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Eclipse ThermJet Design Guide No. 205, 3/5/07
Table of contents
1
2
3
Introduction
Product Description ..........................................................................
6
Figure 1.1 The ThermJet Burner .....................................................
6
Safety
Introduction ........................................................................................
7
Safety .....................................................................................................
7
Capabilities .........................................................................................
8
Operator Training ...............................................................................
8
Replacement Parts .............................................................................
8
System Design
Design ...................................................................................................
9
Step 1: Burner model selection .......................................................
9
Step 2: Control Methodology ..........................................................
10
Figure 3.1: Modulating gas & air:
On-ratio control or excess air @ low fire ............................
12
Figure 3.2: Modulating gas with fixed-air control ......................
13
Figure 3.4: High/Low gas with fixed-air control ........................
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Step 3: Ignition System .....................................................................
16
Figure 3.5: Bypass start gas circuit schematics ...........................
17
Step 5: Combustion Air System: Blower
and air pressure switch .............................................................
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Table 3.1: Required calculation information ................................
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Table 3.2: Fuel gas heating values ...................................................
20
Example blower calculation .............................................................
21
Step 6: Main gas shut-off valve train ..............................................
22
Step 7: Process Temperature Control System ............................
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Appendix
Conversion Factors ...........................................................................
23
Key to System Schematics ...............................................................
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