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  • DIY Video : How to build a simple Off Grid Refrigerator using a 5 gallon bucket . No Ice Needed !!
    This project goes over the build an off grid survival fridge using a five gallon bucket . It has a peltier cooling module on the top. So no need of refrigerant or ice cubes. The materials you need to build are as follows. A 12V 12A Thermoelectric Peltier Refrigeration Cooling System unit from Amazon, a 5 gallon bucket , 4 gallon Styrofoam liner from Home depot. This refrigerator works by the principle of peltier effect. The Peltier effect shows that a temperature differential is created when a DC current is applied across two different materials .The peltier unit is made of using two thin ceramic wafers with a series of n and p semiconductor materials sandwiched between them. The ceramic wafers add rigidity and provide the necessary electrical insulation for the module. The n type semiconductors have excess electrons, while the p type have a deficit of electrons with one n and one p making up the junction couple that creates the thermoelectric effect. When a DC current is applied to the circuit, the thermoelectric module can work as a cooler or heater depending on the direction of the current. A thermoelectric cooler or tech transfers heat from one side of the device to the opposite side against the temperature gradient creating a cooling effect. We use heat sinks and CPU fans on the peltier chips to radiate and lower the heat generated on the hotter side and move the cooler air into the bucket from the cold side. The peltier setup in this build uses two 12V 92mm fans on the hotter side glued to a large 200m X 100mm Aluminum heat sinks, two 12v 5.8amps peltier chips are glued under two 40mm heat sinks using thermal paste. 2 40mm fans are also attached to the heat sink. The Styrofoam liner is inserted in to the five gallon bucket . Two small rectangular cuts are made on the lid of the liner so that the heat sinks fits inside there and gets good airflow around the edges. We cut a rectangle on the top lid of the bucket to allow the peltier module to sit in. Small vent holes are drilled on the sides of the lid using a standard quarter inch drill bit so that no hot air gets caught between the bucket lid and the Styrofoam lid. Cut a small notch in the bucket using tin snips so the wires from the peltier units will come out without getting pinched under the lid. You can hook this unit to 100 watt solar panels straight , 12 volt deep cycle battery, 12 volt transformer to the wall, or you can use your car CIG lighter. This unit can drop the temperature inside the bucket from 81 to 47 degree Fahrenheit in minutes.
  • DIY Video:How to build a simple Off Grid Electricity Generation System using Two Batteries
    This project shows you how to generate Off grid AC Power using a simple Solar power station with 2 batteries.This system can provide enough off the grid power to run your appliances around the house.You can easily run light,a laptop computer, small tv and fan for several hours. Most of the item required can be bought from your local store or Amazon.The rough cost of building this system is as follows : $150 for 100W Solar Panel $75 each for 2 batteries. $20 for 400w Inverter $40 for charge controller. The whole system comprises of four things, a couple of batteries, inverter, and a charge controller.The inverter is purchased from Harbor freight ,the charge controller from fry electronics.The deep cycle batteries are from Walmart. So you start by setting up your panels outside. In this case, I have six one amp panel set up, 15 watts a panel, so that's 90 watts coming in. I lead them straight down to the main connection, it's just the six black wires all connected together and twisted tightly to that extension cord wire and the six red ones connected.Feed the line into your house,goes straight to the charge controller. The output wire from the charge controller goes into the battery.So solar panels to charge controller ,charge controller to lead battery in your bank.And as you want to expand this to two,three or more batteries, just use some automotive cables and go from positive terminal of one the positive of the other. And with a black wire, negative terminal to negative terminal, the other one. When you want to run something, just get your inverter that converts the power from DC to AC, take the clamps, clamp them onto that same lead battery in the system. So again, red to the positive side, black to the negative side and flip it on. So remember, when you hook things up like an inverter, or the charge controller or voltmeter, anything you're going to hook up on here, make sure you always pick one of the batteries to be the lead battery and hook everything to that. Whether you parallel one extra battery with it, or five or six or however many you want to put on there. Also added here is a lighted voltmeter which gives you a constant reading on your battery bank so you know exactly what's going on with it at all time. A simple system that can come really handy during a power outage or in any emergency situation.
  • How to build an Inexpensive Geothermal Solar Air Conditioning System to Cool your Garage using an Old Car Radiator ,Solar Panel.
    This project goes over the build of a cheap Geothermal Solar air conditioner that can cool your home with the Earths natural cool temperature. A few feet underground, the temperature remains between 55 and 60 degrees Fahrenheit. This is true regardless of the weather above ground.The geothermal unit siphons heat from inside and vents it into the water or refrigerant in the loop. The cool temperature underground then lowers the temperature of the liquid back to 55 degrees. In my case when I draw the water well, the static water level is 2 feet above the ground and and what that means that there is a free flowing well that runs down the hill. This is connected to a 55 gallon drum buried in the ground to keep it cool. A circulator pump is used to pump the water to the radiator. The water well is about 85 feet.We drop a 10 foot pipe in there and get a cheap pump from a car and probably some check valves valves and maybe start a natural siphon and run out of solar. You will need an old car radiator for this project. The Radiator used here is from an old Volvo Car. This is used to circulate air using a solar panel. The water coming in is connected to the radiator and the water coming out the is attached to a PVC drain pipe . The radiator is hooked to a motor connected to a solar panel. A Temperature sensor is attached to the radiator fan to detect the indoor temperature. The pump is out of the same Volvo car from which I got the radiator. A Coolant temperature sensor can be added to measure the temperature difference from the inlet versus the outlet and just see how much heat get pulled into the water . The system works on Solar.You will need a Charge controller,DC to DC Convertor and 12 or 24V batteries.