The Thermo Scientific NESLAB Coolflow System II is a closed-loop liquid recirculator engineered for precise temperature control in laboratory and industrial cooling applications. This water-to-water heat exchanger rejects process heat into facility water supplies, delivering efficient thermal management with lower energy consumption than compressor-based alternatives. The sealed system design prevents contamination while maintaining stable performance across diverse analytical equipment, laser systems, and heat-generating devices.
Technical Specifications
Cooling Performance
• Cooling capacity: up to 34 kW (116,008 BTU/hr) with dual PD2 pump configuration
• Temperature range: +5°C to +35°C
• Temperature stability: ±1°C
• Heat load removal basis: 10°C delta between facility water supply and application setpoint
Pump Configurations
• Single PD2 pump (60 Hz): 3.0 GPM @ 60 PSI (11.4 LPM @ 4.1 bar)
• Dual 2 PD2 pumps (60 Hz): 6.0 GPM @ 60 PSI
Electrical
• 60 Hz option: 115V/60Hz/1 phase
• 50 Hz option: 220V/50Hz/1 phase
Physical
• Dimensions: 30.1 × 16.3–16.5 × 20.1 inches (76.5 × 41.3 × 51.1 cm)
• Weight: 188 lbs (84.4 kg)
• Reservoir volume: 1.8 gallons (6.6 liters)
Plumbing Connections
• Cooling water inlet/outlet: ½ inch FPT
• Process water connections: ¾ inch MPT
• Maximum facility water static pressure: 150 psig
• Maximum supply-to-return differential pressure: 65 psid
– Key Features
• Closed-loop architecture eliminates external contamination risks
• User-friendly interface displays temperature, pressure, and alarm status
• Audible alarms for critical operational conditions
• Low temperature cut-off protection
• Built-in liquid line filter ensures system cleanliness and heat transfer efficiency
• Integrated self-diagnostic capabilities for maintenance planning
– Typical Applications
• Laboratory cooling systems
• Laser thermal management
• Analytical equipment cooling
– Compatibility & Integration
The System II accommodates single or dual pump configurations to match application flow requirements. Facility water connections must maintain static pressures below 150 psig with supply-to-return differentials not exceeding 65 psid across rated flow ranges.
