Regulator Controller
March 3rd, 2010 | 
Author: Regulator Controller
Ebay listings for Regulator Controller products.
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Solar Regulator Charge controller 40A LCD 12/24V PWM $851.99 |
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Hybrid Wind Solar Charge Controller 1000W Regulator, 24V, wind charge controller $349.99 |
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10 Bottles 110 ML each Nyguard Insect Growth Regulator IGR Flea Roach Control $439.95 |
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Hybrid Wind Solar Charge Controller 1000W, 48V, wind charge controller regulator $339.99 |
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120W mono solar panel 12V battery system + 10a solar controller regulator $372.99 |
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MPPT Solar Regulator 40A, 12/24v, with remote meter, solar charge controller $289.99 |
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MPPT Solar Regulator 40A, 12/24v, with remote meter, solar charge controller $289.99 |
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MPPT Solar Regulator 40A, 12/24v, with remote meter, solar charge controller $289.99 |
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MPPT Solar Regulator 40A, 12/24v, with remote meter, solar charge controller $284.47 |
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100W Monocrystalline Solar panel 12V DC battery + 10a solar controller regulator $313.99 |
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digigro Controller and Regulator Complete Co2 Package $299.00 |
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ECOTECHNICS UNIS CO2 CONTROLLER AND REGULATOR – NEW $260.65 |
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NEW HTC Humidity Temperature CO2 Controller 1000 watt HPS Grow room Light cap mh $299.00 |
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45A MPPT Solar Charge Controller Regulator 12V 24V 4215RN 150V INPUT 40A W Meter $299.00 |
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ECOTECHNICS UNIS CO2 CONTROLLER AND REGULATOR – NEW FREE P+P $260.65 |
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MPPT Solar Regulator 40A, 12/24v, auto sensing, Solar Charge Controller, NEW $239.99 |
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40A MPPT Solar Charge Controller Regulator 12V 24V TRACER 4215 150V INPUT 40A $238.99 |
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40A MPPT Solar Charge Controller Regulator 12V 24V TRACER 4215 150V INPUT 40A $275.00 |
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45Amp MPPT Solar Charge Controller Regulator 12V 24V Solar system 100V max input $272.00 |
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440 AMP 12v/24v/48v Solar/Wind Regulator Controller HV $255.00 |
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440 A AMP 12v/24v/48v Solar/Wind/Hydro Regulator Diversion Controller HVM $255.00 |
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440 AMP 12v/24v/48v Solar/Wind Regulator Controller HV $255.00 |
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80W 17.5V Monocrystalline Solar panel for 12v battery+10a controller regulator $267.99 |
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MPPT Solar Regulator 20A, 12/24v, with remote meter, solar charge controller $199.99 |
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MPPT Solar Regulator 20A, 12/24v, with remote meter, solar charge controller $199.99 |
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MPPT Solar Regulator 20A, 12/24v, with remote meter, solar charge controller $199.99 |
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30A MPPT Solar Charge Controller Regulator 12V 24V 3215RN 150V INPUT 30A W Meter $234.99 |
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48V 30A Solar Panel Charge Battery Controller Regulator $199.99 |
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440 AMP 10,000 WATT Solar/Wind Regulator Controller XL $215.00 |
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Hybrid Solar Wind Charge Controller 600W+200W, wind regulator, with LCD monitor $179.99 |
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100% ture MPPT 30A 24V JUTA Solar Controller/Regulator $122.00 |
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30A MPPT Solar Charge Controller Regulator 12V 24V TRACER 3215 150V INPUT 30A $218.00 |
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30A MPPT Solar Charge Controller Regulator 12V 24V TRACER 3215 150V INPUT 30A $209.00 |
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60W Mono Solar panel 12V DC battery charger + 5a 12v solar controller regulator $208.99 |
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ATD-7866 5 Micron/100 SCFM Air Control Unit with 6 1/4” Outlets – 4 Regulated $202.08 |
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2400w solar panel regulator charge controller 48v-50a $199.99 |
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MPPT Solar Regulator 20A, 12/24v, auto sensing, Solar Charge Controller, NEW $159.99 |
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50A 48V 2500W Solar Panel Charge Controller Regulator $100.00 |
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MPPT Solar Regulator 20A, 12/24v, auto sensing, Solar Charge Controller, NEW $156.95 |
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600W wind solar hybrid charge controller inverter PWM CE2 12V OR 24V Regulator $189.99 |
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Solar Battery Charge Controller/Regulator for Panel 12v $188.95 |
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Hybrid Wind Solar Charge Controller 400W Regulator, 12V, wind charge controller $178.19 |
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MPPT 50A Solar Power Controller Regulator Converter 10-30% Power Boost 12/24V $179.99 |
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Hybrid Wind Solar Charge Controller 600W Regulator, 48V, wind charge controller $139.99 |
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Solar Battery Charge Controller/Regulator for Panel 12v $178.95 |
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40W Solar panel for 12v battery charger +5a controller regulator UL TUV $175.99 |
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50A 24V solar panel regulator charge controller,1200W $170.00 |
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Hybrid Solar Wind Charge Controller 500W+100W, wind charge controller, regulator $129.99 |
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Hybrid Wind Solar Charge Controller 300W, 12V, wind charge controller, regulator $139.99 |
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Hybrid Wind Solar Charge Controller 600W Regulator, 24V $139.99 |
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20A 24V Solar MPPT Panel Regulator Charger Controller $133.99 |
