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Engineering360: "DARPA seeks proposals for tech that extracts drinking water from the atmosphere"

01/08/2020 2:47 PM

Read Engineering360 article: DARPA seeks proposals for tech that extracts drinking water from the atmosphere.

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Join Date: Jan 2020
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Re: DARPA seeks proposals for tech that extracts drinking water from the atmosphere

01/17/2020 3:08 PM

In an information available age, I am surprised that DARPA is going out to world with a project request that was recently (~18mo ago) the subject of an X-Prize competition....to produce drinking water from air at a reasonable cost, etc. There were quite a few submissions and a range of devices that condense humidity out of the air, more or less efficiently depending on the ambient conditions, collect, filter, purify and store for people to draw from a reservoir. Some were built into shipping containers, others were almost small enough for a home or office, some were solar powered, etc. The concept is deceiving...none is 'making' water out of air...that is not possible...but they do condense water....some natural systems or others using nets to cause high humidity (clouds/dew) to condense out and collect are used in coastal areas in Latin America....so it would seem that other than some military specifications, DARPA could do an initial review of a fair number of devices and decide how to modify or refine their request to make it different and better than the recent X-Prize competition....at least the DARPA request states "extracts water" vs the claims of some early commercial systems that they are 'making water out of air'!

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