92results about How to "Reduce investment and construction costs" patented technology

The invention relates to a treatment method of organic solid waste. The treatment method comprises the following steps of: homogenizing the organic solid waste and then preheating, carrying out a thermal hydrolysis reaction on the preheated organic solid waste, then pushing the material into a depressurization tank and a buffer tank to be subjected to primary depressurization and secondary depressurization and then temporary storage, then carrying out heat exchange on the material, carrying out anaerobic digestion on the material subjected to heat exchange, carrying out vacuum degassing treatment on digested sludge in a digested sludge tank, dehydrating the treated digested sludge to form dehydrated sludge, conveying the dehydrated sludge to a drying room to be dried, and producing dried biogas residue. According to the treatment method of the organic solid waste, high temperature hydrolysis and anaerobic digestion technologies are adopted, the problems that resource is wasted when a burning method is adopted and secondary pollution can be easily caused when a burying method is adopted can be avoided, digestive efficiency in follow-up anaerobic digestion is improved, standing time of an anaerobic digestion process is also reduced, and sludge subjected to anaerobic digestion is subjected to vacuum degassing, so that carbon dioxide and ammonium nitrogen in the digested sludge can be effectively removed, and sludge dehydration efficiency is improved.

The invention discloses an energy router facing orderly charging of electric vehicles, and a charging management system. The energy router comprises a main control unit, a man-machine interaction module, a communication unit and a function unit; the man-machine interaction module is connected with the main control unit; the communication unit comprises a remote communication module and a local communication module; the remote communication module and the local communication module are connected with the main control unit; the function unit comprises a control module, an alternating current collecting module and an orderly charging module; the control module is matched with the man-machine interaction module to control a terminal; the alternating current collecting module collects the alternating current analog quantity and metering electric energy; and the orderly charging module is used for conducting orderly charging strategy generating and caching, interaction with an orderly charging management platform, orderly charging strategy forwarding, zone area load line crossing control, zone area information and charging information collecting, and zone area identification. Timely andaccurate electricity utilization information can be provided for users, autonomous selection of the users is achieved, diversified customer needs are met, and meanwhile influences of large-scale random disorderly charging of the electric vehicles on a power grid are lowered.

The invention provides a system and method for achieving control handover between a vehicle depot and a testing line. The system comprises a vehicle depot in-situ work station A, a testing line in-situ work station B and an interlocking host C; the testing line in-situ work station B sends a testing request to the interlocking host C after a test train stops at the preset track section of the testing line to enable the interlocking host C to send testing request state information to the vehicle depot in-situ work station A; the vehicle depot in-situ work station A sends a non-route shunting route command to the interlocking host C according to the testing request state information to enable the interlocking host C to conduct non-route logic check and lock a switch on the testing line to make a straight line, open an enabling signal of a shunting signal on a non-route of the testing line and send testing permission information to the testing line in-situ work station B after passing the check; the testing line in-situ work station B deals with a train route for testing according to the testing permission information and sends testing canceling information after testing is ended to enable the interlocking host C to send testing end state information to the vehicle depot in-situ work station A; the vehicle depot in-situ work station A enables the non-route to be unlocked after delaying according to the testing end state information. The system is low in construction cost, high in integration level among devices and high in reliability and usability.

The invention relates to the technical field of power supply systems, in particular to an electric energy router for the tail end of a power distribution network and a control method thereof. A bidirectional converter module is used for providing a power distribution network and an alternating-current load interface, realizing alternating-current and direct-current electric energy conversion and performing electric energy quality treatment on the power distribution network, and comprises reactive power compensation, harmonic wave compensation, negative-sequence current compensation and zero-sequence current compensation; a photovoltaic module is used for providing a photovoltaic cell interface and utilizing the electric energy generated by the photovoltaic cell to the maximum extent; an energy storage module is used for providing an energy storage battery interface to realize a peak clipping and valley filling function; and a charging pile module is used for providing a charging interface for the new energy automobile to realize a function of charging the new energy automobile. According to the invention, various forms of electric energy conversion can be realized, compared with the existing electric energy reason device, a high-frequency isolation transformer is not needed, the system volume is smaller, the mass is lighter, the efficiency is higher, and the structure is simpler.

