- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 26 Sep 2017
Everything you need to know about evaporative cooling
Evaporative cooling units work by recreating the earth’s natural cooling process and providing a constant flow of cool air. This method of cooling the air has been used for centuries, as it’s a more efficient, effective, and environmentally friendly solution. These units can be used for both commercial and industrial buildings, as these areas often require the frequent opening of doors.
 How does evaporative cooling work?
Evaporative cooling units use evaporation in order to cool the air; hot air from the outside is pumped in through water-soaked pads and, as air is blown over them, the water evaporates and any heat in the air is absorbed. This process lowers the air temperature, as a fan pushes the cooled air through a ducting system.
 Differences between evaporative cooling and air conditioning
Although serving the same cooling purpose, evaporative cooling units and air conditioning units are very different. With evaporative cooling, having air circulating into the space is beneficial in order to introduce fresh air into the environment and to reduce the possibility of poor indoor air quality.
Air conditioning units, however, remove the humidity from the air and produce dry, cold air. These units function at their best in completely air tight spaces, becoming more inefficient when air comes into the room from the outside.
 Environmental benefits
As it mimics the earth’s natural cooling process, evaporative cooling is more beneficial for the environment. The air is cooled by water instead of through the use of refrigerants, and there is less use of electricity. Evaporative cooling uses approximately less 90% of the total amount of electricity that air conditioning units require.
The use of electricity can impact the environment tremendously, and controlling the environment inside buildings can use up a lot of electricity. To decrease the use of electricity and protect the environment, evaporative cooling units are a solution.
 Benefits of evaporative cooling
Evaporative cooling provides many benefits, such as:
 Low CO2 emissions
 Inexpensive solution
 Fresh air
 Adds moisture to air
--Heritage Heating and Cooling 13:41, 21 Aug 2017 (BST)
 Related articles on Designing Buildings Wiki
Featured articles and news
EIRs define what is needed from the employer's internal team and suppliers for project development.
The full keynote speech by Sir James Bevan, Environment Agency CEO, on the future of flood protection.
After 6 years, the Metropolitan Police admit they supplied information to the construction workers blacklist.
It's nearly two years since level 2 BIM was made a minimum requirement on certain public projects. But what actually is it?
Renowned water expert Prof. Martin van Veelen challenges political leaders to do more on safe and clean water supplies.
Inquiry criticises PwC for "milking the Carillion cow dry".
A recent roundtable discussed the future of transport in the UK – including the role of connected and autonomous vehicles.
Architects report cancelled projects and uncertainty concerns in a new RIBA survey on Brexit.
Quality helps eliminate defects, but it can also drive improvement and increase profit.
PII provides insurance cover against negligence claims and is widely used where services are being provided.
Rogers Stirk Harbour + Partners release first images of their planned new addition to the Toronto skyline.