Project Background
Quang Điện Dubhe operates a precision optoelectronics manufacturing facility in Hưng Yên Province, one of Vietnam's key industrial zones north of Hanoi. Optoelectronics manufacturing involves precision optical components and semiconductor processes that are extremely sensitive to thermal variations in the production environment and cooling water temperature.
Cooling Challenges
- Ultra-tight temperature control: Precision optoelectronics processes require outlet water temperature stability within ±0.5°C. Any deviation can cause optical alignment drift and yield loss.
- Large total capacity with modular flexibility: The 4200RT requirement needed to be met while maintaining the ability to adjust capacity as production lines scale up or down.
- Hưng Yên industrial zone conditions: The zone experiences significant seasonal temperature variations, requiring the cooling system to perform consistently across a wide range of ambient conditions.
COOLTEK Solution
COOLTEK deployed 6 units of LH-700RT in a modular parallel configuration:
- Modular 6-unit parallel array: Six independent units allow precise capacity adjustment — units can be added or removed from service as production requirements change.
- Counterflow thermal efficiency: The LH counterflow design achieves the lowest possible outlet temperature for given ambient wet-bulb conditions, critical for the ±0.5°C stability requirement.
- Precision water distribution: Each unit features calibrated water distribution nozzles ensuring even coverage and consistent heat exchange across the fill media.
Project Results
- Outlet temperature stability ±0.5°C achieved consistently across all seasonal conditions in Hưng Yên
- 4200RT total capacity with modular scalability for future expansion
- Zero thermal-related yield loss reported in first year of operation
- Flexible capacity management — individual units can be serviced without production interruption
Frequently Asked Questions
Why is ±0.5°C outlet temperature stability critical for optoelectronics?
Precision optical components and semiconductor processes involve materials with tight thermal expansion tolerances. Even small temperature variations in cooling water can cause dimensional changes in optical mounts and alignment fixtures, leading to yield loss and rework costs.
How does the 6-unit modular configuration help with capacity management?
With 6 independent units, operators can run 3–6 units depending on production load and ambient conditions. This avoids the inefficiency of running a single large tower at partial load, and allows individual unit maintenance without system shutdown.
Have precision cooling requirements for optoelectronics or semiconductor manufacturing?
Contact Engineer Wang