Skip to Content
Find More Like This
Return to Search

Thermoelectrically cooled water trap

United States Patent

February 21, 2006
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A water trap system based on a thermoelectric cooling device is employed to remove a major fraction of the water from air samples, prior to analysis of these samples for chemical composition, by a variety of analytical techniques where water vapor interferes with the measurement process. These analytical techniques include infrared spectroscopy, mass spectrometry, ion mobility spectrometry and gas chromatography. The thermoelectric system for trapping water present in air samples can substantially improve detection sensitivity in these analytical techniques when it is necessary to measure trace analytes with concentrations in the ppm (parts per million) or ppb (parts per billion) partial pressure range. The thermoelectric trap design is compact and amenable to use in a portable gas monitoring instrumentation.
Micheels; Ronald H. (Concord, MA)
The United States of America as represented by the United States Department of Energy (Washington, DC), N/A (
10/ 383,624
March 10, 2003
U.S. GOVERNMENT RIGHTS The United States Government has rights in this invention pursuant to Contract No. DE-FG02-96ER82258 between the U.S. Department of Energy and Polestar Technologies, Inc.