Views: 0 Author: Site Editor Publish Time: 2025-12-09 Origin: Site
A dry cooler is an air-cooled heat exchanger that removes heat from a closed water or glycol loop by transferring thermal energy to the ambient air. Unlike cooling towers, dry coolers do not use water evaporation, making them a low-maintenance and environmentally friendly solution for building HVAC systems.
In a building heat pump loop, the dry cooler:
Rejects excess heat when loop temperature rises
Maintains optimal operating temperature for heat pumps
Stabilizes system operation across seasonal changes
Prevents overheating during peak load conditions
System Capacity: 500 kW Heat Rejection
A 500 kW (≈142 tons) dry cooler is suited for:
Medium to large commercial buildings
High-rise residential complexes
Hotels, hospitals, office buildings
Multi-heat-pump systems on a shared hydronic loop
Typical Operating Parameters
Heat Rejection Capacity: 500 kW
Fluid Type: Water or water–glycol mixture
Inlet Temperatures: 25–35 °C (typical loop return)
Outlet Temperatures: 20–30 °C depending on ambient and load
Ambient Operation Range: –15 °C to +45 °C (with customization)
The unit is engineered to maintain loop temperature even in high ambient conditions.
Benefits of Using a Dry Cooler in Heat Pump Loops
Water-Saving, Maintenance-Free Operation
Unlike cooling towers, dry coolers do not consume water or require chemical treatment.
Improved Heat Pump Efficiency
Maintains stable loop temperature for all heat pumps in the building.
Low Operating Cost
EC fans and optimized coil design ensure high seasonal efficiency.
Quiet and Reliable
Low-noise fan options and vibration-isolated frames make them suitable for urban rooftops.
Long Service Life
Corrosion-protected coils and weather-resistant materials ensure durability.
