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FLOW NOZZLES. INTRODUCTION. It’s a venturimeter without it diverging cone. Principle behind flow nozzles is same as in case of orificemeter and venturimeter – Bernoulli\'s principle. Made of generally gun metal, stainless steel or monel metal. Flow Meters. Orifice Meters Venturi Meters

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Presentation Transcript
introduction
INTRODUCTION
  • It’s a venturimeter without it diverging cone.
  • Principle behind flow nozzles is same as in case of orificemeter and venturimeter – Bernoulli\'s principle.
  • Made of generally gun metal, stainless steel or monel metal.
flow meters
Flow Meters
  • Orifice Meters
  • Venturi Meters
  • Flow Nozzles
flow through a nozzle
Flow through a Nozzle

Basic Equations:

a.) Continuity:

mass in = mass out

b.) Bernoulli’s Eqn.

Total energy/ pressure is constant throughout

advantages
ADVANTAGES
  • Higher coefficient of discharge than orificemeter
  • Cheaper and easier to install
  • Physical length is less compared to venturimeter
  • Useful for flow measurement containing solid particles
disadvantages
DISADVANTAGES
  • Expensive and difficult to install than orificemeter
  • Poor pressure recovery
  • Limited moderate pipe size
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