This project goes into the build of a homemade water fueled radiant Air heater / Air Cooler that can blow cold air or hot air into your room or space using a heat exchanger and an old car radiator fan . This system can pump out cold air at 1500 CFM with the temperature reaching 55F and heat output at almost 170 F. The entire system is powered by a 100W Solar Panel and costs around 60 to 70 dollars . The major advantage of using this cooler is that it doesnt add any humidity to the air.
The materials you need to build this Cooler/ Heater are as follows. Standard bilge water pump or aquarium pump or 12V DC fan for solar, seven inch 12V 80W car radiator fan, 10 X 12 piece of plywood, a couple of eleven inch 2 x4’s, 8 X 8 heat exchanger, one inch PVC tubing , a couple of hose barbs with coupler , a tub to hold the ice or hot water . A 12V DC heating element can also be used to warm up the water
The first step is building a frame to hold the heat exchanger and the car radiator fan together. This is done by a taking couple of 11 inch 2 X4 ‘s and mount them parallel to each other on a 10 X 12 inch piece of plywood. A hole is cut on the plywood to place the car radiator fan . The heat exchanger is attached on the back side of the fan just between those two eleven inch 2 X 4’s.The heat exchanger is rated for over 25k BTU’s and covers about 1000 sq ft that can heat or cool an entire living space.
A tub containing Ice cold water or hot water is used as a source of heat or cold . The Water pump submerged into the water source is connected to the inlet tubing . This pumps the cold or hot water into the input of the heat exchanger . The car radiator fan is powered on using the 100 W solar panel and the hot or cold air radiates into the room or space. The water returns back into the tub through the other tubing .
The solar panel is connected to a speed controller that is further connected to the radiator fan to adjust the air flow.
The 200gph water pump with the half inch pipe is connected to the inch pipe main tubing using half inch barbed to inch threaded and inch threaded to inch barbed and a threaded PVC coupler.
To make the hot water , we use a 150W DC Water heating element . The heat element is connected at the base of the tub or barrel . This unit is powered by a solar panel . You can use an AC powered immersion water heater if there is no option for solar.
A 100W Solar panel is powering the 80W Car radiator fan and 12V 350 GPH Bilge pump that is used to pump the water to the heat exchanger and back . It also powers Heating element if you plan to heat the water this way. Another way to heat the water is using a 50 ft copper tubing. The water is pumped through the copper tubing using a small pump and a 5W Solar panel and heat it up. The hot water is then passed through to heat exchanger .
- How to build a Powerful DIY Off-Grid Emergency Backup Generator .Fully Portable!!This project goes into the build of a portable and powerful off grid emergency solar generator with higher capacity than commercial units at a fraction of the cost. This system can keep a small fridge operating 24/7, charge your devices, power TV ,LED lights, Laptops. it is small enough to be stored away in your garage and portable enough to move where it was needed. The main components used to build this generator are as follows. 4 Renogy 100 Watt 12 Volt Monocrystalline Solar Panel Renogy Rover 40 Amp MPPT Solar Charge Controller Renogy Deep Cycle AGM Battery 12 Volt 100Ah Sug 2000W(Peak 4000W) Power Inverter Pure Sine Wave DC 12V to AC Renogy 20 Feet 10AWG Solar Extension Cable with MC4 Female and Male BLACK+DECKER BM3B 6V and 12V Automatic Battery Charger / Maintainer 6 Circuit Fuse Block W/Negative Bus Milwaukee Hand Truck with handle Control Panel with USB Charger,LED Voltmeter,12V Power Outlet, ON-OF Switch. To create a solar system that can truly meet your needs and cope with the variability of your environment, you really need to do some planning. This will help you avoid building a system that isn't up to the job and can save you considerable money by preventing the expense of replacing components later on. To calculate the number of batteries and solar panels you will need to create a system to provide power in all seasons through inclement weather and at your particular latitude, you need to determine the devices you intend to power, log their power consumption across a few days using a power meter. Then find the reserve days . This is how many non sunny days the system can tolerate while still powering your devices. Also find the recovery time by calculating how many days of sun that will be needed to fully recover when the batteries have run down due to lack of sun. You also need to know the usable charging