Recent content by Jigneshpadia2002

I got some good explanation from vendors. The equation used in my initial question is correct. Only thing is that vendor's don't have data on Cp of 50-50 glycol-water mix. Does anyone know this? Thanks again for your help. JP

Hi Reena, Thank you for your time and suggestion. The Equipment used in our facility is heating/cooling unit - which able to do both. We have several units, and they all utilize different coolant / cooling fluid. Currently I am looking at the one which can potentially use the water-glycol 50...

hi, sorry for the confusions. "Now I know that the equipment specification is 0.5 KW at -20 C" This referes to the chiller - equipment which has a specification of 0.5 KW at -20 C I agree with your comment on the heat transfer being faster in the initial phase and slower at the end. The...

Can I please ask one question! I have a situation. I need to make sure that a particular cooling unit / Equipment is suitable for a process or not. I am bit new with this type of assignments! I am sure it won't be very challenging for the experts but I really wish to get some help with this...

Thanks 25362 I did realize that few minutes ago! What a waste of time. :) I will start new thread as well. Thanks again

Can I please ask one question! I have a situation. I need to make sure that a particular cooling unit / Equipment is suitable for a process or not. I am bit new with this type of assignments! I am sure it won't be very challenging for the experts but I really wish to get some help with this...

I am not sure about my answer but based on my understanding the pressure is generated by the air flow rate for that particular room and so if one can control the airflowrate then the air pressure can be controled. It goes back to air changes and air flowrate set for that room. The flowmeter...

Thanks Bimr... You got a STAR! :) The second link is very helpful.

Hi, I am curious to know the waste water treatment for biopharmaceuticals containing Antibiotics. In our company we use CIP-100 (its a caustic detergent) to kill the bugs before dumping to the drain but I don't recall any specific treatment given for the cultures containing antibiotics...

Flux = Flow rate / membrane area Unit of flux = LMH

Any other comments?

the optimum set temerature is 25 C for our process. At present for small scale, 5L we are using 1 tones of cooling... we have to scale-up the process to 750L and it the reactors have only 8 tones of chilling so now the question is is the caluclations correct and if correct how do we overcome...

Thanks Quark, I was waiting and hoping that you would eventually give some of your expert input. I am glad your did. For some strange reason we have to maintain our fermentation at 25 C and we are able to do it at 5L scale because of the Height to dua ratio and availability of the bigger...

Mike... It does make some sense but I am still not able to understand it clearly. If you can elaborate it for me than that would be great. I got your point that if the pressure on inlet was changes it is going to affect the flow and that is why the total flow is less. but is there any equation...

About pump: I am using colepalmer pump - Peristaltic pump. It requires me to use silicone tubing. Filter area is 50 cm2. pressure gauges were calibrated before usage. Flowrate: without putting the filter inline the pump flowrate was measured and it was 50 ml/min. I am not using flowmeter. Flow...