고속철도차량용 제빙액으로의 적용가능물질에 대한 융빙성능 평가

박경원; 이준구; 이홍기; Gyoung-Won Park; Jun-Ku Lee; Hong-Ki Lee

Applied Chemistry for Engineering, Vol.30, No.3, 384-388, June, 2019

DOI10.14478/ace.2019.1026 Export Citation

고속철도차량용 제빙액으로의 적용가능물질에 대한 융빙성능 평가

Ice Melting Capacity Evaluation of Applicable Materials of De-icing Fluid for High Speed Railway Rolling Stock

박경원, 이준구¹, 이홍기^†

극동중앙연구소
¹한국철도공사

Gyoung-Won Park, Jun-Ku Lee¹, and Hong-Ki Lee^†

Kukdong R&D Center, 135, Hasinbeonyeong-ro, Saha-gu, Busan 49432, Republic of Korea
¹Korea Railroad Corporation, 240, Jungang-ro, Dong-gu, Daejeon 34618, Republic of Korea

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초록

동절기 고속철도차량 하부 및 대차부에 부착된 설빙이 차량 운행 시 도상자갈구간(침목이 받는 차량 하중 전달 및 침목 고정을 위한 자갈 구간)에서 고속으로 낙하하여 자갈을 비산시켜 이로 인한 철도차량 구조물 및 시설물의 피해가 보고되고 있으며, 이는 고속철도 개통 이후 지속되고 있다. 이러한 문제점 해결을 위해 자갈의 비산을 방지하는 네트, 인력 제빙, 이동식 열풍기 등을 사용하고 있으나 효율성이 떨어진다. 기존보다 효율적인 제빙을 위해 화학적 제빙액에 대한 연구가 진행되고 있으며, 본 연구에서는 화학적 제빙액으로 사용되는 물질들의 융빙성능, 동점도, 증발성 등을 평가하여 고속철도차량 제빙용으로 최적의 물질을 찾고자 한다. 평가 물질로는 유기산염류 4종(개미산나트륨, 초산나트륨, 개미산칼륨, 초산칼륨)과 알코올류 2종(프로필렌글리콜, 글리세롤)을 대상으로 하였다. 이때, 실내 평가에서는 개미산칼륨, 초산칼륨, 프로필렌글리콜이 유사한 융빙성능을 보였으나, 모사 살포 시스템을 이용한 융빙성능 결과, 프로필렌글리콜이 가장 우수한 성능을 보였다. 이는 프로필렌글리콜의 동점도가 2.989029 St로 다른 물질 대비 높아 얼음에서 보다 오래 체류하여 제빙하기 때문이다. 또한, 개미산칼륨과 초산칼륨은 결정이 석출되어 차량 외관에 악영향을 미치므로 사용에 어려움이 있다. 본 연구를 통해 프로필렌글리콜이 고속철도차량용 제빙액으로 최적의 물질임을 확인하였다.

In winter season, the snow and ice accretion on the bottom of the high speed railway rolling stock and boogie part has fallen at a high speed from the ballast section (gravel section for the transmission of the rolling stock load received by sleepers and fixing sleepers), causing the gravel to be scattered, thereby damaging the railway rolling stock structures and facilities. In order to solve these problems, the gravel scattering prevention net, manual de-icing, and movable hot air machine were used, but their efficiency was low. For the more efficient de-icing than ever before, an optimum material for de-icing fluid for high speed railway rolling stock was developed by evaluating the ice melting capacity, kinematic viscosity, evaporation of the material used as a chemical de-icing fluid. Four kinds of organic acid salts (sodium formate, sodium acetate, potassium formate and potassium acetate) and two different alcohols (propylene glycol, glycerol) were used as evaluation materials. Potassium formate, potassium acetate, and propylene glycol had similar ice melting capacities in the indoor test, but the propylene glycol showed the best ice melting capacity in spraying the system simulation test. This is because the kinematic viscosity of propylene glycol was 2.989029 St, which is higher than those of other materials therefore, it could stay longer on the ice and de-icing. In addition, potassium formate and potassium acetate were difficult to be used since the crystals precipitated and adversely affected the appearance of the rolling stock. The propylene glycol is the most optimum as an de-icing fluid for the high speed railway rolling stock.

Keywords:High speed railway rolling stock;Ice melting capacity;De-icing fluid;Spraying system

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[5] Gwon HB, Nam SW, Kim DW, Lee IW, Han JS, J. Korean Soc. Railway, 77-82 (2004).

[6] Ji Y, Dan K, Lee C, Korean Patent 2003646470000 (2004).

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[8] Kloow L, Jenstav M, Stockholm Transrail Report, BVF5 Winter R1 (2006).

[9] Lee HK, Korean Patent 1020090046040 (2009).

[10] Sang HS, Annual Conference of The Korean Society of Industrial Application, 31-37 (2006).

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[12] Kim Y, You K, Jo C, Cho NH, Int. J. Highway Eng., 18, 25 (2016)

[13] Jang PS, Choi YS, Park C, Annual Conference of The Korean Society of Disaster Information, 127-128 (2017).