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ANNEX 85

IEA-EBC ANNEX 85: Indirect Evaporative Cooling

Buildings account for nearly 1/3 of the total energy consumption, 20-30% of building energy is used for air conditioning and maintaining indoor thermal comfort in hot seasons. As predicted, many regions are going to change from non-air conditioning temperate zones to air conditioning zones, when there is a 2 °C lift of the average global temperature due to climate change.  Especially for Europe, Southeast Asia, the Middle East, and South America, as UNEP predicted. Changing the mode of air conditioning is one of the important solutions to meet the cooling demand without increasing electricity consumption and carbon emission.

Although over 85% of cooling around the world is achieved by mechanical refrigeration, more than 40% buildings of the regions where cooling is needed can be cooled by evaporative cooling instead mechanic, due to the dry climates.

To study the feasibility and provide the roadmap of using indirect evaporative cooling technology in different dry regions of the world is the main focus of the proposed project.