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A material that reduces the flow of heat by conduction convection and radiation?
Wiki User
∙ 13y ago
We call material that acts in that way a thermal insulator. Sometimes we shorten it to just insulation, but we need to be clear that we're talking about thermal energy and not, say, electrical energy.
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoA material that restricts the transfer of conductive heat is an heat insulator.
A material that restricts radiant heat transfer is called a radiant barrier. Restriction of convective heat is achieved using baffles or dampering.
Wiki User
∙ 9y agoHydration is used to reduce the heat in a body. In a building to reduce heat insulation is used.
Wiki User
∙ 11y agoUsually, the term is "insulator." Heat flows easily through objects called conductors. An insulator can act as a barrier to that. Common insulating substances are air, water, glass.
Wiki User
∙ 9y agoAn insulator is a material that stops or inhibits the transfer of heat. Examples include: air, glass, rubber and word.
Wiki User
∙ 10y agoWiki User
∙ 13y agoThermal energy needs a medium to travel through. So if you were to separate to objects by a vacuum and heat one side none of that heat would reach the other. An example of this is a thermos.
Wiki User
∙ 13y agoThey are both forms of energy, not matter. Both require matter to act upon or flow through.
Wiki User
∙ 12y agoWiki User
∙ 13y agoAn insulator
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What is aconvection current?
A convection current is a natural flow or circulation of fluid due to a variation in its density due to temperature differences. As a fluid's temperature increases, its density reduces, and the fluid rises to be replaced by fluid at a lower temperature. Convection, together with conduction and radiation, is a method of heat transfer.
When the length of air gap is increased in an induction motor what will also increase?
Power factor reduces overload capacity increased noise reduces
What is the basic function of insulation?
Heat insulation reduces the rate of heat flow. Sound insulation reduces the amplitude of the sound energy transmitted through a cavity.
How do you reduces ac no lode current in transformers?
Disconnect the primary source.
A countermeasure is anything that effectively reduces an adversary and ability to exploit our vulnerabilities?
True
A material that reduces the flow of heat by conduction convection and radiation is?
A thermal isolator.
Does loft insulation reduce heat loss by conduction convection or radiation?
Insulation reduces heat loss by replacing air space with a less conductive material (insulation). Therefore the answer is conduction.
How does a vacuum bottle keep food hot or cold?
The main idea is to reduce the heat transfer out of the vacuum bottle, or into it. A vacuum greatly reduces the transfer of heat by conduction and convection, while the mirror reduces heat transfer by radiation.
Why you create vacuum in thermos flask?
This reduces heat transport through conduction and convection.
How does a thermos flask reduce heat loss by convection?
A vacuum between two glass sheets will greatly reduce heat loss through convection, and also through conduction. The fact that the glass is coated (to convert it to a mirror) also reduces the loss by radiation.
What is aconvection current?
A convection current is a natural flow or circulation of fluid due to a variation in its density due to temperature differences. As a fluid's temperature increases, its density reduces, and the fluid rises to be replaced by fluid at a lower temperature. Convection, together with conduction and radiation, is a method of heat transfer.
Which form of heat transfer is reduced by the use of vacuum inside a vacuum flask?
The vacuum reduces both conduction and convection.
What do you call a material that reduces the flow of heat by conductionconvection and radiation?
a thermal isolator
How cavity wall insulation helps to reduce heat loss?
A major part of the heat transfer through a cavity wall lacking insulation is convection - and to a lesser degree radiation. When insulation is placed in the cavity between the walls it significantly reduces both convection (air doesn't move well through insulation like it does in empty space) and radition (the walls can't "see" each other through the insulation). For the insulation to be effective, the thermal conductivity of the material must be low enough that conduction through the insulation is much less than was present with convection.
Why thermos flask does not let the heat escape?
It is especially designed to reduce heat transfer through conduction, convection, and radiation. A vacuum between two layers reduces the heat transfer through conduction and convection; the fact that the surfaces are mirror-coated also reduces losses through radiation.
How does a thermos bottle work?
It uses as vacuum to insulate the inside from the outside. The vacuum reduces the different ways heat can be dissipated; mainly conduction and convection. Very importantly, a Thermos bottle, scientifically called a "Dewar's flask," incorporates a radiant barrier that directs radiant heat back into the hot liquid in the bottle. You can usually see the radiant barrier when the flask incorporates a glass liner, the barrier is the shiny material across the vacuum from the glass. The three ways heat can move are conduction, (through a solid), convection, (through a gas or liquid), and radiation, (through a gas or vacuum). The Dewar's flask addresses all three of the means of heat transfer, that is why it is so efficient. that is true trust me
Why is the layer of fleece good at reducing the transfer of heat from a skiers body?
a fleece traps a layer of air which is a insulator of heat. it reduces heat loss via conduction and convection.
