Measuring and Controlling Energy Costs, Dr. Mike Brumm, Brumm Swine Consultancy, Inc., from the 2009 Iowa Pork Congress, January 28 - 29, Des Moines, Iowa, USA. Are rising energy costs cutting into your bottom line? Energy efficiency plays an important role in a pork producer's ability to be profitable. Mike will discuss today's energy costs and how they are affecting today's pork producers. He will offer ideas that will help pork producers minimize their energy costs and save significantly on energy bills.

1. Measuring and Minimizing Energy Consumption Dr Mike Brumm Brumm Swine Consultancy, Inc. North Mankato, MN

6. 50% of Rated CFM Rule of Thumb 50% CFM = 65% of rpm

7. AP Fan Response to Voltage 96% 76%

8. Aerotech Fan Response to Voltage 45% 50%

10. 50%

12. Airstream Expert Motor Curves Laboratory Conditions 90 112 122 133 160 154 135 135 122 120 40 96 116 131 139 166 170 154 148 137 131 50 103 118 139 148 173 182 169 162 148 140 60 112 122 147 158 180 192 185 173 160 150 70 118 125 155 168 187 203 201 184 175 160 80 131 129 163 184 202 217 217 198 193 178 90 240 241 244 243 243 243 243 243 242 242 100 Voltage 10 9 8 7 6 5 4 3 2 1 % Scale Motor Curve

13. Motor curve recommendations for various fans from Airstream controller

14. Where to set Motor Curves on Airstream TC-5 or Aerotech 2.4 typ

17. Ideal Relative Humidity 50-70%

18. Relative Humidity Fluctuates

20. Static Pressure and Variable Speed Fans 10 mph = 0.05 20 mph = 0.20 Run 1 fan at higher minimum speed vs 2 fans at lower speed

21. 2 pit fans @ 30% minimum speed Double stock with 2200 weaned pigs

24. Goal: ~7-800 fpm

25. Secure Pit Covers – inlet for fans 1200 hd wean-finish Double stocked 7.5 ft 2 inlet at start

28. Hi/Lo Furnaces

30. Emergency Thermostats Recommendation – Heater -5 set point - Fans - +?

31. Emergency Thermostats Location relative to tunnel curtain?

32. Emergency Thermostats Location relative to room conditions?

33. Emergency Thermostats Location relative to room conditions?

34. Emergency Alarm Systems Include long distance or cell phone number – proof of call may be an issue in some claims

35. Verify Emergency Equipment Routine Test and Written History of Test Monthly X/yr?

36. What would insurance pay at this site?

40. Recommended Minimum Ventilation Rates, MWPS 10 150+ 7 75-150 3 30-75 2 12-30 CFM/pig Pig Wt, lb

42. Modeling Ventilation Realities 1200 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

43. 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

44. Modeling Ventilation Realities 1200 head room – curtain sided 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 Room Temp above set point +2 +3 +5 +7 +9 57 47 34 22 2 -47 63 200 61 53 42 31 14 -27 65 150 67 60 51 42 29 -4 68 100 73 67 61 54 45 23 70 50 F Degree Balance Point 100% 50% 100% 50% Temperature Pig Wt 47 30 20 15 10 5 cfm/pig: Set Point Stage 4 Stage 3 Stage 2 Stage 1

45. Balance Temperature F Getting Ventilation Right 24 8 -11 67 100 50 42 32 19 70 50 60 53 45 22 78 25 10 7 5 2.5 Inside temp wt CFM/pig

48. Emergency Ventilation Can’t seal too tight – need to be sure these can function

49. Bubble Wrap in Barns in Winter yes- BUT !

51. Bubble Wrap – tunnel and sidewall 30-40 ft? Inlets and Outlets are always necessary for emergency ventilation to work

52. Heater Offset Time Temp. Heater off Set point Differential Room Temperature Heater on Offset Heater on Heater off 2 F Recommendation

53. $4.50/furnace/d propane $1.20/gal propane

56. Dirty Fans and Shutters

57. Dirty Fans and Shutters

60. What’s the performance of this fan? Note shutter partially closed No wind, 0.06 static pressure

61. Covering Fans in Winter

62. Covering Fans in Winter

63. Covering Fans in Winter

64. Covering Fans in Winter

65. Effect of Drive Belt Tension 48-inch Fan .08 .16 .24 w.g

66. Experience is the name everyone gives to their mistakes! Oscar Wilde

67. Measuring and Minimizing Energy Consumption Dr Mike Brumm Brumm Swine Consultancy, Inc. North Mankato, MN [email_address] 507-995-4709 Blog: www.Mnpork.com