Glossary of Terms


Actuator A mechanical, pneumatic, hydraulic or electrical device that performs a mechanical motion in response to an input signal, which may be electric of fluidic.
Attenuator A device used to reduce the level of the signal strength in a system without introducing appreciable distortion. This can be a resistor network or a control on a piece of equipment.
Bushing A cylindrical shaped insulator that insulates the conductor and permits carrying current through a grounded barrier, such as a transformer tank, circuit breaker or builing wall.
Catalytic Converters A device that controls emissions by removing organic contaminants by oxidizing them into carbon dioxide and water through a chemical reaction. It can convert nitrogen dioxide to nitrogen and oxygen and other similar reactions. It is an air pollution abatement device.
Cathodic Protection A technique used to prevent corrosion of metal by making the metal a cathode.
CHP CHP stands for combined heat and power. CHP plants incorporate both power and heat from a single heat source. All congeneration systems are by definition CHP systems.
Cogeneration The production of electricity and useful thermal energy simultaniously from a common internal combustion engine. The rejected exhaust heat from our packaged gas turbine systems can be captured and used for industrial processes, or for heating and air conditioning, as well as water desalinization or water clean-up / polishing. in most applications gas turbine exhasut heat is captured through the use of an HRSG - heat recovery steam generator. the steam prodcued by the HRSG can be used for process or district heating, or sent to absorption chillers for air conditioning. Back end chiller can also be installed which utiize the thermal energy directly from our gas turbine exhaust gases.
Combined Heat and Power A technique of generation where electricity and heat is produced by means of a engine driven power station. The exhaust heat is then used to for other heating purposes or industrial processes. Combined heat and power is also known as 'cogeneration'.
Cooling Tower A structure for cooling liquid, usually water bybringing it in to contact with an airstream where a small proportion of the liquid/water evaporates.
Corrosion A deterioration process in which a metal surface is destroyed by a chemical reaction.
Damper A bladed device that controls and regulates air or engine exhaust flow through a ductwork system by their movable plates opening and closing. There are two types manual and motorized. KGTA utilizes damper systems as part of our CO2 fire supppression system. We also use dampers in our exhaust systems with HRSG units.
Expansion Joint A joint that is typically used in the inlet and exhaust sytems of our packaged gas turbine power plants. These joints allow for movement of either the inlet or exhaust ducting to accomodate thermal expansion and contractions of this hardware.
Gas Turbine Gas turbines are internal combustion engines that employ a continuous combustion process with hot gases sent to turbine sectionh that converts the energy of these hot compresses gases, produced by burning fuel in compressed air, in to mechanical power. Gas turbines are essentially modified jet engtines; Jet engines utilize an exhaust nozzle that produces thrust, while gas turbines utilize a power turbine section that produces torque. Kawasaki manufactures industrial heavy duty gas turbines which utilizes robust parts / components and casings to meet the higher demands of continuous full power industrial engine operation. Industrial engines typcically operate art full load most of the time, while flight jet engines, typically operate at only 70% cruise power during most of their engine life. The industrial gas turbine operating environment is the most severe operating environment , and our gas turbine engines are designed specifically to meet the demands of this operating environment.
Gearbox A set of cog wheels found in a gear box, containing a system of gears and an output shaft that reduces shaft output speed and multiplies engine torque. KGTA utilizes speed reduction gears between our gas turbine engines and the electric generator. Speed reduction designs are used to accomodate either 50 HZ or 60 Hz generators.
Generator A rotating electric machine which transfers mechanical torque energy into electrical power / energy. KGTA utilizes AC generators to prodcue either 50 Hz or 60 Hz power.
Genset Genset refers to an engine driven generator. All of our packaged gas turbine power plants are considered 'gen-sets'.
Muffler A device that is attached to the exhaust stck of the engine to reduce noise and increase back pressure which helps low speed performance.
Rotor A semicircle shaped piece of heavy metal that rotates and is part of a generator which contains electromagnets. Turning the rotor in the stator assembly causes electricity to be produced.
Silencer A static mechanical device used for reducing gas flow noise. Silencers are typically found in both the inlet and exahust of our gas turbine packages. The noise is reduced by tuned resonant control of gas expansion.
Switchgear A switching/ interrupting device used in connection with generation, transmission, distribution and conversion of electric power for controling, metering protecting and regulating devices. 52G breaker is the unit main power output breaker
Thermal Insulation A material that is used to reduce the flow of heat. Thermal blanket type insulation is typcially added to gas turbine exhaust duct work for worker safety and to provide heat reduction to engine room spaces.
Thermocouple An electrical device that is used for temperature measurement. It is made up from pair of dissimilar metal joined at two points making a continuous circuit. When one junction has a different temperature from the other an electromotive force (voltage) occurs that can be measured and calibrated to specific known temperatures. KGTA utilizes themocouples in the gas turbine exhaust to control engine firing temperature. thermocouples are also used ot monitor inlet air, turbine cna generator compartment temperatures, engine bearing temperatures, lube oil and fuel system tempertures.
Transformer An electrical device that transforms the voltage of alternating current (AC) electricity from one value to another through the use of copper winding ratios. Step up transformers increase Voltage and step down transformers decrease Voltage. Transformers can either be dry - air cooled or oil bathed in a containment tank. Transformers can also be used to isolated portions of a circuits from others.

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