89 results about "Temperature stratification" patented technology

A method of exterminating organisms is provided utilizing heated circulating air. First, a determination is made as to which enclosed areas of the building or other structure are to undergo extermination. This step defines an application zone. Next, a desired elevated temperature limit is established for heated air that is to be circulated through the application zone. Heaters are provided in airflow communication with the application zone, and circulation fans are positioned throughout the application zone to move the heated air for proper heat distribution. The heaters utilize an amount of recirculated air already present in the application zone to cut down on the amount of energy needed to raise the air temperature within the application zone towards the desired elevated temperature limit, and to eliminate the need for high CFM airflow heaters to achieve air temperature elevation. The temperature at various nodes within the application zone may be monitored to allow personnel to redirect circulating airflow within the application zone to balance out areas of higher air temperature with areas of lower air temperature. The method takes advantage of convection heat transfer to raise the temperature evenly within an application zone, minimizing temperature stratification which could result in ineffective pest extermination and / or damage to equipment and facilities.

A method and related ultrasonic meter identify and correct for transit time errors such as peak switch errors. The method includes calculating values for a set of diagnostics from measurements of the fluid flow, including transit time measurements. Based on the values for the diagnostics, and whether and how they fall outside of their respective ranges, the meter can identify a variety of problems with the meter or fluid flow, such as whether there has been an intermittent peak switch, a permanent peak switch, or the presence of noise, velocity pulsation in the fluid flow, temperature stratification, or other problem. In the event there is a problem with the meter, the meter self-tunes in order to minimize the chances of the problem happening again.

A refrigerator includes a fresh food stirring fan assembly arranged within a fresh food compartment. The stirring fan assembly functions to recirculate air in order to minimize temperature stratification in the fresh food compartment. The stirring fan assembly preferably incorporates a filter to remove airborne debris and absorb odors. In accordance with one preferred embodiment of the invention, the fresh food stirring fan is operated whenever a damper controlling an inlet flow of cooling air to the fresh food compartment is in a closed position.

A refrigerator includes a fresh food stirring fan assembly arranged within a fresh food compartment. The stirring fan assembly functions to recirculate air in order to minimize temperature stratification in the fresh food compartment. The stirring fan assembly preferably incorporates a filter to remove airborne debris and absorb odors. In accordance with one preferred embodiment of the invention, the fresh food stirring fan is operated whenever a damper controlling an inlet flow of cooling air to the fresh food compartment is in a closed position.

The invention discloses a seedling raising method for oil-used peony seeds. The method comprises the steps of (1) selecting seeds; (2) soaking the seeds for disinfecting; (3) treating the oil-used peony seeds of step (2) by using cold plasma generated by atmospheric dielectric barrier discharge for 50-60 seconds; (4) preparing a treatment solution containing 0.25mg / L of gibberellin, 2mg / L of indoleacetic acid and 3mg / L of calcium chloride; (5) performing variable temperature stratification: mixing the oil-used peony seeds treated in step (3) with fine sand, perlite and vermiculite in a ratio of 1:(3-5):(1-2):(1-2), adjusting the humidity to 40-50%, and performing variable temperature stratification in a constant temperature incubator according to three stages; (6) sowing; and (7) performing seedling management. By adopting the seedling raising method for the oil-used peony seeds, seed dormancy can be effectively broken during breeding, so that seeds are quickly germinated, germination of seeds is accelerated, the emergence rate of seeds is improved, the emergence time is shortened, the emergence is even, and the growth indexes of young seedlings such as fresh weight, plant height, root system and the like are improved to different degrees; and the method does not have pollution to the environment.

A method and related ultrasonic meter identify and correct for transit time errors such as peak switch errors. The method includes calculating values for a set of diagnostics from measurements of the fluid flow, including transit time measurements. Based on the values for the diagnostics, and whether and how they fall outside of their respective ranges, the meter can identify a variety of problems with the meter or fluid flow, such as whether there has been an intermittent peak switch, a permanent peak switch, or the presence of noise, velocity pulsation in the fluid flow, temperature stratification, of other problem. In the event there is a problem with the meter, the meter self-tunes in order to minimize the chances of the problem happening again.

