User:Ddwoody/Electrode boilers

Electrode Boiler

Electrode boilers (jet type) use electricity flowing through steams of water to create steam. The most common type of electrode boiler pumps water from the lower part of the vessel to an internal header that has nozzles that allow the water to flow to electrodes. The electrodes are connected to a high voltage source (typically 6,600 volts to 13,800 volts). The electrode boiler is 99.9% efficient with almost all the energy consumed producing steam.

The conductivity of the water and voltage determine how much steam is generated in each stream of water. If more pressure is needed (more steam) the controls speed up the pump and flow more water thru additional nozzles. As the needed pressure is reached the pump controls the flow of water to obtain the desired steam output (in lbs per hour) at the desired pressure.

PLC controls with a touchscreen is the typical user interface on the best electrode boiler systems. The pump is controlled by a VFD (Variable Frequency Device) so energy is not wasted. This control system can seamlessly control deaerator pumps and controls.

The electrode boiler manufacturer with the largest installed base in the United States is Precision Boilers, Inc. They also have the largest installed base in the Chinese nuclear power plant arena with their auxillary boilers.

Their website is www.precisionboilers.com

Other electrode boiler websites or information on electrode boilers can be found at:

www.electrodeboilers.com

http://www.alabamapower.com/architect/technical_library/lib_sheat_ElectrodeBoil.asp

www.peregrinecorp.net/UserFiles/CaseStudies/60/FullCaseStudy.pdf

http://www.duke-energy.com/pdfs/AndersonAreaMedical.pdf

http://www.winthrop.edu/uploadedFiles/relations/publications/fyi/2006-11-15.pdf?n=9603