Calculation of Fluid Flow Distribution Inside a Compact Ceramic High Temperature Heat Exchanger and Chemical Decomposer
Calculation of Fluid Flow Distribution Inside a Compact Ceramic High Temperature Heat Exchanger and Chemical Decomposer
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DOI：
10.1115/1.2911680
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发表时间：
2008-06
影响因子：
2
通讯作者：
V. Ponyavin;Yitung Chen;J. Cutts;M. Wilson;A. Hechanova
中科院分区：
文献类型：
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作者：
V. Ponyavin;Yitung Chen;J. Cutts;M. Wilson;A. Hechanova
对紧凑型陶瓷高温热交换器和化学分解器（此后称为热交换器）内部的流量分布进行数值分析，该热交换器将用于氢气生产，其中进行硫碘热化学循环。为了验证数值模型的正确性，对换热器进行了实验研究。对基本设计换热器的流量分配研究表明，该设计存在较大的流量分配不均匀性，在进出口管汇结构不佳时可能出现回流现象。为了提高换热器内部通道流量分配的均匀性，提出了几种换热器歧管和供应通道的改进设计。所提出的设计在内部通道之间具有足够均匀的流速分布，具有适当的压降。
Numerical analysis of flow distribution inside a compact ceramic high temperature heat exchanger and chemical decomposer (thereafter, heat exchanger), which will be used for hydrogen production, wherein the sulfur iodine thermochemical cycle is performed. To validate the numerical model, experimental investigation of the heat exchanger is accomplished. The study of the flow distribution in the base line design heat exchanger shows that the design has large-flow maldistribution and the reverse flow may occur at poor inlet and outlet manifold configurations. To enhance uniformity of the flow rate distribution among the heat exchanger internal channels, several improved designs of the heat exchanger manifolds and supply channels are proposed. The proposed designs have a sufficiently uniform flow rate distribution among the internal channels, with an appropriate pressure drop.