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New Optical Sensor Suite for Ultrahigh Temperature Fossil Fuel Applications:
Semiannual Technical Progress Report for October 2003 to March 2004

May, Russell G.
Peng, Tony
Flynn, Tom

Prime Research, LC

In the pdf format this document has 32 pages and is 809kb.

Table of Contents

1

Introduction

1

2

Executive Summary 2

3

Experimental Progress 3
 

3.1

Requirements definition study 3

3.2

Development of high temperature optical cladding for sapphire fibers 4

4

Results and Discussion 5
 

4.1

Requirements definition study 5
 

4.1.1

General applications and requirements 6

4.1.2

Requirements specific to ultrasupercritical boiler plants 7

4.2

Development of high-temperature optical cladding for sapphire fibers 12
 

4.2.1

The effects of firing profile 14

4.2.2

The effects of firing atmosphere 14

4.2.3

The effects of powder particle size 14

4.2.4

The effects of slurry thickness (viscosity) 15

4.2.5

The high temperature stability of the clad sapphire fiber 17

4.2.6

The EDS chemical analysis 17

5

Conclusion 19
 

5.1

Problems encountered in mitigating strategies 20

6

References 22