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A horsepower-hour (symbol: hp⋅h) is an outdated unit of energy, not used in the International System of Units. The unit represents an amount of work a horse is supposed capable of delivering during an hour (1 horsepower integrated over a time interval of an hour).
Two common definitions used today are the imperial horsepower as in "hp" or "bhp" which is about 745.7 watts, and the metric horsepower as in "cv" or "PS" which is approximately 735.5 watts. The electric horsepower "hpE" is exactly 746 watts, while the boiler horsepower is 9809.5 or 9811 watts, depending on the exact year.
The henry (symbol: H) is the unit of electrical inductance in the International System of Units (SI). [1] If a current of 1 ampere flowing through a coil produces flux linkage of 1 weber turn, that coil has a self-inductance of 1 henry. The unit is named after Joseph Henry (1797–1878), the American scientist who discovered electromagnetic induction independently of and at about the same ...
Also known as h-s diagram. T-s chart: Max cap Maximum capacity. One of three modes describing the configuration of the unit around full load Usually achieved by taking the HP heaters out of service, so that the bled steam that normally goes to these heaters now passes through the turbine.
A railway locomotive with a diesel engine, generator, and electric driving motors that can be powered by the diesel engine or the track electrical supply. electrodynamics The branch of physics that studies electrical charges and electrical currents. electrolyte A liquid or solid medium that carries electric current in the form of ions ...
EPSA—Electric Power Supply Association; EQR—Electric Quarterly Report; ERA—Economic Regulatory Administration (part of United States Department of Energy; ERCOT—Electric Reliability Council of Texas, Inc, a regional transmission organization. (US) ERGEG—European Regulators Group for Electricity and Gas; ERIS—Energy Resource ...
Electricity is hard to store, so at any moment the supply (generation) shall be balanced with demand ("grid balancing"). In an electrical grid the task of real-time balancing is performed by a regional-based control center, run by an electric utility in the traditional ( vertically integrated ) electricity market.
Engine power is the power that an engine can put out. It can be expressed in power units, most commonly kilowatt, pferdestärke (metric horsepower), or horsepower.In terms of internal combustion engines, the engine power usually describes the rated power, which is a power output that the engine can maintain over a long period of time according to a certain testing method, for example ISO 1585.