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Overview
Eco-Friendly Washing System to Reduce VOC Exposure and Cleaning Time
Condensation on tunnel pavement and lining cannot be fully eliminated, causing persistent public anxiety.
Conventional dehumidifier-based countermeasures require large electricity consumption.
The 2024 Road Tunnel Condensation Countermeasure Guideline allows installation of “condensation-inducing facilities” in tunnels.
A low-power device with a surface cooler than pavement and lining induces condensation away from visible tunnel surfaces.
Circulating inflow water at 15–18℃ keeps the device cold and drains induced condensate to tunnel drains.
Core Competencies
Purpose
Automated eco-friendly washing system for bearings and components in railway overhaul maintenance.
Multi-Stage Washing and Drying
Multi-Stage Washing and Drying
High-pressure spray removes grease, ultrasonic washing performs precision cleaning, pure-water spray rinses, and hot-air drying finishes the process.
Closed-Type Automated System
Closed-Type Automated System
The enclosed automated washer reflects user needs for odorless detergent, process automation, and minimal manual work.
Detergent Circulation and Treatment
Detergent Circulation and Treatment
Detergent is recirculated through an oil skimmer, biofilter, and nano-bubble water treatment unit before reuse.
Eco-Friendly Detergent Use
Eco-Friendly Detergent Use
The detergent generates almost no volatile organic compounds and does not produce strong odors at the work site.
Application Field
Application Field
Applicable to washing bearings and related parts in railway rolling stock maintenance workshops.
Expected Benefits
Eco-friendly detergent use minimizes generation of organic chemical substances and improves the work environment.
Workplace conditions improve by eliminating strong solvent odors from volatile organic compounds.
Total washing time for 64 bearings is shortened from about 10 days to within 2 days.
Applying the eco-friendly washing system enhances washing efficiency in railway component maintenance.
Manual pre-soaking and hand-cleaning with organic solvents are greatly reduced.
Treated detergent solution is reused, so wastewater discharge from the washing process is almost eliminated.
TRL 8
Development and performance certified; ready for commercialization.
Contact
Korea Railroad Research Institute (KRRI)
Global Business Department
Dr. Jaeyoung Lee
E-mail: iyoung@krri.re.kr
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