PURPOSES : The number of snowfall and the amount of snowfall are gradually increasing, and due to the characteristics of Seoul, which has a lot of traffic, it is difficult to respond quickly with a snow removal method that relies on snow removal vehicles. Therefore, it is necessary to develop an IoT based eco-friendly snow removal system that can respond to unexpected heavy snow in winter. In this study, the low temperature operation and snow removal performance of the IoT road condition snow removal detector and the snow removal system using CNT and PCM are evaluated in the climatic environment chamber. METHODS : To make artificial snow, it consists of an climatic environment chamber that can simulate a low temperature environment and equipment that can supply compressed air and cold water. Depending on the usage characteristics of the climatic environment chamber, use an air-water type snow maker. In order to make artificial snow, wet temperature, which takes into account the actual air temperature and the amount of moisture in the air, acts as the most important variable and is suitable for making snow, below –1.5 ℃. The lower the water temperature, the easier it is to freeze, so the water source was continuously supplied at 0 ℃ to 4 ℃. One of the two different pipes is connected to the water tank to supply water, and the other pipe is connected to the compressor to supply high-pressure air. Water is dispersed by compressed air in the form of many small droplets. The sprayed microscopic water particles freeze quickly in the low temperature environmental climatic chamber air and naturally fall to the floor, forming snow. Based on the KS C IEC 60068-2-1 cold resistance test standard, an integrated environmental test procedure was prepared to apply to IoT-based snow removal systems and performance evaluation was performed accordingly. The IoT based eco-friendly snow removal system is needed to in winter, so visual check and inspect the operation at the climatic chamber before setting up it to the actual site. In addition, grid type equipment was manufactured for consistent and reliable snow removal performance evaluation under controlled environmental conditions. RESULTS : The IoT-based eco-friendly snow removal system normally carried out the task of acquiring data and images without damaging the appearance or freezing in a low temperature environment. It showed clear snow removal performance in areas where PCM and CNT heating technology were applied to the concrete slab. This experiment shows that normal snow removal tasks can be carried out in low temperature environments in winter. CONCLUSIONS : The integrated environmental test procedures and grid type evaluation equipment are applied to low temperature operation and snow removal performance evaluation of snow removal systems. In the climatic environment chamber, where low temperature environments can be simulated, artificial snow is created regardless of the season to derive quantitative experimental results on snow removal performance. PCM and CNT heating technology showed high snow removal performance. The system is expected to be applied to road site situations to preemptively respond to unexpected heavy snow in winter.

1. 서론
    1.1. 폭설 및 대설
    1.2. 제설방법
    1.3. 제설능력 평가
2. 강설 환경 모사
    2.1. 기후환경시험실
    2.2. 강설방법
    2.3. 강설장비
    2.4. 제설기
3. IoT 기반 친환경 제설시스템
    3.1. IoT 제설감지기
    3.2. PCM 포장가열시스템
    3.3. CNT 발열도로시스템
4. 저온운용 성능평가
    4.1. 평가방법
    4.2. 평가결과
5. 제설성능 성능평가
    5.1. 평가장비
    5.2. 평가방법
    5.3. 평가결과
6. 결론
감사의 글

• 나문수(정회원 · (재)한국건설생활환경시험연구원 기후환경실증센터 연구원) | Na Mun-Soo
• 오민근((재)한국건설생활환경시험연구원 기후환경실증센터 주임연구원) | Oh Min-Geun
• 오한진(정회원 · 서울연구원 지속가능연구본부 안전인프라연구실 수석연구원) | Oh Han-Jin
• 배우빈((재)한국건설생활환경시험연구원 기후환경실증센터 선임연구원) | Bae Woo-Bin (engineer Center for Climatic Environment Real-scale Testing, 5, Jeongtong-ro, Deoksan-eup, Jincheon-gun, Chungcheongbuk-do, Republic of Korea) 교신저자