6 replies to this topic

[PCH94]

I'm looking to purchase cooling towers for a project and have no experience of selection type. How do I decide what type is the best option. Induced or forced

My scheme involves a cooling capacity of 3560 kW cooling water, a maximum 66 deg C to 22 deg C in a wet bulb temp 19 deg C. I've chosen evaporative cooling rather than adiabatic as the heat load is too great. With respect to selection - noise is an issue as we are close to neighbours, also maintenance of fill packs and disinfection is a high requirement.

[kkala]

See [url]http://www.tpub.com/content/doe/h1018v2/css/h1018v2_103.htm[\url] for disadvantages of forced draft cooling towers. Having not seen FD cooling towers, I assume their disadvantage is due to the fact that their fans are located at their side (at the bottom), so air distribution is not so even as an induced draft tower with fan located at center. Subject is reported in Perry, (7th ed, p. 12-15) in Evaporative cooling, Mechanical draft towers.
FD cooling towers may have advantage in corrosion of fans, since air passing from their blades is non wet, but atmospheric air (if no channeling occurs).
Natural draft (or hyperbolic) cooling towers cause no noise, but they are quite bulky constructions.

[PCH94]

KKala, Thanks for the web link and ref to perry. Much appreciated. Thanks

[breizh]

PCH 94

An other resource

Hope this helps
Breizh

[Zauberberg]

Some more references on the topic:

http://www.cheresour...ctowerszz.shtml
http://che.sharif.ir...sign Manual.pdf

Edited by Zauberberg, 26 March 2011 - 10:50 AM.

[breizh]

Hi,
An other excellent resource :

http://spxcooling.co...undamentals.pdf

Breizh

[Art Montemayor]

You seek information to decide on the type of cooling tower best suited to your application. I have used both Induced and Forced Draft and can recommend that that you should consult with experts who, in the end, will supply you with the finished, guaranteed equipment. Go to: http://www.baltimore.../cooling-towers

This is a typical designer and fabricator of what you are looking for. There are others - such as Marley - that dominate the higher capacities of cooling towers. You haven't given us the water flow rate, so I don't have a "feel" for the size.

Baltimore Air-Coil makes both Forced and Induced Draft models and should be able to guide you in the Pros and Cons of each type. Your heat load should be a large factor in which model is best suited for your application.

Hope this helps.