## What is coefficient of discharge of orifice meter?

Explanation: Coefficient of discharge (Cd): It is the ratio of actual discharge to theoretical discharge. As in a pipe, frictional losses are present therefore Qactual will always be less than Qtheoretical.

## What is discharge coefficient of orifice plate?

The discharge coefficient is a dimensionless number used to characterise the flow and pressure loss behaviour of nozzles and orifices in fluid systems. Orifices and nozzles are typically used to deliberately reduce pressure, restrict flow or to measure flow rate.

**How is orifice coefficient calculated?**

The discharge coefficient of an orifice or nozzle is defined as the ratio of the actual to theoretical flow rate:

- Cd=Measured Flow RateTheoretical Flow Rate (1)
- η=σΔp12ρ¯V2 (6)
- ξ=σΔp¯Δp (7)

### What does the coefficient of discharge tell you?

In a nozzle or other constriction, the discharge coefficient (also known as coefficient of discharge or efflux coefficient) is the ratio of the actual discharge to the ideal discharge, i.e., the ratio of the mass flow rate at the discharge end of the nozzle to that of an ideal nozzle which expands an identical working …

### What is the range of coefficient of discharge of Venturimeter?

0.61 to 0.79

The range for coefficient of discharge (Cd) for a venturimeter is. 0.61 to 0.79.

**Can coefficient of discharge be greater than 1?**

In practice, the discharge coefficient cannot be greater than one.

#### What is the range of coefficient of discharge?

0.61 to 0.79.

#### Why discharge coefficient is high in Venturi meter than orifice meter?

In Venturi meter losses are less so coefficient of discharge is higher whereas in orifice meter due to no convergent and divergent cones there are more losses and hence its coefficient of discharge is less.In venturi meter losses are low due to steamline shape of the diffuser and the pressure gradient is not abrupt as …

**Why is the coefficient of discharge important?**

The discharge coefficient can be thought of as a correction factor for “real” flow meter devices. It is typically determined experimentally for different flow meters. Correlation equations can be used to calculate the real “corrected” flow rate through a given meter.

## What does high coefficient of discharge mean?

Properties of coefficient of discharge The value of Cd is high in nozzle measurement of flow, whereas its value is small in orifice measurement of flow. • It can be increased by lowering the convergent angle in flow measurement. It can also be increased when the pressure of working fluid is enhanced.

## What is the value of coefficient of discharge for Venturi meter and orifice meter?

The Venturi Meter The flow area is at a minimum at the throat. High pressure and energy recovery makes the venturi meter suitable where only small pressure heads are available. A discharge coefficient cd = 0.975 can be indicated as standard, but the value varies noticeably at low values of the Reynolds number.

**Why is coefficient of discharge for Venturi meter greater than orifice meter?**

### What is the orifice flow equation?

The orifice equation describes the rate of flow of liquid through an orifice. The equation can be represented as: $ Q = Cd A\\sqrt{2gh} $. where Q = flow (cubic metres per second) C(d) = coefficient of discharge. A = area of orifice (square metres) g = acceleration from gravity (9.81 m/s^2) h = head acting on the centreline (m)

### What is a coefficient of discharge?

coefficient of discharge. Definition of coefficient of discharge. : the ratio of the actual discharge to the ideal discharge, assuming unit coefficients of contraction and velocity, equal to the product of these coefficients.

**What is the orifice coefficient?**

Cc is called the coefficient of contraction. For a sharp orifice, is usually estimated to be 0.62, a figure that can be used if the exact value is not known. For an orifice that resembles a short tube, Cc = 1, but then there are turbulence losses that affect the discharge.

#### What is valve discharge coefficient?

Discharge Coefficient. The discharge coefficient is a characteristic non-dimensional factor of the valve, which is used to calculate the flow rate (Q) when the valve discharges the fluid from a tank or reservoir (Δh) to the environment.

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