The wastewater treatment water is 7500L/min, the heat pump heating capacity is 1118kW! The snow melting area is 29000m2.
We would like to introduce a case of the "sewage heat utilization snow melting system" constructed at the Shinminato Ohashi Bridge in Imizu City, Toyama Prefecture. On the East-West Line of the Fukuki Toyama Port (Shinminato area) coastal road, we installed a non-water-spraying snow melting facility using a water-source heat pump, utilizing the sewage treated water (winter water temperature 16°C) from the nearby Jinzukawa Left Bank Purification Center as the heat source for the steel girder section (Shinminato Ohashi, length 370m). Furthermore, we are sprinkling temperature-adjusted water, which is a mixture of the wastewater from the heat pump and sewage treated water, through snow melting pipes on the PC bridge section and earthworks section (1460m extension on the west side, 1760m extension on the east side). 【Equipment Overview】 ■ Completion: March 2012 ■ Construction Location: Uryu Town to Kaiō Town, Imizu City, Toyama Prefecture ■ Client: Hokuriku Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism, Fukuki Toyama Port Office ■ Contractor: Kowa Co., Ltd. *For more details, please refer to the PDF document or feel free to contact us.
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【Other Equipment Overview】 ■ Snow melting area: 29,000 m² (Steel girder section L = 370 m (no sprinkling), West side L = 1,460 m, East side L = 1,760 m) ■ Design weather conditions: Hourly snowfall depth 2.13 cm/h, temperature -0.2℃, wind speed 2.6 m/s ■ Design water source temperature: 13℃ ■ Snow melting design: 277.2 W/m² (Circulation temperature supply 17.0℃ → return water 11.4℃ (implemented)) ■ Sprinkling design: Sprinkling temperature 10.0℃, basic sprinkling amount 0.21 L/m²·min) *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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A comfortable and convenient life, along with the blessings of nature. We need both of these. While making our communities safer and more comfortable, we must protect the natural environment. It's a challenging theme, but if we face it seriously, we can surely achieve it. What makes this possible is creativity and technology. Kowa will leverage the technical know-how we have accumulated and continue to strive for a balance between the two.