pump efficiency

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• Heat pump efficiency —   The efficiency of a heat pump, that is, the electrical energy to operate it, is directly related to temperatures between which it operates. Geothermal heat pumps are more efficient than conventional heat pumps or air conditioners that use the… …   Energy terms

• pump — pump1 pumpable, adj. pumpless, adj. pumplike, adj. /pump/, n. 1. an apparatus or machine for raising, driving, exhausting, or compressing fluids or gases by means of a piston, plunger, or set of rotating vanes. 2. Engin., Building Trades. a shore …   Universalium

• Pump-jet — A pump jet or water jet is a marine system that creates a jet of water for propulsion. The mechanical arrangement may be a ducted propeller with nozzle, or a centrifugal pump and nozzle. The first functioning pump jet engine was created by New… …   Wikipedia

• pump priming — /pʌmp ˈpraɪmɪŋ/ (say pump pruyming) noun 1. the procedure of filling a pump with fluid so as to expel air and increase its starting efficiency. 2. government action aimed at stimulating an economic recovery, as by increasing expenditure and… …  

• Geothermal heat pump — A geothermal heat pump system is a heating and/or an air conditioning system that uses the Earth s ability to store heat in the ground and water thermal masses. These systems operate based on the stability of underground temperatures: the ground… …   Wikipedia

• Centrifugal pump — Warman centrifugal pump in a coal preparation plant application A centrifugal pump is a rotodynamic pump that uses a rotating impeller to create flow by the addition of energy to a fluid. Centrifugal pumps are commonly used to move liquids… …   Wikipedia

• Heat pump — A heat pump is a machine or device that moves heat from one location (the source ) to another location (the sink or heat sink ), using work. Most heat pump technology moves heat from a low temperature heat source to a higher temperature heat sink …   Wikipedia

• Hydraulic pump — A Hydraulic is used in hydraulic drive systems.Hydraulic pumps can be hydrostatic or hydrodynamic.Hydrostatic pumps are positive displacement pumps.Hydrostatic pumps can be fixed displacement pumps, in which the displacement (flow through the… …   Wikipedia

• Seasonal energy efficiency ratio — The efficiency of air conditioners is often rated by the Seasonal Energy Efficiency Ratio (SEER) which is defined by the [Air Conditioning, Heating, and Refrigeration Institute] in its standard ARI 210=240, Performance Rating of Unitary Air… …   Wikipedia

• Slope efficiency — The slope efficiency is an important property of a laser. It is obtained by plotting the laser output power against the input pump power. Above the lasing threshold, the resulting curve is usually close to a straight line. The slope efficiency is …   Wikipedia

• Thermal efficiency — In thermodynamics, the thermal efficiency (eta {th} ,) is a dimensionless performance measure of a thermal device such as an internal combustion engine, a boiler, or a furnace, for example. The input, Q {in} ,, to the device is heat, or the heat… …   Wikipedia