NASA SBIR 01-1 Solicitation


PROPOSAL NUMBER: S2.04-9901 (For NASA Use Only - Chron: 012098 )
Electrochromic Variable Emissivity Devices for Thermal Control

Significant modulation of solar reflectance, solar absorption, and IR emissivity can be achieved with electrochromic devices operating at very low voltages. They use very little energy and can maintain their state of solar reflectance, solar absorption, and IR emissivity for some time after the potential has been removed. Devices fabricated as a monolithic stack of solid state inorganic materials can withstand the harsh space environment. These kinds of Variable Electrochromic Devices (VEDs), with no moving parts, are well suited for active thermal control of spacecraft.
The Phase I effort will produce 100cm2 VEDs on thin metal substrates with an areal density, for the electrochromic film stack, of 7g/m2 and modulations of emittance from 0.1 to 0.5 and solar absorptance from 0.2 to 0.8. The optical, thermal, and electrical performance of these devices will be characterized. A detailed calculation will be performed to predict thermal performance of these electrochromic coatings.
In Phase II of this effort, samples of the electrochromic devices will be tested to determine their tolerance to high vacuum, UV light, and bombardment with energetic oxygen ions. The design will be optimized to improve performance, reliability, and durability in the space environment.

There are three major areas for the potential commercialization of variable emissivity devices. In the aerospace industry, they show promise for thermal management of satellites. They can also be used for the dimensional stabilization of rigid space structure as well as for Gossamer structures. A second application for electrochromics is for architectural glazings for solar control, especially when the films can be deposited on thin polymer sheets for the retrofit market. There has also been interest in using electrochromics with fiberglass panes to improve energy efficiency in industrial buildings. The third application for electrochromics is to provide for security and energy efficient applications on automobile windows and sunroofs.

NAME AND ADDRESS OF PRINCIPAL INVESTIGATOR (Name, Organization Name, Mail Address, City/State/Zip)
Nick Kislov, PhD
Eclipse Energy Systems, Inc.
2345 Anvil Street North
Tampa , FL   33710 - 9998

NAME AND ADDRESS OF OFFEROR (Firm Name, Mail Address, City/State/Zip)
Eclipse Energy Systems, Inc.
2345 Anvil Street North
Tampa , FL   33710 - 9998

Form Printed on 06-19-01 15:44