Recent content by zonnegod

Hello, I have a heat transfer as follows: a coil with steam heats a tank of soda. There is a control loop. I have a temperature instrument and according to this a control valve opens so that the desired temperature has to be in the tank according to how much steam is enters the coil or not...

JackWhite and Danw2, I did it in this way. I increased the gain, but not too much because if I did it too much the controller got a little crazy... thanks

Thanks, I will have a look on it. keep in touch!

I am dealing with a pid controller which has to regulate a flow as follows: Set Point: 60 mc/h Manipulated variable is a flow control valve. Now, in practice I have noticed that the reaction time is very slow. Considering I can make a tunning and I can change, the "gain", the "integration...

Hello, Can anybody tell me why after passing the water through activated carbon filter the conductivity and organic content increases? It should not be opposite than this? Should I continue with backwashing the filter? Thank you

Yes it is about weight percentage. The only way is to prepare the brine in the tank. Theoretically is easy. Lets say that we have 1 liter solution then you have to add 300 g of NaCl to have 30% solution. But after what time can I tell the solution is saturated? Regarding the instrumentation I...

Thank you for your replies! The problem is that I have a vessel which I cannot see inside where I have to prepare a saturated solution of brine. The temperature is the ambiental temperature (~20 degrees Celsius). The saturated solution must have 30% concentration of NaCl. Is there any way that I...

how can you tell if a solution of brine is saturated? anyone knows?

europipe, this a filter nozzle: http://www.ftr.com.tr/default.asp?sayfa=goster&no=c4. maybe it helps

Have you ever tested the nozzles before? I have to prepare some sort of procedure of how to test the installed nozzles on a plate inside a filter vessel. The filter vessel is cylindrical. It's a possibility to test only using pressure but in this way how can I see which nozzle is damaged?

In order to test the nozzles of sand filters (vertical cylinder vessel) we have to introduce water in the vessel at the specific operating flow rate, both ascendant and descendant way.

Hello, Does anyone have an idea about how a "broken nozzle test" for vertical cylinder filters should occur?

So you are saying that heating up the air it's a solution? I am degassing water indeed.

What happens if the air used for blowers in degasifiers for removing CO2 is feeded from outside and has a very low temperature (aprox. -20 degrees C)? I know that the solubility of gases in water decreases while increasing the temperature and decreasing pressure.