hours in day and the actual battery round trip efficiency since batteries give back something less than the amount of power used to charge them. Here we use 4 100 Watt 12 Volt Monocrystalline Solar Panels to charge our 12 Volt Deep Cycle Battery. The panels are wired in series so that the voltages add together and you can get up to 80 volts from four panels. With this system there is enough voltage to begin charging as soon as there is any daylight at all. It also charges the batteries right up until dusk. Another advantage of the series wiring is that it is much better for long wire runs when the solar panels are not close to the generator and you can use less expensive smaller wire gauges for the solar panel runs. To use panels in series you must have an MPPT type charge controller. They are specially designed to accommodate the high voltage of panels wired in series up to the particular controllers voltage limit .MPPT controllers are much more efficient converting nearly all the energy coming from the panels into charging power for the battery. A 2000 watt pure sine wave inverter is used that can provide up to 4000 watts of surge power, and with enough battery support can run any conceivable device including those with motors. To store energy we use a 2 12V AGM marine batteries . These give plenty of reserved capacity that will last with reasonable care . They don't leak and can tolerate cheaper discharges and have very good round trip efficiency. Four 100 watt solar panels are connected through the 40 amp MPPT charge controller . The panels can deliver up to 2400 watts of solar power in the shortest days of winter. And the charge controller converts solar power to charging power very efficiently and also support serial panel configurations increasing the systems capability. A heavy duty hand truck is used for loading all the components . A frame made of angle iron is welded on to the platform to mount the batteries. Two angled straps are welded across the truck to provide more support for the battery frame. The various components are mounted on a back support made of five eighth inch plywood. I use a tapered punch to make starter holes for all the screws that hold the components. The hand cart is laid on its back and the plywood board is aligned in such a way it doesn't block the holes. While the cart was on its back I screw down all the components with stainless steel screws. For the project we use a thinner 18 gauge wire for the low current circuits, medium 14 gauge for the 12 volt port and heavy 10 gauge for the high current charging circuits. Red is always connected to the plus or positive connectors, black always to the minus or negative. The positives and the negative connection coming from the solar panels are connected to the solar charge controller with the help of a quick disconnect Wire Harness SAE Connector. The negative of the solar charge controller is directly connected to the negative connection of the battery while the positive goes through a fuse block before connecting the positive of the battery. The negative connections from switch, voltage display ,USB ports and battery charge meter is connected via a medium 14 gauge wire to the battery negative. The positives are connected to the battery through the fuse block. The 12 volt port is on its own fuse so it gets separate wires in the medium 14 gauge. The positive of the 12V Battery Charger is connected to the fuse while the negative is connected to the battery. The batteries are placed on platform of the cart facing opposite directions so that positive and the negative terminals are near the plywood backboard where the components are attached. The battery connection cables are cross connected to create a parallel 12 volt configuration careful to ensure the block cable connected only to minus terminals at both ends and the red cable connected only to plus terminals at both ends. Next step is the orientation of the solar panels. As you probably know the sun is lower in the sky in the winter higher in the summer. In the winter, the days are also shorter as you really want to optimize for winter to get as much energy as you can when the days are short. Since my panels are fixed, we want to point them due south and angle them for the winter sun. There are tables you can find online that can give you a pretty good idea of the right vertical angle for your geographical location. In the summer the sun is pretty much straight overhead, so the panels are optimal when laying flat. The angle panels are their most productive in the depth of the winter losing a little each day until the height of the summer as the sun is further off the winter angle. Meanwhile, the flat panels are less efficient in the winter because the sun is at a low angle but gaining each day as the sun gets higher in the sky. https://www.youtube.com/watch?v=QZYAAatdlmc
