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The mechanical energy input can be supplied by an electrical motor, or an internal combustion engine, for example. When the mechanical work for the heat pump is provided by a second Stirling engine, then the overall system is called a "heat-driven heatpump".
Peristaltic tube pump with two sprung rollers Peristaltic pump in motion. A peristaltic pump, also commonly known as a roller pump, is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained in a flexible tube fitted inside a circular pump casing.
The inchworm motor uses piezoelectric ceramics to push a stator using a walking-type motion. These piezoelectric motors use three groups of crystals—two 'locking', and one 'motive' that permanently connects to either the motor's casing or stator (not both). The motive group, sandwiched between the other two, provides the motion.
Small synchronous motor with integral stepdown gear from a microwave oven A synchronous electric motor is an AC electric motor in which, at steady state , [ 1 ] the rotation of the shaft is synchronized with the frequency of the supply current ; the rotation period is exactly equal to an integer number of AC cycles.
A means had to be provided, of course, to put the initial charge of water into the boiler (before steam power was available to operate the steam-powered feedwater pump). The pump was often a positive displacement pump that had steam valves and cylinders at one end and feedwater cylinders at the other end; no crankshaft was required.
Oil Well Pump Motors – Severe Duty Motors – Pool Pump Motors – One of the quietest motor pump on the market, due to its permanent magnet motor and TEFC design; Compare to the ODP (Open Drip Proof) motor design, which has ventilation openings which are guarded to prevent falling water from entering the motor windings.
Variable Speed Fire Pump Controllers were invented and released with a UL Listing for fire pump service in 2003 by Master Control Systems, Inc. [1] [2] Paragraph 10.5.5 in the 2003 edition of NFPA-20 recognized Variable Speed as an accepted method for operating the fire pump. Then in the NFPA-20 2007 edition, section 10.10 was added to clarify ...
The single-cylinder pump is suitable for bulk materials with an awkward coarse composition - for example wood chips, organic waste, hazardous waste, or shredded paper. If such unsaturated material is to be conveyed over large distances, one possible approach is the hybrid feed system. Here compressed air is injected into the delivery line.