The invention relates to an indoor positioning system and an application method thereof. The indoor positioning system comprises a wireless network access point or a wireless network, a positioning server and a positioning terminal, and also positioning tags, wherein the basic information of locations is pre-written in the positioning tags and the positioning tags are arranged in indoor key nodes and used for performing identification monitoring and tracking positioning on identified objects; the positioning terminal adopts a device capable of reading information, and the positioning terminal obtains position information by scanning the nearby positioning tags and transmitting the position information carried by the positioning tags to a background positioning server through the wireless network. The indoor positioning system is capable of solving the problems of poor positioning accuracy, limited application range and high construction cost of an existing indoor positioning technology and the system thereof, and also capable of meeting the requirements of practical indoor positioning work.

Distributed traffic signal control system structured in four stages includes central control stage as first level, regional control stage as second level, key road junction control stage as third level. Characters are that road junction control stage or extended virtual road junction control stage as fourth level is setup under the third level. Main device is central controlling machine in the central control stage. Main device is regional controlling machine in the regional control stage in charge of coordinated controlling key road junction controlling machine. Main device is key road junction controlling machine in the key road junction control stage in charge of coordinated controlling road junction controlling machines or virtual road junction controlling machines. Main device is road junction controlling machine in charge of controlling traffic light on / off in road junction. Virtual road junction controlling machine exists in software logically, and does not exist physically.

The invention discloses a traffic network and electric automobile charging station coordination planning method and belongs to the traffic planning and electric automobile charging scheduling technology field. The method comprises steps that a coordination planning model taking highest traffic network reliability, highest user satisfaction and lowest electric automobile charging station investment construction cost as targets is established, firstly, an electric automobile charging station planning scheme preferably satisfying the highest user satisfaction and the lowest electric automobile charging station investment construction cost is determined under the maximum electric automobile latency constraint, secondly, a planning scheme of the traffic network is determined under the lowest total road reconstruction and electric automobile charging station investment construction cost constraint, lastly, a combined scheme capable of satisfying the highest user satisfaction, the lowest electric automobile charging station investment construction cost and the lowest road reconstruction lost can be acquired. The method is advantaged in that influence of the traffic network on electric automobile user charging selection is reduced, and dual-network planning cost is reduced.

The invention relates to the technical field of power systems and automation thereof, in particular to a fuzzy coordination control calculation method for a reactive power compensation system of a power distribution network in DG and EV environments. The method comprises the following steps: calculating a working temperature; calculating a working open-circuit voltage, a short-circuit current anda filling coefficient; calculating output voltage and output power; calculating the output power of the wind turbine generator; setting a target function of collaborative optimization control; considering conditions required to be met by the safe and stable operation of the power grid; introducing a fuzzy decision-making method based on a fuzzy set theory to solve the uncertainty problem caused bynew energy power generation and load fluctuation; fuzzifying a multi-objective function of the power distribution network reactive power compensation system cooperatively scheduled by DG and the EV into a single-objective membership function; and solving the multi-objective optimization model by adopting a MATLAB simulator and utilizing a fuzzy power flow calculation method to obtain an operationstrategy of a decision variable. And two indexes including stability and economy of the power grid are improved.

The invention provides an evaporator for salt-containing organic waste water of high concentration. The evaporator comprises the following components: an evaporating chamber, a shower pipeline, a steam buffer tank, a hot well and a sand supplementing tank; the evaporating chamber comprises the following components: a heat exchange tube bundle, an evaporating chamber cylindrical shell, a deformingdevice, a steam pipe case, and a purging pipeline; the heat exchange tube bundle comprises several heat exchange tubes, and the heat exchange tubes are horizontally installed at the lower part in theevaporating chamber cylindrical shell; the steam buffer tank comprises a manhole and a flushing pipeline, the steam buffer tank and the evaporating chamber are connected through a flange, and the flange is installed on a secondary steam outlet of the evaporating chamber; the manhole is arranged at the lower part of the steam buffer tank and closed to the evaporating chamber; the flushing pipelineis provided with a nozzle, and the flushing nozzle is placed over a demister of the evaporating chamber. The flushing pipeline is provided with the flushing nozzle for carrying out on-line flushing ofthe demister in the evaporating chamber, in order to avoid unstable operation of the evaporator caused by demister failure.

