If you’re going to run your home ,cabin or garage off grid, you are going to need some way of having power. Enter Solar and Wind. This project goes over the build of a complete off grid power generation system that can harness the clean and green renewable energy of the sun and the wind.
Here is the basic rundown of the system .We go from sun to solar panels, there is no limit on how many solar panels we can put. It goes into a charge controller, it helps the solar panels create really efficient electricity to be pumped into your battery bank. Charge controller also makes sure that the batteries are being charged correctly and stay optimum. So solar panels to charge controller, and then that goes directly to your battery bank.
The other source of renewable power is wind. The wind turbine is connected to a stop switch that goes into your battery bank. In some cases in between you can put up a wind turbine charge controller.
Next step is converting the DC power to AC power with an inverter. The inverter basically converts the power to make it usable for your home. The inverter also has to be sized appropriately. From inverter to breaker panel which spreads the the power out throughout your house through your light switches, wall sockets. From breaker panel straight to your house or cabin.
The first step is sizing your system. The battery voltage is going to determine what type of equipment you are going to be buying, and how you are going to be wiring your battery bank. So if you go with a 12 volt system, then you are going to want to make sure that your solar panels are wired up correctly for 12 volt. Even when you go with a wind turbine, you are going to want to make sure you buy the correct wind turbine for your battery voltage .So everything has to be sized appropriately so that you can collect as much energies as efficiently and then you can draw that power out.
The golf cart batteries in my system are of 6 Volts. I have 6 of them wired in parallel, and in series to give me a 12 volt battery bank. The control panel box consists of my charge controller, voltmeter and 2 ammeters for both reading both solar and wind power amps.
Four 12V Solar panels , each 100 watts are wired together . All the positives are connected to each other and all the negatives are connected to each other. The wiring goes straight into the control panel.
The wind turbine used here is also 12V.The 3 Phase connections from the turbine goes into the bridge rectifier. The negative connection from the rectifier goes straight to the batteries, the positive goes to a junction box that connects the turbine and the inline fuse and 50amp breaker. The negative of the inverter goes into the negative of the batteries ,positive to positive. The romex wire from the inverter goes into the breaker panel in the house.
The Permanent Motor Alternator turbine stands on a 6 foot pole .We have these two steel pipes that go down into the ground, three feet. There’s another piece of steel that runs across here that’s welded together, and it’s in the bottom, and then we poured concrete over it to anchor it. Three tie down points are connected to the turbine to keep the pole steady from rocking around especially in high winds. So that way, when the blades turn, the bearings don’t get worn out prematurely from wobbling. The Permanent Motor Alternator (PMA) used in this turbine consists of 2 shell casing, two bearings, a rotor inside and a stainless steel shaft.
The tail of the turbine is made from a sheet metal cut to look like a fin.It is attached to a steel pole.This is further connected to the PMA alternator.
The 11 blades of the turbine is attached to a hub and a pulley through a steel shaft. The belt is connected to a secondary pulley which is connected to the Permanent magnet alternator. The wire from the PMA is connected through MC4 connectors to the control panel.
Wind turbine and solar power system overview :
Setup of the wind turbines :
- How to build a Backyard Waste Oil Burner Powered Water Heater to produce Free Hot Water for your HomeThis projects goes over the build of waste oil powered free hot water heater for your home .This converts an old used domestic water heater to run on waste oil, engine oil or cooking oil. With as little as one liter of waste oil, this heater gives twice the heat output than a domestic electric powered water heater .As waste oil is free, this is more economical than running on gas or electric. The setup of this waste oil heater is very simple and easy. We have a waste oil burner that is placed under the domestic water heater. The burner is connected to a blower from a car. This blower is powered by a 12V battery charger . The burner is also connected to a drip feed waste oil pipe through a small pipe. The oil feed from a suspended tank, which gives it a gravity feed dribbles into the inlet pipe on the burner and it is simply blown into the burner by the force of the air from the blower. To control the oil flow ,we have a valve on the oil tank. The cold water comes into through the inlet hose at the bottom of the tank . From there burner just fires the heat up through the center of the heater as it would normally if it was gas fired. The hot water comes out from a outlet hose at the top of the tank. The waste oil burner is made out an old fire extinguisher bottle. The beauty of using extinguisher bottles is you don't have to worry about any flammable gases in them, and the metal seems to be quite durable. Make sure that the air and the fuel enter the bottle at a slight angle in order to create some swirling. This makes sure that the air and the fuel mix and will burn completely. And also that the bottle is kept hot so that the liquid oil will vaporize and the gas will burn. The inlet pipe for the waste oil and the blower is positioned at 25 to 35% of the way up to the bottle. The inlet pipe has a small bend in it so as to promote swirling within the bottle. This is important in keeping the bottle hot and self sustaining. The burner has a clean burn with almost no smoke. The output of the oil burner can be controlled by the amount of waste oil being dripped into the burner and by the amount of air blown into it. This oil gas burner is more powerful than a gas burner and the heat produced can overpower the heat sink threshold of the water heater . A vent line is installed on the system so that any build up pressure can be released. Apart from heating hot water , this set up can be used for space heating , pool heating or garage heating. https://www.youtube.com/watch?v=L4xq_GSjWLI
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