Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Electric battery wikipedia , lookup
Opto-isolator wikipedia , lookup
Voltage optimisation wikipedia , lookup
Alternating current wikipedia , lookup
History of electric power transmission wikipedia , lookup
Electrification wikipedia , lookup
Mains electricity wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Voltage regulator wikipedia , lookup
Aquair UnderWater An effective way to produce hydroelectric power The AQUAIR UW Submersible Generator is a permanent-magnet low-speed high-output alternator sealed in an oil-lled waterproof housing. It is ideally suited for use as an alternative power source for remote cabins, small equipment and communications, as well as for residential power. One or more of these units can supply a sufcient amount of sustained electricity for critical residential systems when connected to storage batteries and an inverter. It was originally developed for use aboard seismic sleds which are towed behind oil exploration vessels. Unlike other micro-hydro units where head, ow and nozzle pressure are factors this unit simply requires a owing stream, creek, river or sea, and simply gets lowered into the water. The AQUAIR UW is solidly constructed from heavy aluminum castings. The top-grade aluminum propeller (impeller) is connected to the shaft with a stainless steel cap screw. It can be quickly and easily hammered back into shape if necessary. Mounting the Aquair UW can be left to your ingenuity, but a few guidelines are in order. Mount the AQUAIR in smoothly-owing fast water near the bank or in a side ow where tree boles and debris cause less of a danger. Provide an upstream diversion that sweeps big stuff aside. You don’t need a screen, since small debris can’t hurt the generator. Make your overhead supporting structure very strong since downstream forces are unexpectedly powerful. If the stream is subject to heavy spates due to seasonal run-off or heavy rains upstream, you should provide a way to raise the generator safely above the new water level. If your home is on the sea or near a tideway, the AQUAIR UW is also ideal for you. Its alternator produces electricity no matter which way the current is owing. Under ideal conditions, the AQUAIR UW puts out 8.3 Amps at 12 Volts DC, 200 Amp-Hours (AH) per day (2.4 kWh) with a stream speed of 9 m.p.h. At 6 m.p.h. it will still produce 1.5 kWh per day. This electricity must be stored in deep-cycle batteries that are at least double the capacity source. High sustained outputs as in the AQUAIR UW system require regulation to protect your batteries. Use an effective voltage regulator to prevent overcharging just like with solar or wind powered systems. A minimum 25 amp regulator is required. See below. 2.4 Kilowatts is almost 1/4 the power used by a typical suburban home. In a wilderness home it can provide a good deal of comfort with a little bit of care. Standard Options • Voltage Regulator/Isolator • Spare propeller • Heavy duty mounting pole to raise/lower unit Other Options: • Shrouded propeller • Low RPM propeller • Propeller guard Technical Information The Aquair UW is approximately 14 1/2 “ from nose to tail and 8 3/8 “ in diameter. 8mm mounting bolts are spaced 1.75” on centers. Propeller diameter is 12 1/2”. Complete weight 22 lbs Propeller weight 2.2 lbs The forward facing 3 beaded propeller drives a permanent magnet alternator producing up to 8 Amps output current for a 12 volt system. The shaft rotates in double seals for optimum protection, backed by twin ‘O’ ring static seals at the rear of the casing. The cable exit is similarly double sealed by an internal moulding and external gland. This unit is well sealed and contains mineral oil, making it extremely environmentally safe. A transom mounted bracket is available for sailing yachts to provide a 3 position support for the generator. This bracket must be situated such that the lifting action on the generator caused by the thrust on the propeller will not allow the machine to surface. When required, the unit is raised above the surface of the water and stowed by a retaining mechanism. It can also be swung completely upside down to allow inspection and cleaning of the propeller and shaft. A simple shear pin guards the generator against impact on the propeller. The unit can also be mounted between hulls on catamarans. ELECTRICAL AQUAIR U.W. 13.2’ in length of 4-core cable connects to 2 external rectiers xed onto a heatsink which should be mounted in a suitably dry location near the battery. The output control switch and fuse are wired in the DC battery line. Any through-deck connector requires 4 individual contacts. The Aquair requires a charge controller. The standard option above is a voltage regulator rated at 25 amps, or you can use any 12/24v minimum 25 amp charge regulator like a Trace C-40. This simply, but importantly prevents over-charging your batteries since the unit produces sustained high output. Aquair UW Technical Drawings All dimesions in millimeters 25.40 mm = One inch Aquair comes with standard propeller - other items shown are optional. Optional Mounting Pole shown above is one meter in length. Key to Sectioned Drawing 1. Body Casting 2. Stator Spacer 3. Stator Winding 4. Cable Gland 5. Output Cable, 4 metres 4 core 1.5 sq. mm cores 6. Permanent Magnet Rotor 7. Front Bearing, 17 x 40 x 12mm Type 6203 8. Internal Circlip, 40 x 1.75mm 9. Shaft Seal, rubber plain lip, 17 x 40 x 7mm (3 required) & cover washer 10. Shaft, stainless steel, grade 316 11. Propeller Bush stainless steel 12. Propeller Fastener M8 x 30mm grade A4 stainless steel cap screw complete with M8 shakeproof washer 13. 3 Blade propeller casting 14. Base Mounting Lug, M8 clearance hole 15. Rear Bearing, 15 x 35 x 11mm Type 6202 16. “O” Ring Retaining Plate 17. “O” Ring, metric size 351 18. Oil Reservoir, Nitrile (synthetic rubber) moulding 19. Plastic Reservoir Attachment 20. Oil Filler Screw, M8 x 12mm 21. Water Seal “O” Ring, Metric size 351 22. Helicoil, M6 x 15mm stainless steel (3 required) 23. Hemisphere Casting 24. Hemisphere Fastener, M6 x 25mm stainless steel grade A4 & Shakeproof washer (3 of each required) Cable seal components, not shown a. Threaded sleeve b. Feed-through seal body c. Feed through seal "O" ring size 614