Temperature Change in Room: +22 to 15 Degrees C

AI Thread Summary
The discussion revolves around calculating the time constant for a room's temperature drop from +22 degrees C to 15 degrees C, with an outdoor temperature of -5 degrees C. The time constant is defined as the time required for the temperature to decrease to approximately 36.8% of its initial value. Participants seek clarification on how to approach this calculation, indicating a lack of understanding of the concept. The conversation highlights the need for more information on the factors affecting the room's temperature change. Understanding the time constant is crucial for evaluating thermal dynamics in this scenario.
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A room has temp at +22 degrees C, and after 8 hours it has fallen to 15. What is the rooms "time constant" when the outdoor temp is -5 C? I have no idea what is beeing asked about here, could someone help me...?
 
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The time constant of a system is the time taken for the relevant quantity (in this case, the temperature) to decrease to 1/e (about 36.8%) of its initial value.

- Warren
 

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