Dear Friends,
In a Mechanical Draft cooling tower, Fill is the most important component,
I request your good self to spare a few minutes for me for the step by step procedure for the design of fill.
If you are working with MDCT, then kindly share Geometrical and Technical specifications of the different components of the cooling tower used by you.
Thank you
Not knowing about this topic I did a brief research online and immediately found these websites:
https://www.hewitech.co.uk/cooling-tower-fills/
https://www.wearelel.com/critical/blog/what-is-cooling-tower-fill-and-which-type-is-best
and this expert in measurement of MDCT:
https://home.cis.rit.edu/~cnspci/. This person Carl Salvaggio might perhaps be a useful person to contact and ask for further recommendations.
From my brief look it seems that issues can be categorised as to do with cost, size, use, maintenance, footprint (land size requirement as well as sustainability-wise), access, indoor or outdoor, design life, costs-in-use/ life cycle costs/ whole life costs, efficiency, customers preferences, possibly planning criteria, definitely these days sustainability and some of these parameters are interrelated, possibly availability of parts, labour, expertise and so on come into the picture.
I am sorry that I am not an expert in this area but thought that I would get the conversation going and very best of luck to you in your project. I would also add to be proactive and select actual companies in this field and email, even go and see them, call in on the off chance if you can get to them. The first two websites seem to cover the technical issues and types of fill quite well, but you need further in-depth information and discussion. Perhaps drawing up a questionnaire on what you think are the major issues in deciding on types of fill and then putting them in place might help. Asking questions makes people think and gets them involved, Leave spaces for them to evaluate the different systems perhaps. Again good luck.
I have written extensively on the subject. You can download the references for free at my web site and also free software. When you ask about fill "design" I presume you mean fill "selection"; that is, picking which fill to use that is commercially available. Actually designing fill would take many years and an entire company with manufacturing facilities. There are several considerations when selecting a fill. Heat transfer is only one of these. Retention of dissolved solids or attachment of biofoulers are also important considerations. Resistance to heat, fire, and chemicals must also be considered, as well as expense, point of delivery, onside assembly, warranty, and ultimate disposal. http://dudleybenton.altervista.org/index.html
Dudley J Benton looks impressive! This should help GURURAJ D GOKAK a lot!
Depends on at how much rate you want your water to be cooled, as the cooling rate of the tower depends on heat and mass transfer going on in packing or fills. And I think you mean to ask about selection !
- Generally the most common packing used is hexagonal (helps in good contacting of vapour and liquid).
- Larger the contact area higher the evaporation rate.
- You can also use circular packing.
- Metal packing is preffered because of higher (K) rate. (K= Thermal conductivity).
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