Save $2100.00 a Season with a two pump installation.
Norlock implements a two pump system designed to maximize efficiency
while managing secondary refrigerant circulation.
The demands on the brine circulation system are not constant. Less than 50% of the time an arena ice plant is operating at its maximum capacity, even during start up or under heavy loads. At capacity an ice plant requires a 25-hp pump to circulate the chilled brine. Typical in most arena installs, one big brine pump runs continuously costing approximately $6000 per season.
The fact is, proper ice management only requires that much force less than 50% of the time.
Significant energy savings can be achieved by running with a smaller pump during times of lighter loads.
For example, running with a 7.5-hp @ 50% of the time saves 42,298 kW.h or more importantly $2100 per season.
Besides saving energy, the standby capability of an extra pump could be a real ice saver in the event of a pump failure.
A little forethought can result in an extra
$500 a year in the pocket.
Condenser Fans
A typical arena evaporative condenser fan has a 10 hp fan motor, but 95% of the time the load can be handled by a smaller hp motor. Norlock uses a second, smaller fan motor to run during that low demand period, saving an additional $500.00 year in electrical bills.
Norlock takes further control with the use of a variable speed drive on the motor, fine tuning the head pressure, maintaining a balance within a few pounds of set point. Again, the standby capability of any extra fan motor could be a real ice saver.
Lower Head Pressure
By lowering the head pressure a number of positive effects take place.
1. As the compression ratio falls, so will the amperage draw to the drive motors which will result in electrical savings.
2. The compressors becomes more efficient with the lower head pressure.
3. As the heat of compression becomes less the condenser load is further reduced.
4. With the lower temperature refrigerant entering the chiller, there will be less energy wasted to cool the refrigerant from the condensing temperature to 10 degrees F which is approximately the desired refrigerant temperature for a normal secondary refrigerant.
Contact Norlock Refrigeration today to start Saving Money!