Choosing a cooling solution for a factory: Total Cost of Ownership

Posted by Paul Langford on 24/03/15 11:30

totalcostofownershipWhen choosing a cooling solution for a factory, it is important not to focus only on the initial investment, but to consider all the elements that make up the total cost of ownership (TCO) of the system.

What makes up TCO

With a typical traditional air conditioning system, day-to-day energy use can account for up to around 85% of the TCO – for the fans, pumps and cooling system. On the other hand, with evaporative cooling these running costs tend to be dramatically lower.

Comparing TCO for different cooling solutions: a real life example

Let’s look at an example. Dutch company Fonterra looked at both chilled water air conditioning and evaporative cooling systems for their dairy factory.

The first solution would have required 750 kW to maintain the temperature and humidity conditions Fonterra required for its plant.

By contrast a scheme of Colt CoolStream evaporative cooling units - supplemented by air handling units to address the need for filtration - only uses around 38 kW to achieve the same conditions. The CoolStream system barely uses around 5% of the energy that a chilled water air conditioning system would need to maintain the same conditions.

Cutting the energy usage from 750 kW down to 38 kW results in dramatic savings in running costs over the lifetime of the system.

Not surprisingly, Fonterra opted for the evaporative cooling solution and is now enjoying the considerable savings it has brought.

Read the full case history.

If you want to know more about evaporative cooling, you can:

Paul Langford - Engineering directorPaul Langford is an Engineering Director experienced in product development, manufacturing & testing for HVAC, solar shading, louvre systems and smoke control.

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Topics: Productivity, HVAC, Energy saving, Evaporative cooling