The house system is a combination of mechanical and physical components. Changing one component in the house can have dramatic and unexpected effects as the effects are propagated throughout the house system.
Conduction is probably the best known and the easiest to understand mode of heat transfer. It occurs when a material separates an area of high temperature from an area of low temperature, such as a wall separating a warm interior from a cold exterior. Glass, concrete and all metals are good conductors.
Convection is the second mode of heat transfer we will consider. Heat transfer by convection occurs as a result of movement of liquid or gas over a surface. Wind blowing against a house is an example of a gas moving over a surface.
Codes that control trades practices were, for the most part, written when this potential was essentially insignificant. Consequently, individual tradesmen performing code-compliant work can create potentially harmful situations without realizing they have done so. Heating codes commonly ensure sufficient combustion air by requiring so many cubic feet of space per BTU/hr input of the appliance. These codes were established when basements were commonly rubble stone or granite slabs. Concrete is inherently tighter, but some building codes haven't changed to reflect that.
Recessed lights are very popular, but they are usually the source of considerable heat loss or gain in a ceiling. The recessed lights when scanned with an infrared camera will show a lot of heat loss. The solution is to buy lights that allow you to cover them with insulation thus preventing heat loss.
Proper installation will not leave any gaps in the insulation. Gaps create cold surfaces which increase the potential for moisture accumulation in wood components. Having your home scanned with a thermal imaging camera will find any hidden areas of missing insulation.
One solution is a high-performance window whose energy performance properties are rated by the NFRC, the National Fenestration Rating Council. The NFRC ratings provide energy performance information on factors such as glazing type and gas fill. This will help in selecting the right windows for a particular kind of house in a given climate.
Heating efficiency ratings are simply the percentage of consumed energy that goes up the chimney. As efficiency increases, less heat and air go up the chimney. As we increase heating appliance efficiency, we reduce draft, which in turn moves less air through the building, reducing its drying capability. The final step in efficiency improvement is a sealed combustion unit, which gets its combustion air from the outside and consequently does nothing to dry the building at all.
Conduction is probably the best known and the easiest to understand mode of heat transfer. It occurs when a material separates an area of high temperature from an area of low temperature, such as a wall separating a warm interior from a cold exterior. Glass, concrete and all metals are good conductors.
Convection is the second mode of heat transfer we will consider. Heat transfer by convection occurs as a result of movement of liquid or gas over a surface. Wind blowing against a house is an example of a gas moving over a surface.
Codes that control trades practices were, for the most part, written when this potential was essentially insignificant. Consequently, individual tradesmen performing code-compliant work can create potentially harmful situations without realizing they have done so. Heating codes commonly ensure sufficient combustion air by requiring so many cubic feet of space per BTU/hr input of the appliance. These codes were established when basements were commonly rubble stone or granite slabs. Concrete is inherently tighter, but some building codes haven't changed to reflect that.
Recessed lights are very popular, but they are usually the source of considerable heat loss or gain in a ceiling. The recessed lights when scanned with an infrared camera will show a lot of heat loss. The solution is to buy lights that allow you to cover them with insulation thus preventing heat loss.
Proper installation will not leave any gaps in the insulation. Gaps create cold surfaces which increase the potential for moisture accumulation in wood components. Having your home scanned with a thermal imaging camera will find any hidden areas of missing insulation.
One solution is a high-performance window whose energy performance properties are rated by the NFRC, the National Fenestration Rating Council. The NFRC ratings provide energy performance information on factors such as glazing type and gas fill. This will help in selecting the right windows for a particular kind of house in a given climate.
Heating efficiency ratings are simply the percentage of consumed energy that goes up the chimney. As efficiency increases, less heat and air go up the chimney. As we increase heating appliance efficiency, we reduce draft, which in turn moves less air through the building, reducing its drying capability. The final step in efficiency improvement is a sealed combustion unit, which gets its combustion air from the outside and consequently does nothing to dry the building at all.
About the Author:
Learn about WETT Inspection for Barrie. Stop by the Barrie Home Inspector's site where you can find out all about Deck Construction for Barrie.
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