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CP Optimiser

Automatic device for balancing R717 condensing pressure against compressor efficiency

Automatic device for balancing R717 condensing pressure against compressor efficiency


Many refrigeration systems that use R717 (ammonia) as refrigerant and feature an evaporative condenser are operated using a fixed set point to maintain a constant condensing pressure. This is rarely ideal, as the energy consumption of the compressors typically increases by 3% for every °C the condensing pressure rises – shaft power consumption is directly influenced by condensing pressure. This impacts overall operating costs and plant efficiency. Reducing condensing pressure improves compressor efficiency, but itself also requires energy. Maximum overall efficiency stems from the best possible balance between compressor energy consumption and the energy required to reduce condensing pressure. The CP Optimiser automatically calculates this energy balance, taking into account changing loads and conditions. This paves the way to considerable savings on energy bills, which means the CP Optimiser normally pays for itself within a matter of months.

Features

  • Automatic operation based on inputs from just two sensors - temperature and humidity
  • Output signal can be connected directly to PLCs and frequency converters
  • No time-consuming programming or complicated technial set-up required
  • No manual intervention or special operator skills required
  • No special requirements for integration into new or existing R717-based refrigeration set-ups
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