Process Cooling and Refrigeration Systems Tips

Energy-Saving Tips Cards

Picture of energy tip card

Download our hot weather energy-saving tips cards and reduce electricity costs as well as protect the environment.

No Cost

  • Consider load shifting during periods of high-energy use and/or using thermal storage during periods of low-energy use to reduce the total energy demand.
  • Eliminate heat losses from leaks and improper defrosting. This action can reduce refrigeration system energy use by 10 to 20%.
  • Freeze products in batches rather than continuously. This measure can reduce freezing process energy use by up to 20%.

Good Investment

  • Add evaporator capacity to reduce evaporator approach temperature and raise suction pressure.
  • Install a thermosyphon cooling system to cool the compressor oil.
  • Install additional condensing capacity to reduce discharge pressure. Reducing condenser pressure by 10 psi can decrease refrigeration system energy use per ton of refrigeration by about 6%.
  • Installing variable speed drives in place of constant speed drives can reduce cooling system energy use by 30% to 50%, depending on load profile.
  • Insulate cooler/freezer area.
  • Invest in mechanical subcooling — an effective method of cooling liquid refrigerant below saturation pressure in order to increase system capacity and improve efficiency. Energy savings can be achieved up to 25%.