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Active Cooling Systems
Inside Active Cooling Systems:
Active Cooling Systems
Active vs. Conventional
Active Cooling Systems Examples
COMPARISON BETWEEN ACTIVE COOLING, CONVENTIONAL & FREE COOLING SYSTEMS
 
Item
Active Cooling System
Conventional
Air-Conditioner
Free Cooling Systems
FLEXIBILITY
The Thermal Transfer Heat Exchanger and Fan are designed for the maximum RBS load
To increase cooling, must exchange existing units with new larger capacity units
To increase cooling, must exchange existing units with new larger capacity units
LIFE CYCLE AND MAINTENANCE COST
Long Life Cycle
- Designed for 12 year life span
- Low maintenance cost
Short Life Cycle
- Domestic use designed for 3 year lifespan
- High maintenance
Medium Life Cycle
- Designed for 6 year lifespan
- A very high maintenance cost
AC POWER
Independent of AC Power operation for up to a maximum prescribed time
Totally independent of AC Power at all times with no back-up
Totally independent of AC Power, but will introduce external ambient air if required. However, only if external ambient is low enough
DIESEL GENERATED AC POWER
Cyclic diesel generated power required in single configuration
Constant diesel generated power required in mutual configuration
Constant diesel generated power required for continuous operation.  For short duration failures, free cooling mode is activated which will operate on station battery.  However, is dependent on external temperature and humidity
THERMAL
BUMPING
No thermal bumping due to constant pre-set operation approximately 25°C
Thermal bumping due to thermostatic controlled run/stop operation.
Pre-set to +5°C
Reduced thermal bumping due to
pre-set temperature of 15°C
HUMIDITY
No variation upon AC power failure
Extreme variations due to large cyclic temperature variations and upon return of failed AC mains supply
Small variation due to high operating temperature and lower cyclic temperature variations
SAFETY
Full set of extendable controllers monitoring alarms on all critical functions
No alarms available
Minimal alarms available
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brolaz@brolaz.com
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