The invention discloses a turnout steering mechanism of a suspended type monorail bus rapid transit. The turnout steering mechanism comprises a rail, a main frame and main guide wheels, wherein the rail consists of an upper guide rail, a lower guide rail and a rail bracket which connects the upper guide rail and the lower guide rail together, the main guide wheels slide on the lower guide rail and are installed on the main frame, a compartment is suspended on the main frame, an auxiliary frame is installed on the main frame, auxiliary guide wheels and a magnetic sucking disc are installed on the auxiliary frame, when passing through a turnout, the magnetic sucking disc and the upper guide rail generate attraction force, the auxiliary guide wheels slide on the upper guide rail, and a small clearance is kept between the magnetic sucking disc and the upper guide rail. The turnout steering mechanism of the suspended type monorail bus rapid transit has the advantages of low construction cost, simplicity in rail network, accurate turnout separation, reliability in working and the like.

The invention discloses an online weighing device for steel billets. The device comprises a stand, a lifting device and a weighing sensor. The device is characterized in that the stand is supported on a roller way of a continuous casting machine in a transverse mode, a beam which is perpendicular to the conveying direction of the roller way of the continuous casting machine is arranged on the stand, the lifting device is connected to the stand, the lifting device slides to the position of one of the steel billets on the roller way of the continuous casting machine along the beam, the weighing sensor is connected under the lifting device, a weighing lifting hook is arranged under the weighing sensor for lifting the steel billets, and two or more groups of the lifting devices and the weighing sensors are arranged in the conveying direction of the roller way of the continuous casting machine. According to the online weighing device for the steel billets, the investment and construction cost are low, the device can be conveniently installed on the spot in an existing rolling production line, the structure is simple, the construction is facilitated, the construction period is short, the measuring is accurate, the operation is convenient, and the device has a temporary lifting function when the conveying of uniflow steel billets is faulted.

The invention relates to a production method of naphthenic oil. With a reduced-pressure distillate oil of a crude naphthenic oil as a raw material, the production method includes following steps: (1) preparing a purified oil in a manner of solvent purification; and (2) removing polycyclic aromatic hydrocarbon from the purified oil in the step (1) in a manner of hydrofining for producing the naphthenic oil which is transparent. The naphthenic oil is less than 1 ppm in the content of benzopyrene and is less than 10 ppm in a total weight of eight polycyclic aromatic compounds. The naphthenic oil can satisfy an environmental protective standard requirement of European Union completely and has a CN value being more than 45%.

The invention discloses a system for producing alumina by desiliconization fly ash sintering method, which comprises a desiliconization fly ash sintering mechanism, an aluminum hydroxide extraction device and a roasting device. The desilication fly ash sintering mechanism includes a first ball mill, The silo, semi-suspension furnace, cooling machine, second ball mill, and conveying mechanism, the system for producing alumina by desiliconization fly ash sintering method not only achieves low energy consumption, but also further improves productivity. The invention also discloses a method for producing alumina by sintering the desiliconized fly ash.

The invention relates to a purification technique of waste water, in particular to a technique of waste water treatment by using powder materials, which is applicable to the improvement of water quality and the emergency treatment of the polluted water. The method of the invention determines the needed amount of dried powder solid in accordance with the application field and the water quality, the needed water quantity according to the ratio of solid and liquid in mixed solution, and conveyer equipment that is matched with the volume of a mixing pool. The dried powder solid and water are conveyed by the conveyer equipment continuously and stably into the mixing pool under the control of an automatic control system of on-line mix and injection, and then are stirred evenly, thereby realizing the on-line, dynamic and proportional configuration of the mixed solution. Meanwhile the mixed solution after configuration is conveyed into a water treatment place. The method of the invention solves the difficulty in the continuous configuration of the dried powder solid during the water treatment, and is characterized by the low cost of investment construction, continuous, quick, and flexible-dose on-line configuration and injection, thereby guaranteeing the timely and efficient water treatment and having good economic and social benefits.

