high temperature hot water systems

[kmic]

Hi everybody
I have to design a high temperature hot water system above 100 0C for UHT pasteurizer. My question is how to handle this design and which method to follow for best results to achieve hot water above 100 0C.

NOTE: If there is any design calculation it will be very helpful.


Pl’s advice

 

[romke]

when you want the water not to boil, you need to design a system that is closed, so that the fluid temperature can rise to say 105 deg C without leakage and without boiling, in fact the same situation as in a pressure cooker. another way to get a higher temperature is to mix the water with a another fluid that can raise the boiling point of the mixture. standard antifreeze can achieve that, but given the fact that it is a system for a pasteurizer you may need a foodgrade type fluid in this case (HT1). a blend of water and propylene glycol might thus be a suitable mix.

 

[willard3]

You should talk to a senior person in your office about this.

 

[LittleInch]

You're talking about superheated water and pressurized systems.

If the pressurization is lost for any reason, planned or unplanned ( leak or breakage) unless you've gone down the mixture route to get a liquid which is below atmospheric boiling point at your required temperature, then you would have instant flashing and huge volumes of steam to deal with. This could cause severe burns and death if anyone got in the way, so it's not something to be trifled with.

You really shouldn't be starting out on this with a knowledge base near to zero. Tell whoever asked you to di that you can't do it without some experienced engineer giving instruction and reviewing. Get this wrong and it will kill people. You don't want that.

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