Peltier cooler- thermodynamics

Click For Summary
SUMMARY

The discussion centers on the use of a TEC1-12706 Peltier cooler for a project aimed at creating a cooling device for the wrist, referred to as "wristify." Operating at 9V and 6.4A, with a temperature differential (ΔT) of 45ºC, the cooler's thermal power transfer rate is between 50-57 watts. The user seeks to determine the temperature drop of an object in contact with the cold side of the Peltier cooler over a period of 10 seconds, while maintaining the hot side at 27ºC. Key factors influencing the temperature drop include the material and mass of the object being cooled.

PREREQUISITES
  • Understanding of Peltier cooler specifications, specifically TEC1-12706.
  • Knowledge of thermal dynamics, particularly transient heat transfer.
  • Familiarity with thermal power transfer rates in watts.
  • Basic principles of heat exchange between materials.
NEXT STEPS
  • Calculate the temperature drop using the Peltier thermal power transfer rate.
  • Research the specific heat capacity of the material being cooled.
  • Explore transient heat transfer equations for more accurate modeling.
  • Investigate alternative Peltier modules for improved efficiency.
USEFUL FOR

This discussion is beneficial for hobbyists, engineers, and designers interested in thermoelectric cooling applications, particularly those developing wearable cooling devices or exploring Peltier technology.

MadaraUchiha
Messages
8
Reaction score
0
Im working on a project for fun using a peltier cooler. A tec1-12706.
If i am operating the peltier at 9v, 6.4 amps of current and dt =45ºC (from datasheet) and bring its cold side in contact with a body at 33ºC for 10 seconds.
Keeping hot side at 27ºC(cold side =-18) using sink, what will be the fall in temperature of the object in contact with cold side in this 10 seconds?
Pretty sure i asked the question wrong myself because I am a bit confused too so any help would be appreciated.
 
Science news on Phys.org
This will be difficult because it is a transient situation, but for a start, you will need:
-Material and mass of the object (and perhaps other info).
-Peltier thermal power transfer rate in watts (should be on data sheet).
 
Hey thanks for the reply,

Actually I am trying to create my own wristify so the material to cool the the wrist (it says that 0.4ºC drop is temperature can somewhat fool the body into thinking that its in a cold environment).

Ive read that skin temperature is about 33ºC. Assumming that each time the peltier starts, the wrist is back at 33ºC.
How much drop will peltier produce in 10 seconds of running.

Peltier thermal power transfer rate =50-57 watts.
 

Similar threads

Undergrad Can adding a second peltier cooler help lower temperatures even further?
  • · Replies 4 ·
Replies
4
Views
1K
Appliances Peltier based mini air conditioner not working
  • · Replies 21 ·
Replies
21
Views
8K
Undergrad A paradox about energy balance and steady state
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Expected visible vapor time of boiling water at STP without any heat?
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad Thermodynamics of Ideal Counterflow Heat Exchanger
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Required kW for cooling and dehumidification + reheating
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Heat Radiation in Thermodynamics
  • · Replies 17 ·
Replies
17
Views
3K
Undergrad A question about dehumidifiers and condensation
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Understanding Heat Engines: Exploring the Second Law of Thermodynamics
  • · Replies 4 ·
Replies
4
Views
2K
What heat sink is best for a peltier cooling device?
  • · Replies 12 ·
Replies
12
Views
10K