Process Cooling and Refrigeration Systems Tips
Browse Tips
Energy-Saving Tips Cards
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%.