US 11,674,699 B2
Method for production of water from air based on low-temperature heat, and machine and system thereof
Vincenzo Maria Gentile, Monreale (IT); Marco Simonetti, Turin (IT); and Giovanni-Vincenzo Fracastoro, Turin (IT)
Assigned to Politecnico Di Torino, Turin (IT)
Appl. No. 16/754,477
Filed by Politecnico Di Torino, Turin (IT)
PCT Filed Oct. 1, 2018, PCT No. PCT/IB2018/057605
§ 371(c)(1), (2) Date Apr. 8, 2020,
PCT Pub. No. WO2019/082000, PCT Pub. Date May 2, 2019.
Claims priority of application No. 102017000120788 (IT), filed on Oct. 24, 2017.
Prior Publication US 2020/0340693 A1, Oct. 29, 2020
Int. Cl. F24F 3/14 (2006.01); B01D 53/26 (2006.01)
CPC F24F 3/1423 (2013.01) [B01D 53/261 (2013.01); B01D 53/265 (2013.01); B01D 2257/80 (2013.01); B01D 2259/4009 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for production of water from air, comprising cyclically and successively repeating the following two phases:
a first phase a), which includes the following steps:
a1) taking air from the outside,
a2) conveying said air towards an enthalpic exchanger containing one or more surfaces and an adsorbent material in contact with said one or more surfaces, wherein said adsorbent material internally accumulates moisture that is present in said air, wherein said enthalpic exchanger comprises a plurality of lamellar panels and wherein said adsorbent material is applied onto said lamellar panels or is in granular form and is arranged between two adjacent lamellar panels of said enthalpic exchanger,
a3) outputting dry air, and
a second phase b), which includes the following steps:
b1) supplying a quantity of sensible heat to said one or more surfaces of said enthalpic exchanger by means of a low-temperature heat source, thereby heating said adsorbent material of said enthalpic exchanger by conduction via contact between said one or more surfaces and said adsorbent material,
b2) conveying an air flow through said enthalpic exchanger, wherein said air in contact with said enthalpic exchanger receives from said enthalpic exchanger (i) said quantity of sensible heat supplied by said low-temperature heat source to said one or more surfaces and said adsorbent material of said enthalpic exchanger and at the same time (ii) said moisture contained in said adsorbent material of said enthalpic exchanger, said quantity of sensible heat being such as to compensate for the temperature reduction caused by water evaporation at said adsorbent material in order to perform isothermal regeneration of said adsorbent material, and
b3) bringing said air having received said quantity of sensible heat and said moisture from said enthalpic exchanger to ambient temperature in order to cause the moisture contained therein to condense, thereby obtaining water.