- How to build a Simple Homemade Water Distiller that turns dirty water/salt water into clean fresh pure waterThis project goes over the build of a Simple and cheap Homemade Stovetop Water Distiller.Turn your dirty,salt water into fresh drinking clean water fast.This setup is great for everyday or emergency use. Assembles/disassembles fast for easy portability. The material needed to make this distiller are : A teapot,10 feet copper coil, corrugated stainless steel or copper tube. The water source coupling is connected to a foot and a half corrugated three quarter inch copper pipe that further reduces to the half inch and then this is a connected to a 10 foot roll a half inch copper tubing. The three quarter inch threaded two half adapter is soldered to the 10 foot copper coil tubing. Bend the tube into a tight spiral. A Stainless steel or copper foot and half corrugated pipe goes into the 10 feet twisted copper coil. The end of the corrugated pipe goes into tea pot or water source connector. A total of 12 feet of coil. The steam rises without bringing any of the impurities along with it. The steam travels through the coils and slowly cools and condenses. It finally condenses back to its liquid form and drips out as clean water. In order to make it even go faster, put some cold towels around the coil or even submerged in water. A little bit of aluminum foil over the top is kept and the copper tube is extended down a little bit into the glass jar. Everything stays completely tight the whole time. You can make this distiller with that single corrugated copper tubing, but the more copper we add, the more time it has to condense down into purified liquid water. During the test,we have managed to acheive half a gallon in 2.5 hours. You can use this on the stovetop, rocket stove campfire, even a parabolic concentrator like dish cooker. Anyway to get that water boiling, then just hook it up like this. Makes tons of clean water really fast. https://www.youtube.com/watch?v=KoEn5kfpTYI
- How to build a Homemade Chainsaw Mill from Scratch. Step by step Build InstructionsThis project goes over the build of a simple and basic DIY chainsaw mill from start to finish. This chainsaw mill is portable and doesn't require very large space . This is a very inexpensive way of producing lumber from logs and can be made from easily available materials from your local hardware store. The materials you need to build this chainsaw mill are one by one square tubing, half inch square tubing, quarter inch flat bar, weld nuts, bandsaw and welding unit. The welder used here is Millermatic 212 auto set mig welder and the saw is Homelite 1130g The dimensions of the saw are as follows. A 12 inch deck to slide across the log that acts as a milling surface. The max width of the mill is 26 inch. An 8 inch metal to grab the bandsaw on both the sides. A quarter inch flat stocks for the holding the saw. We start by cutting 26 inch pieces for the sides and 12 inch pieces for the sides. Assemble them into a rectangle and weld it using a MiG welder. Do Check if the corners to make sure it is square and the sides are even. A center bar welded into the rectangular guide plate, just to give it a little bit more support and make it so that it doesn't twist. Two guide posts are welded onto the sides. 2 larger pipe sections of dimension one by one is cut .This will slide within the guide posts. This is done so as to make the saw adjustable to how thick it cuts a slab .The side posts also gives you adjustability on the deck to move up and down. 4 quarter inch flat bars of length nine inches are cut . Two of them are bolted onto bottom section of the rails that slides up and down on the guide posts . The saw blade is placed securely between these bars. A small spacer block is welded onto the bars so that it doesn't touch the saw blade. Three eighth inch weld nuts are welded onto the side posts . Tightening with the bolts locks the adjustable rails in place. A crossbar is welded onto the guide posts .These help push the bar along when you are operating the mill and it is a nice place to put your hand , It feels like you are farther away from the chain. The chain saw blade is inserted between the flat brackets at the bottom and it is locked tight in place between the spacers using 3/8th inch bolts. For the first cut, we attach a flat plate at the top of the log so that the bar has something to ride. The height of the cut is adjusted with the help of the side rails on the mill . The saw is then started and placed on top of the flat plate to begin cutting the log. https://www.youtube.com/watch?v=DA-HknSaBvI