The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 1991
Filed:
May. 01, 1990
Chen-Yen Cheng, Albuqerque, NM (US);
Other;
Abstract
In a process of the present invention, a first water vapor at a is absorbed into a solution containing water and a non-volatile solute such as lithium bromide at substantially the same pressure but at a temperature that is higher than the pure water saturation temperature corresponding to the absorption pressure. The heat released in absorption is transmitted to a mass of pure water to generate a second water vapor at a second pressure that is substantially higher than that of the first vapor, therby diluting the absorbing solution. The absorption of first vapor, generation of second vapor and dilution of the absorbing solution are collectively referred to as a vapor pressure enhancement operation activated by dilution of the absorbing solution. The methods and apparatuses of the present invention may also be used in enhancing vapor pressure of a non-aqueous solvent. In one varation, the vapor pressure enhancement is accomplished across a vertical heat transfer wall provided with two falling liquid films. The film on one side is an absorbing solution while on the other is pure water. First vapor brought in contact with the absorbing solution is absorbed at substantially the same pressure but at a temperature higher than the pure water saturation temperature. The heat released is transmitted through the vertical heat transfer wall to vaporize water and generate second vapor at a second pressure that is higher than that of the first vapor.