New Power Record (Again) On My DIY Hydro Electric System.

Introduction to the Hydro Electric System 00:00

"This is my hydroelectric system. In the last video, we generated 1,100 watts."

• John introduces his hydroelectric system and references the previous video where he successfully generated 1,100 watts using a new turbine he calls the "Santa" turbine.

• He mentions that this video is part of a series documenting the construction of a hydroelectric system on his farm pond.

Preparation and Maintenance Tasks 00:50

"I have an air leak there, coming from the draft tube."

• John identifies an air leak in the draft tube of his hydroelectric system. He suspects that the leak might be coming from the connections where the fittings meet the pipe.

• He plans to clean the affected areas with denatured alcohol and apply Flex Seal to resolve the leak issue.

Aiming for Maximum Power Generation 03:34

"We are going for maximum possible power in this video."

• John explains that he is aiming for maximum power output from his system in this testing phase.

• The stator and runner components he designed are optimized to operate at 700 gallons per minute, as exceeding this flow rate may result in energy loss due to friction.

Turbine Smoothing Experiment 04:20

"I want to experiment with acetone vapor smoothing to make these prints as smooth as possible."

• John discusses his plan to use acetone vapor smoothing to improve the finished surface of the printed turbine parts, which are currently somewhat rough.

• He sets up an experiment to test different parts, considering whether the position in the vapor chamber affects the level of smoothing.

Initial Results from Smoothing 07:10

"There is a lot of acetone smell in there, but they don't look any different."

• After conducting the initial acetone vapor smoothing test for three hours, John observes that the parts do not seem to have changed significantly aside from minor improvements.

• He mentions that the Bamboo Lab ASA filament used for printing is resistant to acetone, which complicates the smoothing process.

Further Refinement of Techniques 10:16

"I think I'm just going to brush the blades."

• John shifts his strategy after discovering that brushing acetone onto the printed parts yields better results than vapor smoothing.

• He suggests that combining initial sanding with a brushed acetone application will provide a smoother finish for the turbine blades, which is crucial for optimal water flow.

Finalizing the Turbine Blade Design 12:20

"I’m sure on camera it doesn’t look perfect, but it is remarkably different than it was."

• The process of adjusting the turbine blades is nearly complete, showcasing significant improvements in design and functionality. The final product may not appear flawless on camera, but the changes made have resulted in a noteworthy enhancement in performance.

• Observing the smooth operation, the runner is critical as it spins at 2,000 RPM, indicating substantial power generation potential.

Testing the Turbine's Power Output 14:11

"This is the turbine that we tested in that video. 800 watts, 900 watts, 1,000 watts, 1,000 watts at 1,500 RPM."

• The turbine previously tested was capable of producing power outputs ranging from 800 watts to 1,000 watts at 1,500 RPM. The testing revealed the turbine's efficiency and viability in the hydroelectric system.

• It is clear that the size of the pipe limits flow; the current setup cannot sustain flows higher than 700 gallons per minute.

Understanding Flow Rates and Efficiency 14:58

"What you actually want, the lower the flow is, the less losses to the pipe; the more the turbine can get out of it."

• The ideal scenario for efficiency in the hydro system is a lower flow rate. Lowering the flow minimizes friction losses in the pipes, thereby maximizing the output from the turbine.

• There's uncertainty regarding whether the system can handle the expected maximum flow, indicating a cautious but thorough approach to maximizing output without compromising efficiency.

Modifications for Better Fit and Function 16:38

"Turns out I didn’t have the dimensions right on my diffuser, so it wouldn’t go in there all the way."

• Adjustments to the diffuser were necessary after discovering inaccuracies in dimensions, necessitating additional sanding and recalibrating to ensure a proper fit. New versions were printed to correct the issues, culminating in a smooth and well-fitting part.

• This iterative process shows the significance of precision in hydroelectric system components, crucial for achieving optimal performance.

