Case Study: Positive Pressure Clean Work Enclosure for Superconductor Assembly

Project Overview

An alternative energy company required a clean, controlled assembly environment to support the fabrication of steel-jacketed superconductor cables. The project required a 16’H x 36’W x 50’L enclosure (28,800 cubic feet) designed to operate at 10 air changes per hour (ACH), installed directly over a large existing piece of equipment with minimal available floor space. The company selected Duroair to engineer a custom DuroRoom™ retractable enclosure that would meet strict clean room environmental requirements while working within tight spatial constraints.

The Challenge

• Design a 16’H x 36’W x 50’L positive pressure-clean clean room enclosure (28,800 cubic feet) achieving 10 Air Changes per Hour (ACH).
• Install directly over a large existing piece of equipment without structural relocation or major facility modifications.
• Operate within minimal available floor space, limiting placement options for structural and filtration components.
• House four DuroClean™ Mini filtration units, which do not include temperature or humidity control, requiring careful airflow planning to maintain consistent positive pressure.
• Maintain HEPA-level filtration and clean work area standards while preserving efficient material handling access.

Solution

Duroair engineered a custom DuroRoom™ retractable enclosure specifically designed to integrate into the company’s constrained environment, achieving the required air change performance while working around existing equipment and tight spatial limitations.

System Specifications

• Enclosure: 16’H x 36’W x 50’L DuroRoom™ Retractable (28,800 cubic feet)
• Filtration Units: 4 × DuroClean™ Mini units; strategically mounted to optimize airflow distribution
• Filtration Level: HEPA-level filtration for clean assembly environment
• Airflow Performance: 10 Air Changes per Hour (ACH) across full interior volume
• Pressure: Positive pressure clean zone to prevent contamination ingress
• Application: Superconductor cable fabrication — steel-jacketed superconductor assembly
• Design: Installed directly over existing large-scale equipment; no structural relocation required; configured for tight floor space

The Result

• Targeted 10 ACH clean air performance achieved across full 28,800 cubic foot interior volume.
• Positive pressure clean zone maintained throughout operation, preventing contamination ingress.
• Material handling efficiency preserved and enclosure design accommodated operational access requirements.
• Zero equipment disruption installed directly over existing large-scale equipment without relocation.
• Repeat customer confidence, a second enclosure order placed, with a third installation already in planning.

Why This Project Matters

This installation demonstrates Duroair’s ability to:

• Engineer clean room environments within constrained industrial spaces, including installation over existing large-scale equipment.
• Deliver positive pressure HEPA-level solutions without full HVAC integration.
• Design modular retractable enclosures that preserve material handling access and production workflow.
• Scale alongside advanced manufacturing environments, including cutting-edge fusion energy technology.