Title: Liquid desiccant based dehumidification and cooling system

Abstract

A liquid desiccant system including a high desorber, a low desorber, and an absorber that are in fluid communication with a working solution, where the high desorber provides rejected water vapor from the working fluid for condensation in a condenser of the low desorber that provides heat for rejection of additional water from the working solution in the low desorber effectively multiplying the heat provided for desorption. The low desorber provided the concentrated working solution to the absorber where water from ambient air is condensed into the concentrated working solution to provide a dilute working solution within a working solution conduit of the absorber that is thermally coupled to an internal cooler of the absorber. In some embodiments, the working solution can be an aqueous solution of at least one ionic liquid.

Inventors:

Moghaddam, Saeed

Issue Date:

2021-08-17

Research Org.:

Univ. of Florida, Gainesville, FL (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1840350

Patent Number(s):

11090605

Application Number:

16/384,423

Assignee:

The Florida State University Research Foundation, Inc. (Gainesville, FL)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D2252/30 - Ionic liquids and zwitter-ions
B01D2259/65 - Employing advanced heat integration, e.g. Pinch technology
B01D53/1425 - {Regeneration of liquid absorbents}
B01D53/263 - {by absorption}
B01D53/268 - {by diffusion}
B01D53/28 - Selection of materials for use as drying agents

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

C09K5/047 - {for absorption-type refrigeration systems}

F - MECHANICAL ENGINEERING F24 - HEATING F24F - AIR-CONDITIONING

F24F2003/1458 - {using regenerators}
F24F3/1411 - {by absorbing or adsorbing water, e.g. using an hygroscopic desiccant}
F24F5/0014 - {using absorption or desorption}

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS

F25B15/00 - Sorption machines, plant, or systems, operating continuously, e.g. absorption type
F25B15/008 - {with multi-stage operation
F25B15/02 - without inert gas

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DOE Contract Number:  

EE0006718

Resource Type:

Patent

Resource Relation:

Patent File Date: 04/15/2019

Country of Publication:

United States

Language:

English