The invention belongs to the technical field of plant budding, particularly relates to a method for stopping Taxus chinensis var. mairei seed dormancy, and solves the technical problem of slow budding, low budding rate and the like. The method includes the steps of A, soaking Taxus chinensis var. mairei seeds in sulfuric acid 55-65% in mass concentration for 2-4 hours, and washing the soaked seeds with flow water for 12-36 hours; B, soaking the acid etched seeds in pre-prepared solution for at least 3 hours, and soaking the soaked seeds in clean water for at least 3 hours; and C, performing low-temperature stratification or variable-temperature stratification to the seeds soaked by clean water. The method has the advantages that the method is time-saving, effective and economical, the problems that dormancy is deep, budding is difficult and budding rate is low are solved, standards are provided for seed seedling market circulation, seed quality is guaranteed, and great significance is brought to breeding cultivation development of Taxus chinensis var. mairei.

The invention discloses an efficient temperature stratification-type water energy-storage water-storage device, and relates to the technical filed of water energy storage, for solving the technical issue of improving the energy storage efficiency. The device comprises a water storage groove and tubular water distributors, and is characterized in that the upper part and the lower part of the inner cavity of the water storage groove are respectively provided with a water seepage flat-type porous medium plate; the plate surface of each porous medium plate is in parallel with the water level, and the periphery of each porous medium plate is jointed with the inner wall of the water storage groove and is water-proof and sealed; the tubular water distributors are two, and are all distributed in the inner cavity of the water storage groove, wherein one tubular water distributor is positioned above the porous medium plate at the upper part, and the other tubular water distributor is positioned below the porous medium plate at the lower part; and the opening of the tubular water distributor at the upper part is upwards, the opening of the tubular water distributor faces downwards, and the two tubular water distributors are communicated with the outer part of the water storage groove through a pipeline. The device provided by the invention has high energy storage efficiency.

A process for etching the surfaces of semiconductor substrates utilizes a texturing tank which introduces a process fluid through a circulating system. The process fluid is heated to a desired temperature and maintained at a desired concentration prior to entering a processing area where laminar flow is produced to more quickly and uniformly roughen the surface of semiconductor substrates. The texturing tank permits removal of bubbles and eliminates temperature stratification in the processing area.

The invention discloses a Tilia miqueliana seedling raising method, which includes seed collection, drying in the shade, soaking, multi-substrate variable temperature stratification and transplanting. Seedlings of Tilia miqueliana raised by the method break through dormancy in about 50 days, are high in survival rate and emergence percentage, and have developed roots.

An efficient temperature stratification heat exchange energy storage water tank with internally arranged phase change thermal storage materials comprises an energy storage tank body, layered heat exchange coils, inlet and outlet baffle plates and thermal storage balls, wherein the phase change thermal storage materials are arranged inside the thermal storage balls, a gas exhaust valve and a blow-down valve are arranged on the energy storage tank body, a water inlet of a heat exchanger, an inlet of a hot water pipe coming from a heat collector, and hot water outlets heading to users are located on the upper portion of the energy storage tank body, and a water outlet of the heat exchanger, low-temperature water inlets from the users, and low-temperature water outlets heading to the heat collector are located on the lower portion of the energy storage tank body. The efficient temperature stratification heat exchange energy storage water tank with the internally arranged phase change thermal storage materials is characterized in that the heat exchange coils are arranged in three layers inside the energy storage tank body and divide the energy storage tank body into three layers, the three layers are a high temperature region, a medium temperature region and a low temperature region sequentially from top to bottom, the phase change thermal storage materials are encapsulated inside the small thermal storage balls, a certain space is left in each thermal storage ball for size changes, when heat is stored, the phase change thermal storage materials turn into the liquid phase from the solid phase, and when the heat is discharged, the phase change thermal storage materials change reversely. All the inlets and the outlets directly connected with the energy storage tank body are provided with the inlet and outlet baffle plates.

