Heat Transfer

Everybody knows water flows down the hill. If you want to go against the flow and move water up hill, you will have to \”do some work\” to achieve it. If you don\’t want the water to flow down the hill, again you will have to \”do some work\” to prevent it, like constructing a dam. \”Doing some work\” is like paying a gas bill because a task like this causes discomfort.

The initial thing that you will have to learn is that the heat flows from a hot section to cold section naturally.

Heat moves around in 3 different ways

The first way heat moves is through radiation. Everybody knows if we expose ourselves directly to solar radiation, we will feel the heat from the sun flowing right to us. The sun is extremely hot, so the heat flows straight to earth. When you get sunburnt, this means you are the result of solar radiation.

The second method of movement is conduction. This is when heat moves through a solid object.The handle of a frying pan which is made from iron can get very hot by conduction. Most of us insulate our house walls and our attic, so the process of conduction through the structure of the building slows down.

The last method for heat movement is convection. Convention is when heat moves through either water or air which has been heated.

An instance of Convection that most of the people use in order to heat the houses is a kind of forced furnace of air. This furnace heats up the air that is actually pushed all throughout the house with the help of a blower in order to heat up the home place. This warm air movement is a fine example of the Convection method. The heat is simply carried from the furnace to the entire home through the air.

The convection can also work versus us. For instance, the warm air flows up to the chimney which conveys heat out of your house in the winter season. In the summers we use more heat than actually required in our homes.

In the summer, we have more heat than we want in our living spaces. We force heat to move the wrong way by taking heat out of our houses and putting it out in the hotter outdoors. This takes a large input of energy to accomplish because we are \”doing some work\” against the normal flow. It is like pushing water up hill, it takes a lot of energy.

Energy saving items

Energy saving items

When I use the word shielding, I mean radiant barriers and shade trees, basically like a type of paint or aluminium foil. This type of shielding can either reflect radiant energy back to where it came from or block the sun; this stops the sun\’s rays heating our homes which we live in. Windows which are designed and constructed as solar screens work this way. Radiant barrier materials which are reflective perform like a mirror by deflecting or reflecting radiant heat away from your living space.

In the winter we want solar radiation to hit our homes because it\’s cold outside. For a more natural way of seasonal shading you can plant trees which will give summer shade.

In the winter we want solar radiation to hit our homes because it\’s cold outside. For a natural way of seasonal shading you can plant trees that give summer shade.

Insulation materials have a number r rating on them; this indicates how well they perform when resisting the conductive flow of heat. The higher the R, the more it prevents the flow of heat. If you want more information on this subject read my article titles…

We like convective heat transfer when warm air moves from the furnace through the house. We also like it when warm air moves from the house to the cold coil of the air conditioner. We do not like convection when it helps heat escape up the chimney, around windows, or under doors

When you save energy, it means you have a higher efficiency to move heat only to the place we want it to go. This also means doing the best possible job of blocking or slowing down the movement of heat where we don\’t want it to move to.

Improving your home\’s weather sealing, radiation shielding and insulation are some of the very best things you can do to reduce your energy bills.

Want to find out more about heat transfer visit heat transfer oil suppliers, then visit Paul Smith\’s site on how to choose the best heat transfer fluid suppliers for your needs.