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Grundfos (Danish pronunciation: [ˈkʁɔnfʌs]) is the largest pump manufacturer in the world, based in Denmark, with more than 19,000 employees globally.. The annual production of more than 16 million pump units, circulator pumps (UP), submersible pumps (SP), and centrifugal pumps (CR).
Pump curves are quite useful in the pump selection, testing, operation and maintenance. Pump performance curve is a graph of differential head against the operating flow rate. They specify performance and efficiency characteristics. Performance tests are done on the pumps to verify the claims made by the pump maker.
A hydraulic ram pump, ram pump, or hydram is a cyclic water pump powered by hydropower. It takes in water at one " hydraulic head " (pressure) and flow rate, and outputs water at a higher hydraulic head and lower flow rate.
illustrated parts catalog (e.g. by Boeing, Airbus) IR initial release IRS inertial reference system: IRT instrument rating test: IRU inertial reference unit: IRVR instrumented runway visual range: ISA International Standard Atmosphere: ISFD integrated standby flight display: ISIS integrated standby instrument system: ISP integrated switching ...
With the Catalog opened flat, the reader might find the large page on the left full of text and intriguing illustrations from a volume of Joseph Needham's Science and Civilization in China, showing and explaining an astronomical clock tower or a chain-pump windmill, while on the right-hand page are a review of a beginners' guide to modern ...
Despite these early examples, Dr. Ernst Friedrich "Fritz" Schumacher is credited as the founder of the appropriate technology movement. A well-known economist, Schumacher worked for the British National Coal Board for more than 20 years, where he blamed the size of the industry's operations for its uncaring response to the harm black-lung disease inflicted on the miners. [3]