51results about How to "Increase the evaporation surface area" patented technology

Fuel delivery system for an internal combustion engine comprising a method and apparatus for generating and delivering a homogeneous charge with a variable fuel / air ratio which relies on fuel-absorbent, air-permeable evaporative wick membranes in a primary mixing region to which a portion of thermally-regulated air from an air dividing region has come. A single moving control element is used to control the quantity of in-rushing air in the primary mixing region, and therefore the amount of fuel rich air produced in this primary mixing region, and at the same time this single moving control element modulates both the quantity of fuel rich air and the quantity of regular fuel-free combustion air which are brought together in a secondary mixing region where they combine in the desired ratio to form a homogeneous charge with a variable fuel / air ratio. The use of a single moving control element allows extremely economical construction. A further advantage of this method is extremely rapid and accurate control of the fuel / fair ratio of the charge which is generated. The method can be used to safely and reliably generate clean-burning combustible mixtures for internal combustion engines, and to cool supercharged and turbocharged airstreams. Electronic control means are also provided to calculate the correct fuel / air ration under various engine operating and environmental conditions and so that spark plug timing and electromechanical valve timing can be adjusted in concert with adjustments to the fuel / fair ratio so that optimum fuel economy and emissions performance is obtained.

A process for preparing Chinese medicines includes such steps as extracting, solid-liquid separating, heating for sterilizing, and vacuum concentrating. Its complete set of apparatuses is composed of extractor, solid-liquid separator, sterilizer and vacuum concentrating unit. Its advantages are high automation level, productivity and quality of product, and low energy consumption.

The invention discloses a method and device for increasing the impurity removal amount of volatile impurities in an electron beam smelting process. According to the invention, in an electron beam smelting process, the surface of a silicon melt can be fluctuated by changing the melting mode of an electron beam, so that the evaporation surface area is increased, the evaporation surface area of a melt interface is increased, and the evaporation amount of impurities in unit time is increased; a graphite substrate is placed at the bottom of a smelting crucible, and then the temperature distributionat the bottom of the silicon melt is changed, so that flowing of the silicon melt at the bottom of the smelting crucible is promoted, convection occurs in the silicon melt, and then melt exchange between the silicon melt at the bottom and the silicon melt at the top is accelerated. Through the change of the melting mode and the experimental device of the electron beam, the evaporation surface area of the melt is increased, the evaporation amount of the impurities in unit time is increased, and therefore, the problems that a silicon melt is low in impurity evaporation amount, long in melting time, large in silicon material loss and high in cost in an impurity removal process of volatile impurities are solved.

The invention discloses a hot air-penetration external circulating-type coal sample dehumidification device having an automatic sample feeding / taking function. The hot air-penetration external circulating-type coal sample dehumidification device having an automatic sample feeding / taking function comprises a case, a controller, a sample feeding / taking mechanism, a fan, a division plate, a gas heater, and one or more sample carrying mechanism, wherein the fan, the division plate, the gas heater and the one or more sample loading mechanisms are arranged in the case which is inclosed. The case is divided into an upper chamber and a lower chamber by the division plate. The top or a side of the upper chamber is provided with an air outlet. The bottom or a side of the lower chamber is provided with an air inlet. The fan is located in the upper chamber and is close to the air outlet. The gas heater is located in the lower chamber. Each one of the one or more sample loading mechanisms comprises a coal sample tray for receiving coal samples and a coal sample support for collecting coal samples; the bottom of the coal sample tray is provided with at least one ventilation hole; the top of the coal sample tray is provided with a sealing part which is in a contact fit relationship with the division plate; and the coal sample support is located below the coal sample tray. The sample feeding / taking mechanism is connected to the one or more sample loading mechanisms and drives the one or more sample loading mechanisms to go up and down. The hot air-penetration external circulating-type coal sample dehumidification device having an automatic sample feeding / taking function has the advantages of simple structure, convenient operation, high dehumidification efficiency, low energy consumption, high sample preparation accuracy and low labor intensity.

The invention discloses a coal slurry dewatering and drying device and method. The device comprises a drying room and a coal slurry conveying device, a warm air machine and a negative pressure fan which are arranged inside the drying room. The coal slurry conveying device comprises a plurality of conveying belts arranged in a zigzag manner from top to bottom. A vibration feeder is arranged above the coal slurry inlet end of the uppermost conveying belt of the coal slurry conveying device. A feeding sealing door is formed in the top of the drying room. A discharging hopper is arranged below the coal slurry outlet end of the bottommost conveying belt of the coal slurry conveying device. A discharging sealing door is formed in the bottom of the drying room. The negative pressure fan and a warm air to atmosphere gate are arranged at the upper portion of the drying room. The hot air machine, a hot water inlet and outlet and the like are arranged at the lower portion of the drying room. The warm air to atmosphere gate is formed in the side wall of the upper portion of the drying room. The invention further discloses the coal slurry dewatering and drying method applied to the device. The device and method have the beneficial effects of saving energy and being environment-friendly, efficient, low in drying temperature, high in speed and efficiency, simple in structure and small in occupied area.

A tube-and-plate type compound heat exchange sheet and a method for manufacturing same. The tube-and-plate type compound heat exchange sheet comprises a coil pipe (1) formed by a shaped heat exchange pipe, and further comprises a heat transfer plate (2). The heat transfer plate (2) is provided with an accommodation groove (21). The shape of the accommodation groove (21) matches the shape of the coil pipe (1). The coil pipe (1) is placed in the accommodation groove (21). The gap between the coil pipe (1) and the accommodation groove (21) is filled with a thermally conductive bonding layer (3). The thermally conductive bonding layer (3) ensures full contact between the heat transfer plate (2) and the coil pipe (1), the coil pipe (1) producing a ribbed effect with the heat transfer plate (2), thereby increasing the effective heat exchange area. The heat transfer plate (2) can also drain cooling water to form a continuous water flow surface, thereby enlarging the evaporation surface area of the cooling water. The effective heat exchange area and the evaporation area of the cooling water are increased, improving heat exchange efficiency and also reducing condenser size.