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INTRODUCTION The light bulb is one of many inventions taken for granted in today's society. The advent of the modern light bulb has created safe...

HEat Transfer
I need some advice if my project was done corrrectly or if any corrections need to be done. I dont need you to correct it , just a advise me, if any poblems existe to look over it. i will correct it .

INTRODUCTION The light bulb is one of many inventions taken for granted in today’s society. The advent of the modern light bulb has created safe environments for work, play, and other things of the sort. However, one problem encountered while using light bulbs is the heat dissipated from said source. One of the basic laws of physics is the law of Conservation of Energy. This is also known as the first law of thermodynamics. It is simply a physical principle that the total amount of energy in a system will always remain constant. In other words, energy can change forms or be transferred to another object but the sum of all forms of energy must remain constant at any time, t. Energy can never be destroyed or created. Thus, the amount of heat generated from a bulb depends on said bulb’s efficiency (η). For example, if a 100 watt bulb is used, 100 watts of electrical energy will be converted to either light or thermal energy (heat). The efficiency of a bulb is the bulb’s ability to turn this electrical energy into light. The “waste” product is heat. Therefore, η=(desired energy produced)/(input energy). The three most common types of light bulbs are incandescent bulbs, halogen bulbs, and fluorescent bulbs. Incandescent bulbs produce light by heating a tungsten filament wire to extreme temperatures with electricity. This wire then glows. These bulbs are approximately 2.1% efficient. Halogen bulbs are incandescent bulbs filled with some sort of halogen gas, usually iodine or bromine. The gas redeposits the tungsten that evaporated onto filament. This increases the life of the bulbs and keeps the bulbs clear. Halogen bulbs typically have an efficiency of 3.5%. Fluorescent light bulbs are approximately 8.2% efficient. Light is produced
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in these bulbs by exciting mercury vapor with electricity. The excited mercury atoms produce an ultraviolet light that causes a phosphor to fluoresce, producing visible light. PROBLEM DESCRIPTION Observing these efficiencies, one can clearly see that most of the energy input is converted to thermal energy. This can, and will, wreak havoc on electricity bills because of the need to combat the heat. In order to better understand the heat produced by a simple lighting system, the experiment performed examined the heat output at different distances from a light source. ASSUMPTIONS During this experiment, students needed to make certain assumptions. During the heat conduction portion, students assumed that the air was completely still. During the heat convection portion, students assumed air movement to be equal to 1.341 meters per second and that the velocity remains constant from the light bulb to the metal surface. It was also assumed that the bulb’s surface area is flat so as to ease calculations. As a last assumption, students assumed that all three thermocouples were calibrated and worked just as effectively as the others. METHODS AND ANALYSIS In this experiment, students used a halogen light bulb sheltered with a basic aluminum work light fixture, a ruler, and a Type-J thermocouple. Students set up the light fixture so as to
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As you asked only for my advice I will put forward some of these points:
a) You have considered the conduction and convection mode of heat transfer that was good but in
my views even Radiation...

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