Indirect evaporative cooler using membrane-contained, liquid desiccant for dehumidification

Kozubal, Eric Joseph; Slayzak, Steven Joseph

Title: Indirect evaporative cooler using membrane-contained, liquid desiccant for dehumidification

Patent · Tue Jul 08 00:00:00 EDT 2014

OSTI ID:1143660

Kozubal, Eric Joseph; Slayzak, Steven Joseph

An indirect evaporative cooler for cooling inlet supply air from a first temperature to a second, lower temperature using a stream of liquid coolant and a stream of exhaust or purge air. The cooler includes a first flow channel for inlet supply air and a second flow channel adjacent the first for exhaust air. The first and second flow channels are defined in part by sheets of a membrane permeable to water vapor such that mass is transferred as a vapor through the membrane from the inlet supply air to a contained liquid desiccant for dehumidification and also to the exhaust air as heat is transferred from the inlet supply air to the liquid coolant. A separation wall divides the liquid desiccant and the coolant but allows heat to be transferred from the supply air to the coolant which releases water vapor to the counter or cross flowing exhaust air.

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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC36-99GO10337

Assignee:: Alliance for Sustainable Energy, LLC (Golden, CO)

Patent Number(s):: 8,769,971

Application Number:: 12/864,071

OSTI ID:: 1143660

Country of Publication:: United States

Language:: English

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