Radiant barrier in the context of "Heat transfer"

A yurt (from the Turkic languages) or ger (Mongolian) is a portable, round tent covered and insulated with skins or felt and traditionally used as a dwelling by several distinct nomadic groups in the steppes and mountains of Inner Asia. The structure consists of a flexible angled assembly or latticework of wood or bamboo for walls, a door frame, ribs (poles, rafters), and a wheel (crown, compression ring) possibly steam-bent as a roof. The roof structure is sometimes self-supporting, but large yurts may have interior posts or columns supporting the crown. The top of the wall of self-supporting yurts is prevented from spreading by means of a tension band which opposes the force of the roof ribs. Yurts take between 30 minutes and three hours to set up or take down, and are generally used by between five and 15 people. Nomadic farming with yurts as housing has been the primary way of life in Central Asia, particularly Mongolia, for thousands of years.

Modern yurts may be permanently built on a wooden or concrete platform; they may use modern materials such as metal framing, plastics, plexiglass dome, or radiant insulation.

A space blanket is an especially low-weight, low-bulk blanket made of heat-reflective thin plastic sheeting. They are used on the exterior surfaces of spacecraft for thermal control, as well as by people. Their design reduces the heat loss in a person's body, which would otherwise occur quickly due to thermal radiation, water evaporation, or convection. Their low weight and compact size before unfurling make them ideal when space or weight are at a premium. They may be included in first aid kits and with camping equipment. Lost campers and hikers have an additional possible benefit: the shiny surface flashes in the sun, allowing its use as an improvised distress beacon for searchers and as a method of signalling over long distances to other people.

Building insulation materials are the building materials that form the thermal envelope of a building or otherwise reduce heat transfer.

Insulation may be categorized by its composition (natural or synthetic materials), form (batts, blankets, loose-fill, spray foam, and panels), structural contribution (insulating concrete forms, structured panels, and straw bales), functional mode (conductive, radiative, convective), resistance to heat transfer, environmental impacts, and more. Sometimes a thermally reflective surface called a radiant barrier is added to a material to reduce the transfer of heat through radiation as well as conduction. The choice of which material or combination of materials is used depends on a wide variety of factors. Some insulation materials have health risks, some so significant the materials are no longer allowed to be used but remain in use in some older buildings such as asbestos fibers and urea.