Snow-melting performance of building waste heat: An experimental evaluation

¹ University of Fukui, Faculty of Basic and Generic Researches, Headquarters for Carbon Neutral Initiatives, 910-8507 Fukui, Japan
² University of Fukui, Faculty of Engineering, Architecture and Civil Engineering, 910-8507 Fukui, Japan
³ Chubu Electric Power, Advanced Applied Research & Innovation Center, 459-8522 Nagoya, Japan
⁴ Central Nippon Expressway Company, R&D Division, 460-0003 Nagoya, Japan
⁵ Central Nippon Highway Engineering, Takayama Branch, 506-0205 Takayama, Japan

^* Corresponding author: terasaki@u-fukui.ac.jp

Abstract

This study experimentally investigated the performance of a snow-melting system using waste heat from a building at the Matsunokitouge parking area in Takayama City, Gifu Prefecture. Accordingly, snowmelt on the interlocking blocks (ILBs) proceeded rapidly under ventilation conditions with an average main pipe air temperature of 17 °C and an airflow rate of 51.5 m³/m²h when the outside air temperature was approximately -2°C or higher, and the hourly snow intensity was 2.0 cm/h or less. Furthermore, a temperature difference of approximately 4°C was observed between the air exiting the joints and the ILB surface. Hence, snow accumulation on the joints was minimal when the hourly snowfall rate was below 4.0 cm/h. In addition, the ILB surface in the snowmelt area remained ice-free even under icy conditions, such as an air temperature of -15°C, effectively preventing falls caused by road surface freezing.