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20A MPPT Solar Charge Controller Regulator 12V 24V 2215RN 150V INPUT 20A W Meter $154.00 |
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Solar Battery Charge Controller/Regulator for Panel 12v $167.95 |
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Hybrid Wind Solar Charge Controller 400W Regulator, 12V, wind charge controller $164.99 |
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ATD-7865 5 Micron/50 SCFM Air Control Unit with 4 1/4” Outlets – 2 Regulated $162.48 |
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Bayou Classic 36 Inch Stainless Steel Hose / 20 PSI Regulator Control Valve $159.99 |
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Titan Controls Grow Room CO2 Regulator $159.95 |
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Solar DIY Panel Super Kit- Cell, Junction Box+Regulator $159.95 |
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Titan Controls Co2 Regulator $149.95 |
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Hybrid Wind Generator Solar Charge Controller 600W 24V Regulator PWM CE LCD $58.00 |
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Single phase Hybrid Wind Generator Solar Charge Controller 600W 24V Regulator -2 $58.00 |
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Ramsond New 50 Watt 50W W Solar Panel Charger Charge Controller Regulator RV Kit $154.99 |
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Solar Battery Charge Controller/Regulator for Panel 12v $154.95 |
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25A MPPT 12V Solar Charge Controller Regulator LCD Display régulateur panel $127.83 |
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Solar Regulator Charge controller 50A LCD screen 12/24V, solar regulator, new $148.49 |
Regulator Controller products on Amazon:
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T-fal BF6520003 Vitesses 1.7-Liter 7-Cup Electric Kettle, White $69.99 1 7 Liter Vitesse S Kettle with Temperature Select- The new Vitesse S Kettle allows you to easily select the temperature of your beverage The T-Fal Vitesse S kettle has an ingenious Variable Temperature Selector feature allowing you to pre-select the ideal temperature for your drink However its not just tea and coffee that benefit from this new feature This feature also gives you a faster warm up … |
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Johnson Controls A19AAT-2C Freezer Temperature Controller $48.50 Use this handy controller to regulate the temperature in your freezer between 20 – 80F . Great for turning a chest freezer into a keg refrigerator. Strictly a mechanical thermostat for cooling only, it is simple to use and economical. It operates with a gas filled probe on a 6-foot capillary tube. When the gas contracts or expands in the probe, it triggers a mechanical device inside the control wh… |
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Adagio Teas 3 UtiliTEA Variable-Temperature 30-Ounce Electric Kettle $49.99 Green tea lovers no longer have to struggle to achieve the optimal steeping temperature, while darker tea drinkers can still expect impeccably boiling water. With an innovative temperature control system, this versatile device can heat to your preference. At last, an all-inclusive kettle for heating water for the perfect pot of tea. This durable stainless steel kettle is a must-have for tea lovers… |
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Belkin Conserve Switch, Energy-Saving Surge with Remote $37.34 Belkin F7C01008Q Surge Suppressor F7C01008Q Surge Suppressors… |
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APC LE1200 Line-R 1200VA Automatic Voltage Regulator $44.66 The Line-R is a microprocessor controlled tap changing power conditioner which automatically corrects brownouts and overvoltages and stabilizes chronic line voltage variation. Line-R also provides multi-stage surge suppression and full-time EMI/RFI filters to handle all the problems your equipment is likely to face. A voltage meter on the Line-R’s front panel displays the relative input voltage le… |
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Virtuabotix Bareduino Plus- Arduino Compatible Breadboard Microcontroller with Power Regulator $8.95 Need lots of Arduino compatible controllers, but don’t need the price tag that comes with a full development platform? This handy little kit is perfect for anyone who is experienced with the Arduino platform, and needs to include a lot more of them in his/her next project. Make a project on a breadboard, tie as many ATMEGA328’s together as you need to. The sky is the limit, and you don’t have to b… |
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Sunforce 7 Amp Charge Controller $17.41 The Sunforce 60012 7 Amp Charge Controller prevents overcharging of 12-volt batteries. It is intended for use with 12-volt solar panels, and can handle up to 7 amps of array current and up to 100 watts of solar power. The controller is easy to use with a charging light that indicates that your battery is charging, and a green light that indicates a fully charged battery. The 60012 measures 4 x 1 x… |
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Sunforce 50033 15-Watt Solar Charging Kit $94.95 Works with Automobiles/Boats/Tractors/ATVs/Electric Fences/Deer Feeders/Telemetry and More. Maintenance Free / Easy Installation. Pre Cut Holes for Easy Installation. 4 Stainless Steel Screws. Battery Clamps. CLA Adapter. 12ft Wire. 7 Amp Charge Controller. Works in All Weather Conditions. Ultra Bright Blue LED Provides Charging Indication. Built-in Blocking Diode Protects Battery Discha… |
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Wand Massager Speed Controller for Hitachi Wand $14.87 This speed control box allows you to perfectly adjust the speed of the Hitachi magic wand to the level best for you. Previously users were limited to two speeds. Now the possibilities are endless. It even works with other similarly limited plug-in vibrators. If that was not good enough, it also acts as a 6 foot extension cord, so you can dial up the perfect speed farther from the nearest electrica… |
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D’Addario EJ45 Humididpack Classical Guitar Strings $0.01 … |
Biogas Generator Benefits From Precision Pressure Control
Many wastewater treatment plants use anaerobic digestion to process their biological solid wastes, reducing landfill volumes and generating valuable electricity in the process. Controlling the biogas pressure that feeds the combustion engine is critical, especially because the flow rate coming out of the digester fluctuates. Precision back pressure regulators has been successfully used to effectively control the biogas pressure at 4 psig while circulating excess gas back to the digester for reuse.