The invention relates to the technical field of sewage treatment, in particular to an ecological landscape type integrated garbage and sewage treatment system for villages and small towns. The system comprises a grille well, an aeration adjustment pool, a garbage transfer station, a reinforced ecological pool and a plurality of earthworm natural decomposition pools connected in series, wherein the grille well is connected with the aeration adjustment pool through a sewage pipe, the aeration adjustment pool is connected with a flat-flow water distributor in the reinforced ecological pool through a pipeline, and the reinforced ecological pool is connected with the earthworm natural decomposition pools through pipelines; the earthworm natural decomposition pools are connected with one another through the sewage pipe; a gas collection pipeline is connected with a gas collection fan and is connected with the aeration adjustment pool through the gas collection fan and a gas pipeline, a water collection pit is connected with the aeration adjustment pool through a leachate pipe, and a rotary fan is connected with the aeration adjustment pool and an aeration pipe in the reinforced ecological pool through a pipeline. The system integrates garbage treatment and sewage treatment, has the environment beautifying function and treats rural garbage very well.

The invention discloses a preheating process of a dust remover for filtering combustible dusty gas. The preheating process comprises a dust remover cold-air exhausting period, a temperature rise period and a gas replacement-adjustment period and specifically comprises the steps of inputting high-temperature gas through a hot air pipeline to exhaust low-temperature gas in the dust remover in the cold-air exhausting period, entering the temperature rise period after the low-temperature gas is exhausted, raising the temperature to 330-1200 DEG C, carrying out gas replacement and adjustment, and entering a conventional filtering-dust removal process link after adjusting the oxygen content in the dust remover to a safety range in the gas replacement-adjustment period. The preheating process is novel and ingenious, has a good utilization effect in a booting preheating link of the dust remover, realizes the innovation of the preheating process of the high-temperature dust remover, is suitable for preheating the dust remover for filtering the high-temperature and high-tar-content dusty gas and guarantees a good filtering effect, long service cycle and high economic benefit of a filter core.

The present invention discloses a circulating fluidized bed flue gas desulfurization apparatus, which comprises a reaction tower and a dust remover, wherein the reaction tower and the dust remover are communicated through an outlet flue channel, the reaction tower and the outlet flue channel are communicated through a settler, the settler forms a closed shield covering on the outlet channel of the reaction tower, an ash blocking baffle is fixedly arranged inside the settler and blocks above the free end of the outlet channel, a gap for communicating the closed shield and the outlet channel is formed between the ash blocking baffle and the free end, the outlet channel is circumferentially provided with an anti-backmixing plate, and an opening channel is formed between the anti-backmixing plate and the ash blocking baffle, and obliquely and downwardly extends. According to the present invention, with the ash blocking baffle arranged inside the settler and the anti-backmixing plate arranged on the reaction tower, the two flue gas dust fall can be achieved, the dust concentration of the flue gas entering the dust remover can be reduced, and the work load of the dust remover can be reduced.

The invention discloses an industrial gas pipeline online monitoring and early warning system based on cloud deployment, which comprises an on-site sensing layer, a data transmission layer, a data processing and logical operation layer and an application layer, and is characterized in that the on-site sensing layer consists of a plurality of on-site sensors; the data transmission layer is composedof a wireless transmission module; the data processing and logical operation layer is composed of a data processing module, a message queue server, a Web server, a cache server, a database server anda cloud platform. The application layer is composed of a mobile phone terminal and a computer terminal. According to the invention, online monitoring and early warning of each point location of a gaspipeline can be realized, safety accidents are avoided, and the whole system has the functions of real-time data display, sensor concentration change trend, historical data query and the like; through the advanced Internet of Things and cloud platform technology, enterprise investment construction and operation and maintenance cost is reduced, and enterprise management personnel can convenientlymaster the carbon monoxide concentration change condition of the gas pipeline in real time.

The invention belongs to the technical field of sheet metal production and relates to a production method for a stainless steel film plate. The production method comprises the following steps: performing surface cleaning and surface activating treatment on a stainless steel roll and a lower-layer galvanized coil (or aluminum roll) and then coating a layer of liquid macromolecule resin by using a roll coater; using a middle T-shaped drying oven for drying the strip and the macromolecule resin, compounding upper and lower layers by using a compounding unit and cooling by using a cooling unit; lastly, trimming, smoothening and coiling for collecting. The invention has the beneficial effects: due to the application of a three-layer type structure and the T-shaped drying oven, the workshop space is reasonably utilized, the layout of the whole production line is more compact and reasonable, the length of the production line is saved and the investment cost and the production cost are saved.

