what is heat transfer mean to clothing?

Question

Im doing a science project on heat transfer with clothes. anything to do with clothes and how they keep us warm in the winter will help me out.

Answer 1

Heat is transfered by
Conduction, Convection and Radiation
In the summer, you want to help heat from your body to escape. In the winter you want to prevent heat from escaping from your body.

What elements of clothing prevent or help each type of heat transfer?

Answer 2

the warm clothes that we use in winter dont actually generate heat for us. on the contrary they prevent flow of heat. ie. they act as heat insulators.

thus the body temperature is maintained inside the clothes and we feel warm. it doesnt allow heat to escpae to the surrounding.

try this out. enclose some ice in a woolen garment and keep it on a table aside some open ice. you will find that the ice inside the garment melts slowly. thus in this case the clothes dont allow the exteranl heat to come in.

Answer 3

Clothes help keep us warm in the winter by several means. Heat is represented by invisible photons (like light) traveling at the speed of light. The photons are given up by electrons orbiting atoms and molecules of skin, cloth and air as the atoms return to less energetic states. The photons can radiate from skin (as they do from a hot stove) as infrared waves. Clothes capture the photons and release them again to reflect back to the skin rather than to a cold room or cold outdoors. Skin can release photons to heat the air between the skin and clothes. Warm clothes prevent the loss of warm air by convection (circulation of warm air out and cold air in). Skin can lose photons to objects in direct contact which is why a good heat conductor like steel feels colder than a poor heat conductor like wood. Clothes prevents conduction of heat from skin because it is a relatively poor heat conductor. Therefore, clothes reflects heat back, prevents the flow of cooling air and prevents the loss of heat by contact with good heat conductors. It prevents or limits heat loss by radiation, convection or conduction. Air is a poor heat conductor and pockets of air between the clothes and skin and tiny air pockets in the weave of thick cloth reduce heat loss, especially if there is a strong cold wind blowing. Hope that helps a little.

Answer 4

Well, radiation will contribute to the heat transfer. black surface has emissivity of 1, which full absorb the heat from environment. Also, different materials have different thermal conductivity. this will allow conduction to take place.

Answer 5

don't wear balck when it is hot .i have no idea why but for some reason the sun is attracted to black