Air Operated Double Diapharam Pumps

What does the data plates say on the pumps? Or should we ask my friend here?

So look it up...

http://www.consolidatedpumps.com/download/1/yamada/YAMADA%20AODD%20Engineering%20Handbook.pdf

Probably depends on what the pumps is pumping and what back pressure it's working against.
Self evidently if it is pumping water into an open outlet it take less than pumping into 3bar.
Del

Here is how I calculate air consumption

1. I calculated volume of air required at 7 bar for 1 stroke of AODD pump for pumping = 0.011m^3

2 Total number of strokes = 2310

3. Time of operation = 35 mints

4. From here I found total volume of air required per hour. (air consumption)

Are these calculation correct and authentic ?

If no, then suggest any other way out.

Also I am looking to calculate total Kgs of air required during 1 hour

See post 3.

The volume of air required to move the diaphragm will depend on the pressure it is working against.
E.G 0.011m^3 of air at 1bar is less than 0.011m^3 at 7bar.

The air will not be at 7bar if it is working against a light load, the diaphragm will move fully before the air pushing it gets up to it's full 7 bar (there is finite resistance to the air flow). Similarly if you are trying to pump against 8 bar back pressure, the diaphragm will not move at all.
The volume of air equates to the work done, which is linked to the pressure you are working against.

Same as every thing more work requires more energy.

Inflating a balloon takes less energy than inflating a hot water bottle.
Del

BTW. I am happy to be shown to wrong on this if someone can offer a convincing alternative view.

0.011m^3 = 11 liters * 2310 = 25410 * 1.714 = 43552.74 liters... to determine weight you need to know the moisture content of the air...Totally dry air at sea level has a density of: 1.2 kg/m3 or 1.2g/L....43552.74 * 1.2 = 52263.288 grams / 1000 = minimum weight

Why did you multiply 25410 by 1.714 ???

To get the answer to your question. Why else?????

What sort of costs? It is easy to measure the electricity consumed by the compressor and value it against the purchase tariff in force. It is easy to depreciate the compressor over its lifetime. It is easy to place a value on the maintenance activities carried out on the compressor and the piping. It is easy to depreciate the installation value of the piping over its lifetime. It is easy to place a value on the land and the building that the compressors occupy.

Air itself costs nothing.

Isn't this a job for a Management Accountant rather than an Engineer?

kg of air used per stroke?

Surely you jest!!!!!!

Just find the weight of one bar of air and multiply by 7. (Joke)

Knowing the weight of air consumed will tell you what?

Why not just measure the power consumed? You can rent instruments to do this.

Or look on the nameplate of the motor and calculate the power consumed over 35 mints.

Or, do as Solar Eagle says.

Why?

diapharam diaphragm

Why? Compressed air is the most inefficient utility in an industrial environment. It takes 7 to 8 hp electric motor to produce enough air to run a 1 hp air motor. So if your calculations are to determine whether an air driven diaphragm pump is is the best bang for your buck. No it's not if there are other ways to available to pump what ever your pumping!

As far as calculating some number. There are too many variables to take into a count to get a reasonably accurate number. One would be the pressure on the diaphragm at full stroke it may not take 7 bar. That would depend on viscosity and pressure on the pumped fluid.

If you really need an cost get a watt meter on the compressor and run a pump by itself for a determined time.

install a flow meter and totalizer on supply line to pump.Then simply record the readout,using whatever local method is viable.

Unfortunately, post # 12 is by far the most accurate (except for #1!!!).

Efficiency (and therefore specific air consumption) of AODD pumps varies widely from different manufacturers and even between different air valve designs on the same model.

Then you also have to take into account material specific gravity, viscosity, head values, flow rates (especially with non-Newtonian fluids)....

Otherwise check with your pump supplier for a pump curve chart and figure it out based on your installation and process characteristics.