The invention belongs to the technical field of cultivation of taxus mairei, and in particular relates to a method of growing seedlings of taxus mairei. The method comprises the steps of: harvesting and storing seeds, selecting and treating a garden, sowing, exposing grass and shading, managing seedling, carrying out pest control, outplanting and grading nursery stock. According to the method of growing seedlings of taxus mairei provided by the invention, by adopting seeds subjected to sand storage, humidification and natural temperature stratification, the integrated germination rate is more than 95%. Through reasonably designing a process for exposing grass and shading, managing seedling, and carrying out pest control, the cost for growing the seedlings of the taxus mairei is reduced, and the integrated survival rate is increased.

The invention relates to a water temperature stratification dynamic experimental device, which is characterized by including an external recycle pool, a plurality of internal recycle water tanks positioned downstream the external recycle pool, a distribution-type water supply control system positioned downstream the internal recycle water tanks, an experiment water channel positioned downstream the distribution-type water supply control system, and a backwater system positioned downstream the experiment water channel. The water temperature stratification dynamic experimental device realizes cyclic utilization of heated water, operates stably and reliably, is low in energy consumption, is little interfered by the outside, greatly prolongs the effective experimental period, and can be used in simulation experiments for temperature stratification of deep reservoirs and for research on related improvement measures.

The invention provides a novel waste aluminum smelting furnace. The novel waste aluminum smelting furnace comprises a main smelting chamber and a lateral well chamber arranged on the lateral part of the main smelting chamber, wherein the lateral well chamber comprises a feeding area and a pumping area which are communicated with each other; the feeding area and the pumping area are both communicated with the main smelting chamber; and the pumping area is provided with a circulating pump. The molten aluminum is pushed by the circulating pump to repeatedly circulate around the main smelting chamber, the feeding area and the pumping area, and because the molten aluminum quickly flowing can allows the charged materials to be deposited in the molten aluminum quickly, the oxidation burning loss is reduced, the metal recovery rate is improved and the yield and the utilization rate of fuel are also improved indirectly; and in addition, due to the pushing of the circulating pump, the texture of the molten aluminum is uniform in three chambers, and simultaneously the temperature stratification is reduced or eliminated.

The invention relates to a method for natural temperature stratification in a cold accumulation water tank and a device for uniformly distributing and collecting water. The method and the device are characterized in that a cylindrical water distributer is formed in a high position center of the cold accumulation water tank, and is connected and supported at the position by using a water inlet pipe, the top of the water distributer is close to a water line of the water tank as much as possible; a cylindrical water collector with the same structure as the cylindrical water distributor is arranged at a lower position center of the water tank, and is connected and supported at the position by using a water outlet pipe, the bottom of the water collector is close to the bottom of the water tank as much as possible; the water flow is distributed and the water flow direction is regulated by using flow equalizing pore plates embedded in the cylindrical water distributor and the cylindrical water collector, in the way, the water enters the water tank in the horizontal direction, the water flow rate is reduced, the cold accumulation water tank disturbance caused by the water flow is reduced, the water flow flows into the cold accumulation water tank evenly and slowly in a manner of density current, so as to form the natural temperature stratification. The water flow is distributed and the water flow direction is regulated by using the flow equalizing pore plates embedded in the cylindrical water distributor and the cylindrical water collector, in the way, the water flow enters the water tank in the horizontal direction, so as to form the natural temperature stratification. The method and the device related by the invention have the beneficial effects of simple structure, low cost and uniform temperature stratification of the cold accumulation water tank.

The invention provides a high-temperature stratification turnover box seedling-raising method for seeds of carya illinoensis. The method comprises the following steps of: a) pretreatment of seeds; b) stratification turnover box technology; c) high-temperature stratification; and d) sorting and seeding. By the method, the germination rate of seeds of carya illinoensis is improved, and up to 90 percent; and the seeding rate is lowered, the conventional autumn seeding or sand storage stratification is replaced by a turnover box high-temperature stratification method, and the germination stage of seeds is obviously shortened. The method has the advantages of shortening the germination stage of seeds of carya illinoensis by adopting the high-temperature treatment method, enforcing seeds of carya illinoensis to bud quickly, highly efficiently and orderly and improving the seedling emergence rate of seedlings of carya illinoensis, and is simple in operation and low in cost.