About Anaerobic Digesters
Anaerobic digestion (AD) is a biological process in which biodegradable organic matters are broken-down by bacteria into biogas, which consists of methane (CH4), carbon dioxide (CO2), and other trace amount of gases. The biogas can be used to generate heat and electricity. The primary requirement for AD is an oxygen free environment. Other important factors, such as temperature, moisture and nutrient contents, and pH are also critical for the success of AD. Electricity can be generated on-site using a reciprocating engine, steam turbine, or gas turbine. When a reciprocating engine is used, the biogas must have condensate and particulates removed. (Source: California Energy Commission)
Anaerobic Digesters provide numerous advantages, including:
- Replacement of fossil fuels.
- Reducing or eliminating the energy footprint of waste treatment plants.
- Reducing methane emissions.
- Displacing industrially produced chemical fertilizers.
- Reducing trucking and related emissions.
- Reducing electrical grid transportation losses by generating electricity onsite.
- Reducing the volume of solid waste disposal and related costs.
- Simple and reliable systems
- Odors contained and eliminated
- Reduced operating cost
Gloversville-Johnstown’s 350KW Plant
The Gloversville-Johnstown Waste Water plant in upstate Johnstown NY, serves 25,000 residential customers, as well as 30 industrial and commercial customers. Methane from the anaerobic digester is used to fuel two 350KW Caterpillar gas engines driving generators to produce electricity, which is utilized to operate the facility. The plant processes 6 million gallons of sewage per day, and 100,000 gallons of waste is treated each day by the digesters.
In the original design, a traditional mechanical relief valve was used to control the methane pressure. This valve is designed as a safety rather than as pressure control device in that the spring that controls the relief pressure allows the valve to open completely at very little over pressure. Such a valve is necessary for the protection of the system components and safety of the plant’s personnel; however, the relief valve does not lend itself to precisely regulating the gas pressure. As a result the engines did not receive a constant pressure fuel supply and the engine rpm began to surge, something not desirable in a generator application.
A schematic depicts the original system without the gas refinement and filtering devices.
Search for precision low pressure regulator
George Bevington, the plant manager, began a search for a more precise methane pressure control strategy by contacting experts in the field of back pressure control that could configure, fabricate, assemble and ship within 10 days to complete the installation while the facility’s subcontractor crew was still on site.
Back pressure regulators work similarly to relief valves, but the emphasis is on steady state pressure control instead of on/off pressure protection.They needed back pressure regulator that uses only a frictionless flexible membrane to modulate the pressure. The inlet pressure of spring controlled back pressure regulators vary significantly with changes in process flow. In this installation, the set point is determined by a small manually operated pilot regulator (not shown) supplied with filtered shop air. The controlled pressure is in the 4 psig range. This can be adjusted to achieve optimum performance from the engine-generator system.
Stable performance
The installation of the precision back pressure regulator in parallel with the safety relief valve provided more accurate pressure control in the range required by the engines. The quick acting safety relief valve only comes into play in rare instances of excess pressure above a new higher set point. With the system pressure now smoothly controlled by the regulator and only the over pressure relief function assigned to relief valve, the pressure reducing regulators on each engine are not necessary. However, they were left in the system to avoid repiping.
Results
Tests have shown that the system can be smoothly throttled up and down the load range including taking one engine off line or running both engines wide open (700KW) with no loss of methane pressure or engine Speed Control.
Per George Bevington “In order to properly operate a gas compression system for anaerobic digester fueled engines, a precision back pressure regulator is needed to precisely modulate the gas pressure”.
Refining the concept for other installations:
Several changes could be made in a new installation, such as piping the relief valve exhaust to atmosphere or a flare to meet local codes. Also, the pressure reducing regulator on the gas inlet of the engine can be eliminated, simplifying the installation. With those changes the piping schematic would look like this illustration.
Conclusion:
Precision back pressure control offers a better solution to anaerobic digester gas pressure control than alternative means of controlling the pressure of biogas.
About the Author
Dave Lowles is a former executive in the semiconductor fluid controls industry. He is a consultant for Equilibar, LLC in Fletcher, NC. Learn more about
precision back pressure regulation
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