34results about How to "Lower flow temperature" patented technology

A particulate toner composition is provided with toner resin particles containing a resin component, a colorant component, and optionally a charge control agent characterized in that the toner resin particles have a micro-serrated surface exhibiting a surface roughness index of greater than about 1.2. The novel toner particles are produced by employing a vaporizable plasticizer which is flashed off during processing.

The invention relates to a crystallinity low-melting point polyester fiber and a preparation method thereof; the crystallinity low-melting point polyester fiber is a belt core structure, wherein a belt layer is a low-melting-point polyester, and a core layer is PET; the low-melting point polyester fiber consists of terephthalic acid chain section, isophthalic acid chain section, 1, 3-propylene glycol chain section, dipropylene glycol chain section and molecular weight modifier, wherein the molecular weight modifier corresponding to the molecular weight modifier chain section is 1, 8-naphthalic acid, phthalic acid, 1, 2-cyclopentane dioctyl phthalate, 1, 2-cyclohexane dioctyl phthalate or corresponding dimethyl ester or diethyl ester. The preparation method includes low-melting-point polyester polymerization and belt core composite spinning, wherein post spinning adopts drafting-water washing technique, and drafting adopts oil bath drafting added with sodium sulfite; through rolling, cutting and drying, the crystallinity low-melting point polyester fiber is acquired. The crystallinity low-melting point polyester fiber prepared by the invention is low in melting point, and low in total content of acetaldehyde and acrolein.

A method of constructing self-powered air-conditioner comprises a convergent divergent nozzle where powered fan pushes air into said nozzle. While the pushed air accelerates toward the nozzle throat it becomes colder as air internal energy transformed into kinetic energy. An axial turbine installed within the nozzle throat extracts energy from the air in the nozzle and drives an electrical generator that provides electricity to the fan electric motor. Alternatively the turbine and fan are installed on common shaft, which could be the electric generator shaft. The cold air within the nozzle throat cools the nozzle throat skin, which serves as air-conditioner core. The cold nozzle skin is wrapped with coiled pipes in which liquid flows, becomes colder and this cold liquid flows away to heat exchanger where air is flowing through it and becomes colder. This cold air is then flows into spaces needed to be air-conditioned.

A cooling system is provided for automatic transmission torque converter assemblies having a housing shell and flex plate. The cooling system includes a housing cover having opposing exterior and interior surfaces that define a wall portion and a preferably circular base portion. The base portion is configured to attach to the flex plate, preferably by one or more stud members, to be rotated thereby. The wall portion extends from a periphery of the base portion and is configured to attach to the housing shell. The cooling system also includes a plurality of vane members positioned along the outer periphery of the base portion. The vane members are configured to increase convective dissipation of heat from the torque converter assembly to surrounding ambient air by increasing the heat transfer coefficient and surface area. Optimally, the vanes have a turbine fin configuration, but may alternatively have curved fin or a straight-fin configuration.

The invention relates to a method for preparing high-fluidity hydrophilic copolyester. A modified component Tween (or polysorbate, hereinafter referred to as Tween) and diol are mixed and beat in accordance with a certain mass ratio, and are added when polyester completes a esterification stage, and a certain mass of titanium transesterification catalyst is supplemented. The titanium transesterification catalyst has high catalytic activity, which can ensure the rapid and efficient transesterification reaction; the Tween and esters complete a transesterification process at lower temperature. After the transesterification reaction is completed, the high-fluidity hydrophilic copolyester is prepared by a polycondensation reaction. In a Tween molecular structure, an HO- [CH2CH2O] chain segment can be reacted with polyester ester to be connected to a polyester molecular chain; meanwhile, A aromatic ring of the polyester has large steric hindrance, and the HO-[CH2CH2O] cannot achieve all reactions, so that the generation of the side effects of branched cross-linking are avoided. The flexible hydrophilic polyester provided by the invention can be widely used for preparing a moisture absorbing and sweat releasing antistatic fiber as an intimate fabric.

The invention discloses a high-impact and high-flow polyvinyl chloride material and preparation method thereof. The material has good high-low temperature impact resistance and excellent processing fluidity, and is a composite material which takes the polyvinyl ethylene as the base material and is blended and modified. The material is specifically prepared from the following components in parts byweight: 100 parts of polyvinyl chloride resin, 2-5 parts of heat stabilizer, 1-3 parts of lubricant, 0.5-2.5 parts of processing auxiliary, and 5-20 parts of composite impact modifier. The polyvinylchloride modified material provided by the invention can be used for preparing various pieces through an injection molding way, the traditional ABS material with expensive price is replaced, and the polyvinyl chloride material can be used for wine external package and decorative materials with an electroplating demand.

The invention discloses an aging method for a high specific volume aluminum electrolytic capacitor, which comprises a plurality of process steps of clamping, energizing and aging at normal temperature, ventilation in an aging room, high temperature aging and constant temperature aging. Through the air convection device set in the room temperature cold air aging box, the temperature of the air flowing in the room temperature aging room is reduced, so that the temperature of the aluminum electrolytic capacitor itself is lowered during the normal temperature electrification process, so that the voltage can be over-added and quickly rise to the value required by the product process, so that the voltage can be boosted. The time has been shortened from 6 to 8 hours to 3 to 4 hours. Use this method to shorten the aging time of aluminum electrolytic capacitors by 50%, thereby saving 50% of electricity, and the boosting time is short, the leakage current is small, the electrical performance is good, the production cost of the product is greatly reduced, and the input cost is greatly reduced.