The invention discloses a cultivation method for breaking through woodbine seed dormancy and for and improving survival rate of seedlings, which mainly comprises the steps of seed sorting, soaking treatment of seeds, variable-temperature stratification and transplanting. By comprehensively utilizing the technologies for breaking through the woodbine seed dormancy such as soaking, controlling by agrowth regulator, variable-temperature stratification and the like, the sprouting time of the woodbine seeds is greatly shortened, seedlings of the woodbine seeds which are obtained through the method respectively have developed root systems and grow fine, the growth speed is fast, and the survival rate is high.

A temperature measuring device (1) with a thermometer (2) has a plurality of temperature sensors (3) on one side (10), which function on an electrical basis. The thermometer (2) is immersed in a container or beaker (4) set up in a usage position on a heating plate (102) of a magnetic stirrer (100) and in a medium (5) present therein. The plurality of temperature sensors (3) are arranged spaced apart from one other vertically on the temperature measuring device (1), and are immersed in the medium (5) at different heights in the usage position. It is therefore possible firstly to recognize a temperature stratification inside the medium (5), and secondly, to detect level changes of the medium (5) in the interior of the container (4).

The invention discloses a method for accelerating germination of paris polyphylla seeds. The method comprises the following steps: step one, taking paris polyphylla seeds and soaking the paris polyphylla seeds in a gibberellin solution in mass-volume concentration of 0.1-0.5% at the temperature of 20-30 DEG C; step two, carrying out ultrasonic treatment on the paris polyphylla seeds soaked by gibberellins; step three, carrying out dehydration treatment on the paris polyphylla seeds subjected to ultrasonic treatment; and step four, carrying out fluctuating-temperature stratification treatment on the paris polyphylla seeds subjected to the dehydration treatment: firstly carrying out stratification on the paris polyphylla seeds for a period of time under the constant-temperature condition at the temperature of 5 DEG C, then carrying out stratification on the paris polyphylla seeds for a period of time under the constant-temperature condition at the temperature of 25 DEG C, and finally carrying out stratification of the paris polyphylla seeds for a period of time under the constant-temperature condition at the temperature of 5 DEG C. According to the method, the germination rate of the paris polyphylla seeds after one month is 24%; the germination rate of the paris polyphylla seeds after two months is 86%; the uniformity of the emerged seedlings is high; the number of normal seedlings accounts for 95% of the number of germinated seeds; the quality of the paris polyphylla seedlings is greatly improved.

The invention provides a method for enhancing germination rate of Vitex negundo var.heterophylla Rehd. seeds. The method comprises selecting half-brown wide Vitex negundo var.heterophylla Rehd. seeds gathered from September 10th to September 20th, and braking the seed dormancy to promote seed germination through gibberellin solution treatment method or low-temperature stratification treatment method. The germination rate can reach 46.88% if the Vitex negundo var.heterophylla Rehd. seeds are gathered in the optimum period according to the invention method, and the germination rate reaches as high as 70.83% or 72.22% if the gathered Vitex negundo var.heterophylla Rehd. seeds in the optimum period are further treated by gibberellin solution treatment method or low-temperature stratification treatment method. The seeds have the advantages of germination tidiness, low germination time and strong germination. The method of the invention is low in cost and convenient in operation, which is advantageous for development, utilization and large area popularization of wild Vitex negundo var.heterophylla Rehd.

Provided are devices and methods for discharging pretreated biomass from a pressurized reactor. Pretreated, hot biomass is added under high pressure at the top of a discharge vessel, which is partially filled with water or aqueous solution. The vessel comprises water jets situated on its sides through which water or aqueous solution is injected in order to establish a strong turbulence in the lower part of the vessel. This turbulence, preferably a vortex turbulence or “hydrocyclone,” blends biomass and water and disintegrates any clumped material prior to its ejection at high speed as a slurry through an orifice or valve at the bottom of the vessel. A stable temperature stratification is established within the discharge vessel, whereby hot water remains at the top of the vessel, reducing heat and steam loss from the pretreatment reactor.

