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    Pitch-based carbon foam and composites and uses thereof
    3.
    发明授权
    Pitch-based carbon foam and composites and uses thereof 失效
    沥青基碳泡沫及其复合材料及其用途

    公开(公告)号：US06673328B1

    公开(公告)日：2004-01-06

    申请号：US09519559

    申请日：2000-03-06

    申请人： James W. Klett ,  Timothy D. Burchell ,  Ashok Choudhury

    发明人： James W. Klett ,  Timothy D. Burchell ,  Ashok Choudhury

    IPC分类号： C01B3100

    CPC分类号： F28F21/02 ,  C01B32/00 ,  C04B38/00 ,  C04B2111/00189 ,  C04B2111/94 ,  C04B2201/32 ,  F28D5/02 ,  F28D20/023 ,  F28F13/187 ,  Y02E60/145 ,  C04B35/522 ,  C04B38/0022 ,  C04B38/0051 ,  C04B38/0054 ,  C04B38/0058 ,  C04B2103/0071 ,  C04B35/52 ,  C04B40/0259 ,  C04B40/0263

    摘要： A thermally conductive carbon foam is provided, normally having a thermal conductivity of at least 40 W/m·K. The carbon foam usually has a specific thermal conductivity, defined as the thermal conductivity divided by the density, of at least about 75 W·cm3/m·°K·gm. The foam also has a high specific surface area, typically at least about 6,000 m2/m3. The foam is characterized by an x-ray diffraction pattern having “doublet” 100 and 101 peaks characterized by a relative peak split factor no greater than about 0.470. The foam is graphitic and exhibits substantially isotropic thermal conductivity. The foam comprises substantially ellipsoidal pores and the mean pore diameter of such pores is preferably no greater than about 340 microns. Other materials, such as phase change materials, can be impregnated in the pores in order to impart beneficial thermal properties to the foam. Heat exchange devices and evaporatively cooled heat sinks utilizing the foams are also disclosed.

    摘要翻译： 提供导热碳泡沫，通常具有至少40W / m·K的热导率。 碳泡沫通常具有至少约75W·cm 3 / m·cm·g·m的比热传导率（定义为热导率除以密度）。 泡沫也具有高比表面积，通常至少约6,000m 2 / m 3。 泡沫的特征在于具有“双峰”100和101的X射线衍射图，其特征在于相对峰分裂系数不大于约0.470。 泡沫是石墨，并表现出基本上各向同性的热导率。 泡沫包括基本上椭圆形的孔，并且这些孔的平均孔径优选不大于约340微米。 可以将诸如相变材料的其它材料浸渍在孔中，以赋予泡沫有利的热性能。 还公开了使用泡沫的热交换装置和蒸发冷却的散热器。

    Method for extruding pitch based foam
    4.
    发明授权
    Method for extruding pitch based foam 有权
    沥青基泡沫挤出方法

    公开(公告)号：US06344159B1

    公开(公告)日：2002-02-05

    申请号：US09400678

    申请日：1999-09-21

    申请人： James W. Klett

    发明人： James W. Klett

    IPC分类号： B29C4420

    CPC分类号： C04B38/0022 ,  C04B2111/00129 ,  C04B35/52

    摘要： A method and apparatus for extruding pitch based foam is disclosed. The method includes the steps of: forming a viscous pitch foam; passing the precursor through an extrusion tube; and subjecting the precursor in said extrusion tube to a temperature gradient which varies along the length of the extrusion tube to form an extruded carbon foam. The apparatus includes an extrusion tube having a passageway communicatively connected to a chamber in which a viscous pitch foam formed in the chamber paring through the extrusion tube, and a heating mechanism in thermal communication with the tube for heating the viscous pitch foam along the length of the tube in accordance with a predetermined temperature gradient.

    摘要翻译： 公开了一种用于挤出沥青基泡沫塑料的方法和装置。 该方法包括以下步骤：形成粘性沥青泡沫; 使前体通过挤出管; 并使所述挤出管中的前体经受沿挤出管的长度变化的温度梯度，以形成挤出的碳泡沫。 该设备包括挤出管，其具有通路连通到腔室中的通道，在该腔室中形成在腔室中的粘性沥青泡沫形成在挤出管道中，以及加热机构，其与管道热连通，用于加热粘性沥青泡沫体的长度 该管按照预定的温度梯度。

    Pitch-based carbon foam and composites
    5.
    发明授权
    Pitch-based carbon foam and composites 有权

    公开(公告)号：US06261485B1

    公开(公告)日：2001-07-17

    申请号：US09337027

    申请日：1999-06-25

    申请人： James W. Klett

    发明人： James W. Klett

    IPC分类号： C01B3102

    CPC分类号： F28D20/023 ,  C04B38/00 ,  Y02E60/145 ,  Y10T428/2982 ,  Y10T428/30 ,  C04B35/52

    摘要： A process for producing carbon foam or a composite is disclosed which obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively uniform distribution of pore sizes and a highly aligned graphic structure in the struts. The foam material can be made into a composite which is useful in high temperature sandwich panels for both thermal and structural applications.

