Direct free cooling
Dry coolers can carry suitable loads when ambient conditions allow.
Free-cooling hire
USE THE AIR.
CUT THE LOAD.
Dry coolers and hybrid temporary systems that use suitable outdoor conditions to reduce mechanical refrigeration demand.
AmbientCooling opportunity
HybridSystem options
LowerCompressor runtime
The requirement comes first
LET THE WEATHER HELP.
When outdoor air is cool enough, a dry cooler can reject some or all of the process heat without relying entirely on compressors. We check the temperatures and load profile to see where free cooling is practical.
Engineered temporary cooling
BUILT AS
ONE SYSTEM.
Hybrid operation
Controls can stage free cooling with mechanical chilling as temperatures change.
Reduced runtime
Using ambient air can lower compressor hours and electrical demand.
System integration
Pumps, valves, controls and glycol are designed around the full circuit.
From requirement to running
ONE TEAM.
FOUR STEPS.
- 01
Review
Compare process temperatures with expected ambient conditions.
- 02
Model
Estimate when and how much free cooling is available.
- 03
Integrate
Design dry coolers, chillers and controls as one system.
- 04
Optimise
Adjust staging through the hire as conditions change.
Where it works
READY FOR
THE REAL WORLD.
Before we specify equipment
WHAT WE
CHECK FIRST.
The right answer comes from the operating detail. These are the points our engineers will work through with your team.
Temperature approach
Free cooling needs enough difference between outdoor air and required fluid temperature.
Seasonal profile
Savings vary by location, time of year and daily operating pattern.
Glycol protection
Outdoor coils and pipework often need suitable freeze protection.
Control strategy
Stable automatic changeover is important when ambient conditions move.
Complete hire package
EVERYTHING
CONNECTED.
One accountable team can coordinate the equipment around your duty, site and programme.
- Air-cooled chillers
- Pumps and buffer tanks
- Plate heat exchangers
- Flexible hoses and fittings
- Temporary power and distribution
- Installation and 24/7 support
Frequently asked questions
PRACTICAL
ANSWERS.
Does free cooling mean no electricity is used?+
No. Fans and pumps still use power, but compressor demand can be reduced or avoided when conditions are suitable.
Can free cooling work in summer?+
It depends on the required water temperature and outdoor conditions. Hybrid systems can use partial free cooling when full free cooling is not available.
How long can I hire a chiller for?+
Hire periods can cover a short breakdown, a planned maintenance window, seasonal demand or a longer project. We shape the agreement around the programme.
What happens if there is a problem on hire?+
Gradwell Chiller Hire provides technical support throughout the hire. For urgent requirements, the response team is available 24 hours a day.
Specialist chiller hire
Start with the requirement
WHAT NEEDS
COOLING?
Share your required temperatures, process load, site and dates. Our specialists will recommend a practical temporary system.
Request a quote