Flow Calculation

Doesn't matter much what you decide to call your measure method. Whether using a yardstick in a barrel or a floating ball and marks on a wall or a counterweighted tank that goes up and down; it's a meter.

Not without more information.

This is not flow from fix cantainer... We have chiller which has fix chilled water circulat from system Production dept. Takes chilled water use it & give us back after incrise temp. So how can I know how much flow going in which plant.

Why is the knowledge of the flow of any particular value?

these are NEVER wrong, accurate to within a millionth of a litre

Take a container, preferably a cylinder shape, a tape measure or other distance measuring device and a stop watch or wrist watch.

Start the unit under test, let the fluid fill the container for a predetermined length of time. Measure the height of the fluid, calculate the volume of fluid, divide this by the elapse time of the flow and you get the volume per time or volume/time. Some examples of this could be: gallons/minute; liters/hour; ounces/day, barrels/year or shot glasses/hour.

Good Luck, Old Salt

Take an empty used barrel of standard 205 ltr capacity, fill it upto brim, and measure the time needed. 205 ltr / time in sec gives the flow per second .

This is not flow from fix cantainer... We have chiller which has fix chilled water circulat from system Production dept. Takes chilled water use it & give us back after incrise temp. So how can I know how much flow going in which plant.

you don't

You are very precise would you recommend same barrel for a flow of 0.1 l/min and an other for 1500 l/min ?

This is not flow from fix cantainer... We have chiller which has fix chilled water circulat from system Production dept. Takes chilled water use it & give us back after incrise temp. So how can I know how much flow going in which plant.

Really?

Do you have no information on the capacity of the equipment?

Have you no one there who knows how to estimate flows based on pipe diameters, lengths, etc? Drawings? Specifications? Engineers?

You have no idea of the pressures in the system?

You can't buy a clamp-on flow meter and get some real numbers?

Hire an engineer! Spend a buck!

You can look at the increase in temperature. then compare it to the energy input for a corresponding part of the chill water loop.

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Alternately, you can look at the temperature reduction and then compare that to the change in temperature, flow, and thermal characteristics of the fluid to which the chill water system is rejecting heat.

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In such a case of course no flow meter is required but a more complex energy meter to know how much energy was injected in the water flow. It is to make a choice either flow or energy one of them has to be quantified.

There may not be a need for a 'complex energy meter', but it all depends upon what information IS actually available.

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If you had a good idea about the amount of heat expelled by the chill water system (knowing flow rate, ΔT and thermal characteristics) , then you could make decent estimates of the total chill water flow with just the chill water ΔT.

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There really isn't enough information provided, and I am beginning to think perhaps it was homework.