Conductive Heat Loss: Lower by 4.55% at 70F to 68F

In summary, by lowering the inside temperature from 70°F to 68°F, the heat loss would be reduced by approximately 4.55%.
  • #1
TPU
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Homework Statement



If only conductive heat loss was significant for a house, then by what percentage would you lower the heat loss if the temperature was reduced inside from 70°F to 68°F, when the outside temperature is 26°F? (Hint: Try using a ratio.)

Homework Equations



N/A, use a ratio

The Attempt at a Solution



This question was given with no explanation and no examples are present anywhere. I don't know what kind of equation to use since no area or R values are given. I did 70-26 and 68-26 then found the percentage between them which came out to 4.55%. Is this correct?
 
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  • #2
TPU said:
I did 70-26 and 68-26 then found the percentage between them which came out to 4.55%. Is this correct?
Yes.
The conduction of heat through a wall is proportional to the temperature difference across it (70-26 versus 68-26).
 

Related to Conductive Heat Loss: Lower by 4.55% at 70F to 68F

1. What is conductive heat loss?

Conductive heat loss is the transfer of heat between two objects that are in direct contact with each other. It occurs when there is a temperature difference between the two objects, causing heat to flow from the warmer object to the cooler object.

2. How does conductive heat loss affect temperature?

Conductive heat loss can cause a decrease in temperature, as heat is transferred from the warmer object to the cooler object. In the case of "Lower by 4.55% at 70F to 68F," the temperature is lowered by 4.55% due to the conductive heat loss.

3. What is the significance of the 4.55% decrease in conductive heat loss?

The 4.55% decrease in conductive heat loss is significant because it shows that the transfer of heat between the two objects has been reduced. This can result in energy savings and a more stable temperature environment.

4. How does temperature affect conductive heat loss?

The greater the temperature difference between the two objects, the greater the conductive heat loss will be. In the case of "Lower by 4.55% at 70F to 68F," the temperature difference of 2 degrees Fahrenheit results in a 4.55% decrease in conductive heat loss.

5. What can cause a decrease in conductive heat loss?

A decrease in conductive heat loss can be caused by various factors such as insulation, materials with low thermal conductivity, and reducing the temperature difference between the two objects. In the case of "Lower by 4.55% at 70F to 68F," the decrease is due to the reduction in temperature difference.

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