How do you store the energy you get from solar panels. Tell me what device or part i need to connect to the solar panels to store the energy to use it later on in the day aftter the sun is out?
Question by dorotheabrown37 | last reply
I'm going camping with some friends and would like to make a cell phone / device charging station that could accomodate as many as 5 cell phones at one time. Any ideas on how to do it?
Question by TheGreyWolfe | last reply
A team led by Massachusetts Institute of Technology students last week successfully tested a prototype of what it says may be the "most cost-efficient solar-power system in the world," revolutionizing global energy production.The 12-foot-wide dish, made of a lightweight frame of thin aluminum tubing and mirror strips, concentrates sunlight by a factor of 1,000, according to the Cambridge, Mass., university. It can create heat intense enough to melt a bar of steel. More from ZDNet
Topic by Goodhart | last reply
I want to put some propellers on a PC fan motor or an old floppy drive motor and make free electricity, enough to charge my garden solar lights. I have tried connecting leds to an old printer motor and spinning it, the back emf lights the led for a second. spinning the other way lights the other led in reverse polarity to the first.... My problem is that the motor would continue to spin in the same direction in the wind...only generating electricity for a split second........ Pleeeaaaase help me!
Question by niceribs
Have been browsing the different sites looking for a good way to passively heat and cool my place, for winter times heating primarily. Was looking at the following instructable https://www.instructables.com/id/Solar-Heater/ when the above thought hit me. If I didn't want to cut into my wall to do the solor heater, is it possible to run it through earth tubes to provide the heating. Didn't know if you would have to much heat displacement coming through the tube going into the earth. Airflow is to be ran by a simple computer fan on low powered solar panel/battery
Question by mysfit | last reply
I know for a fact that in the EU we can now have energy effient homes that utilise the heat from common sources like water heater, solar or just what is under the roof to generate electricity or heat other things.Started to wonder if ever someone tried something in that region on an affordable hobby level.Down here properly insulated homes are rare as a pearl in a supermarket oyster.So my main interest would in utilising the excess heat under the roof during the summer times.This season I measured and average of around 60°C during the day.On those day over the 35°C mark it went up close to 75°C in some areas.I guesstimate that if the draft areas are sealed off a bit a fan system should able to suck air at about 50°C out for about 6 to10 hours per day during the summer.If I would add a small heat exchange made from a solor hot water panel and some piping:Would hat combine heat output be enough to power an ammonia fridge or even freezer?What options are there that you guys created to generate some electricity from other heat sources?Thinking about the exhaust heat from the hot water system or heater.One thing I am planning on is a small solar heater for my big fish tank.Currently not anywhere near a window but would like some Arduino to control a water pump by temperature comparison to provide warm water during the winter months for free.Beats two 400W heaters if you ask me LOLThe potential for some easy to create heat exchange system to generate a bit of electrictiy or power heat exchange system is huge.Australia is full of badly insulated homes and the US is not far behind.And not matter how good they are all those homes still heat the roof cavities like hell.
Question by Downunder35m