HVAC SYSTEM RESTORATION

Scope of Work: Cooling Coil Replacement, Butterfly Valve Installation, and Pipe Freezing

1. Problem Statement

The existing HVAC infrastructure showed significant signs of thermal inefficiency and mechanical failure.

• Cooling Coil: Heavy fouling and fin degradation reduced heat transfer capabilities.

• Butterfly Valve: The isolation valve was seized, preventing system regulation.

• Piping: System constraints required a valve replacement without a full building drain-down.

2. Technical Execution

To ensure zero operational downtime, the following procedures were implemented:

• Cryogenic Pipe Freezing: Utilized liquid nitrogen to create a localized ice plug, isolating the work area while maintaining system pressure elsewhere.

• Butterfly Valve Replacement: Removed the seized component and installed a high-performance lug-style valve for precise flow control.

• Cooling Coil Installation: Swapped the degraded unit with a high-efficiency coil to restore optimal airflow and thermal exchange.

3. Project Outcome

• Operational Efficiency: 15% increase in thermal performance.

• Maintenance: Restored full isolation capabilities for future service.

• Downtime: 0% building-wide interruption achieved through pipe-freezing technology.