Heat pipe

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Heat pipe

Heat pipe is developed in recent decades with a high thermal conductivity of the heat transfer components, heat pipe first used in the aerospace field, today, has been from the aerospace in the temperature and temperature control applications extended to other areas of industrial technology applications , Oil, chemical, energy, power, metallurgy, electronics, machinery and medical and other industries have gradually applied the heat pipe technology.

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  •   Heat pipe technology

      Heat pipe is developed in recent decades with a high thermal conductivity of the heat transfer components, heat pipe first used in the aerospace field, today, has been from the aerospace in the temperature and temperature control applications extended to other areas of industrial technology applications , Oil, chemical, energy, power, metallurgy, electronics, machinery and medical and other industries have gradually applied the heat pipe technology.

      The heat pipe is usually composed of a tube, a channel with capillary action, and a heat transfer medium. The heat pipe itself forms a high vacuum sealing system. The heat pipe can be divided into three sections, namely, the evaporating section, the adiabatic section and the condensing section. Its structure as shown:

      The working principle of the heat pipe is: the heat of the external heat source, the temperature of the liquid working fluid is increased by the heat of the tube wall of the evaporation section and the liquid-absorbent core filled with the working fluid; the liquid temperature rises and evaporates on the liquid level until the saturated steam Pressure, at this time heat to latent heat to the steam. The saturated vapor pressure of the evaporation section increases as the liquid temperature rises. Under the action of differential pressure, the steam flows through the steam chamber to the lower condensing section of pressure and temperature, and condenses and discharges latent heat at the gas-liquid interface of the condensation section. The heat released from the gas-liquid interface through the refrigerant filled with the liquid core and the heat conduction to the heat pipe outside the cold source. The condensed liquid is returned to the evaporation section through the wick to complete a cycle. So back and forth, continue to heat from the evaporation section to the condensation section. Insulation section in addition to providing access to the working fluid, but also plays the role of the evaporation section and the condensing section separated, and the tube does not work with the outside heat transfer.

      In the heat pipe vacuum to meet the requirements of the case, heat pipe heat transfer capacity depends mainly on the design of heat pipe wick. According to the different applications of heat pipe, our company designs a variety of different heat pipe liquid absorbent core, including: axial channel suction core, wire mesh and sintered core. Based on heat pipe technology, the principle of phase change heat transfer, the rational design of heat pipe structure and professional and reliable quality assurance, through years of practice, our company's heat pipe and heat pipe components have become more and more broad market.

      Heat pipe products

      (1) Products

    Project

    Technical Parameters

    Heat pipe length(mm)

    200~1100

    Heat pipe outside diameter

    12.7/16 mm

    Main material

    TP2

    Capillary structure

    Channel core / sintered core / wire mesh

    Working medium

    Weiteli refrigerant

    Design the operating temperature(℃)

    -40~200

    Designed to use inclination(°)

    α> 5

    Maximum heat transfer power(Qmax)

    50~1000w (According to the actual product specifications model, according to customer demand)

    Heat pipe isothermal

    △T≤2℃

    Thermal resistance coefficient(℃/W)

    < 0.08 (Reference)

    Heat transfer power test

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