enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Circulator pump - Wikipedia

    en.wikipedia.org/wiki/Circulator_pump

    These are called the pump curves. They are determined by studies, whose methodology is standardized. These curves are specified when water is pumped with a density of 1000 kg/m3 and kinematic viscosity of 1 mm2/s. When the circulating pump is used for liquids of different density and viscosity, the pump curves have to be recalculated.

  3. Reciprocating pump - Wikipedia

    en.wikipedia.org/wiki/Reciprocating_pump

    Reciprocating pump has wide application and to clear the basic idea it is necessary to know the basic parts. The basic parts along with its function; Water reservoir - it is not a part of reciprocating pump, however, it is the main source where from the reciprocating pump takes the water. It may be a source of other fluid as well.

  4. Air lock - Wikipedia

    en.wikipedia.org/wiki/Air_lock

    Air lock problems often occur when one is trying to recommission a system after it has been deliberately (for servicing) or accidentally emptied. Take, for example, a central heating system using a circulating pump to pump water through radiators. When filling such a system, air is trapped in the radiators. This air has to be vented using screw ...

  5. Forced circulation boiler - Wikipedia

    en.wikipedia.org/wiki/Forced_circulation_boiler

    This is due to the electrical requirements of the pump forcing circulation and the amount of water being circulated through the tubes. [ 6 ] The additional parts required; steam drum, circulation pump, and orifices to limit flow, cause a forced circulation boiler to lead to increased cost as well as increased opportunities for failure which ...

  6. Eddy (fluid dynamics) - Wikipedia

    en.wikipedia.org/wiki/Eddy_(fluid_dynamics)

    This can occur around cylinders and spheres, for any fluid, cylinder size and fluid speed, provided that the flow has a Reynolds number in the range ~40 to ~1000. [ 1 ] In fluid dynamics , an eddy is the swirling of a fluid and the reverse current created when the fluid is in a turbulent flow regime. [ 2 ]

  7. Flow separation - Wikipedia

    en.wikipedia.org/wiki/Flow_separation

    The fluid exerts a constant pressure on the surface once it has separated instead of a continually increasing pressure if still attached. [4] In aerodynamics , flow separation results in reduced lift and increased pressure drag , caused by the pressure differential between the front and rear surfaces of the object.

  8. Venturi effect - Wikipedia

    en.wikipedia.org/wiki/Venturi_effect

    If a pump forces the liquid through a tube connected to a system consisting of a Venturi to increase the liquid speed (the diameter decreases), a short piece of tube with a small hole in it, and last a Venturi that decreases speed (so the pipe gets wider again), the gas will be sucked in through the small hole because of changes in pressure.

  9. Air-mixing plenum - Wikipedia

    en.wikipedia.org/wiki/Air-mixing_plenum

    Air streams are mixed to save energy and improve energy efficiency by partially recirculating conditioned air.. The most common application for an air-mixing plenum is the mixing of return air (or extract air) with fresh air to provide a supply air mixture for onward distribution to the building or area which the ventilation system is serving. [1]