The CsP Project | movie | 2025 | Official Clip - video Dailymotion

The Group 4 CsP Science Project is a project used towards raising understanding of how insulation works in UK housing. | dG1fYWFVel9TcU9Ybkk

Transcript

00:00How does insulation work? The control of heat flow. Thermal insulation is designed

00:06to restrict and resist heat transfer via three mechanisms, conduction, convection

00:11and radiation. Conduction is how heat moves along or through a material by

00:17effectively being passed along from one molecule to another. It can take place in

00:22gases, liquids or solids. The ability of a material to conduct heat depends on the

00:27material. Using a low conductivity gas in insulation rather than just air further

00:32helps to reduce conduction. Convection only takes place in gases or liquids. It

00:38cannot happen in solids or in a vacuum. When the molecules that make up a gas or

00:43liquid heat up their density will change. Warmer air will become less dense and

00:48rise. Closed cell insulation with small cell sizes inhibits convection within the

00:53cell making them less prone to affecting neighboring cells. Radiation is the method

00:59of heat transfer across space from one body to another as energy. Radiation can

01:05occur in gases, liquids, solids and even in a vacuum. The rate of heat transfer through

01:11radiation is controlled by the difference in temperature of the surfaces, the

01:16distance between these surfaces and the emissivity of the surfaces. Emissivity is

01:22how shiny a surface is, in other words, its ability to reflect thermal radiation. An

01:28example would be a low emissivity foil facing on an insulation panel or board.

01:34To summarize, heat transfer can occur through conduction, convection and radiation.

01:39Thermal insulation is designed to restrict this, in turn reducing the amount of heat

01:44lost or gained.

01:52Thermal insulation is designed to restrict the surface of the surface of the surface of the