James Biggar

Build A DIY Axial Flux Wind Turbine Pt 10: 4 Months After Install Get the plans here: https://renewablesystemstechnology.com/1-kw-axial-flux-hawt.html Performance video: https://www.youtube.com/watch?v=X2tUB3XPCGU Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Build A DIY Axial Flux Wind Turbine Pt 9: Furling & Increasing Eff. W/ A Capacitor In this video I install another 8 awg 3-wire in the tower to extend all phase ends to ground level so that in the future I can switch wiring configurations without having to lower the turbine. I also show how I wire in another full wave rectifier to lower the voltage and increase the amp's from the 24V pmg to work efficiently on a 12V system, as well as adding a 75V/30000MF capacitor to act as a buffer between the turbine and the battery bank; the capacitor will absorb overcharge during peaks and release the energy to the batteries as the wind speed and output from the turbine decreases, which helps to compensate for power intermittency due to wind speed variability. I also caught the turbine furling for the first time on video. I didn't record any wind speeds higher than 16 mph (peak power was ~158W) so I'm going to add some weight to the tail to keep it from furling until around 25 mph. Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Build A DIY Axial Flux Wind Turbine Pt 8: Low/Dirty Wind Performance Output from the new turbine in low, turbulent wind (tower should be another 20 feet higher to put the turbine above the tree tops). So far so good, I'm really pleased with the performance. Reached 113 watts in a ~13 mph wind. At 26 mph it should produce around 900 watts (double the wind speed and output increases by a factor of 8, in 'theory'). YES, I am getting a Classic very soon so that I can log data properly. In the mean time, stronger winds are in the forecast for this coming week. Hoping a storm will blow in so that we can see some furling too. Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Build A DIY Axial Flux Wind Turbine Pt 7: Performance Update, 'Cut-In' Wind Speed The HAWT is installed and working great so far, better than expected! The blades seem to be a perfect match for the axial flux pma. Start up speed is around 3 mph and the cut-in speed is almost immediately after at around 4-5 mph. Will have more updates as the wind picks up later his week. Got to start saving up for a Classic now. Thanks for watching! Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Build A DIY Axial Flux Wind Turbine Pt 6: Final Assembly Blade hub assembly, balancing, and final cosmetic touches are finished up in this video before the installation on the tower. Performance updates to follow. Thanks for watching! Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Makeshift Cordless Drill Lathe: Turning A Foam Wind Turbine Nose Cone Here's a quick video showing a contraption I quickly made to turn the nose cone (later reinforced with fiberglass). Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Proprietors conducting an aerial LIDAR survey.

Check out the complete build video for the turbine here: http://bit.ly/DIYWindTurbine Get the plans here: http://bit.ly/TurbinePlans In this video I use the blade that I hand carved in the last video as a pattern for duplicating the remaining blades for the HAWT. Router duplicator: http://resystech.com/router-duplicator Facebook: https://www.facebook.com/RenewableSystemsTechnology

Build A DIY Axial Flux Wind Turbine Part 5a: Hand Carving The Master Blade In this video I use blade element momentum theory (BEMT) to layout and hand carve the first of three blades for the HAWT out of red cedar. This blade will be used in the next video as a pattern to duplicate the other two with the DIY router copy mill that I made last year. Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Build A DIY Axial Flux Wind Turbine Pt 4 PMG Assembly & Bench Test This video shows the assembly of the axial flux pma, and a few quick bench tests to make sure everything is working properly. Each phase produces 3.5-4 volts AC @ ~60 rpm. When all three phases are wired in 'star' configuration and rectified to DC voltage, the pma reaches charging voltage (12V system) @ ~80 rpm. There is also NO cogging. In the next video I'll be carving blades for this machine using blade element momentum theory. Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Build A DIY Axial Flux Wind Turbine Pt 3: The Stator The stator is 3 phase star and wired for a 24V system. There are 9 coils, each consisting of 75 turns of 14 awg enameled copper wire. Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Build A DIY Axial Flux Wind Turbine: Pt 2 The Magnet Rotors Making the magnet rotors for the axial flux permanent magnet alternator (pma). The rotor plates are made from 1/4" steel and hold twelve N52 grade 2"x1"x0.5" neodymium magnets each. The magnets are bonded to the plates with JB Weld, and encapsulated with standard automotive resin. The next video in this series will show how to make the stator. Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Working on the magnet rotors for the new HAWT build and thought this jig deserved it's own video. Simple and quick way to cut perfect magnet rotors without high tech equipment. http://www.resystech.com

Build a DIY axial flux wind turbine with basic tools and construction materials. This will be a 3 or 4 part series, more video to come as the project progresses. Website: https://www.resystech.com Facebook: https://www.facebook.com/RenewableSystemsTechnology

Showing heat loss temperatures from my diy solar hydrothermal panel on a partially overcast morning. 0°C outside, and reading 25-30°C heat emitted from the glazing (actual temperature inside the collector is likely 5-10° warmer). I take that as a really positive indicator that this panel is going to work great after the changes are made.

