Re: How To Calculate The Water Removal Percentage?
Dear Lynna,
In my opinion, I have to determine the water percentage of the inlet and outlet stream, then the water removal percentage will be the difference of these two.
But it doesn't seem right.
To me I seems right.
Determine the water vapor content of the inlet stream and determine the water vapor content of the outlet stream.
The difference of the two water vapor contents is the added or removed water.
Take care ■
Teus
Level The Playing Field.
You will be setting up sensitive instrumentation at both ends of the dryer. Besides increasing work effort and expense the inaccuracies in each set of results might be repeated. Why not just measure the inlet conditions and the collected water from the dryer, with time? Isn't that what you would be looking for anyway? Cleaning the dryer before each test will not take as long as reaching steady state flows and also guarantees that you will have dried out the dryer before each condition so as not to pick up moisture in transit.
Percentage calculations come later. Gas Laws and Dalton's will play their part and I don't envy your task unless you can find prior test procedure. I would think there would be an ISO/ASME publication to help you. There sure ought to be one somewhere. ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Standard Procedure?
You only need to measure the incoming air, not as easy at it sounds, and weigh the water squeezed out.
There must be an international/national standard procedure or handbook which should apply to all manufacturers. ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Specifics
Dear Lynna,
what is it specifically what doesn't seem right to you?
Something in the calculations as such, or some issue coming out of the technology?
Without getting into commonplaces I assume that for calc.s you considered the different temperature / pressure conditions you mention, which would influence the ability of the air to take on vapor? However, I was not aware that there's significant pressure losses or temperature drops as such for specifically a membrane air dryer system. The imo only temperature drop to be considered is the dew point suppression, due to the decompression of the scavenging air.
From the technical side, there's the issue of the flow percentage of the scavenging air as such, and its percentage of the main outlet throughput depending on overall load into the system.
Regards
R. ■
Re: How To Calculate The Water Removal Percentage?
A wet- and dry bulb temperature measurement of the ingoing and the outgoing gas will give you the water vapor pressure.
Then, as John said:
Gas Laws and Dalton
Have a nice day ■
Teus
Water Treatment Plant
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nice
Calculating water removal percentage involves precision. As an expert, I emphasize the need for accuracy in determining the ratio of removed water to the initial content. This crucial velocity tires calculation, often used in various industries, ensures efficiency in processes like drying or purification, safeguarding quality standards and optimal results.
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In reply to Water Treatment Plant by pearlplsupplieslab
How to Calculate the Water Removal Percentage?
Dear all,
I am working on a membrane air dryer project. In which, I need to do some test on the equipment with different inlet/outlet pressure/temp conditions.
Can you please help me with the calculation the percentage of water removal from the air dryer?
In my opinion, I have to determine the water percentage of the inlet and outlet stream, then the water removal percentage will be the difference of these two.
But it doesn't seem right.
Please help.
Thank you very much.
Lynna ■