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A renewable solution to keep cool in a warming world

The International Institute for Applied Systems Analysis writes on Tech Explore that seawater air-conditioning (SWAC) is an emerging renewable alternative to traditional air conditioning.

The C3 Take
  • SWAC is more feasible for island nations who are closer to deeper oceans.
  • SWAC uses cool water from deep ocean depths to provide cool air for homes and buildings.
  • This method of air conditioning has higher initial costs than traditional AC but has lower energy costs than conventional methods.

“Conventional air-conditioning (AC) is the most common technology used for cooling and represents a considerable share of energy demand in warmer regions. An alternative that is not frequently considered, is seawater air-conditioning (SWAC)—a renewable alternative for cooling that involves pumping seawater from ocean depths of around 700 to 1200 meters and temperatures of 3°C to 5°C to the coast, where it exchanges heat with a district cooling system, and returns the warmer water to the ocean.”

Read the full article here.

The views and opinions expressed are those of the author’s and do not necessarily reflect the official policy or position of C3.

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