Can fin fan cool water below outside temperature
Can fin fan cool water below outside temperature
(OP)
Hi,
We are trying to change our cooling tower for fin fans, the problem is that we need to cool the water from 130 to 85F. We are situated in texas so I am afraid that we will not be able to cool the system below 100F during the summer using fin fans.
Thanks for your help on this one
Aitor
We are trying to change our cooling tower for fin fans, the problem is that we need to cool the water from 130 to 85F. We are situated in texas so I am afraid that we will not be able to cool the system below 100F during the summer using fin fans.
Thanks for your help on this one
Aitor





RE: Can fin fan cool water below outside temperature
I would be surprised if got to 100 deg F in summer months in TX.
RE: Can fin fan cool water below outside temperature
I guess the only solution to eliminate our corrosion problems is to move the cooling towers far from the tanks and reactors.
RE: Can fin fan cool water below outside temperature
You could try a painting program on the equipment next to the towers or possibly a separation wall. May be easier than relocating the towers.
RE: Can fin fan cool water below outside temperature
Even in mid and east Texas the temperature often get in triple digits, especially during august and september.
"Scientists dream about doing great things. Engineers do them." -James Michener
RE: Can fin fan cool water below outside temperature
There is a current discussion thread
Heat transfer & Thermodynamic Engineering
RE: Can fin fan cool water below outside temperature
If your process fluid is able to be run directly into the tubes of a WSAC, then you will avoid the double approach of CT to atmosphere plus HX to process. About the best you can get there with the best CT technology and the best Hx technology is 7+5 = 12 degF respectively.
If you still have to have cooling water and use Hx's, the WSAC Mfg only claims to be able to get a 10 degF approach to atmosphere (wet bulb). Then the very best you could be is 15 degF approach to wetbulb.
rmw
RE: Can fin fan cool water below outside temperature
RE: Can fin fan cool water below outside temperature
These ideas might help:
Reduce the air flow on your cooling towers (the airside flow is ultimately the energy that goes into producing drift), inspect and repair your drift eliminators, consider changing from a crossflow to more efficient counter flow design, consider segregating users that don't need as cold a water and use finfans there so as to unload the tower.
The Cooling Tower Institute (CTI) has a number of technical papers on drift measurement and control which might be of interest to you. Your cheapest bet is going to be to really understand the drift problem and address that rather than replace the whole system.
best wishes,
sshep
RE: Can fin fan cool water below outside temperature