Small Duty Nitrogen Heater
Small Duty Nitrogen Heater
(OP)
I need to find a heat exchanger that can heat 100kg/hr of 4bar N2 from 15C to 135C against 4 barg steam. This is a small duty application (<3.5kW). I am thinking there may be an "off the shelf" compact exchanger for such a service.
Any equipment links or suggestions are appreciated.
best wishes,
sshep
p.s. I am reworking a design by an operator which called for simply co-insulating the N2 with a steam line, but no basis (flow, temp, duty, length, etc) was given. This is an important application so I need something a little more deliberate than was proposed. Electric heating might be an option so you can direct me to that as well.
Any equipment links or suggestions are appreciated.
best wishes,
sshep
p.s. I am reworking a design by an operator which called for simply co-insulating the N2 with a steam line, but no basis (flow, temp, duty, length, etc) was given. This is an important application so I need something a little more deliberate than was proposed. Electric heating might be an option so you can direct me to that as well.





RE: Small Duty Nitrogen Heater
RE: Small Duty Nitrogen Heater
I would probably go with an ITT unit with welded tubes.
www.ittstandard.com. Or if I could get away with it I would go with a twisted tube in a tube heat exchanger. I have a sample of one in my desk but I am not at work so I don't have a contact for you.
Regards
StoneCold
RE: Small Duty Nitrogen Heater
Shep:
For these type of small heat-up applications I often go to Graham Heat Exchangers and their "off-the-shelf" Heliflow unis. These heat exchangers are made for small loads, are self-compensating on the expansion differences (the spiral coils are a natural spring), and are very reliable and simple to install. You can get copper, steel, or stainless coils as well as a steel or cast iron shell.
For this size of unit you might get a "next-day" delivery.
Good Luck.
RE: Small Duty Nitrogen Heater
I am getting quotes from all of these guys and will post the merits of these options in a few days. None of these vendors specifically mention steam heaters as an application on their sites, but all claim they can do it.
best wishes,
sshep
RE: Small Duty Nitrogen Heater
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