The invention discloses a distribution network distributed DTU differential protection system based on 5G communication, which comprises a ring network unit, the ring network unit comprises a distribution network-based distributed DTU, the distributed DTU comprises a DTU public unit and a DTU interval unit, and the DTU public unit integrates a Beidou / GPS function and provides a PPS pulse per second synchronous bus with a subtle error to the outside. The DTU interval units are accessed to a synchronous bus, and different DTU interval units are accessed to a 5G base station through a process layer switch and a 5G CPE to form an end-to-end communication 5G process layer network. The system is designed based on a distribution network distributed DTU product, depends on the high-reliability low-delay communication characteristic of 5G, adopts a synchronization algorithm based on Beidou / GPS pulse per second, realizes end-to-end data transmission through an SV / GOOSE protocol of the IEC61850 standard, and realizes a rapid differential protection function based on a 5G wireless network by depending on a split-phase current longitudinal differential protection principle.

The invention provides a cooling water emergency water supply system and method. The system comprises a high-position transfer water tank, an engine control panel, a water supply pump, a low-positionwater storage pool and a water supply pipeline. The elevation of the high-position transfer water tank meets the water pressure required by the emergency water supply to a user. The size of the high-position transfer water tank meets the requirement for at least storing 1 minute of emergency water consumption. A high-position water tank water outlet pipe and a conventional circulating cooling water supply pipe are connected with a user water inlet pipe. The user water inlet pipe supplies water to the user. A check valve is arranged on the high-position water tank water outlet pipe. A pressuresensor is arranged on the conventional circulating cooling water supply pipe. The pressure sensor is connected with the engine control panel through a circuit. The engine control panel is connected with a water supply pump through a circuit. A water outlet of the low-position water storage pool is connected with a water inlet of the water supply pump. A water outlet of the water supply pump is connected with a water inlet of the high-position transfer water tank. The system is safe, stable and convenient to maintain; and the volume of the high-position transfer water tank is small, the volumeof a supporting system of the high-position transfer water tank is smaller, and therefore flexibility of construction is greatly improved.

The invention provides an automatic temperature-control cooling system based on a high-temperature storage tank. The automatic temperature-control cooling system comprises a cooling air-duct unit and a cooling temperature automatic-control unit. The cooling air-duct unit comprises a left cooling air-duct unit body and a right cooling air-duct unit body which are symmetrically and oppositely arranged, and the cooling temperature automatic-control unit comprises a total controller and a plurality of temperature measuring points. The automatic temperature-control cooling system based on the high-temperature storage tank has the advantages that cooling air ducts are laterally and bilaterally arranged on a concrete layer based on the high-temperature storage tank, outlets of the air ducts are raised up, and through the stack effect, air automatically flows past the cooling air ducts; and meanwhile the temperature measuring points are arranged on a foundation, the cooling air quantity is automatically controlled in an interlocked mode, and the cooling effect is ensured. The automatic temperature-control cooling system based on the high-temperature storage tank achieves a reliable cooling effect for the foundation, improves service performance of the concrete foundation and prolongs the service life of the concrete foundation; and meanwhile the system is low in investment construction cost and basically has no operating cost.

The invention relates to a multilayer multi-column truss dam-type supporting system used in the field of wind power generation. Each layer of truss combined connecting transverse beams of the system is respectively connected with truss combined supporting tower columns at different heights to form a vertical unit body. Taking one vertical unit body as a unit and the truss combined supporting tower columns as connecting points, two or more same vertical unit bodies are sequentially and transversely connected in forward and reverse directions to form the dam-type supporting system. By adopting the wind energy attribute that wind speed is increased with height and the wind energy distribution rule that density is increased with height, the operation during wind energy obtaining is more safe and stable and the system is suitable for use in areas with stable wind directions in a whole year. The structure of the invention is suitable for horizontal-axis wind turbines, inclined-axis wind turbines and vertical-axis wind turbines. By adopting the structure, the invention has the advantages that the high-altitude wind energy can be conveniently captured, the wind energy utilization space is promoted, the investment and the construction cost are reduced and the land use cost is saved.

The invention relates to a biological contact oxidation process and provides a method for wastewater treatment by utilizing a KM biological contact oxidation process. The method is characterized in that a biological belt and BM (beneficial microorganism) filler are used as carriers, a biological strain with a specific function is immobilized on the biological belt and BM filler, and a modern biological contact oxidation process is combined. By using the method provided by the invention, the removal rates of various pollutants especially ammonia nitrogen by the biological contact oxidation process are greatly improved, the problem of poor ammonia nitrogen removal effect is solved, the effluent stably reaches the national pollutant discharge standard of wastewater treatment plants, and boththe operation cost and investment cost are lower.

