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How does loft insulation work?
Generally, the heat in your house rises. This can mean that a lot of heat is lost through the roof. If you put insulation in your loft, the insulation is a poor conductor of heat so the heat stays below the loft and your loft is cold. Then less heat gets to the roof and so less heat is lost.
Can paper be an insulator?
Paper can be a good insulator if it is used correctly. Insulation work by creating tiny pockets of air which does not flow, thereby preventing loss of heat through convection currents. Therefore, any material which creates tiny pockets of stationary air (such as fur) can be an insulating material. Also, materials like styrofoam prevent movement of heat from outside to inside simply by being a poor conducting material, and so they also act as insulating material.
How does a thermal mug reduce energy transfer?
It reduces energy transfer by preventing two different types heat loss: - Radiant heat loss: The lid prevents the kinetic energy (heat) of the liquid from being passed to the molecules in the air. - Conductive heat loss: The sides and bottom of the mug are insulated. This is done in two ways; either there is a pocket of air (sometimes even a vacuum) between the inside layer and the outside layer of the mug, or there is a foam/sponge like insulation between these layers. Both methods work on the same principle. Because the layer of air/insulation is *less dense* than just the single wall of a normal mug, the molecules are *farther apart*, so it is "harder" for the heat to be transfered. Think about a cake that has just been pulled out of the oven. You can touch the cake for a brief second without being burned, but you have to use oven mitts to touch the pan, or you will be burned instantly. This is because the cake less dense than the pan, and therefore doesn't transfer the heat to the same degree.
What is the heat loss of an engine that has an input of heat energy of 10750 joules and does 2420 joules of work?
2420 / 10750 = .225 or a Coefficient of Performance (COP) = 22.5
Why is the output of a machine never equal to the work input?
Bcoz of the loss of energy in form of heat , sound etc.
How does different types of insulation work?
It prevents heat loss by trapping in the heat.
What is the best material for work gloves meant for handling burning metal?
The best material for work gloves handling burning metal are typically made from leather and Kevlar with an insulation filling to prevent heat transfer through conduction. Insulation material and insulation grams will largely determine the duration of time a glove will resist heat.
How does loft insulation work?
Generally, the heat in your house rises. This can mean that a lot of heat is lost through the roof. If you put insulation in your loft, the insulation is a poor conductor of heat so the heat stays below the loft and your loft is cold. Then less heat gets to the roof and so less heat is lost.
Why isn't the hair follicle controlled by skeletal muscle?
Because cerebral cortex has too many work already. If we have to think about contolling the hair may be we can be only the porcupine instead of two legs mongky. ^^
How do you remove dried spray foam insulation eurethane from a painted metal door?
heat the other side of the door if you can & scrap off - it does work, we removed the insulation from aluminum sheeting that way
Can paper be an insulator?
Paper can be a good insulator if it is used correctly. Insulation work by creating tiny pockets of air which does not flow, thereby preventing loss of heat through convection currents. Therefore, any material which creates tiny pockets of stationary air (such as fur) can be an insulating material. Also, materials like styrofoam prevent movement of heat from outside to inside simply by being a poor conducting material, and so they also act as insulating material.
Why is it important to use the least obstructive soluation first?
Less work and to prevent loss of data.
Why do you get icicle's from the roof?
most of the time it is caused by heat escaping from your attic. that heat melts the snow and ice and as it runs down the roof it refreezes when it reaches the bottom. some things you can do to prevent that from happening is to have insulation blown into your attic and/or have your roof vents looked at to see if they are working for you or against you. other times people use that roof heat cable and it does work well if it is done right.
How does water pipe insulation work?
pipe insulation have very low value of thermal conductivity. this is because of the air pockets or pores present in insulation or bad heat conducting elements such as glass...Most decent pipe insulation works by wrapping the pipe inside a mass of tiny air bubbles. ---------------------------------------------------------------------- Air is the insulation in almost all the available insulation's. It is important that the bubbles are very tiny as bubbles over 16mm will start a convection current that will transfer the heat across the cell. The problem with insulation is, it only slows the transfer of heat. Given time all the heat in a pipe will transfer through the insulation and the pipe will freeze. It is important that all exposed pipes and any pipes that are below freezing for some time are fitted with electrical ribbon heating to maintain their temperature above freezing.
Can hearing loss be claimed on workemnen comp?
Possibly, if the loss is work-related and you were not advised methods to prevent damage or furnished with equipment to protect your hearing.
What insulates against heat loss?
Thermal insulation hinders the loss of heat energy. Clothing acts as thermal insulation for human bodies. In buildings, these materials are often used as thermal insulation: plant straw, wood fiber, cellulose, polystyrene, vermiculite, urethane foam, perlite, recycled cotton denim.
Why do saw dust or blanket can prevent ice to melt slower?
The sawdust acts as insulation. But styrofoam or a Dewar flask will work much better.
