EXTRACTION VS. FREE COOLING
SOLUTION IN south AFRICA

A large mobile operator wanted to evaluate the difference between their existing extraction solution and a Dantherm Free Cooling solution – and achieved impressive results.

One-year test setup

The customer wanted to test two similar shelters with two cooling equipment setups:

  • Same type of air conditioner
  • Two different Free Cooling solutions (with controller), an extraction version and a Dantherm Flexibox with an ACUE Controller.
  • The two shelters were located in the same proximity, had the same transmission equipment (and similar traffic on the site) and the same temperature settings.
  • The measurement was done according to how much the existing air conditioner needed to run - when it was controlled by either the extraction solution or the Dantherm Flexibox solution.
  • The test ran for one year from April 2012 to April 2013.

Test results revealed possible savings of 80 %

The test showed significant differences in energy consumption. The exhaust controller ran the air conditioner to consume 22.000 kWh, whereas the Dantherm-controlled site consumed 4.300 kWh.

The answer to this difference lies in the fact that there are several ways to control temperatures at a Telecom site. The Dantherm-developed controller for the Flexibox is a well-proven solution with an intelligent, energy-saving strategy. This controller focuses on both the control of the Free Cooling Flexibox and the control of the air conditioner. See chart below for total results:

Africa Case Results
Booming energy prices means fast ROI

The Dantherm Flexibox solution is estimated to generate energy savings of 1.770 EUR/year in 2013 on each of the customer's sites - or 80 % energy savings in total. The energy company of the customer is forecasting 20-30 % price increases/year the coming 3 years, so the solutions will achieve ROI very quickly for this specific case.

More Technology?

Read in detail about the technology behind our Free Cooling solutions.

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