Non-Toxic, Low Freezing, Drop-in Replacement Heat Transfer Fluids, Phase II

Metadata Updated: May 2, 2019

Drop-in heat transfer fluids replacements for ITCS and EVA suits were down-selected and characterized in Phase I for various metrics including density, heat capacity, viscosity, freezing point, freezing expansion, toxicity, NFPA rating, flash point, materials compatibility, heat transfer coefficients, and several Figures of Merit related to heat transfer, pressure drop, and pump work. Optimized solutions had freezing points of about -30 C and freezing volume expansions 50%-75% less than water. The toxicity of the fluids is predicted to be "low" and also compatible with SS, BNi-2, PTFE and pEVA. The heat transfer Figures of Merit were 75-100 relative to water ("100"), and better than propylene glycol and organic heat transfer fluids. The pump work metric was only about 60% higher than water. We also identified a superior pH buffering agent to compensate for CO2 absorption and demonstrated a biocide "package" to prevent any microbial growth. The Phase II effort will optimize and comprehensively characterize these fluids (including toxicity), perform life testing, and deliver fluids to NASA at the end of the project.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Dates

Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_6046
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id 5fb2f223-69a4-4452-9902-3190d981584e
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2007-12-01
Homepage URL https://techport.nasa.gov/view/6046
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 2d3002c9284721d226dd573ac5ef03f0749938fa
Source Schema Version 1.1

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