Experimental Performance Evaluation of a Multi-stream Heat Exchanger for Integration of High-Temperature Steam Electrolysis with Nuclear Reactor Systems

IF 2.9 4区 工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY Korean Journal of Chemical Engineering Pub Date : 2024-09-03 DOI:10.1007/s11814-024-00270-7
Sin-Yeob Kim, Byung Ha Park, Sung-Deok Hong, Chan Soo Kim
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Abstract

Printed-circuit type multi-stream heat exchanger was designed and fabricated to produce high-temperature steam and air simultaneously from high-temperature helium heated using the helium loop, which is simulating VHTR (Very-High Temperature gas-cooled Reactor). This study describes the design methodology and the heat transfer performance evaluation results of the multi-stream heat exchanger for stable supply of high temperature steam and air to a 30 kWe SOEC (solid-oxide electrolyzer cell) system to produce hydrogen with high-temperature nuclear reactor systems. In order to control the steam supply above 700 ℃, the steam supply control methodology was established with a pressure control valve between the multi-stream heat exchanger and a steam generator. In this study, 20 kg/hr of steam over 800 ℃ and 110 SLPM of air over 750 ℃ were supplied stably with the multi-stream heat exchanger using helium loop. The heat transfer performance evaluation for steam is 1.1% below the design condition, which meets the design value within the error range. However, for air, the heat transfer was found to be 50.6% less than the design value due to a decrease in flow rate and reduced heat transfer performance caused by the formation of a deposition layer along the flow path. This high-temperature steam and air supply system will be connected with a high-temperature steam electrolysis system to perform the integral hydrogen production test using helium loop.

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用于高温蒸汽电解与核反应堆系统集成的多流热交换器的实验性能评估
设计并制造了印制电路式多流换热器,利用氦气回路加热高温氦气,同时产生高温蒸汽和空气,模拟 VHTR(超高温气冷堆)。本研究介绍了向 30 kWe SOEC(固态氧化物电解槽)系统稳定供应高温蒸汽和空气的多流热交换器的设计方法和传热性能评估结果,以便利用高温核反应堆系统生产氢气。为了控制 700 ℃ 以上的蒸汽供应,在多流热交换器和蒸汽发生器之间安装了压力控制阀,建立了蒸汽供应控制方法。在这项研究中,多流换热器利用氦气环路稳定地供应了 20 公斤/小时、超过 800 ℃ 的蒸汽和 110 SLPM、超过 750 ℃ 的空气。蒸汽的传热性能评估比设计条件低 1.1%,在误差范围内符合设计值。然而,对于空气而言,由于沿流动路径形成的沉积层导致流速下降和传热性能降低,传热量比设计值低 50.6%。该高温蒸汽和空气供应系统将与高温蒸汽电解系统连接,利用氦回路进行整体制氢试验。
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来源期刊
Korean Journal of Chemical Engineering
Korean Journal of Chemical Engineering 工程技术-工程:化工
CiteScore
4.60
自引率
11.10%
发文量
310
审稿时长
4.7 months
期刊介绍: The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.
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