enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Flow coefficient - Wikipedia

    en.wikipedia.org/wiki/Flow_coefficient

    A simplified version of the definition is: The k v factor of a valve indicates "The water flow in m 3 /h, at a pressure drop across the valve of 1 kgf/cm 2 when the valve is completely open. The complete definition also says that the flow medium must have a density of 1000 kg/m 3 and a kinematic viscosity of 10 −6 m 2 /s , e.g. water.

  3. Heat capacity ratio - Wikipedia

    en.wikipedia.org/wiki/Heat_capacity_ratio

    Values based on approximations (particularly C P − C V = nR) are in many cases not sufficiently accurate for practical engineering calculations, such as flow rates through pipes and valves at moderate to high pressures. An experimental value should be used rather than one based on this approximation, where possible.

  4. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    The "CV4000" numbers identify special-quality valves though SQ valves CV numbered before that rule came in retain their original CV number: CV4007 = E91AA – SQ version of 6AL5; CV4010 = E95F – SQ version of 6AK5 or EF95; CV4014 = M8083; The "M8" in the part number denotes that it was developed by the military:

  5. Control valve - Wikipedia

    en.wikipedia.org/wiki/Control_valve

    A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller. [1] This enables the direct control of flow rate and the consequential control of process quantities such as pressure, temperature, and liquid level.

  6. Table of specific heat capacities - Wikipedia

    en.wikipedia.org/wiki/Table_of_specific_heat...

    Note that the especially high molar values, as for paraffin, gasoline, water and ammonia, result from calculating specific heats in terms of moles of molecules. If specific heat is expressed per mole of atoms for these substances, none of the constant-volume values exceed, to any large extent, the theoretical Dulong–Petit limit of 25 J⋅mol ...

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Watchdog warns credit card companies over devaluing ... - AOL

    www.aol.com/watchdog-warns-credit-card-companies...

    The Consumer Financial Protection Bureau (CFPB) on Wednesday warned that credit card companies devaluing or canceling reward points, cash back or miles rewards programs may be breaking the law.

  9. Surge control - Wikipedia

    en.wikipedia.org/wiki/Surge_control

    That means that the valve will remain open until the process pressure decreases to 20% below the set point of the spring-loaded relief valve. Advantages: Opens 100% when set point is reached. Easy to install and maintain. High flow capacity or Cv value in gas service. Disadvantages: Has a blow down factor inherent to the design of the valve.