Why Did Plywood Surface Temperature Initially Lag in Heating Experiment?

  • Thread starter Thread starter TSN79
  • Start date Start date
  • Tags Tags
    increase
Click For Summary
SUMMARY

The discussion centers on an experiment measuring the temperature response of plywood wall surfaces in a heated room. Initially, the plywood surface temperature lagged behind the air temperature, showing minimal increase before rapidly rising by ten degrees. This phenomenon did not recur in a subsequent experiment, where the surface temperature rose consistently with the air temperature. Possible explanations include instrumentation errors or heat transfer dynamics within the wall's construction, such as heating ducts affecting the surface temperature response.

PREREQUISITES
  • Understanding of thermal dynamics and heat transfer principles
  • Familiarity with temperature logging instrumentation
  • Knowledge of plywood material properties
  • Basic concepts of room insulation and construction materials
NEXT STEPS
  • Research thermal conductivity of plywood and its impact on temperature response
  • Learn about temperature logging techniques and instrumentation accuracy
  • Investigate the effects of wall construction on heat transfer, including insulation materials
  • Explore the role of heating ducts and airflow in temperature distribution within a room
USEFUL FOR

This discussion is beneficial for experimental physicists, materials scientists, and anyone involved in building construction or HVAC system design, particularly those interested in thermal dynamics and material behavior in controlled environments.

TSN79
Messages
422
Reaction score
0
In an experiment I heated a room and logged the temp change as it went up. One of the walls in the room is made of plywood. I also logged the temp on this surface (on the heated side). When I looked at the graph after the experiment I noticed that as the air temp of the room went up, the surface temp of the plywood was reluctant to follow the change. It only increased slightly for a while before suddenly skyrocketing about ten degrees within a few minutes.

When I did the whole thing again the next day, the same thing didn't happen. Now the surface temp rose evenly with the room temp.

I'm confused as to this "reluctantness" in the first experiment. Any explanations?
 
Engineering news on Phys.org
There's got to be some reason for it. Is this room in a controlled environment or is it in a house somewhere? It could be an instrumentation error. How did you instrument the wall surface? A sudden increase in a material like plywood is pretty unnatural in a normal setting unless there is a fire or something along those lines.

Also, I would look for heating ducts, etc...running through the wall. Anything to transfer heat away from the surface.

Can you go into more detail about the wall's construction?
 

Similar threads

Undergrad Heat diffusion through grain mash to reach equilibrium
  • · Replies 3 ·
Replies
3
Views
2K
Describe the relationship between temperature and specific volume?
  • · Replies 11 ·
Replies
11
Views
4K
Why Did the Temperature Rise in a Sealed Automotive Cooling System?
  • · Replies 18 ·
Replies
18
Views
3K
Why did my water contract when exposed to rapid temperature change?
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Resistance of Platinum decreases with an increase in temperature ?
  • · Replies 2 ·
Replies
2
Views
8K
Effect of temperature on surface tension
  • · Replies 2 ·
Replies
2
Views
2K
Storing chemicals on my balcony (storing in changing temps)
  • · Replies 14 ·
Replies
14
Views
3K
Undergrad Effects on Engine Overheating and Pressure Dynamics
  • · Replies 4 ·
Replies
4
Views
3K
Experiment - how temperature changes along a tube, using heaters
  • · Replies 14 ·
Replies
14
Views
2K
What is meant by 'Earth's surface temperature'?
  • · Replies 53 ·
2
Replies
53
Views
14K