John Gallaher, Güntner US

2. Adiabatic Gas Coolers for Refrigerated
Warehouse CO2 Transcritical Applications
John Gallaher

3. Why Adiabatic Cooling System for Refrigerated
Warehouse CO2 Transcritical Applications?
• Increase thermal performance
of fin and tube heat exchanger
• Improved energy performance
of compressors in warmer
climates
• Control capabilities to enhance
operation of adiabatic gas
coolers

4. Why Adiabatic Cooling System for Refrigerated
Warehouse CO2 Transcritical Applications?
• Range of capacities
• GFW – up to eight fans in a
single row configuration
• Up to 250 Ton THR based on
ambient conditions
• 68” H x 47” W

5. Why Adiabatic Cooling System for Refrigerated
Warehouse CO2 Transcritical Applications?
• Range of capacities
• GFD – up to 18 fans in a two
row configuration
• Up to 700 Ton THR based on
ambient conditions
• 112” H x 94” W

6. Why Adiabatic Cooling System for Refrigerated
Warehouse CO2 Transcritical Applications?
• Control capabilities
• GMM – motor management
• GHM – Hydro management
• Using water flow, fan speed, and
ambient air conditions provides
proper cooling of the CO2 fluid
outlet temperature

7. Applications –
• Grandview WA
• 100,000 sq ft facility with freezer
and dock
• 190 TR CO2 Transcritical System
• Requires one GFW eight fan unit
with HydroBlu Adiabatic Cooling
System

8. Applications –
• Scranton PA
• 30,000 sq ft freezer
• 100 TR CO2 Transcritical System
• Requires one GFW four fan unit with
HydroBlu Adiabatic Cooling System

9. Applications –
• Food Production facility in Trois-
Riviere, QC
• 276 TR CO2 Transcritical System
• Requires two GFW six fan units with
HydroBlu Adiabatic Cooling System