Refining Components for Optimal Performance 20:49

"I need to take off two threads, so I'm just going to go over to the belt grinder and we'll lop that down."

• Identifying and correcting issues with component sizing is vital to ensure that parts do not interfere with the water flow. Adjustments to the length of bolts are being made to avoid protrusions that could disrupt the system’s effectiveness.

• This careful attention to detail demonstrates the importance of fine-tuning every part of the hydroelectric system for seamless operation ahead of testing.

Air Removal for Water Flow Efficiency 23:07

"There's a couple things going on here. I'm definitely not getting enough flow with the turbine locked to flush the air out."

• The system is experiencing difficulty in removing trapped air from the pipes, which affects overall water flow and efficiency. The operator attempted various methods to bleed air pockets for optimal performance.

• A vacuum pump was considered for removing air but proved ineffective in generating sufficient suction, highlighting the challenges often faced in DIY hydroelectric projects.

Preparation for Final Testing 25:00

"I need to coat this circuit board in grease because it's going to get exposed to the water and I don’t want to ruin it."

• As preparations are finalized for testing, protective measures for electrical components are crucial, particularly in ensuring that the circuit board is shielded from moisture.

• The installation of water misting nozzles will help to manage heat during the process, indicating a thoughtful approach to maintaining the system's integrity during high-power operations.

Observations on Air and Water Flow 25:43

"The first thing you'll see is air bubbling out of the discharge, then the water comes in through the clear pipe."

• The video starts with visible air bubbles escaping from the discharge, indicating the movement and interaction of water within the system. This provides initial insight into the operational state of the DIY hydroelectric system.

• As water enters through a transparent pipe, it allows for a direct observation of both air and water dynamics, essential for understanding system performance.

System Tuning and Challenges 25:45

"One thing to note here is that I forgot to apply the brake, so I’ve turned the water on, and the turbine is running free."

• The creator admits to forgetting to apply the brake, which results in the turbine operating without restraint. This oversight highlights the importance of proper system settings before running tests.

• Running the turbine freely led to unexpected high RPMs, with the creator noting it reached up to 2100 RPM, signifying a potential risk if not controlled properly.

Leak Management and System Testing 26:31

"Looks like my bolts are leaking surprisingly."

• Upon inspection, the creator found leaks at the bolt connections, indicating areas in need of tightening or better sealing.

• Tightening these connections proved necessary to reduce leaks, showcasing a common issue in DIY hydroelectric projects and the importance of ensuring robust construction before proceeding with testing.

Water Hammer Effects 27:11

"Wow. We're about to see water hammer in action."

• The creator demonstrates the phenomenon of water hammer, which occurs when the flow of water is abruptly stopped, affecting the turbine's operation.

• This once again underlines the need for careful control and management of flow and pressure within the system to avoid potential damage.

Managing Air in The System 28:33

"I think that is air coming out of solution because of the negative pressure."

• The video delves into air management within the system, observing bubbles that might not be leaks, but rather air escaping due to negative pressure conditions.

• The creator takes steps to remove air, suggesting the use of a vacuum pump to ensure optimal water flow without disruptive air pockets.

Pump and System Efficiency 29:51

"I’m getting really good water flow and I’m getting really good power output."

• Despite some challenges with air leaks, the creator expresses satisfaction with the water flow and power generation capabilities of the system.

• This reflects a common theme in DIY projects where unexpected setbacks do not necessarily impede overall success.

Troubleshooting RPM Measurement 32:33

"The RPM is not reading, so I wasn't sure if the tachometer was working or not."

• The creator identifies an issue with measuring RPM accurately, which is crucial for calculating power output. This shows the interconnectedness of the system's components.

• The lack of reliable RPM readings halts further progress, prompting considerations for upgradability of measurement tools to improve system monitoring.

Innovations to Address Challenges 37:30

"I just printed this... and it should work to keep the tachometer dry."