The invention discloses a novel energy output analog application system which comprises a novel energy output analog device, an energy storage battery device, a capacitance device, a reserving interface device, a local load device and an upper computer. The novel energy output analog device, the energy storage battery device, the capacitance device, the reserving interface device and the local load device are respectively connected to the same alternating-current bus, all the connected device on the alternating-current bus is connected with the upper computer, wherein the novel energy output analog device is used for imitating the output situation of the novel energy, and the upper computer is used for monitoring and managing all the connected devices on the alternating-current bus. The novel energy output analog application system is low in investment and construction cost, simple and flexible in experimental operation, and can be widely applied to distributed power generation and micro network system experimental research.

The invention discloses a multi-fan floating system moored by soft rigid arm. The system is characterized in that a rotating tower is arranged on a fixed structure and can freely rotate around the vertical axis of the fixed structure, the front end of a yoke frame is connected with the rotating tower through a universal joint, the rear end of the yoke frame is hinged to the bottom end of a mooringleg through the universal joint, a ballast weight is arranged on the yoke frame, the top of the mooring leg is connected to the front end of the mooring support through the universal joint and a thrust bearing, the mooring support is fixed to the front end of a floating type draught fan foundation, a dynamic cable is installed between the floating type draught fan foundation and the rotating control tower, and two draught fan towers are arranged at the rear end of the floating type draught fan foundation, and a wind turbine generator is arranged at the top of each fan tower. The system is simple in structure, stable in operation, low in investment and construction cost, high in floating foundation constraint force and capable of limiting the movement of the floating fan under the environmental load, so that the floating fan has stable windage performance, and the power generation efficiency is further improved.

The invention discloses a low temperature denitration reactor, belonging to the technical field of low temperature flue gas denitration. The invention is mainly to provide the denitration reactor for low temperature denitration technology by a new catalysis method. The reactor is characterized by comprising a vertically installed cuboid-shaped denitration reactor main body, wherein a horizontal flue gas inlet is arranged in the side lower part of the main body, a horizontal flue gas outlet is arranged in the side upper part, and a renewable liquid outlet is arranged at the bottom; a second denitration catalyst packing grid frame, a first denitration catalyst packing grid frame and a preprocessing packing grid frame are arranged inside a main body from top to bottom; a spraying device is arranged above the second and first denitration catalyst packing grid frames and the preprocessing packing grid frame; and a manhole is arranged at the upper side wall of the main body. The reactor integrates flue gas pretreatment, denitration main reaction and catalyst regeneration, has the advantages of convenient operation and small occupied area, and is mainly used for flue gas treatment by using a low-temperature denitration catalyst.

The invention discloses a bubbling vaporizer. According to the bubbling vaporizer, a disc-shaped partition is fixedly arranged in a horizontal type tank body in the direction of the cross section of the horizontal type tank body; a disc-shaped left partition with a notch in the upper part is fixedly arranged at the left side of the disc-shaped partition so as to divide the interior of the horizontal type tank body into a left residual liquid cavity and a left vaporization cavity, and a disc-shaped right partition with a notch in the upper part is fixedly arranged at the right side of the disc-shaped partition so as to divide the interior of the horizontal type tank body into a right vaporization cavity and a right residual liquid cavity; a rectangular-thin-plate-shaped left air disc and a rectangular-thin-plate-shaped right air disc are fixedly arranged at the lower part of the left vaporization cavity and the lower part of the right vaporization cavity in the horizontal direction correspondingly; the left air disc and the right air disc are each provided with a plurality of through holes with the diameter of 5-15mm at intervals; an air pipe enters the left vaporization cavity from the outer top of the horizontal type tank body to reach the position below the left air disc at the lower part of the left vaporization cavity; and a gas phase pipe from one side of the left vaporization cavity penetrates through the disc-shaped partition from the upper part of the disc-shaped partition to enter the right vaporization cavity to reach the position below the right air disc at the lower part of the right vaporization cavity. The bubbling vaporizer has the advantages that air-light hydrocarbon mixing gas with a higher calorific value of 8000-9000kcal / m<3> can be produced.