5 replies to this topic

[RCavarzan]

I need to design vent size for atmospheric tank, cause the tank have a thermal shock from 95° to 4° C due by CIP cycle with washing at 95°C and quickly cooling with water 4°.

[fallah]

Hi,

 

How about filling and emtying rate; don't you think the worst case for tank vent to be filling or emtying rate not thermal breathing?

[proinwv]

Would the thermal cycle occur simultaneously with any liquid transfer?

[RCavarzan]

Hi,

 

How about filling and emtying rate; don't you think the worst case for tank vent to be filling or emtying rate not thermal breathing?

i checked filling and empty rate with API 2000, but I need to be ensure that is enough for thermal variations

[RCavarzan]

Would the thermal cycle occur simultaneously with any liquid transfer?

I have CIP cycle when tank is empty, is a step between every process cycle,

I have two opening the vent and outlet connection, but I think is better to consider only vent area, cause after washing at 95°C  I have cooling with water at 4°C, so there is formation of steam and then condensing.

[fallah]

Hi,

 

You should estimate the rate of condensation for cooling with 4 C water after washing at 95 C. If the tank is designed for full vacuum condition there would be no concern. Cooling procedure (internal or external, spraying water or ...) would be helpful for mentioned estimation which is lacked in your explanations.

 

After above mentioned estimation the proper vent size for handling such vacuum can be calculated.