Recommended Minimum Ventilation Rates, MWPS

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Recommended Minimum Ventilation Rates, MWPS
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Approximate Fan Capacities

• 12 1,200 CFM
• 16 2,500 CFM
• 18 3,000 CFM
• 24 6,000 CFM
• 36 12,000 CFM
• 48 20,000 CFM
• 52 22,000 CFM

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Modeling Ventilation Realities1200 hd room
Curtain Sided
Stg 1 2 F BW 2 - 24 variable speed pit
fans Stg 2 2F BW 1 F differential 2 24
variable speed pit fans Stg 3 2 F
differential 1 36 single speed end wall
fan Stg 4 2 F differential 1 48 single
speed end wall fan
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Fan Basics
6000 cfm/fan x 2 fans 12,000 cfm 12,000 cfm x
50 6000 cfm 6000 cfm / 1200 pigs 5
cfm/pig 50 minimum speed does not 50 cfm 65
rpm often 50 cfm
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Modeling Ventilation Realities1200 head room
curtain sided
Room Temp above set point 2 3 5
7 9
Curtain sided with 4-24 pit fans Stg 1 2 F BW
Stg 2 2F BW 1 F differential 1-36 wall fan
Stg 3 2 F differential 1-48 wall fan Stg 4 2
F differential
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Getting Ventilation Right
Balance Temperature F
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Getting Ventilation Right

• 5000 pigs double stocked
• Winterized tunnel curtain, bubble wrap in side
  curtain and fans winterized
• 16F temperature
• 74F set point
• 24 lb pigs

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Getting Barns SealedGal Propane/Day

• Reduces
• Inlet leakage
• Radiant heat loss

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Emergency Ventilation
Cant seal too tight need to be sure these can
function
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Bubble Wrap in Barns in Winteryes- BUT!
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Bubble Wrap

• Side wall curtain drops
• 12 open at top continuous
• Starting small pigs
• 4 10 ft wide openings if using plastic 200 ft
  long

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Production Goals For Success

• 24 pigs/female/yr to slaughter
• 6500 lb live wt/female/yr (4800 lb carcass wt)
• 1.7 lb/d wean-finish gain
• 75 lb gain/ft2/yr

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Production Goals For Success

• 92 of weaned pigs in packer grid

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Experience is the name everyone gives to their
mistakes!

• Oscar Wilde

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Everything I Learned Since Last Year

• Dr Mike Brumm
• Brumm Swine Consultancy, Inc.
• North Mankato, MN
• 507-995-4709
• mbrumm_at_hickorytech.net
• Blog www.Mnpork.com