• To resolve the issue of unreliable RPM readings caused by water mist interference, the creator devised a solution using a printed component to protect the tachometer.

• This reflects innovation and problem-solving in action, common in DIY hydraulic projects, emphasizing adaptability in tackling technical challenges.

Final Testing and Readjustments 39:26

"Let's go test this thing out."

• After making the necessary adjustments and improvements, the creator is prepared for final testing, ensuring all components are functioning optimally.

• This marks a critical point in the project where anticipated results will be verified through systematic testing.

Motion Capture and Air Purging Process 40:05

"I have my camera down there looking at the discharge to see how much air is coming out."

• The video begins by highlighting a camera setup that captures motion at 240 frames per second, specifically monitoring the discharge from the hydroelectric system for air bubbles.

• The host is preparing to officially start the hydropower test and plans to use a valve to purge air effectively since their vacuum pump is temporarily out of commission.

• It is vital to manage the flow of water properly by avoiding large slugs that could damage turbine blades and prevent pressure spikes that could cause pipe failure.

Observations During Operation 41:08

"You don't want a big slug of water coming down, snapping off your turbine blades."

• As the system operates, the host reports observing significant turbulence and air at the discharge initially, which calms as the air is flushed out.

• The host emphasizes the importance of cautious operation to maintain a balance and prevent damage from erratic water flow.

• New approaches are tested, including managing air release without the use of a vacuum pump, allowing for natural purging once excess air is collected.

Results of Tests and Performance Tracking 46:07

"The torque readings coming from the load cell might be off by plus or minus a foot-pound."

• Data recording starts after the successful setup of the misting system for cooling during tests. The system achieves high RPMs, peaking at around 2,800 RPM.

• As data logs are analyzed, there's an evident lag between power output and water flow measurement, indicating system inefficiencies and the need for adjustments in logging methods.

• Several performances highlight that while the turbine can reach high power outputs, it struggles to maintain consistent efficiency under prolonged stress, especially with heating issues noted during operation.

Comparative Assessments of Turbines 54:06

"This turbine did produce 200 watts more than the previous version, but it was a total water hog."

• The video reflects on comparing different turbine models, including their efficiency in converting water flow into power. The tests reveal that one turbine model significantly surpasses the others concerning total power output but requires more water, revealing its inefficiency.

• Peak power outputs and flow rates are documented, providing a comprehensive understanding of how each turbine manages available water flow versus power production.

• The analysis indicates that for sustained hydroelectric efficiency, using a turbine designed for lower flow might be a better option overall, despite the tempting higher output of more powerful models.

Turbine Performance Analysis 54:43

"We're almost at 12,200 watts and I've seen much more desirable turbine performance."

• The video highlights a significant wattage output from the current turbine setup, reaching close to 12,200 watts.

• The presenter compares the efficiency of their current turbine with a previous turbine that generated around 14,500 watts, noting that despite lower maximum output, the current turbine is more efficient in terms of water usage.

• There is an observation that the system held up well during the stress test, with no catastrophic failures, and all components, including the bearings and axle, performed well.

Future Steps in Hydroelectric Setup 55:56

"Now I'm going to start out with the 475 GPM turbine to maximize its efficiency."

• The plan moving forward involves optimizing the 475 GPM turbine to enhance its efficiency before integrating it back into the system.

• The next actions will include adding a generator to the turbine to generate electricity, followed by testing the system electrically with an inverter.

• The presenter will also explore options for the generator setup, including whether a transformer is needed and how many volts will be supplied to a workshop.

Upcoming Events and Engagements 56:55

"I’m going to Open Sauce this year—July 17th through 19th in San Francisco."

• The presenter shares that they will be attending Open Sauce, a YouTube convention that brings together creators with STEM-based content and their fans.

• They express enthusiasm about the event, encouraging viewers to attend and visit to say hi, based on the enjoyable experience they had at last year's convention.