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How many peltier module i have to use for removing heat load of 250 watt? Answered

 i am using peltier modules  12706   ( vmax  15 v, Imax  6 A)               by checking it was running at   12 v  and 3.5 A

and   peltier module 12715  ( Vmax  15V ,  I max  15 A )           was  running at  12 v  and 5.5 A

I am using computer SMPS to run this peltiers so i can only get 12 v max
is there any way to increase voltage to 15 volt.

Discussions

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YogeshK33

3 years ago

i am using total 8 peltier module

4 module running at 12v at 5.5a == 264w

4 module running at 12v at 3,5 a == 164 w

total = 428 w considering cop 0.5 it will transfer 214 w i think so.

correct me if i am wrong..

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steveastroukYogeshK33

Answer 3 years ago

Where are you transferring the heat ? A 100W module, which might handle a 50 Deg delta T will only move 50W, with a delta T of 25 degrees. It can create a 50 deg delta T, with NO heat flow, or it can create a 100W heatflow with no deltaT

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verence

3 years ago

A peltier module doesn't remove heat, it transports it from one side to the other - while generating even more heat! You have to find a way to get rid of all this combined heat on the hot side of the module.

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Rahul - S

3 years ago

Hello Yogesh,

First of all 15V is Vmax. That doesn't mean that you need to supply 15V. 12V is also sufficient.

Now to calculate no. of modules-

Datasheet for 12706

http://www.thermonamic.com/TEC1-12706-English.PDF

Datasheet for 12715

http://www.thermonamic.com/TEC1-12715-English.PDF

These datasheets I found on google. To calculate heat transfer per module.

Consider Voltage applied, Current supplied, Temperature difference and using graphs in the datasheets, you can get watt per module.

[ 250 / watt heat removed per module ] will give you no. of modules required.

(In datasheet it is written Qc / W , that means Qc = heat flow and W = watt ie. unit) because i too confused first time.

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steveastrouk

3 years ago

Don't forget, you trade off power handling for temperature difference.