What is the conversion relationship between flow rate and flow rate?

The conversion relationship between flow rate and flow velocity is calculated by the following formula, q=vxs, where v represents the flow rate of water in the pipe, s is the cross-sectional area of the pipe, and q represents the flow rate of water in a specific time. where the unit of q is m s, the unit of v is m s, and the unit of s is .

The flow rate is also easy to calculate, the flow of water in the pipeline is completed by the pressure of the pump body, and its flow rate can be measured by the amount of water per minute from the faucet.

The flow rate is in a flow formula or unit of measurement.

There are three forms of division:

Volumetric Flow: The flow rate expressed in Volume Time or Volume Time. Such as: m h, l h

Volume flow rate (q) Average flow rate (v) Pipe cross-sectional area (a) Mass flow rate: Flow rate expressed in mass time. Such as:

kg h mass flow rate (m) medium density ( ) volume flow rate (q) medium density ( ) average flow rate (v) pipe cross-sectional area (a) weight flow rate: flow rate expressed in force time. For example, kgf h, weight flow rate (g), medium gravity ( ), volume flow rate (q), medium density ( ), gravitational acceleration.

g) Volumetric flow rate (q).

Acceleration due to gravity (g) Mass flow rate (m).

The mass flow rate of bai(kg h) can be converted to flow rate (m s), flow rate = flow rate inner diameter of pipe channel inner diameter of pipe 4. However, it is necessary to know the cross-sectional area of the flow channel and the density of the liquid body. The flow rate is proportional to the pipeline section and flow velocity, and the relationship between the three is

q=sv, where q — flow rate (m3 h); S — cross-sectional area (m2); v — average velocity of the fluid (m s). Or after splitting s, it becomes: q = (d2) 4 * v * 3600 (m3 h ) where q — the flow rate is quietly rotten (m3 h); d — the inner diameter of the pipe (m) such as a mass; v — average velocity of the fluid (m s).

The relationship between the amount of DAO and the volume flow rate of mass flow is as follows: qm = where q — density of the liquid (kg m3, t m3); Clear water at room temperature — 1000kg m3. The relationship between mass flow and flow rate can be obtained:

qm = (d2) 4 * v *3600 (m3 h) Note: The volume flow rate is expressed in Q and the units are: m3 s, m3 h, l s, etc.

The mass flow rate is expressed in qm and the units are: t h, kg s, etc. Additional Information:

According to the above formula q = (d2) 4 * v * 3600 (m3 h) when the flow rate is constant, the flow rate is proportional to the square of the pipe diameter, and when the pipe diameter is replaced in the construction, it should be calculated before it can be replaced. For example, two DN50 pipes cannot replace one DN100 pipe, and the flow rate of DN100 is 4 times that of DN50 pipes, so four DN50 pipes must be used to replace one DN100 pipe, and so on. The flow rate of the pipe is not arbitrarily set.

From the fluid mechanics, it can be seen that when the flow velocity of the medium in the tube is larger, the resistance is greater. When the flow rate is smaller, although the flow resistance is smaller, the pipe diameter required for the same flow rate is larger, resulting in an increase in equipment costs. Therefore, people take into account these two factors and take a reasonable flow rate called the economic flow rate, and people choose the pipe diameter according to the flow rate to calculate it by relying on the economic flow rate.

Mass flow rate (kg h) can be converted to flow velocity (m s), flow rate = flow rate pipe inner diameter pipe inner diameter 4. But it is necessary to know the cross-sectional area of the flow channel, the density of the liquid.

The flow rate is proportional to the pipe section and flow velocity, and the relationship between the three is Q=SV

where q — flow rate (m3 h);

s — cross-sectional area (m2); Rough whoops.

v — average velocity of the fluid (m s).

Or after splitting the s, it becomes: q = (d2) 4 * v * 3600 (m3 h).

where q — flow rate (m3 h);

d — inner diameter of pipe (m);

v — average velocity of the fluid (m s).

The relationship between mass flow and volume flow is: qm= q

where — density of the liquid (kg m3, t m3); Yan Dan line.

Clear water at room temperature — 1000kg m3.

The relationship between mass flow rate and flow velocity can be obtained: qm= (d2) 4 * v *3600 (m3 h).

Note: The volume flow rate is expressed in Q and the units are: m3 s, m3 h, l s, etc. The mass flow rate is expressed in qm and the units are: t h, kg s, etc.

1. Formula. Flow velocity = pipe cross-sectional area x flow velocity = pipe diameter 2x flow velocity (cubic meters per hour) 2: squared. Pipe diameter unit: mm

Pipe diameter = sqrt (flow rate), sqrt: open squared.

2. Precautions: When calculating in general engineering, the pressure of water pipelines is commonly used as follows: the flow rate of water in the water pipe is 1-3 meters per second, and it is often taken in meters and seconds.