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Michael Czarick
- Athens, GA
- United States
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Michael Czarick's Discussions
How to calculate Vent space for minimum ventilation.
Replied Nov. 20, 2009
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Generally speaking you need approximately one square foot of inlet opening for every 750 cfm of exhaust fan capacity operating. Typically inlet opening is adjusted according to static pressure. Too little static pressure and the air will not mix pro…
Last year Dr. Fairchild and conducted some preliminary testing of the Litmus ammonia indicator strips. Though they show significant potential there are some issues related to their use in poultry houses. During our eighteen day test the 25 ppm strip…
thank you fo your answer Mr Czarick.Fan producers must take that in acount.
50 hz vs 60 hz.
50 hz only affects fan performance if it is not taken into account when the fan motor pulley (or combination of fan and hub pulleys) is/are installed. Yes if you take a 50/60 hz motor and power it with 50 hz then the fan will spin 17…
hello there.not all countries uses 60 hz.in my country we use 50 hz which reduce fan performance.
I guess we could calculate it, but my point is that even if the generator had no effect on the fan it would not be practical. Typically if an object is a few diameters away from the fan it would have minimal effect on fan performance.
Mike Czarick
Well put! Although, I would like to know the effect the generator have on the speed of the air that is being output from the fan, because i am sure it will be reduced. But is there any way to quantify the effects?
Floor heating systems though they sometimes appear to be the ideal there are a number of potential problems:
1) Cost. A floor heating system can cost substantially more than a traditional heating system. One aspect that tends to make it cost prohibi…
Thanks Michael for providing this information. It is very timely as hot months of the year (late Spring-Summer) are fast approaching.
Profile Information
- Company/School
- The University of Georgia
- Job Title
- Extension Engineer - Poultry
Comment Wall (4 comments)
- At 4:40pm on March 23, 2010,
Mohammed S. AL-Derbi, Ph D. said…
- I would like to express my gratitude to you and the huge effort you put in th poultry environmental control studies. As a researcher and recently as an investor in broiler farms i would like to get in contact with you on your e-mail for technical issues which i share with you from engineering point of veiw. My e-mail (Dr_msd@hotmail.com). Thanks.
Dr. Mohammed AL-Derbi
Saudi Arabia
- At 10:29pm on June 9, 2009,
Jason Lambertson said…
- Michael,
I think Tyson has some fears about building a 60' wide pullet house...but with 5 lines of feeders it works for feeding purposes...I wonder how I can work out the language to explain the advantages of the cost per sq ft on wider is better if performance on the pulleys is not affected...for example i would need to build a 50 x 540 or a 60 x 450...ventilation wise big difference?
- At 11:37pm on May 29, 2009,
Jason Lambertson said…
- thanks for responding.. Tyson wants me to build capacity based on the pullets at 1.35 per square foot and the males on 3 per sq ft...With the pay I am currently receiving I am a little concerned on the cost of making these houses cash flow... I currently grow one flock of broilers per year at the pullet farm to help it cash flow..but with the addition of these new houses I would now be on a constant rotation of pullets year round. I had to take broiler setup intoaccount on my existing farm because I was lucky enough to grow my broilers in the summer..lucky me right...My existing farm has houses that are 41' wide with two loops of loop feeders...the houses have a computer room in the middle and for example pullet house #1 is 380 long ..it has 7 chore time turbo fans with munters mi t dark pads on the inlet and tunnel fan area on walls built in side the house. the same setup is for all four houses that i currently have with sidewall slide in vent boxes with munters mit t dark push in blackout inlets every 12'....My biggest concern as I am sure Tyson's is...is how wide can a pullet house be.. My initial idea is to use radiant tube heating and straight line feeders this time. Width has to be made up so our birds per pan matches Tysons goal... here is the scheme I have come up with...
27000 pullet farm... i have two existing broiler houses that are five years old..i am looking to convert them.. they are 46 x 460.. with evap cool pads and 8 multifans each...with 4 straight line feeders i would have about 16.75 pullets per pan at about 1.5 sq ft per pullet...that should be ok for tyson...so on that farm i would need 12,000 square feet for a male house...question is how wide..another 46' house would only be 268' long..just would like your thoughts..
Second farm would be totally new... I prefer to house the males in a totally seperate house.. Not a big fan of a screen and two seperate feeding cycles in one house... so on that farm i would need 47000 pullets at 1.4 sq ft and 7000 males at 3 per sq ft....so to start the males would obviously need 21000 sq feet.. i wonder how wide? the pullets need a total of 65800 sq ft...question is from a project financing issue wider i guess is better but how wide to justify the cost...load cells, feeder controls, multiple motors and blackouts throw some much higher equipment factors into this mix... any help would be greatly appreciated...i want to make sure ventilation is adequate based on certain widths...thanks again...
- At 9:35pm on May 13, 2009,
Jason Lambertson said…
- Hi Michael,
Its been years since we talked. I am looking to design and build some more Pullet houses for Tyson up here in Maryland...You helped me with some design around 1999. I was wondering what features if any you would plan for and what ways might help me be economical in building them.... Looks like the farm sizes I would need would be one with 27000 pullets..4000males...and another 47000 pullets and 7000 males on the other... I currently have a farm that has 2 houses built end to end with a computer room in the middle...farm totals 36000pullets and 5500 males.. Tunnel fans are in the middle by the computer room and the tunnel inlets are on the other end..basically it is a 380' house then a 12' computer room then another 380 house. I have had great performance for Tyson over the last 9 years and they want me to build more and grow for them... I know you probably don't remember helping me with this but i want to make sure i look at this from every angle... In these times it is hard to make numbers work to be efficicent and profitable.. Any suggestions would be great...
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