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OSTRO-L W 90 put to the test: certified precision and reliability
A major international company chose our OSTRO dry coolers to provide precision cooling for a large data centre in Ireland.
Due to the mission-critical nature of the application, the OSTRO units had to meet very tight specifications, both in terms of cooling capacity and noise levels, due to their proximity to other company premises.
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The IMQ test: guaranteeing the performance of our OSTRO-L W 90
In order to guarantee the highest level of quality and reliability, we subjected one of the OSTRO units in the order to a rigorous test certified by IMQ (Italian Quality Mark Institute).
The aim was to verify
The test was carried out according to two standards
Test operating conditions
Precise operating conditions were maintained during the test:
Test certified performance
The test showed the following key data:
Calculated cooling capacity:
579,6 kW.
Sound power level:
92 dB(A) measured over the entire unit.
Rated power consumption:
14.760 W.
(The test was carried out on half the unit, using one coil and three fans, to test performance. The noise level was measured over the entire unit).
The results
The test confirmed that the operating parameters of the OSTRO dry cooler were within the tight 3% tolerance required by the customer. This result confirms STEFANI’s ability to provide reliable and high performance solutions, ideal for mission-critical applications such as data centres.
The OSTRO range of dry coolers by STEFANI
The OSTRO dry coolers by STEFANI are designed to meet high capacity heat exchange requirements in free cooling. They stand out for:
High heat exchange capacity
Small footprint as a result of compact design
Optimised EC electronic motorisation for low consumption.

OSTRO-L W 90 put to the test: certified precision and reliability
A major international company chose our OSTRO dry coolers to provide precision cooling for a large data centre in Ireland.
Due to the mission-critical nature of the application, the OSTRO units had to meet very tight specifications, both in terms of cooling capacity and noise levels, due to their proximity to other company premises.

The IMQ test: guaranteeing the performance of our OSTRO-L W 90
In order to guarantee the highest level of quality and reliability, we subjected one of the OSTRO units in the order to a rigorous test certified by IMQ (Italian Quality Mark Institute).
The aim was to verify
The test was carried out according to two standards
Test operating conditions
Precise operating conditions were maintained during the test:
Test certified performance
The test showed the following key data:
Calculated cooling capacity:
579,6 kW.
Sound power level:
92 dB(A) measured over the entire unit.
Rated power consumption:
14.760 W.
(The test was carried out on half the unit, using one coil and three fans, to test performance. The noise level was measured over the entire unit).
The results
The test confirmed that the operating parameters of the OSTRO dry cooler were within the tight 3% tolerance required by the customer. This result confirms STEFANI’s ability to provide reliable and high performance solutions, ideal for mission-critical applications such as data centres.
The OSTRO range of dry coolers by STEFANI
The OSTRO dry coolers by STEFANI are designed to meet high capacity heat exchange requirements in free cooling. They stand out for:
High heat exchange capacity
Small footprint as a result of compact design
Optimised EC electronic motorisation for low consumption.