    Shell-and-tube heat exchangers with foam heat transfer units
    7.
    发明授权
    Shell-and-tube heat exchangers with foam heat transfer units 有权
    带泡沫传热装置的管壳式热交换器

    公开(公告)号：US09464847B2

    公开(公告)日：2016-10-11

    申请号：US13365459

    申请日：2012-02-03

    申请人： Scott M. Maurer ,  Nicholas J. Nagurny ,  Michael R. Eller ,  James W. Klett

    发明人： Scott M. Maurer ,  Nicholas J. Nagurny ,  Michael R. Eller ,  James W. Klett

    IPC分类号： F28D7/16 ,  F28D7/02 ,  F28F9/22 ,  F28F13/00 ,  F28F21/02

    CPC分类号： F28D7/1607 ,  F28D7/024 ,  F28D7/1669 ,  F28F9/22 ,  F28F13/003 ,  F28F21/02 ,  F28F2009/226 ,  F28F2275/025 ,  F28F2275/062

    摘要： Shell-and-tube heat exchangers that utilize one or more foam heat transfer units engaged with the tubes to enhance the heat transfer between first and second fluids. The foam of the heat transfer units can be any thermally conductive foam material that enhances heat transfer, for example graphite foam. These shell-and-tube heat exchangers are highly efficient, inexpensive to build, and corrosion resistant. The described heat exchangers can be used in a variety of applications, including but not limited to, low thermal driving force applications, power generation applications, and non-power generation applications such as refrigeration and cryogenics. The foam heat transfer units can be made from any thermally conductive foam material including, but not limited to, graphite foam or metal foam. In an embodiment, the heat exchanger utilizes tubes that are twisted around a central foam heat transfer unit.

    摘要翻译： 壳管式热交换器利用与管接合的一个或多个泡沫传热单元来增强第一和第二流体之间的热传递。 传热单元的泡沫可以是增强热传递的任何导热泡沫材料，例如石墨泡沫。 这些管壳式热交换器是高效的，低成本的和耐腐蚀的。 所描述的热交换器可以用于各种应用，包括但不限于低热驱动力应用，发电应用以及非发电应用，例如制冷和低温。 泡沫传热单元可以由任何导热泡沫材料制成，包括但不限于石墨泡沫或金属泡沫。 在一个实施例中，热交换器使用围绕中心泡沫传热单元扭转的管。

    Heat exchanger with foam fins
    8.
    发明授权
    Heat exchanger with foam fins 有权
    带泡沫翅片的热交换器

    公开(公告)号：US09080818B2

    公开(公告)日：2015-07-14

    申请号：US13365456

    申请日：2012-02-03

    申请人： Scott M. Maurer ,  Nicholas J. Nagurny ,  Michael R. Eller ,  James W. Klett

    发明人： Scott M. Maurer ,  Nicholas J. Nagurny ,  Michael R. Eller ,  James W. Klett

    IPC分类号： F28F1/12 ,  F28F13/00 ,  F28F21/02

    CPC分类号： F28F1/122 ,  F28F13/003 ,  F28F21/02 ,  F28F2275/025

    摘要： Heat exchangers are described that employ fins made of a heat conducting foam material to enhance heat transfer. The foam fins can be used in any type of heat exchanger including, but not limited to, a plate-fin heat exchanger, a plate-frame heat exchanger or a shell-and-tube heat exchanger. The heat exchangers employing foam fins described herein are highly efficient, inexpensive to build, and corrosion resistant. The described heat exchangers can be used in a variety of applications, including but not limited to, low thermal driving force applications, power generation applications, and non-power generation applications such as refrigeration and cryogenics. The fins can be made from any thermally conductive foam material including, but not limited to, graphite foam or metal foam.

    摘要翻译： 描述了使用由导热泡沫材料制成的翅片来加强热传递的热交换器。 泡沫翅片可以用于任何类型的热交换器，包括但不限于板翅式热交换器，板式热交换器或管壳式热交换器。 使用本文所述的泡沫翅片的热交换器是高效的，低成本的和耐腐蚀的。 所描述的热交换器可以用于各种应用，包括但不限于低热驱动力应用，发电应用以及非发电应用，例如制冷和低温。 翅片可以由任何导热泡沫材料制成，包括但不限于石墨泡沫或金属泡沫。

    High efficiency, oxidation resistant radio frequency susceptor
    10.
    发明授权
    High efficiency, oxidation resistant radio frequency susceptor 失效
    高效，抗氧化的射频感受器

    公开(公告)号：US06809304B2

    公开(公告)日：2004-10-26

    申请号：US10822946

    申请日：2004-04-13

    申请人： Theodore M. Besmann ,  James W. Klett

    发明人： Theodore M. Besmann ,  James W. Klett

    IPC分类号： H05B610

    CPC分类号： H05B6/6491

    摘要： An article and method of producing an article for converting energy from one form to another having a pitch-derived graphitic foam carbon foam substrate and a single layer coating applied to all exposed surfaces wherein the coating is either silicon carbide or carbides formed from a Group IVA metal. The article is used as fully coated carbon foam susceptors that more effectively absorb radio frequency (RF) band energy and more effectively convert the RF energy into thermal band energy or sensible heat. The essentially non-permeable coatings also serve as corrosion or oxidation resistant barriers.

    摘要翻译： 一种制备用于将能量从一种形式转化为另一种形状的制品和方法，该制品具有沥青衍生的石墨泡沫碳泡沫基材和施加到所有暴露表面的单层涂层，其中所述涂层是由IVA族形成的碳化硅或碳化物 金属。 该物品用作完全涂覆的碳泡沫感受器，其更有效地吸收射频（RF）带能量并更有效地将RF能量转换成热带能量或显热。 基本上不可渗透的涂层还用作腐蚀或抗氧化屏障。