Heat moves from one body to another by the following ways: radiation; conduction; and convection. Radiation is a electromagnetic wave motion that transfers heat energy. Radiation travels in a straight line from source to target body. The closer you are to an object the intensity of the radiation increases.
Heat is a form of energy, and when that heat comes into contact with matter, it makes the atoms and molecules move. When atoms and molecules move, they collide with other atoms and molecules and make them move, too. This movement transfers heat through matter.
Convection is the principle of warm rising and cold air falling. The transfer of energy by warming the air next to a warm object and then moving that warm air. As warm air rises it warms the air above and continues to rise. Some older furnaces used gravity to move heat throughout the house.
Air movement moves 98% of all water vapour in building cavities. Air will always move from a high pressure area to low pressure area by the easiest route available. Proper air sealing of a house will prevent this transfer of moisture into your cavities, voids and insulation.
The Dew Point is the temperature at which warm moist air will actually condense into water. In Ontario this normally occurs in the winter when warm moist air travels through your walls to the cold outside. When the warm moist air reaches the cold air, the Dew Point, it condenses into water, which will happen somewhere in your wall or ceiling insulation.
Installing a vapour barrier will prevent the movement of moisture when the warm air is travelling through your walls and ceilings to the exterior. Remember heat goes to cold, the vapour barrier ensures that the moisture does not go with it. The moist warm air will produce water at the Dew Point creating all kinds of problems in your attic or walls.
Insulation provides resistance to heat flow. The more heat-flow resistance the insulation provides, the lower the heating and cooling costs. Heat flows naturally from a warmer space to a cooler space. In the cold winter, this heat flow moves directly from all heated living spaces to adjacent unheated spaces, such as attics, garages, basements, under-floor crawlspaces, and even to the outdoors. Heat flow can also move indirectly through interior ceilings, walls and floors - wherever there is a difference in temperature.
Some foams are filled with special gases that provide additional resistance to heat flow. Using a Thermal Imaging camera during a home inspection will allow your professional home inspector to locate any missing vapour barriers or insulation. Most home inspectors offer this service for FREE.
Heat is a form of energy, and when that heat comes into contact with matter, it makes the atoms and molecules move. When atoms and molecules move, they collide with other atoms and molecules and make them move, too. This movement transfers heat through matter.
Convection is the principle of warm rising and cold air falling. The transfer of energy by warming the air next to a warm object and then moving that warm air. As warm air rises it warms the air above and continues to rise. Some older furnaces used gravity to move heat throughout the house.
Air movement moves 98% of all water vapour in building cavities. Air will always move from a high pressure area to low pressure area by the easiest route available. Proper air sealing of a house will prevent this transfer of moisture into your cavities, voids and insulation.
The Dew Point is the temperature at which warm moist air will actually condense into water. In Ontario this normally occurs in the winter when warm moist air travels through your walls to the cold outside. When the warm moist air reaches the cold air, the Dew Point, it condenses into water, which will happen somewhere in your wall or ceiling insulation.
Installing a vapour barrier will prevent the movement of moisture when the warm air is travelling through your walls and ceilings to the exterior. Remember heat goes to cold, the vapour barrier ensures that the moisture does not go with it. The moist warm air will produce water at the Dew Point creating all kinds of problems in your attic or walls.
Insulation provides resistance to heat flow. The more heat-flow resistance the insulation provides, the lower the heating and cooling costs. Heat flows naturally from a warmer space to a cooler space. In the cold winter, this heat flow moves directly from all heated living spaces to adjacent unheated spaces, such as attics, garages, basements, under-floor crawlspaces, and even to the outdoors. Heat flow can also move indirectly through interior ceilings, walls and floors - wherever there is a difference in temperature.
Some foams are filled with special gases that provide additional resistance to heat flow. Using a Thermal Imaging camera during a home inspection will allow your professional home inspector to locate any missing vapour barriers or insulation. Most home inspectors offer this service for FREE.
About the Author:
Free Thermal Imaging by Barrie Property Inspections as part of home inspection service. As a Certified Building Code Official I always recommend you check a Home Inspector's Qualifications.
I am not a science student and i was not know that you have described first paragraph about heat moves. :)
ReplyDeleteI know about insulation it's really a crucial thing for homes, it can keeps our homes warm in winters and cool in summer, it's the perfect time for insulating our homes for extracting external heat from the house.
insulation machines