heat to electricity converter

[prettyNpink07]

sino pong my alam na circuit for heat-electricity converter? balak po sna naming iconvert ung heat na nilalabas ng mga electronic devices (i.e laptop) para maipang charge sa ibang devices gaya ng celfon at psp... help naman po.. tnx!

[Ate Shey]

sino pong my alam na circuit for heat-electricity converter? balak po sna naming iconvert ung heat na nilalabas ng mga electronic devices (i.e laptop) para maipang charge sa ibang devices gaya ng celfon at psp... help naman po.. tnx!

it is called "Thermocouple" .. it is not a good projects since the thermocouple is a very inefficient device.. you need lots of heat to generate a very small voltage..

[prettyNpink07]

wala pong ibang option?

[Ate Shey]

wala pong ibang option?

wala na akong ibang alam na way.. your project is not so good from the practical point of view..

[~JahBoy~]

you u mean u wanna convert heat energy to an electrical energy to generate a voltage/power source for your electronic devices...if thats the case, tama si sis electra, yung thermocouple lang talaga magagamit mo as an interface to convert heat to electrical energy.. meron pa sigurong iba pero lalong mahihirapan ka, at mejo complex ang design.. and bout thermocouple, have tried it before, grabe ang hirap i-calibrate at ipaproduce ng exact desired voltage from applied heat.. yung supply mo na galing sa thermocouple ay napaka unstable in other words

y dont u try solar energy mas effective pa yun...hehe suggest lang po

[prettyNpink07]

yun po kc ung naasyn samen... hndi po ba pwedeng istore n lng ung mapproduce na voltage ng thermocouple?

[~JahBoy~]

masyado kasi maliit magegenerate ng thermocouple relative to the 'sensed' heat... if thats the case it CANT be used to power up your devices like yung sabi mong charging a battery.. well you can always boost the thermocouple's output voltage thru amplifiers but it will defeat the purpose na of making a power supply to your device thru heat..hehe..yung amplifier pa nga, nagrerequire na nang power..hehe pero mahirap talaga ito bro..naisipan ko din noon ito as a research yung anything related to energy conversion (chemical to electrical, heat to electrical, etc) pero mahirap talaga for my level, not now..hehe

[~JahBoy~]

yun po kc ung naasyn samen... hndi po ba pwedeng istore n lng ung mapproduce na voltage ng thermocouple?

nirerequire kayo nito ng prof/adviser nyo?? sang skul po?? grabe yung task na binigay sayu ha..hehe..di kaya madali at simple research toh

[piona]

Sinukat ko ngayon iha, nasa 40 degrees centigrado lang ang exhaust at 42 degrees centigrado lang ang charger ng laptop ko.....ambient ko ngayon 25 degrees.

coversion ng thermocouple nasa 0.7mV lang.

[prettyNpink07]

masyado kasi maliit magegenerate ng thermocouple relative to the 'sensed' heat... if thats the case it CANT be used to power up your devices like yung sabi mong charging a battery.. well you can always boost the thermocouple's output voltage thru amplifiers but it will defeat the purpose na of making a power supply to your device thru heat..hehe..yung amplifier pa nga, nagrerequire na nang power..hehe pero mahirap talaga ito bro..naisipan ko din noon ito as a research yung anything related to energy conversion (chemical to electrical, heat to electrical, etc) pero mahirap talaga for my level, not now..hehe

un nga din ung naicp q qng gagamitan namin ng amplifier, e magcconsume na din un ng power..

[~JahBoy~]

^hehe kung gagamitan nyo nang ampli, e wala nang halaga yung proj. nyo as a heat to electrical converter, kasi yung ampli pa nga, ginagamitan mo na nang electrical energy..

[prettyNpink07]

Sinukat ko ngayon iha, nasa 40 degrees centigrado lang ang exhaust at 42 degrees centigrado lang ang charger ng laptop ko.....ambient ko ngayon 25 degrees.

coversion ng thermocouple nasa 0.7mV lang.

awww... possible cguro qng hndi heat ng laptop umg gagamitin noh po?

[~JahBoy~]

^di po linear yung relationship of the output voltage of the thermocouple and its input heat

[piona]

parang tama yata si Jahboy solar cell, try the radiated light from the laptop LCD screen...it can power-up my calculator with dead battery hehehe

[Ganda692002]

message mo ko pag naka imbento ka na...

meron nyan pero hindi para kunin yung heat ng mga electronic devices masyado maliit yun.. kundi ng environment..

2 yung napanood ko noon sa TV.. isa ito hot air rising meron na nyan..
http://www.worsleyschool.net/science/files/enviromission/page2.html

yung isa sa dagat sya di ko lang maalala..

[Born2BeWired]

You may be able to generate usable power by using a peltier device in reverse.

Bukas, pag di nawala sa isip ko, subukan ko.

[prettyNpink07]

You may be able to generate usable power by using a peltier device in reverse.

Bukas, pag di nawala sa isip ko, subukan ko.

wow!! cge tnx po...

[prettyNpink07]

ano po ung formula sa pag cocompute ng output ng thermocouple?

[Born2BeWired]

Swerte mo di ko nalimutan

Setup:

A 25W peltier heat pump (Marlow Industries SP5242) is used in this experiment. The peltier device is placed over a large aluminum heatsink that will keep the underside of the peltier more or less room at temperature ( about 26C in our lab)



An electric heater is put on the top side of the peltier; all three components are clamped together.



The heater is powered to heat the upper side of the peltier and generate the required temperature gradient. Unfortunately, I ran out of thermocouple sensors in our lab and have no means of measuring the heater temperature when the experiment was conducted. I just used my fingers to check the heater, and I reckoned it to be about 60C. This gives us a temperature difference of approximately 60-26 = 34C across the two sides of the peltier.

Under this condition, I measured 0.75V of open circuit voltage, dropping to 0.5V with a 10 ohm load (50mA current).

These results tells us the idea will work, as long as you can live with its low conversion efficiency. Just put in series more peltier to get to the desired voltage. The 50mA current should be enough to charge a battery, or even operate a low power electronics device.

[NanotecH]

@prettyNpink07

sa pag design ng thermoelectric generator kailangan i-maintain mo ang temperature difference ng thermoelectric module (meron din yan dun sa mga portable electric cooler na ginagamit sa pampalamig ng softdrinks or tubig). meron ka ring makikita dun sa mga cpu cooler na TEC (thermoelectric cooler). although less efficient, puede na ring gamitin for experimentation.

i-google mo Thermoelectric Generator para makita mo ang idea...