Hot Water tanks specifications

[vij36]

Dear All,

Would like to know hot water tank specifications for a 20,000 liters tanks (hot water at 90 degree celsius).
What are the factors which decides thickness, working pressure etc.,

 

[willard3]

You should ask this question in boiler and pressure vessel engineering?
Definitely not here.

 

[FormerAIS]

Would agree with willard3.

What does your governing body state is the regulating code? This would be the first step in my opinion, instead of asking here.

Quality is not an act, it is a habit - Aristotle

 

[LittleInch]

First question - Is the pressure higher than 15 psig? or whatever is the cut off for tank vs pressure vessel. If it is then it's a Pressure vessel and needs to be designed to Pressure vessel codes. If it's not then a variety of shop built tanks can be used - just find a sutiable vendor.

90C though is a high temperature and if this water leaks out is harmful to humans and also needs thermal protection to stop people touching it and getting burnt. So you can't just buy any old tank and expect it to work.

That's in your hands, not anyone else's.

But even if it's more than atmospheric (even 1-2 psig), it means you're really into a circular vessel type tank rather than a simple square tanks.

this is a very poorly written question.

Please provide further details and what exactly your question is.

NB: ET is a forum for asking questions, it's not a free design service.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[vij36]

Sorry for the incomplete information.

We are planning to have a heat pump to generate 90 C hot water and store. It is CO2 heat pump.
The hot water will be generated over a period of 10 hours and will be stored in hot water tanks. (20,000 liters)

One opinion I got is there is no need for pressurized tanks. And other opinion is that we need minimum 6 bar (around 100 psi).

Should I post the query in "boiler and pressure vessel engineering".

Are there any specific codes which I can refer to especially regarding storage of hot water generated by Heat pumps.

Thanks,

 

[chicopee]

For a working pressure of the tank, determine the saturation pressure of water at 90 dC from steam tables then check out a manufacturer's listing of hot water storage tanks having working pressure at or slightly above the saturation pressure of water. make sure the safety relief valve for the tank has a pressure setting not exceeding the tank allowable pressure and the temperature does not exceed the 90 dC.
c.

 

[vij36]

Thank you for your valuable inputs.

I will work out on these inputs to be included in the tank specifications.

Advanced Merry Christmas and Happy New Year !!!