| • |
Fix dripping hot water taps.
A hot tap dripping at one drip per second will cost
$50 per year in electricity. |
| • |
Keep boiler and steam systems
regularly tuned. |
| • |
Insulate hot water cylinders
and pipes. |
| • |
Repair dripping water taps. |
| • |
Recover store and reuse
heat from the used hot water. |
| • |
Install a timer on the hot
water system to heat water only when needed. |
| • |
Correctly size hot water
cylinders and reduce standing losses by only heating
water when necessary. |
| • |
Recover heat from the exhaust
of the vacuum pump or refrigerator. This can save
10% of the electricity demand of a milking shed
boiler system or approximately 4% of total electricity
demand. |
| • |
Consider use of solar energy
for heating water. |
| • |
Use waste heat from an ice
bank, if installed, to preheat the water and save
10% of this demand. |
| • |
Use heat exchangers to transfer
as much of the heat in the incoming milk to the
hot water supply as possible. Heat exchangers can
save 10% of the total energy demand of milking shed
hot water cylinders. The flow of milk can be regulated
through the heat exchanger using a variable speed
drive (VSD) pump; |
| • |
Use a de-superheater and
water cooled condensers in the refrigeration system
to preheat water for cleaning or to fill the hot
water cylinder. This can save 20% of the total electricity
required to heat water; and |
| • |
Use heat pumps that upgrade
either ambient energy sources or the energy in the
incoming warm milk stream. |