Flashlight Powered by Body Heat

Finalist for the Science in Action of the Google Science Fair 2013 , Ann Makosinsk (15 years) in recently manufactured two prototypes torch lamps powered by heat from the human body. Interested for some time to renewables but also to energy recovery, it was finally concentrated on the Peltier effect.

Flashlight Powered by Body Heat 1

The Peltier thermoelectric effect or is (in short) physical processes that produce energy when the different temperatures of the materials come into contact.

Combining four Peltier tiles, Ann Makosinsk therefore had the idea of ​​playing on the differences in temperature between the heat produced by the palm of the hand of an individual and the ambient air (collected by a heat sink) to power its torch-lights.Featuring an aluminum model and another PVC, it is necessary it to produce 5 degrees of differences between the two materials to generate up to 5.4 mW, or approximately the energy needed for an LED flashlights a range of 2 meters.

Flashlight Powered by Body Heat 2

The brilliant young Canadian also stipulates that:

The body emits 5.7 mW / cm2, but only 0.5 mW is needed to produce light with LED […] I have calculated that the average human being dissipated about 350,000 joules per hour, or 97 watts. The area average of the surface of human skin is 1.7 m2 or 17,000 cm 2, so that the heat dissipation is equal to 5.7 mW / cm 2 [(97 / 17,000) * 1000]. The useful surface of the palm is about 10 cm2. This means that we could have 57 mW. As the thermal efficiency of a Peltier tile is around 10%, that means I should be able to generate 5.7 mW directly from the palm of the hand.

Furthermore, only $ 26 of hardware would be needed for the manufacture of a flashlight like Garyflashlights.

My project aims to create a flashlight powered exclusively by the heat generated by the human hand. Using four Peltier plates and exploiting the thermal difference between the palm and the ambient air, I designed a lamp that lights without batteries or moving parts. My lamp is ergonomic, thermodynamics and requires only five degrees of temperature difference to work and produce up to 5.4 mW at 5 FC.

Flashlight Powered by Body Heat 3

Gallery

Hollow Flashlight is Powered Just by the Heat of Your Hand …

Hollow Flashlight is Powered Just by the Heat of Your Hand ...

Source: gajitz.com

Body Heat Powered Flashlight

Body Heat Powered Flashlight

Source: incrediblethings.com

Photo: The Hollow (Thermoelectric) Flashlight

Photo: The Hollow (Thermoelectric) Flashlight

Source: www.mnn.com

Human powered gadgets that never run short of energy …

Human powered gadgets that never run short of energy ...

Source: www.ecofriend.com

Teen Creates Flashlight Powered by the Heat of Your Hands …

Teen Creates Flashlight Powered by the Heat of Your Hands ...

Source: technabob.com

Human powered gadgets save on energy generation

Human powered gadgets save on energy generation

Source: www.greendiary.com

A Sustainable Flashlight Powered By Body Heat

A Sustainable Flashlight Powered By Body Heat

Source: designtaxi.com

Ann Makosinski: Canadian girl invents flashlight powered …

Ann Makosinski: Canadian girl invents flashlight powered ...

Source: www.dailymail.co.uk

Bright Kid Creates Heat-Powered Flashlight > ENGINEERING.com

Bright Kid Creates Heat-Powered Flashlight > ENGINEERING.com

Source: www.engineering.com

alternative energy – News Stories About alternative energy …

alternative energy – News Stories About alternative energy ...

Source: www.newser.com

How a young Saanich inventor is changing the world

How a young Saanich inventor is changing the world

Source: www.timescolonist.com

A pocket-sized flashlight powered by body heat

A pocket-sized flashlight powered by body heat

Source: www.designindaba.com

A pocket-sized flashlight powered by body heat

A pocket-sized flashlight powered by body heat

Source: www.designindaba.com

Body Heat Powered Flashlight

Body Heat Powered Flashlight

Source: cargocollective.com

Body Heat Powered Flashlight

Body Heat Powered Flashlight

Source: www.instructables.com

Ann Makosinski’s new invention: A body-heat powered …

Ann Makosinski's new invention: A body-heat powered ...

Source: www.cbc.ca

FlashLion Reviews: NITECORE EC4 Review (2×18650,1050Lm,XM-L2)

FlashLion Reviews: NITECORE EC4 Review (2x18650,1050Lm,XM-L2)

Source: flashlionreviews.blogspot.com

ابتکار جالب دختر 16 ساله کانادایی:چراغ قوه بدون نیاز به …

ابتکار جالب دختر 16 ساله کانادایی:چراغ قوه بدون نیاز به ...

Source: www.alamto.com

Shotgun Flashlight

Shotgun Flashlight

Source: hackedgadgets.com

Fenix Digital PD32 2016 LED Flashlight

Fenix Digital PD32 2016 LED Flashlight

Source: www.fenixtactical.com