Compressors make up the bulk of the energy demand in industrial refrigeration systems. This means to conserve energy, the compressor needs to be carefully selected to ensure that it can be staged and sequenced efficiently. A careful consideration would be to use screw compressors when operating at full load. However, at part load, a reciprocating compressor has better energy efficiency.
Condensers
Condensers are the second highest energy usage component. To control the energy used in a condenser, a VFD (variable frequency drive) should be attached to the condensers motor. This provides several advantages and will give better pressure control. By reducing the motor speed to match the condensers capacity, you will save energy on horsepower during non-peak conditions.
Evaporators
Hot gas defrost is among the most common way to defrost the evaporators coils. The process works by circuilating hot refrigerant gas through the coils which in turn, melts the accumulated frost. By defrosting too much, energy becomes wasted. Or the other problem is by not defrosting enough, the evaporators
cannot push out the cool air because of the excess frost build up. ICS uses a precise algorithm to perform hot gas defrost operations by using various sources to determine when is the proper time to defrost your evaporators.
Pumps & Equipment
Equipment sizing is thee most critical aspect of designing a refrigerant system. That's why it is important to understand the process before beginning new construction or a retrofit to the existing setup. By knowing which correct parts to use, it can save you energy costs as well as cost of expensive equipment parts in the future.
Overall Ways ICS Helps Bring Down Energy Costs
ICS will evaluate your bill and calculate your savings, reducing your demand up to 30%. By optimizing set points and adjusting suction pressure on the compressors by 1 degree could save your company 1.5% on that compressor. Compressors should be sized to match the loads accordingly. Two equally sized compressors, each running at 50% capacity, can require 30% more horsepower than one compressor running at 100% capacity.
ICS recommends the use of VFD's on condenser motors to stabalize head pressure. This also prevents the motors from intense start/stop cycles. This in turn, reduces energy by eliminating start/stops constantly and also helps the mechanical wear on your machines.
Remote controls allow systems to save a significant amount of energy. This includes pressure sensing, temperature sensing, occupied ventilation for engine rooms, motor control, compressor utilization, evaporator defrost control and much more.
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