Recent content by Apache

I mean convert the heat dissipated out from device to other form of energy and used for other purposes. Normally we just treat them as heat loss because temperature is too low and it is not much efficient to be converted. So now I am trying to convert heat dissipated from condenser of fridge to...

How can I preserve energy dissipated out from some devices that always extract heat like fridge? Do you guys have some alternatives or ideas to convert heat energy to electrical energy that can supply some sensors and indicators? Thanks!

Sorry, just now i failed to upload picture via mobile. Please help me take a look, thanks!

What is the difference between this two types of support when we finding horizontal displacement? Attachment is at the comment below. =D

Finally I use a (12V, 4.5 amps air compressor), (lifepo4 battery 12v 2ah, max charge current 3.5A), a (12V 3A continuous duty Permanent Magnet DC Generator), hardly match a 35 mins pedaling to charge the battery. It compensate 25 mins of relax when air tank discharge and drive my air muscle, the...

Yup, I have fix a voltage regulator in my circuit, thanks!

Finally I reduce my weight by using lighter materials yet affordable price for my design.. since it is hard to create buoyancy force or any pressure difference between my devices on my bicycle! Thanks you all!

Great idea! I have figured it out and learned a new thing! Thanks!

And add a voltage and current regulator to ensure that my air compressor will not burn...is it feasible? coz i can't find any ways to charge a battery in short time also =(

http://www.ebikessf.com/node/263

My design shud be human power..mon is due date ady...i still haven solve the problem..now i chg my compressor to a 12v portable air compressor...i found a hub dynamo that can output 50 v and 35 amp, can i directly connect it to the compressor to drive it directly?

So now i need to charge a 12v battery in a shorter time by bicycle dynamo, any ways can make it not longer than one hours?coz my battery later need to supply a 12v load...any better suggestion to make my design feasible...coz i juz left this electrical prob...thx!

I just search a 12v 55A dynamo, is it workable by human peddling on bicycle?

Can I ask how long a dynamo of 12 V, 6watts to charge a 12 V, 100 Ah battery? And by connecting the battery to a air compressor working on 1.2 hp and 12 V, max amp draw = 18Amps, how fast the battery will become flat?

I have a mechanism wish to disconnect connecting rod and crank when i cycling so that i do nt need to use additional force to turn connecting rod also but connect them once my driving system is set up and piston that connected to rod can rotate my crank how can i set up this mechanism?