Insulation :: essays research papers fc

Insulation Introduction The experimenter is testing on denim, cotton T-shirt material, wool fabric, thermal underwear, polyester fabric, and a Ziplock bag with no insulator. From research the experimenter learned that wool is a fine soft wavy hair that forms all or part of the protective coat of a sheep. Since ancient times it was harvested to provide clothing and is an important part in textile trade because of its insulation. Woolen fabric is when the woolen system uses short or mixed long and short fiber where no combing is done. It has a rough appearance and is most suitable for blankets, overcoats, and tweeds. Denim which the experimenter is also testing is the material used to make blue jeans and is currently one of the world's most popular fabrics. It is fairly heavy and is made with a blue cotton warp and a white cotton filling (Groilers, 1996). The thermal underwear is duofold, with an outer layer made of 65% cotton, 25% wool, and 10% nylon, and an inner layer made of 100% cotton. It's the winter again and the weather is becoming colder. Each morning many people wonder what to wear to stay as warm as possible, but they aren't sure which material will keep them warmest. The experiment was chosen to see which clothing insulator retains the most heat. "Insulation is material that protects against heat, cold, electricity, or sound." (Science Encyclopedia, 1984). In this case the insulation will be protecting against a cold temperature. The hypothesis is if denim, cotton T-shirt material, wool fabric, polyester fabric, thermal underwear, and a Ziplock bag with out insulating material are tested to see which one retains the most heat, then wool fabric will retain the most heat because it holds an important place in today's textile trade because of its good insulation and the fact that it comes from the protective coat of sheep who need to stay warm and use that as their insulator. Procedure The first thing the experimenter does is fill the inside of five, gallon-sized Ziplock bags with the insulation material so it is one centimeters thick all around. Leave the sixth Ziplock bag empty because it will serve as the control group. Then fasten the insulating materials to the inside of the gallon sized Ziplock bag with adhesive tape. Next the experimenter boils ten pints of tap water and let it cool until (using the candy thermometer) the temperature drops to 49 degrees Celsius. Then immediately fill each of the six canning jars with equal amounts of the water. Immediately after that drop a regular thermometer into each jar, and cap it