The invention relates to the wet oxidation desulfurization, mainly made of ortho-phthalic anhydride, oleum, ortho-phthalic anhydride, dicarbonic diamide, cobalt chloride, amchlor, titanic chloride, adding or absorbing multi desulfurizer, Ca(OH)2, demineralized water, through dynamic normal pressure heating up and mixing, static constant temperature stratification and activating absorption, greatly shorten reaction cycle, getting rid of the uneven reaction temperature, uneven reaction stratification and degree, with the accelerant being solid particle or activated solution. It applies to wide range of fields, with percentage of desulfurization over 98%. It is particularly suitable for old process remodeling and improvement.

The invention discloses a method for cultivating Taxus. The technical scheme of the method comprises the following steps of: A, seed collection: performing seed collection, and treating seed coats ofseeds; B, seed storage: during varying-temperature stratification treatment, performing stratification on the seeds at a low temperature firstly, then conducting dust deposition at a warm temperature,and finally performing stratification at a low temperature; C, seedbed preparation: selecting a seedling raising field, applying base fertilizer, mixing the base fertilizer and soil of the seedling raising field evenly through a rake repeatedly, and preparing the seedling raising field into a nursery field; D, seed germination: soaking the seeds in a disinfectant, and then performing germinationby using a plant hormone; E, sowing: performing suppression to obtain sowing ditches in the nursery field, and performing spot seeding according to a plant spacing and a row spacing; and F, field management: performing daily management of irrigation, topdressing and diseases and pests. Through the method, the effect of improvement of the sprouting rate of the seeds is achieved.

The invention relates to a temperature stratification type heat accumulating / releasing device, and belongs to the technical field of water heat accumulation. The device is characterized by comprising a water inlet, a heat accumulating tank, a heat accumulating tank cover, an inlet water distributor, an outlet water collector, a drain outlet, an upper flow equalizing plate, a lower flow equalizing plate, a heat exchange medium water collecting header, a heat exchange medium water separating header, a medium heat exchange pipe, a highest liquid level sensor, a lowest liquid level sensor and a liquid temperature sensor. The heat accumulating tank is divided into four areas of an upper flow stabilizing area, an air layer area, a main heat accumulating area and a lower flow stabilizing area. The heat exchange medium water collecting header and the heat exchange medium water separating header are two-dimensional spiral coils, and are mounted parallel to a baseplate of the heat accumulating tank; and the medium heat exchange pipe is perpendicular to the heat exchange medium water collecting header and the heat exchange medium water separating header. A heat accumulating fluid enters the heat accumulating tank from the inlet water distributor, and flows out from the tank from the outlet water collector to form a stable piston flow from top to bottom in the main heat accumulating area in the tank; and a heat exchange medium flows from bottom to top in the medium heat exchange pipe to form a totally upstream flowing mode with the heat accumulating fluid.

A pressure vessel refuelling system enables fast fill refuelling of CNG fuel tanks by inducing a stratification of gas temperatures inside a tank during refuelling, then re-cycling a portion of the relatively warmer gas out of the tank during refuelling and back to a gas chiller. The system includes a pressure vessel having a lower end, a first gas port and a second gas port, wherein the second gas port is positioned above the lower end of the pressure vessel; and a cooling circuit connecting the first gas port with the second gas port; whereby gas flowing from an interior cavity of the pressure vessel through the second gas port is cooled in the cooling circuit before returning to the pressure vessel through the first gas port; and whereby a temperature of gas inside the pressure vessel varies from a first temperature at a level of the lower end of the pressure vessel to a second temperature, which is higher than the first temperature, at a level of the second gas port.

