type solar thermal power generation system comprises a heliostat (1), a support tower (2), a heat absorber (3), a steam turbine (4), a generator (5), a deaerator (6), a condenser (7), a water feed pump (8), a high-temperature fusion salt storage tank (9), a low-temperature fusion salt storage tank (10), a water/steam-fusion salt heat exchanger (11), a fusion salt steam generator (12) and a control valve (13). The heat absorber (3) is formed by connecting the vacuum heat absorption pipes (18) in series and in parallel. According to the invention, the heliostat is arranged in a fan-shaped manner, a rectangular manner or a circumferential manner, the high-temperature and high-pressure overheating steam is obtained, and the solar thermal power generation system is suitable for a large installed capacity tower type solar thermal power generation station.

After depressed portions (4) have been formed in advance in that surface of a Si substrate (1) on which Si single films (8) are to be formed, that surface of the Si substrate (1) on which the Si single films are to be formed and an intermediate substrate (5) are bonded together, and elements are separated from each other by grinding the Si substrate (1) from the bottom wall side of the depressed portions (4).

The invention discloses a low-temperature hydraulic turbine closed type experimental system and a test method. Liquefied gas in a liquefied gas storage tank of the system passes through a pipeline, is pressurized by a low temperature pump, and enters a hydraulic turbine all the way through the pipeline. The liquefied gas throttled and decompressed in the hydraulic turbine returns to the liquefied gas storage tank through a pipeline, another path of liquefied gas enters a vaporizer and is led into a shaft seal cavity of the hydraulic turbine through a pipeline to serve as seal gas of the hydraulic turbine. The hydraulic turbine is connected with a dynamometer through a coupler, and an oil station is connected with the hydraulic turbine through an oil pipe.

The invention discloses a recirculating fluidized bed oxygen-enriched combustion apparatus, which comprises an air compartment, an air distribution device arranged above the air compartment and a hearth arranged above the air distribution device; the upper part of the hearth is connected with a high-temperature cyclone separator; the upper part of the high-temperature cyclone separator is connected with a heating surface; the lower part of the heating surface is connected with an economizer. The invention further discloses an operation method of the recirculating fluidized bed oxygen-enriched combustion apparatus. The recirculating fluidized bed oxygen-enriched combustion apparatus and the operation method thereof, disclosed by the invention, overcome the defects in the prior art, and intermediate temperature flue gas is used as primary air and secondary air which respectively enter the hearth to serve as recirculating air, in addition, oxygen is injected into the primary air and the secondary air, and the oxygen injection amount can be adjusted, meanwhile, an oxidizing agent is provided for combustion in the hearth, the concentration of CO2 discharged from a boiler of a recirculating fluidized bed can be enriched to more than 80%, and the capture of the CO2 in the flue gas after combustion of coal is facilitated.

The present invention relates to a large-capacity electric power storage system using saline water, the system being capable of separating saline water into high-density saline water and fresh water and storing them using surplus power, during a low load, and producing power using the density difference between the high-density saline water and fresh water when power consumption increases rapidly, i.e. during a peak load. A super-large-capacity power storage system using saline water comprises: a condensation device for condensing/separating saline water and supplying condensed saline water and fresh water; a condensed saline water storage device and a fresh water storage device for storing the condensed saline water and fresh water supplied from the condensation device, respectively; a salinity difference power generation device connected to the condensed saline water storage device and the fresh water storage device to generate power using the density difference between the condensed saline water and fresh water; and a saline water storage device for storing saline water, which has passed through the salinity difference power generation device, and supplying the condensation device with saline water.

The invention discloses a charging shore power system and a charging method of a high-capacity electric ship. The system comprises a remote transmission module, a position locating module, a charginginterface module, a shore based receiving module, a position judging module, a position adjusting module and a charging module, the remote transmission module, the position locating module and the charging interface module are mounted on the ship, the shore based receiving module, the position judging module, the position adjusting module and the charging module are arranged on a shore, the shorebased receiving module and the position judging module are mounted on the position adjusting module and move when the positioning adjusting module moves, the position adjusting module is composed of aposition moving device and a position controller, a charging interface adjusting module is connected on the charging module and composed of a charging adjustment module and a charging cable, and thecharging interface module is docked with the charging cable to realize shore power connection-in and charging of the ship. The system has wide application prospect in the field of new energy ship power systems.

