Patent · US Expired

Determination of the alcohol concentration in the electrolyte of fuel cells

US6536262B2 · kind B2 · utility

5Cited by

2References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Manfred Baldauf · Erlangen, DE
Walter Preidel · Erlangen, DE

Key dates

Filing date	Mar 25, 2002
Grant date	Mar 25, 2003
Priority date	—
Expiry date	Mar 25, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/50
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a method for determining the alcohol concentration in the alcohol/water mixture of fuel cells that are operated with this mixture, in particular for direct methanol fuel cells, the alcohol/water mixture is pumped through a constriction. The differential pressure between the entry to and exit from the constriction and, if appropriate, the flow velocity of the mixture through the constriction are measured, and the alcohol concentration is determined therefrom.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.