The invention relates to a device and a method for heating a liquid medium, in particular a mashing device, having a vessel which can be filled and emptied, a heater for heating the liquid medium, in particular the mash, with a heating medium, a temperature sensor for measuring the flow temperature of the heating medium, a temperature sensor for measuring the return temperature of the heating medium, a temperature sensor for measuring the temperature of the liquid medium, a control unit for controlling a heating rate, wherein the control unit is constructed in such a manner and the heating rate is controlled in such a manner that the logarithmic temperature difference between the heating medium and the respective current temperature of the liquid medium is kept substantially constant.

The invention relates to the technical field of PVC (polyvinyl chloride) modified materials, in particular to a transparent and environment-friendly PVC modified material and a preparation method thereof. The modified material PVC resin comprises the following raw materials by weight: 80-120 parts of PVC resin, 60-100 parts of a plasticizer, 1-3 parts of a heat stabilizer, and 0.5-1.5 parts of a lubricant. The plasticizer is a mixture of dioctyl terephthalate and diisononyl cyclohexane-1, 2-dicarboxylate in a weight ratio of 2-4:1. The heat stabilizer is a mixture composed of (RCOO)2Ba and (RCOO)2Zn in a mole ratio of 1.4-2.2:1, wherein R is alkyl of C8-C24 or alkenyl of C6-C24. The material provided by the invention has high transparency, high light transmittance up to 93-95%, and is environment-friendly. The preparation method involved in the invention has the characteristics of simple process, convenient operation control, stable quality and high production efficiency, and can be used for large scale industrialized production.

The present invention relates to an apparatus and method for heating a liquid medium, in particular a brewhouse, the apparatus having: a container, which may be filled and emptied; a heater, which is used to heat a liquid medium using a heating medium, in particular malt syrup; a temperature sensor for measuring the flow temperature of a heating medium; a temperature sensor for measuring the return temperature of a heating medium; a temperature sensor for measuring the temperature of a liquid medium; a closed-loop control unit, which is used to control the heating rate in a closed loop, wherein the closed-loop control unit is constructed and closed-loop control of the heating rate in the following manner: the logarithmic temperature difference between the temperature of the heating medium and the corresponding current temperature of the liquid medium remains approximately constant.

A convector for air cooling of a fluid flowing in a pipe, comprising: a path for a cooling air flow comprising an inlet from and an outlet towards the environment, a heat exchange section comprising at least one tube bundle defining a heat exchange surface, said section being provided in said path for the air flow, fan means producing said air flow along said path, so that said air flow externally invests said tube bundle on said; heat exchange surface, a humidifying section arranged in said path, upstream of said heat exchange section, where water is atomized to be invested by the air flow, characterized by comprising a wetting device for wetting directly with water a portion of the heat exchange surface of said tube bundle to further cool said portion of tube bundle.

A composite flux for improving coal ash melting properties, its preparation method and application. The composite flux is composed of CaO and red mud. The chemical composition and mass content of the composite flux are: 56.1%-90.6% for basic oxides and 9.4%-43.9% for acidic oxides. The composite flux provided by the present invention can not only effectively improve the melting characteristics of coal ash with high ash melting point, make it suitable for entrained bed gasification furnace with liquid slag discharge, but also realize resource utilization of polluted waste red mud, and has good economic and social benefits.

A transportation refrigeration unit includes an evaporator circulating a flow of refrigerant therethrough to cool a flow of supply air flowing over the evaporator, a compressor in fluid communication with the evaporator to compress the flow of refrigerant, and an engine operably connected to the compressor to drive operation of the compressor. The engine includes an exhaust pathway to direct an exhaust gas flow from the transportation refrigeration unit, and a nozzle extending circumferentially around the exhaust pathway defining a nozzle flowpath between the exhaust pathway and the nozzle, the nozzle configured to flow a cooling airflow along the nozzle flowpath to reduce a temperature of the exhaust gas flow.

The invention discloses a normal-temperature turtle net crack repairing material and a preparation method and application thereof, and belongs to the technical field of asphalt pavement maintenance and repairing materials. According to a treatment method in the prior art, the whole block of a disease part is generally cut and separated out of a pavement, the construction period is long, raw material preparation is complex, operation is tedious, the filling cost is high, or a repairing material needs to be heated at a high temperature on site, the requirement for the environment temperature is high, and permeability is poor. The material comprises 70-80% wt of an oil phase and 20-30% wt of water, and the oil phase comprises the following components in parts by weight: 70-80 parts of asphalt, 1-4 parts of span, 1-4 parts of a warm mix agent and 20-30 parts of diesel oil. The diesel oil is matched with the span and the warm mixing agent to improve the water melting capacity of the asphalt, and meanwhile, the asphalt can obtain good flowing capacity at normal temperature by utilizing the dilution effect of the diesel oil and water on the asphalt, so that the normal-temperature turtle net crack repairing material can be taken and used at normal temperature at any time, and the turtle net crack of an asphalt pavement is directly repaired.