The invention provides a method for preparing germinated brown rice by the repeated cold stress forcing method. The method comprises the following steps: placing the brown rice in low temperature solution to force cell tissues of the brown rice to accumulate reactive oxygen; and promoting content of soluble saccharide, free amino acid and polyphenol material to increase. In addition, to prevent excessive reactive oxygen from doing harm to cells, the repeated and short-time low temperature forcing and high temperature stratification are alternatively employed to cause the reactive oxygen to begenerated slowly; as a result, not only high soluble saccharide, free amino acid and polyphenol material are obtained, but also germination percentage of the brown rice is improved; and finally, lower temperature is employed to force the cell membrane of the brown rice to be damaged, so that the soluble sugar and the free amino are extravasated and the new product of the germinated brown rice with good mouthfeel can be produced.

The invention provides a water distribution device in a temperature stratification type chilled water storage system and belongs to the field of energy storage. In the water distribution device, the chilled water storage system comprises a cool storage pool, the water distribution device comprises a water distribution barrel which can sleeve the cool storage pool, a clamping plate is arranged in the water distribution barrel and fixed to the water distribution barrel, fixing strips are arranged between the clamping plate and the water distribution barrel, one end of each fixing strip is fixedly connected to the inner wall of the water distribution barrel, the other end of each fixing strip is fixedly connected to the clamping plate, a straight slot is formed between two adjacent fixing strips, the water distribution device further comprises sponge which is composed of a water absorption portion and a water guide portion, one end of the water guide portion is provided with strip openings which are matched with the fixing strips, the water guide portion between every two adjacent strip openings extends into the corresponding straight slot and clings to the inner wall of the cool storage pool, the clamping plate is matched with the water absorption portion in size, and one side of the water absorption portion abuts against the clamping plate. By the water distribution device, water flow can flow into the cool storage pool uniformly, stably and slowly.

The invention relates to a heating device, in particular to a cold air surrounding type hot air decentralized heating device and aims to solve the problems that traditional heating modes arranged in a factory building are difficult to arrange, operating temperature of a working area is difficult to meet requirements and vertical temperature stratification occurs easily due to the fact that the factory building is large. The cold air surrounding type hot air decentralized heating device is characterized in that a first air inlet and a first air outlet are processed in the top surface and the bottom surface of a shell respectively, the top of a separating barrel is fixedly connected to the inner wall of the shell, the bottom of the separating barrel is fixedly connected to the bottom surface of the shell and communicated with the first air outlet, a plurality of air opening flow deflectors are arranged in the separating barrel, the outer wall of the separating barrel and the shell form a cyclone chamber, the sidewall of the shell is provided with a second air inlet, a fresh air pipeline outside the shell is communicated with the second air inlet, a fresh air fan is arranged in the fresh air pipeline, the bottom of the cyclone chamber is provided with a second air outlet, the wall of the separating barrel is provided with at least one reserved opening, and an air return bypass valve is arranged in each reserved opening. The cold air surrounding type hot air decentralized heating device is used for high space building heating.

The invention relates to the field of power line equipment maintenance, and discloses an adjacent grid temperature stratification detail forecast method and system. The method and the system aim to increase the vertical temperature resolution of a point where swinging occurs easily and are high in precision, high in computation speed and wide in range. The method includes the steps that firstly, according to the ground temperature lapse rate and related temperature data, the temperatures at the elevations of ground above mean sea-level, corresponding to a to-be-analyzed swinging point in the vertical direction, of adjacent grid points in a corresponding series of grids are calculated; then, according to the calculated values of the temperatures, the temperature at the elevation of ground above mean sea-level of the to-be-analyzed swinging point is calculated with a bilinear interpolation method; meanwhile, according to the vertical temperature lapse rate between every two adjacent grids of related grid points, the corresponding vertical temperature lapse rate, between the adjacent grids, of the to-be-analyzed swinging point is calculated with a weighted average method; finally, according to the temperature at the elevation of ground above mean sea-level of the to-be-analyzed swinging point and the vertical temperature lapse rate between every two adjacent grids, the temperature data of corresponding detailed layers is calculated.