Air Conditioner Waste Water Recovery System

Votes: 5
Views: 8788

Water drips from standard Air Conditioner (A/C) units because of condensation, but what if the water was to be collected using an automatic device?

My idea looks at recovering waste condensed water from A/C units that run for several months over the year. In order to do so a device fills a tank with water automatically.

The preliminary tests with a home made A/C water recovery system showed that, an average of 27 liters (7 gallons) of water were produced by a standard home A/C in 1 day. If the A/C runs for 10 months in a year, the waste water may reach about 8000 liters (2,114 gallons).

The tests also showed that the amount of water produced in the day does not differ too much compared to the night. This wasted water could be used for plants or gardens, when needed.

Figure 1 shows a schematic of the A/C water recovery system. Figures 2 and 3 show the home made A/C water recovery system test prototype.

An A/C water recovery system, like the one proposed, could help the world save a little bit water throughout the future.


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  • Name:
    Xabier Sanjuan
  • Type of entry:
  • Profession:
  • Number of times previously entering contest:
  • Xabier's favorite design and analysis tools:
    Finite Element Analysis (Structural, Thermal and Computational Fluid Dynamics)
  • Xabier's hobbies and activities:
    Kayaking and Canoeing.
  • Xabier is inspired by:
    To help making a better, safer and sustainable World.
  • Software used for this entry:
    MS Excel, MS Power Point
  • Patent status: