|
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 |