Ventilation Rate Data

[SoD]

Hi, I am designing a ventilation system for poultry house.

I need the required outside air flow rate (i.e. ventilation rate) for a poultry house to find out the capacity of ventilation system.

I have checked the ASHRAE applications handbook, which gives the data for ventilation rate for a tunneling based (negative pressure system) ventilation system. But I need to design the ventilation system with refrigeration cooling.
ASHRAE data is 1 to 2 L/s per Kg of live mass for summer conditions.

Also I found a rough range of ACPH on engineering toolbox page. (Link)


If anyone could help me authenticate the data or find the data for ventilation rate for poultry that would be great.
Thanks.

 

[Compositepro]

There seems to be a wealth of information provided by a Google search.

https://www.google.com/search?client=firefox-b-1&q=air+changes+per+hour+for+poultry+house

 

[SoD]

@Compositepro

I have tried all of that, but can not seem to find any relevant data.

As all the data given is for a evaporative cooling system in which wind chill effect is used for cooling.
But as I am designing an AHU the ventilation rate would be lot less than the evaporative cooling system, but I can not seem to find any data.

 

[berkshire]

It has been about 30 years since I was involved in chicken house ventilation. Most of these were served by straight axial flow fans blowing across the short way of the house and/or misting type coolers . Now you are talking about refrigeration type cooling, I personally have only seen that in hatcheries. What kind of chicken house and what climate do you need refrigerated air in ?
B.E.

You are judged not by what you know, but by what you can do.

 

[SoD]

@berkshire

Yes, I am trying to go for refrigeration cooling for a laying hens poultry shed in tropical climate.
The temperature varies from minimum 18 deg cel. to 42 deg. cel. maximum throughout the year.

This new design will be like an theoretical experiment from which its implementation would be decided as per the design quality and economics.
But I need to at least find out its possibility on paper, even if it does not get executed.

So, as you have lot of experience, may be you could help me with your insights or pointing me towards resources.

Thanks.

 

[berkshire]

SoD,
What you are trying to do is outside my area of expertise, Most of my Chicken house work was done in the state of Georgia in the USA . We would get up to 42 degrees max only for a couple of weeks around the end of July through August. The Chicken houses I worked on were Broiler houses, and on very humid days when the misters were unable to drop the temperatures enough, there were some stock losses. The other side of that was, in the winter, temperatures would drop to minus 3 or 4 C . We would calculate that the average growing bird would produce one to 10 Btu's depending on size with an adult bird producing about 34 Btu's So by closing the curtains and reducing the ventilation we were able to keep the birds comfortable, we also used infra red electric heaters on extremely cold days.
Now for a battery hen situation like you are proposing I have no knowledge. However I am thinking that since most battery houses can be multi story you could get by with a smaller foot print. So as you already know, you would calculate the heat and moisture output for each bird times the number of birds in the house, then the oxygen requirement ( Fresh Air.) ,your moisture from respired air will be taken care of by the evaporator coils on your AHU, the other thing you will have to watch for will be ammonia generated in the fecal matter, your ventilation system will have to remove this as well. Anyway I do not know if this will help.
B.E.

You are judged not by what you know, but by what you can do.