A continuation of the discription of our pelton installation. These are not the actual pictures of our wheel but an almost identical one with one major exception which I wll explain later.
This wheel is the heart of the system. Ours was an 18 inch wheel that through belts drove a 20 KW generator.
The yellow thing projecting into the housing is the nozzle that had an inside diameter of 15/16 inch. The water was at a pressure of nearly 200 psi when it entered the nozzle.
The major difference is that ours had a shaft right at the outlet of the nozzle that could either deflect the water off of the wheel for less power on on for full power. There was a Woodward governor that sensed the speed of the wheel and adjusted the defection of the water stream to keep a constant RPM and subsequently a steady current for power to the appliances in the houses. For electric motors you need sixty cycles per second or the motors would burn up. Lights and heating elements aren't as critical but fridges. and freezers sure are.
We had a large faced cycle meter in the kitchen of our house so we could see exactly where the power was and make adjustments if necessary.
With any kind of electrical generation for residences the 6PM to 8PM hours are the highest usage and if we made it through that time period we were good for another 24 hours.
Ours wasn't the only small hydro plant in the area but the only one that was high head and limited water amount. One other ranch that had a wheel that had been installed long ago enough to have used wooden pipe. This was definitely a low head machine as wooden pipe would never take the pressure that our steel pipe one could.
After we installed this system it opened up the possibility for some others in the area and we helped with their design.
After almost ten years of continuous use the incoming pipe started leaking a little so we shut it off and encased the 20 feet coming into the house in a large batch of cement. After uncovering the pipe we discovered that the leaks in the sreel pipe were the result of vibration and that only the welded joints were leaking. We left it off for a week after we poured the cement to let it cure because if we had turned on too soon the vibration might have pushed the cement away enough to continue the leaking.
The system was quite noisey right from the start and we thought it was the water hitting the wheel but after the cement was put in the machine was nearly silent. So what we were hearing was the vibrating inlet pipe.
This wheel is the heart of the system. Ours was an 18 inch wheel that through belts drove a 20 KW generator.
The yellow thing projecting into the housing is the nozzle that had an inside diameter of 15/16 inch. The water was at a pressure of nearly 200 psi when it entered the nozzle.
The major difference is that ours had a shaft right at the outlet of the nozzle that could either deflect the water off of the wheel for less power on on for full power. There was a Woodward governor that sensed the speed of the wheel and adjusted the defection of the water stream to keep a constant RPM and subsequently a steady current for power to the appliances in the houses. For electric motors you need sixty cycles per second or the motors would burn up. Lights and heating elements aren't as critical but fridges. and freezers sure are.
We had a large faced cycle meter in the kitchen of our house so we could see exactly where the power was and make adjustments if necessary.
With any kind of electrical generation for residences the 6PM to 8PM hours are the highest usage and if we made it through that time period we were good for another 24 hours.
Ours wasn't the only small hydro plant in the area but the only one that was high head and limited water amount. One other ranch that had a wheel that had been installed long ago enough to have used wooden pipe. This was definitely a low head machine as wooden pipe would never take the pressure that our steel pipe one could.
After we installed this system it opened up the possibility for some others in the area and we helped with their design.
After almost ten years of continuous use the incoming pipe started leaking a little so we shut it off and encased the 20 feet coming into the house in a large batch of cement. After uncovering the pipe we discovered that the leaks in the sreel pipe were the result of vibration and that only the welded joints were leaking. We left it off for a week after we poured the cement to let it cure because if we had turned on too soon the vibration might have pushed the cement away enough to continue the leaking.
The system was quite noisey right from the start and we thought it was the water hitting the wheel but after the cement was put in the machine was nearly silent. So what we were hearing was the vibrating inlet pipe.