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首页> 外文会议>2002 ASME International Mechanical Engineering Congress and Exposition , Nov 17-22, 2002, New Orleans, Louisiana >HEAT TRANSFER OF SOLID PARTICULATE AND GASEOUS HEAT CARRIER IN AN AIRLIFT APPARATUS
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HEAT TRANSFER OF SOLID PARTICULATE AND GASEOUS HEAT CARRIER IN AN AIRLIFT APPARATUS

机译：飞机装置中固体颗粒和气态载热体的传热

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摘要

This paper considers the heat transfer process between solid particulates with heat source and gaseous heat transfer carrier in airlift apparatus during the pneumatic transportation. This case has many important practical applications in heat transfer systems where heat is generated within or absorbed by the particulate. Examples of such processes include drying processes, chemically reacting systems, and combustion processes. The two most important parameters in the thermal treatment of solid particulates in this case are the temperatures of solids and the gaseous heat carriers. Traditionally, these temperatures are considered as functions of x-ordinate along the heat transfer duct of the apparatus. Such an approach leads to the subsequent difficulties because it is necessary to solve simultaneously the differential equations of particulates and gaseous heat transfer carrier motion and the equations of heat transfer. from this traditional approach and presents a set of differential equations in which the parameter is a heat transfer surface of the particulates. This approach reduces the number of differential equations describing the process and significantly simplifies the analytical formulation of the problem and hence the solution itself. The provided solutions allow for determining the temperatures of both the solids and the gaseous heat carriers as a function of particulate heat transfer surface. Two specific cases addressed here are heat transfer and heat and mass transfer when heat is generated within or absorbed by the particulates.
机译：本文研究了气举装置中气动运输过程中带热源的固体颗粒与气态传热载体之间的传热过程。这种情况在传热系统中有许多重要的实际应用，在传热系统中，微粒内部产生热量或由微粒吸收热量。这种过程的例子包括干燥过程，化学反应系统和燃烧过程。在这种情况下，固体颗粒热处理中的两个最重要的参数是固体的温度和气态热载体。传统上，这些温度被认为是沿设备传热管道的x坐标的函数。这种方法导致随后的困难，因为必须同时求解微粒和气态传热载体运动的微分方程以及传热方程。由这种传统方法得出，并提出了一组微分方程，其中参数是颗粒的传热表面。这种方法减少了描述过程的微分方程的数量，并大大简化了问题的解析公式，从而简化了解决方案本身。所提供的解决方案允许根据颗粒传热表面确定固体和气态热载体的温度。这里讨论的两个具体情况是传热以及当微粒内部产生热量或被微粒吸收热量时的传质传热。

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