Renewable Long-Life Biocidal Hydrophilic Coating for Condensing Heat Exchangers

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$124,972.00
Award Year:
2013
Program:
SBIR
Phase:
Phase I
Contract:
NNX13CJ24P
Award Id:
n/a
Agency Tracking Number:
124745
Solicitation Year:
2012
Solicitation Topic Code:
H3.03
Solicitation Number:
n/a
Small Business Information
Creare, Inc. (Currently CREARE LLC)
NH, Hanover, NH, 03755-3116
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
072021041
Principal Investigator:
Michael Izenson
Principal Engineer
(603) 643-3800
mgi@creare.com
Business Contact:
James Barry
President
(603) 643-3800
contractsmgr@creare.com
Research Institution:
Stub




Abstract
Future manned spacecraft and lunar or Mars outposts will need a condensing heat exchanger (CHX) to control humidity in the cabin atmosphere. Condensing surfaces must be hydrophilic to control the condensate flow and ensure efficient operation, and biocidal to prevent growth of microbes and formation of biofilms on condensing surfaces. Coatings must be extremely stable, adhere to the condensing surface, and maintain hydrophilic and biocidal properties for many years. We propose to develop a zeolite coating system that incorporates two key innovations: (1) modifications to the coating chemistry to enable much longer life than prior coatings, and (2) an in situ cleaning process that can decontaminate the surface and renew hydrophilic properties. In Phase I we will prove the feasibility of our approach by developing preliminary cleaning formulations, developing chemical analysis models to predict coating lifetime, producing trial coatings, and demonstrating coating performance and the effects of cleaning. In Phase II we will scale up and refine the coating process, produce sample coupons and heat exchanger cores, and measure the coating performance after long-term exposure to prototypical environments. We will also develop and demonstrate a coating regeneration process and associated hardware suitable for ground testing and eventual demonstration on the International Space Station (ISS).

* information listed above is at the time of submission.

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