Update on the diy solar hydrothermal panel. The collector and heat pipes are working just fine, great heat transfer to the condensers. Unfortunately, the panel is too thin. The flat aluminum piece at the top that I'm using to cover the manifold (in place of the PV cells that were destroyed) is touching both the condensers and the glass, and is radiating a lot of the heat back outside. So I'll be making a new thicker frame to allow adequate space between the collector pieces and the glass, and create an insulated bulk head above the panel for the manifold to limit as much heat loss as possible. CAD preview of the new frame design is at the end of the video. More to come... http://www.resystech.com

Building a DIY solar water heater collector press with basic tools.

Water Vs Acetone: Working Fluid Options. In this video I build two heat pipes to compare the performance of water vs. acetone as working fluids. The pipes were made from 3/8" soft copper approx. 20" long each. The condensers were made from 3/8"-1/2" adapters with a 1.5" long pipe and plug soldered into on end; this allowed for easy assembly and disassembly of the pipes to make any necessary adjustments during testing and eliminated any risk of fire with a soldering torch being near any vapours that might escape from the top of the acetone pipe as it's being sealed. The evaporator ends were simply clamped and soldered prior to the final assembly. Approximately 20% of each pipe was filled with either water or acetone. A heat source was then applied to force the fluids to vaporize and expel the air from the pipe. Before the heat was removed, the pipes were capped and sealed. For performance logging, the evaporators were placed in a pot of gradually heated water and the pipes were situated vertically at an angle of approximately 80°. Temperature data was collected from each end of each pipe via four NTC sensors, then logged and graphed for a comparison of heat transfer rates using PC software. Only one test is performed in the video, please visit the link below to view the completed study: http://resystech.com/water-vs-acetone-working-fluid-options.html

Heat Pipe Performance: Latent Heat Transfer Demo Demonstrating the effectiveness of latent heat transfer via evaporative cooling in an evacuated heat pipe. Heat pipes are used in the solar industry to transfer thermal energy from one point to another by the evaporation and condensation of a working fluid or coolant. They're most commonly used in solar thermal collectors in conjunction with evacuated tube glazing to achieve a much higher thermal absorption and transfer efficiency than conventional flat panel collectors. When one end of the heat pipe is heated, the working fluid inside the pipe at that end evaporates and increases the vapour pressure inside the cavity of the heat pipe. The latent heat of evaporation absorbed by the vaporisation of the working fluid reduces the temperature at the hot end of the pipe. The vapour pressure over the hot liquid working fluid at the hot end of the pipe is higher than the equilibrium vapour pressure over the condensing working fluid at the cooler end of the pipe, and this pressure difference drives a rapid mass transfer that's as fast as the speed of sound to the condensing end where the excess vapour condenses, releases its latent heat, and warms the cool end of the pipe. The condensed working fluid then flows back to the hot end of the pipe. In the case of vertically oriented heat pipes the fluid may be moved by the force of gravity. In the case of heat pipes containing wicks, the fluid is returned by capillary action. http://www.resystech.com

Build A DIY Aluminum Solar Space Heater.

A quick preview of the new thermal battery designed specifically for the Helios solar heaters, demonstrating it's versatility with two different installation methods and four separate performance modes. Build coming in a few weeks. DIY Plans & tutorials: http://www.renewablesystemstechnology.com RST on Facebook: https://www.facebook.com/RenewableSystemsTechnology

Showing the unboxing of the KT Pantera™ blades and some performance readings in low dirty winds. I really need to get that tower raised above the other turbines and trees - unfortunately the rest of the pieces are still under the snow so it will have to wait for now. But overall I'm very impressed and very pleased with the new blades so far. They definitely outperform the originals. I'll post more video once the tower's raised and I do the necessary mod's to the tail. Thanks Thermodyne! Theoretical potential harvest @ 15mph/6.7mps = 1/2(Air Den. * Swept Area * Velocity Cu. * Rotor Coeff * Alt Coeff) = 1/2(1.2kg/m * 2.8sq.m * 6.7mps^3 * 60% * 40%) = 1/2 * 242.5 = 121.3 watts As seen on the meter in the video, the Ghost managed approx 110w/hr peak in 5-15mph dirty winds. Previously, the data logger recorded a peak of over 200w/hr from both the Ghost turbine and the VAWT in the same conditions. Total watt hours are low, however, due to the wind direction and turbulence caused by the trees. Start up speed is approx 5-6mph

Preliminary test of the very first hybrid solar air and water heater - not air to water, or water to air, but air AND water in one module. This 12sqft test module brought 4 gallons of water to a steaming 130-136°F in just a couple of hours. With a lower flow rate this could easily boil water in the collector. For more information on renewable energy, DIY project plans, tutorials, CAD, and more, please visit: www.renewablesystemstechnology.com

Final assembly and a quick test cut. A detailed build guide with plans and a 3D CAD are available at the following link http://resystech.com/router-duplicator.html

Part 2 of the copy mill build. A detailed build guide with plans and a 3D CAD are available at the following link http://resystech.com/router-duplicator.html