Fouling behavior of a printed circuit steam generator under simulated operating conditions of a small modular reactor

Jeoh Han; Seok Kim; Sang Ji Kim; Young Kook Lee; Do Haeng Hur

doi:10.1016/j.anucene.2022.109127

Fouling behavior of a printed circuit steam generator under simulated operating conditions of a small modular reactor

Jeoh Han, Seok Kim, Sang Ji Kim, Young Kook Lee, Do Haeng Hur

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

A printed circuit steam generator (PCSG) has a high heat transfer area per unit volume due to small and narrow flow mini-channels, but the mini-channels are expected to be prone to fouling by corrosion products in water. In this work, the fouling behavior was investigated using the flow mini-channels of a PCSG in which feedwater was transformed to superheated steam. The deposits on the channels were found to be composed of numerous magnetite particles with a polyhedral shape, sizes up to ∼2 μm, and 17 % porosity. The amount of deposits was largest in the first main flow channel zone where saturation boiling began, and declined gradually toward the steam outlet. The fouling layer was perfectly removed using an ethylendiaminetetraacetic acid (EDTA)-based chemical cleaning process.

Original language	English
Article number	109127
Journal	Annals of Nuclear Energy
Volume	173
DOIs	https://doi.org/10.1016/j.anucene.2022.109127
Publication status	Published - 2022 Aug

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation (NRF) grant of the Republic of Korea funded by the Korean government (grant numbers: NRF-2018M2A8A4081307, NRF-2017M2A8A4015159).

Publisher Copyright:
© 2022 Elsevier Ltd

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering

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10.1016/j.anucene.2022.109127

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title = "Fouling behavior of a printed circuit steam generator under simulated operating conditions of a small modular reactor",

abstract = "A printed circuit steam generator (PCSG) has a high heat transfer area per unit volume due to small and narrow flow mini-channels, but the mini-channels are expected to be prone to fouling by corrosion products in water. In this work, the fouling behavior was investigated using the flow mini-channels of a PCSG in which feedwater was transformed to superheated steam. The deposits on the channels were found to be composed of numerous magnetite particles with a polyhedral shape, sizes up to ∼2 μm, and 17 % porosity. The amount of deposits was largest in the first main flow channel zone where saturation boiling began, and declined gradually toward the steam outlet. The fouling layer was perfectly removed using an ethylendiaminetetraacetic acid (EDTA)-based chemical cleaning process.",

author = "Jeoh Han and Seok Kim and Kim, {Sang Ji} and Lee, {Young Kook} and Hur, {Do Haeng}",

note = "Funding Information: This work was supported by the National Research Foundation (NRF) grant of the Republic of Korea funded by the Korean government (grant numbers: NRF-2018M2A8A4081307, NRF-2017M2A8A4015159). Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

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doi = "10.1016/j.anucene.2022.109127",

language = "English",

volume = "173",

journal = "Annals of Nuclear Energy",

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AU - Han, Jeoh

AU - Kim, Seok

AU - Kim, Sang Ji

AU - Lee, Young Kook

AU - Hur, Do Haeng

N1 - Funding Information: This work was supported by the National Research Foundation (NRF) grant of the Republic of Korea funded by the Korean government (grant numbers: NRF-2018M2A8A4081307, NRF-2017M2A8A4015159). Publisher Copyright: © 2022 Elsevier Ltd

PY - 2022/8

Y1 - 2022/8

N2 - A printed circuit steam generator (PCSG) has a high heat transfer area per unit volume due to small and narrow flow mini-channels, but the mini-channels are expected to be prone to fouling by corrosion products in water. In this work, the fouling behavior was investigated using the flow mini-channels of a PCSG in which feedwater was transformed to superheated steam. The deposits on the channels were found to be composed of numerous magnetite particles with a polyhedral shape, sizes up to ∼2 μm, and 17 % porosity. The amount of deposits was largest in the first main flow channel zone where saturation boiling began, and declined gradually toward the steam outlet. The fouling layer was perfectly removed using an ethylendiaminetetraacetic acid (EDTA)-based chemical cleaning process.

AB - A printed circuit steam generator (PCSG) has a high heat transfer area per unit volume due to small and narrow flow mini-channels, but the mini-channels are expected to be prone to fouling by corrosion products in water. In this work, the fouling behavior was investigated using the flow mini-channels of a PCSG in which feedwater was transformed to superheated steam. The deposits on the channels were found to be composed of numerous magnetite particles with a polyhedral shape, sizes up to ∼2 μm, and 17 % porosity. The amount of deposits was largest in the first main flow channel zone where saturation boiling began, and declined gradually toward the steam outlet. The fouling layer was perfectly removed using an ethylendiaminetetraacetic acid (EDTA)-based chemical cleaning process.

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JO - Annals of Nuclear Energy

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Fouling behavior of a printed circuit steam generator under simulated operating conditions of a small modular reactor

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