59results about How to "Short heat transfer distance" patented technology

A loop type heat dissipating apparatus with a sprayer for transferring heat between a heat source and a heat sink includes an evaporator, a condenser, and a working fluid. The evaporator contacts the heat source and includes a first chamber, a second chamber, and a sprayer disposed between therebetween. The condenser contacts the heat sink and includes a third chamber communicating with the second chamber and a wick structure disposed on one side of the third chamber. The working fluid fills the loop type heat dissipating apparatus and is turned into microdroplets via a sprayer. The sprayer impinges the microdroplets into the second chamber where the microdroplets are then evaporated by the heat source before proceeding to the third chamber for condensation, liquefaction and adhering to the wick structure. Eventually, the working fluid flows back to the first chamber under a pumping force actuated by the sprayer and completes the cycle.

Systems and methods for heat exchange in accordance with the invention define adequately long-interchange distances for two fluids by wrapping a tube containing a first fluid about the wall of an inner cylindrical tank, within a gap formed with a second concentric tank. A second fluid is transmitted in the space defined between the turns of the tube and the two walls, providing effective short length thermal interchange through the tube walls. The tube is in the line contact with both tank walls and the fluids can flow rapidly over an adequately long length, so that high efficiency is provided in a low cost system.

The invention relates to a nitride phosphor / glass composite optical conversion kit for laser illumination and a preparation thereof, which relates to light conversion components. Nitride phosphor / glass composite optical conversion kit for laser illumination comprises a nitride phosphor / glass composite coating and a high thermal conductivity ceramic substrate, the nitride phosphor / glass composite coating is closely grown on the high thermal conductivity ceramic substrate. The preparation of phosphor slurry: the nitride phosphor / glass composite optical conversion kit is prepared for laser illumination. The nitride phosphor / glass composite optical conversion kit can be used in laser illumination. The luminous efficiency above 280 lm / W can be obtained by coupling the provided nitride phosphor / glass composite optical conversion kit for laser illumination with a laser source with emission wavelength about 450 nanometers.

The invention discloses a method and a device for air-floatation flow-state high-temperature heat-transfer gasification of biomass. The method comprises the following steps: (1) stirring a biomass gasifying raw material so as to form a mist state; (2) cracking under the heating of high temperature smoke at 800-1000 DEG C so as to obtain high temperature tar gas; (3) carrying out high temperature cracking and gasification on the high temperature tar gas and steam at the temperature of 1050-1150 DEG C; and (4) filtering, condensing and purifying solid residue and gas while stirring so as to obtain gas with a middle heat value. The device comprises a gas making furnace and at least one coke cracking furnace, wherein the gas making furnace comprises a gas collecting chamber and a stirring chamber; and the coke cracking furnace comprises an upper coke cracking furnace gas collecting chamber provided with a coke cracking furnace row tube, and a coke cracking furnace row tube shell layer is communicated with a gas making furnace row tube shell layer. According to the invention, a heat source in the whole cracking and gasification process is derived from high temperature smoke generated by combustion of a biomass micrometer fuel which is a renewable clean energy and is wide in source and low in cost. The method and device provided by the invention have the characteristics of high heatefficiency, high gas making efficiency and high gas heat value.

The invention provides a composite phase change material with foamy copper as a base body and a preparing method thereof and a heat storage bag, and relates to the field of phase change materials. Thecomposite phase change material with the foamy copper as the base body comprises a foamy copper metal layer and a graphene layer which are alternatively arranged in a stratified structure, and the foamy copper metal layer comprises the phase change material. Through the composite phase change material, the technical problems that in the prior art, after foam metal and the phase change material are compounded, the heat conduction efficiency is low, and liquid is easily leaked can be solved, and the aims of improving the heat conduction efficiency and reducing leakage are achieved.