This presentation walks you through the dairy production process and opportunities for efficiency each step of the way. Learn more at http://mncerts.org/dairy

1. Energy Efficient Dairy
Production Technologies

2. Mission: We connect individuals and their communities
to the resources they need to identify and implement
community-based clean energy projects
CERTs:
Minnesotans Building a
Clean Energy Future

3. Energy Efficient Dairy
Production Technologies
Milk
Harvesting
Milk
Cooling
Cow
Comfort

4. VFD on Vacuum Pump

5.  Able to ramp the motor speed up and down to
match the actual vacuum level needed
 Usually replace a single-phase motor
with a three-phase motor
 You can de-rate a VFD for single-phase
motor
 Approx Cost: $7,000
 Payback ranges: 6 to 26 yrs
VFD on Vacuum Pump

6. VFD on Milk Pump

7.  Able to ramp motor speed up and down
to match vacuum level
 Used in combination with a plate cooler
for additional milk cooling
 Approx Cost: $3,600
 Payback: 3.6 to 11
VFD on Milk Pump

8. Plate Cooler (Pre-Cooler)

9. 9 Uses cold well water to pre-cool the milk
before entering refrigeration system
 Reduces heat refrig system has to remove
 Approx Cost: $3,600
 Payback: 5-6 years
Plate Cooler (Pre-Cooler)

10. Scroll Compressors

11.  Newer type of compressor. 15-20% more
efficient
 Fewer moving parts
 Digital or variable lobe reciprocating
 Approx Cost: $3,200
 Payback: 8-9 years
Scroll Compressors

12. Refrigeration Heat Recovery
for Water Heating

13.  Used to capture waste heat from
refrigerant
 Increases life of water heater
 Increases compressor efficiency
 Approx Cost: $3,100
 Payback: 9.6 years
Refrigeration Heat Recovery
for Water Heating

14. High Volume Low Speed Fans

15.  BIG fans with VFD and temp
sensors
 Down draft to keep cows cool
 Approx Cost: $5,000 installed.
 Payback: Varies
High Volume Low Speed Fans

16.  Efficient fans with VFD and
temp sensors
 Maintenance
 Approx Cost: $3,500
 Payback: Depends!
Circulation Fans with VFDs

17.  Better insulation prevents freezing and
avoids heating
 Must be properly installed – out of wind,
12” heat tube above frost line…
 Approx Cost: $1,300
 Payback: 2-5 yrs depending on condition
of old waterers.
Low/No-Energy Waterers

18.  Replacement of metal halides,
incandescent or high pressure sodium
lamps for T-8s, CFLs, or LEDs
 Approx Cost: Varies $1500-$2500
 Payback: 2.2
Energy Efficient Lighting