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  • Author Author: dwinhold
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Safe and Sound – Winter Survival Suit - Post #6 (Power requirements)

dwinhold

For this weeks update I will be discussing the power requirements to heat the suit. I have finished sewing in the carbon fiber heating tape into the suit. I used 750mm lengths of tape to keep my power consumption consistent (It also worked out that way). For each leg I used 2 lengths, for the arms I used 1 length each and for the torso I used 4 lengths. If I would have thought this out when I ordered the carbon fiber I would have ordered more, I bought just enough for my suit but the wife and kids are now wanting more apparel made with the heating ability; I guess I will be ordering more shortly.

 

So, with 750mm (29 ½”) carbon fiber tape, using 7.4v @ .53 amps uses 3.56 Watts of power. This will give me a temperature of 42.2c (107.96F). This temperature isn’t to hot (It may even be to low) but this can
be adjusted by the power supply.

 

Note:

Heating pads – Low: 43c (110F) Med: 59c (138F) High: 71c (160F)

 

My power supply is made up of 10 – 18650 Batteries. Each battery is 3.7V 2600mAH, this will allow 50% of the suit to be heated at the same time. With my experience in Search and Rescue and outdoor survival this
should be adequate to keep you warm and safe. If for unforeseen reasons all elements of the suit need to be on all elements would reach a temperature of 33.2c (91.76F)

 

Power supply layout:

image

 

 

I am still waiting for my temperature sensors to arrive, hopefully this week so I can give a more in depth report next week.

 

Dale Winhold

Parents Comment
  • in reply to DAB

    Hi DAB,

     

    When I get to the testing of the suit I will find out!! I plan on making sure this will be corrected if it is an issue. I will have to have the volts to the carbon fiber increase in order to up the temperature. This will be part of the final steps of this project.

     

    Thank you for the comment

     

    Dale W

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