Design Guide 111 9/25/2008 Eclipse Winnox Burners WX Series Version 1
Copyright Copyright 2005 by Eclipse, Inc. All rights reserved worldwide. This publication is protected by federal regulation and shall not be copied, distributed, transmitted, transcribed or translated into any human or computer language, in any form or by any means, to any third parties, without the express written consent of Eclipse, Inc.
About This Manual Audience This manual has been written for people who are already familiar with all aspects of a nozzle-mix burner and its add-on components, also referred to as “the burner system”. These aspects are: • Design / Selection • Use • Maintenance The audience is expected to have previous experience with this type of equipment. Winnox Documents Design Guide No.
Document Conventions There are several special symbols in this document. You must know their meaning and importance. The explanation of these symbols follows below. Please read it thoroughly. Danger: Indicates hazards or unsafe practices which WILL result in severe personal injury or even death. Only qualified and well trained personnel are allowed to carry out these instructions or procedures. Act with great care and follow the instructions.
Table of Contents 1 Introduction..................................................................... 6 Product Description.......................................................... 6 2 Safety............................................................................... 7 Introduction....................................................................... 7 Safety............................................................................... 7 Capabilities.................................................
Introduction Product Description 1 The Winnox version 1 is a nozzle-mix type, low-emmisions burner designed for direct air heating, indirect air heating, and oven applications up to 1800°F (980°C). The burner package includes a combustion air blower and an air:gas ratio regulator to fire over a wide gas turndown range at a controlled ratio.
Safety Introduction 2 This section is provided as a guide for the safe operation of Winnox burner system. All involved personnel should read this section carefully before operating this system. Danger: Safety The Winnox burners, described herein, are designed to mix fuel with air and burn the resulting mixture. All fuel burning devices are capable of producing fires and explosions if improperly applied, installed, adjusted, controlled, or maintained.
System Design Design Design Structure The design process is divided into the following steps: 1. Burner Option Selection Including: • Burner Model / Size Selection • Fuel Type 2. 3. 4. 5. 6. 7.
Step 1: Burner Option Selection Step 1 describes how to select burner options to suit an application. Use the Winnox Price List and Datasheets No. 111 when following this selection process. Caution: Consult EFE-825 Eclipse Engineering Guide, or contact Eclipse if you have special conditions or questions. Burner Model / Size Selection Consider the following when selecting the burner size: • Heat Input: Calculate the required heat input to achieve the required heat balance.
Step 1: Burner Option Selection (Continued) Combustor Type Select a combustor type based on the application: Recommended Maximum Chamber Temperature °F (°C) Model Standard Alloy Tube High Temp Alloy Tube Refractory Plug 100, 200 1300° (704°) 1550° (843°) 1800° (982°) 300, 400 1300° (704°) 1550° (843°) 1800° (982°) 500, 600 1300° (704°) 1550° (843°) 1800° (982°) 1000 1100° (593°) 1400° (760°) Not Available Tube and plug temperatures should be reduced 150°F when using propane or butane.
Step 2: Packaged Blower Option Selection Air Flow Switch The air flow switch provides a signal to the monitoring system when there is not enough air pressure from the blower. If a switch is selected, it will be factory mounted. Warning: Eclipse supports the NFPA regulation requiring, as a minimum standard for main gas shut-off systems, the use of an air pressure switch in conjunction with other system components.
Step 3: Control Methodology m et ric ch io R lo n St oi Air tr o on c atio tio ra pe All standard Winnox burners are designed for: Excess air • • • air:gas ratio controlled combustion 50% excess air at high fire higher excess air at low fire Burner Control Winnox burners come with a ratio regulator that maintains the air:gas ratio. An integral minimum fuel bypass line is used to maintain and control a reliable low fire input flow. Figure 3.
Step 4: Ignition System Ignition Transformer For the ignition system, use a transformer with: • • • secondary voltage 6,000 to 8,000 VAC minimum secondary current 0.02 amps continuous full wave output DO NOT USE the following: • • • twin outlet distributor type half wave output Trial for Ignition It is required that low fire start be used. Most local safety codes and insurance requirements limit the maximum trial for ignition time (the time it takes for a burner to ignite).
Step 5: Flame Monitoring Control System Figure 3.6 Typical Sensors The flame monitoring control system consists of two main components: • • Flame Sensor Flame Monitoring Control Flame Sensor Two types can be used on a Winnox Burner: • • Flame Rod Flame rod UV scanner Flame rods are available for all Winnox burner sizes. Further information can be found in: • Info Guide 832 A UV scanner can be used on all Winnox burner sizes.
Step 6: Main Gas Shut-Off Valve Train Component Selection Eclipse can help in the design of a main gas shut-off valve train that satisfies the customer and complies with all local safety standards and codes set by the authorities within that jurisdiction. Contact Eclipse for further information. Note: Eclipse supports NFPA regulations (two gas shut-off valves as a minimum standard for main gas shut-off systems). Fuel Flow Measurement Eclipse requires a fuel flow measurement device .
Step 6: Main Gas Shut-Off Valve Train (Continued) Note: For pilot configurations using the tee fitting option to connect the pilot fuel supply ahead of the 325 series bypass regulator, back pressure to the bypass regulator must be within an acceptable limit. The bypass regulators used on all Winnox burners are designed to operate at outlet pressures up to 2 psig with inlet pressures up to 10 psig.
Appendix Conversion Factors Metric to English From To Multiply By cubic meter (m³) cubic foot (ft³) 35.31 cubic meter/hr (m³/h) cubic foot/hr (cfh) 35.31 degrees Celsius (°C) degrees Fahrenheit (°F) (°C x 1.8) + 32 kilogram (kg) pound (lb) 2.205 kilowatt (kW) BTU/hr 3414 meter (m) foot (ft) 3.28 millibar (mbar) inches water column ("w.c.) 0.401 millibar (mbar) pounds/sq in (psi) 14.5 x 10-3 millimeter (mm) inch (in) 3.94 x 10-2 MJ/m³ (normal) BTU/ft³ (standard) 2.
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