A power plant for the generation of electrical energy with a system (1) for processing flue gases resulting from a combustion of fossil fuels comprises, according to the invention, an adiabatic compressor (5) for a first low-pressure compression of the flue gases and a second multi-stage, low-pressure flue gas compression system (14) and a multi-stage, high-pressure CO₂ compression system (15), where both the low-pressure flue gas compression system and the high-pressure CO2 compression systems are combined in one single machine (C2) and are arranged on one common shaft (16) driven by one common driver (17). A heat exchanger (8) facilitates an improved recovery of heat resulting from the cooling of the adiabatically compressed flue gases. The invention allows an improvement of the overall power efficiency of a power plant integrated with this processing system as well as a reduction of investment cost.

The invention belongs to the field of natural gas curing separation, and in particular relates to a device for desulfurizing and decarburizing industrial flue gases, oilfield exploitation gases and gases generated in other processes by combining a hydrate method with a membrane method and introducing a super-gravity technology. By combining the hydrate method with the membrane method and introducing the super-gravity technology based thereon to perform deep desulfurization and deacidification on natural gas, the removal rates of acid gases including H2S and CO2 in the natural gas are greatly improved, so that the device can be applied to purification and separation of onshore and marine oilfield natural gases, particularly the treatment of natural gases in remote districts and certain small gas fields; and the device can be used for removing the acid gases including H2S and CO2 in the natural gases effectively to ensure that the natural gases reach a pipeline transportation standard.

The invention relates to a synthesis method of prednisolone acetate. A compound disclosed as Formula I is subjected to double bond bromination, reduction debromination, bromization and replacement reaction to generate prednisolone acetate. The method provided by the invention is high in yield, simple to operate and suitable for industrial production.

A curtain-type anchoring biological culturing reactor and its method for culturing vegetable cell, tissue or organs are disclosed. The reactor consists of bed(E), curtain-type netted double-layer anchoring culturing bed(A), supply system(B), hanger(C), composite circulation feeder(F) and disposable sterile sealing film(G). (A) is hung on (C) and has (E), (F) is arranged on top of (E), (E) is sleeved with (G). It's simple, safe and cheap. It has less consumption and can be used for continuous production.

The invention relates to the technical field of agriculture, and in particular to a greenhouse temperature control system. Compared with the prior art, the greenhouse temperature control system comprises a cold and hot exchange board, a cold and hot water dual-purpose heat preservation storage box, a cold and hot air circulation distributing machine and an air supply and exhaust system, wherein the unique cold and hot exchange board and the cold and hot water dual-purpose heat preservation storage box are adopted; cold energy or heat is transmitted to the greenhouse by the cold and hot water dual-purpose heat preservation storage box through the cold and hot air circulation distributing machine and the air supply and exhaust system, so that indoor temperature of the greenhouse or other places can be freely regulated, and can be rapidly reduced or raised in a short time, and the primary investment cost and the running cost for a long time of users can be reduced; a temperature control device system which is efficient, energy-saving and environmentally friendly can be realized, the ideal temperature needed by the users can be rapidly reached, and the uniform ideal constant temperature effect can be kept for a long time. The greenhouse temperature control system has the characteristics of being low in installation cost, low in use cost, economic and practical, saving the energy, protecting the environment and having good market prospect and the like.

A liquid crystal device includes: a circuit substrate; a counter substrate disposed so as to be opposed to the circuit substrate; a liquid crystal layer interposed between the circuit substrate and the counter substrate, the liquid crystal layer showing vertical alignment as an initial alignment state; a first alignment layer manufactured on a side of the counter substrate using a coating process, the side facing the liquid crystal layer, the first alignment layer having a vertical alignment function; and a second alignment layer manufactured on a side of the circuit substrate using a vacuum process, the side facing the liquid crystal layer, the second alignment layer generating a pretilt.

The invention relates to a lighting management control system, and belongs to the field of lighting lamps. The lighting management control system is composed of a lighting managing center, an Internet center, an integrated manager and a single-lamp controller. The lighting managing center is a controlling core. The Internet center receives control demands and various data from the integrated manager and transmits the control demands and the various data to the integrated manager. The integrated manager is a communication bridge. The demands and the data are received from the lighting managing center and transmitted to the lighting managing center in a Gprs mode, and at the same time, the demands and the data are received and transmitted to the single-lamp controller in a Zigbee mode. The single-lamp controller controls different types of lighting light sources through a Zigbee wireless ad-hoc network and enables various running data of a lighting product to be automatically transmitted to the integrated controller. The lighting management control system can conduct remote wireless control, is large in control amount, high in energy conservation efficiency, convenient to control, simple to install, and safe and reliable due to the fact that the different types of light sources are used.

