Instructions

Prepare a paper explaining how building materials are ignited through heat transfer. You will provide within the paper a detailed description of the ignition process. You will also describe the differences in heat transfer as related to building construction. The paper will focus on the concepts of ignition, ignition of fuels, heat, and the methods of heat transfer.

The paper will answer each of the variables listed below and summarize how the variables will impact building construction under fire conditions.

• Explain the types of ignition: piloted ignition and autoignition.
• Describe the concept of ignition based on the type of ignition.
• Analyze the concept of heat in relation to building materials.
• Describe the concept of ignition temperature for solids.
• Describe the manner by which convection and radiation affect the spread of a freely burning fire.
• Explain conduction, convection, and radiation heat transfer.
• Describe the concept of heat flux and its significance to the hazards of heat transfer from a fire.
• Describe different types of explosions.

Each paper will find the convection heat flux. You are required to choose one of the four questions below and show all of your calculations. Describe the concept of heat flux and its significance to the hazards of heat transfer from a fire as it is related to building construction:

1. What is the convection heat flux from a turbulent flame to a cold wall at 68o Fahrenheit? The estimated h value is 10W/m2 • K or 10W/m2 • oC, with the maximum timed-averaged flame of 1832oF.

or

2. What is the convection heat flux from a turbulent flame to a cold wall at 72o Fahrenheit? The estimated h value is 20W/m2 • K or 20W/m2 • oC, with the maximum timed-averaged flame of 2732oF.

or

3. What is the convection heat flux from a turbulent flame to a cold wall at 86o Fahrenheit? The estimated h value is 5W/m2 • K or 5W/m2 • oC, with the maximum timed-averaged flame of 1652oF.

or

4. What is the convection heat flux from a turbulent flame to a cold wall at 60o Fahrenheit? The estimated h value is 10W/m2 • K or 10W/m2 • oC, with the maximum timed-averaged flame of 2500oF.

Your response must be at least two pages and no longer than four pages in length. Include at least three references with one being your textbook. The paper will be written in APA style. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying APA citations. The title and reference pages are not included in the page-count requirement.