Does anyone know where to find or how to calculate the properties of a solution water + 30% (in vol)ammonium sulfate ? ( or similar).
I need viscosity, conductivity , density , heat capacity and enthalpy .
I've asked to my customer, but it's a huge company and it's difficult to get an answer (...
Actually the tube is finned on both side internally and externally .
THe question is how it will behave externally with the new fins?
Thank you very muche for the tip for the series !!
By the way I have another issue !!
THe tube is finned with 19 FPI geometry. the conductivity value that i'm going to insert will not "interfere" with the parameters of the finns ( which are in copper). I mean it has sense simulate the air just changing the conductivity values , or it's a too...
Right question !!
Since the pressure will be at around 15 bar.
Since the conductivity is very low, this could be a relevant step in the right direction !!
Thank you very much for the tip !!
Do you know where I could find a table with these values ?
Thank you very much !!
THank you for the help !!
By considering the air a pure conductive medium, I should consider it like a tube with a thickness of 19.05-12 =3.5 mm with a resistance due to the sum of (2.5/K(copper) + 0.25/K(air) +1/Kcopper) or more simply 0.25/K(air).
Hi there !!
How can I calculate with HTRI an exchanger with double wall tubes. It's practically a safety exchanger with a OD 19.05mm ( ID 14.5 mm) 19 FPI copper tube on the outside and 1 OD 14mm tube on the inside (ID ~12 mm)?
Hoe can I simulate such a tube ? (Let's say that:
in the...
The heat recovery will work with water up to 95°C ( in the first exchanger)and 45°C ( in the second) ..
the working temperature of the tubes will be very low, in counterflow will be approx 200-250°C
The plant will be located in Germany in an industrial zone , but i don't know other details...
What's the difference betwheen 316L and 316Ti in tubes 18mmx 1mm in contact with CH4 smoke ? at 450°C
and with condensate (PH 2-3) at 120°C
thank you in advance !!
I'm working at a heat recovery exchanger connected in line with an CH4 engine .
the fisrt exchanger will have inlet temp 440° and outlet temp 120°C
The inlet temperature will be 120°C and outlet 50°C.
I'm selecting the tubes material and i'm considering AISI316L
but a some source insist for...
Other data:
Temperature 30°C
Pressure from 0.5 Bar to 1 Bar
the vapor content is max 10%
The trouble is which kind of gasket shall I use !!
It's difficult to find a polimer which works well with all those materials !!
Hi !!
I'm working at an BIOGAS receiver.
The BIOGAS came from WASTE and does not have any zootechnical origin)
I have looked at the "general" BIOGAS specs and I have found these components:
1) H2S Hydrogen SOLFIDE
2) Ammonia
3) CH4 Methane (of course)
4) Carbonic acid (also called areal acid)...
Opps I forgot ...
In order to improove the exchange ratio ,the tube will be finned , how does the duplex behave compared with AISI 316 or titanium .
I think that i will need at least 1.65 mm which is 0.065''
Thank you for your answers
this is an normal ammonia cicle not a low temperature one.
The condensing temperature is 35°C with Seawater entering at 30°C . So there will should be no problem with low temperature.
In any case in order to avoid any surprise, I will rate the exchanger for a range...
Can anyone help me?
the exchanger is SEawater tube side and ammonia shell-side
I discarded CU/ni and AISI 316 ...
Someone suggested titanium, i think it should be ok , but i'm looking for something less expensive.
What do you think OF AISI 446/447 and duplex 2507 ?
what are they cheaper (...