The invention discloses a water curtain painting chamber. The water curtain painting chamber is characterized by comprising an air-conditioning air supply system (1), a natural air supply system (10), a manual operation area (4) and a workpiece spraying area (5), wherein the manual operation area and the workpiece spraying area are independently supplied with air; the air-conditioning air supply system and the natural air supply system are separated from each other; the air of the air-conditioning air supply system sequentially passes through a dynamic pressure chamber (2), a static pressure chamber (3), the manual operation area (4), a paint mist treatment system (6) and an air exhaust system (7); and the air of the natural air supply system sequentially passes through the dynamic pressure chamber, the static pressure chamber, the workpiece spraying area (5), the paint mist treatment system and the air exhaust system. The water curtain painting chamber has the advantages of reducing the consumption of energy in use, reducing the primary investment cost of air-conditioning equipment, and reducing the diffusion of paint mist by separating the paint mist of the spraying area from the manual operation area.

The invention discloses a novel deepwater lake water restoring method through bubble plume dispersion oxygenation. In a water stratification period, a plume oxygenation jetting device is arranged at the bottom of a lake, an air source of the plume oxygenation jetting device is pure oxygen, bubbles jetted from the plume oxygenation jetting device and introduced water form air-water mixture, then the air-water mixture ascends to the maximum altitude before thermal stratification while the bubbles are continuously dissolved and disappear, sinking plume is formed due to density difference, oxygen-rich water diffuses all around and enters a distant water environment after the plume sinks to the balance depth, the hypolimnion is directly oxygenated, and the ascending velocity of the air-water mixture is 0.12-0.17m/s. The novel deepwater lake water restoring method through the bubble plume dispersion oxygenation is strong in pertinence; ascending bubbles are rapidly dissolved, the oxygen transfer efficiency is high, the oxygenation effect is good, and the operation difficulty and construction difficulty are greatly simplified; and the novel deepwater lake water restoring method through the bubble plume dispersion oxygenation has the characteristics of no disturbance on the thermal stratification, no damage of a lakebed cold water fish growth environment, high feasibility, low implementation risk and good water restoring effect.

The invention discloses an absorptive heat exchanger unit which comprises a hot water type absorptive heat pump unit, a water-water heat exchanger and a primary side pipeline and a secondary side pipeline. The primary side pipeline sequentially passes a generator of the heat pump unit and the water-water heat exchanger from water supply to water return. The heat exchanger unit further comprises a heat supply network heater, and the primary side pipeline has to pass the heat supply network heater before entering the generator. Compared with the prior art, the absorptive heat exchanger unit has the advantages that the heat supply network heater can heat the primary side pipeline before the primary side pipeline enters the heat exchanger pump unit, heat compensation is realized, water supply temperature of the primary side pipeline can be further increased, temperature difference between supply and return of primary-side hot water is increased, and initial investment and operation cost of the absorptive heat exchanger unit can be reduced.

The invention discloses a liquid cargo tank arrangement form capable of effectively reducing 20000-30000 m<3> liquefied gas carrier cost. The number of liquid cargo tanks is only two, the two liquid cargo tanks include the first liquid cargo tank near a bow and a second liquid cargo tank near a stern, a first transverse bulkhead and a second transverse bulkhead are arranged between the first liquid cargo tank and the second liquid cargo tank, the first transverse bulkhead is close to the first liquid cargo tank, and the second transverse bulkhead is close to the second liquid cargo tank; a non-cargo loading tank is formed between the first transverse bulkhead and the second transverse bulkhead, the distance between the first transverse bulkhead and the second transverse bulkhead is Lvoid,the Lvoid is larger than or equal to L<2/3>/3-L1-L2, wherein L is the length of a liquefied gas carrier, L1 is the distance from the tail of the first liquid cargo tank to the first transverse bulkhead, and L2 is the distance from the head of the second liquid cargo tank to the second transverse bulkhead. The liquid cargo tank arrangement form can reduce the ship initial investment cost, can alsoeffectively simplify the operation process of the liquefied gas carrier and improves the operational safety of the liquefied gas carrier.

The invention discloses a yellow phosphorus tail gas purification method and system. The method comprises the following steps: washing yellow phosphorus tail gas at 10-15 DEG C to remove dust and part of elemental phosphorus; carrying out alkali wash on washed yellow phosphorus tail gas to remove acidic gas such as SO2, H2S and the like; introducing the yellow phosphorus tail gas after alkali wash into a first level oxidizing solution to be oxidized to remove PH3, wherein the first level oxidizing solution is one of KMnO4, NaClO3, KClO3 and Ca(ClO3)2 or combination of one, two or various of NaClO3, KMnO4, KClO3 and Ca(ClO3)2, and the mass concentration of the first level oxidizing solution is 0.4-0.8%; and neutralizing the oxidized yellow phosphorus tail gas by a NaOH solution to obtain purified yellow phosphorus tail gas. The yellow phosphorus tail gas purification method effectively removes harmful impurities and is low in energy consumption.