EVAPORATIVE SUB-COOLING
WHAT IS IT? In essence, evaporative sub-cooling removes heat from the refrigerant circuit utilizing cool water. When engineered and installed correctly, system capacities increase, refrigerated air is crisper (lower dew point) while the compressor uses less electricity. Systems also require less maintenance and experience extended equipment life.
The Science
Water cooled systems have a 30% to 50% efficiency advantage over conventional air cooled systems because the operating performance of any air conditioning system is determined by the outdoor conditions in which the system operates. Conventional air-cooled equipment is rated by both the old EER (energy efficiency ratio) standard, and the SEER (seasonal energy efficiency ratio).
Industry Ratings
Commercial and water-cooled equipment use the EER standard. There is a two point difference between the two numbers. A 10 EER is the same as a 12 SEER. The SEER rating standard uses 83 degrees as the rating temperature for air cooled equipment. If you have a 12 SEER unit it is a 12 SEER only at 83 degrees. As the outdoor temperature gets hotter the unit will loose two points of SEER for every 10 degree increase.
The Benefits of Cool Water
A water-cooled unit’s efficiency is also affected by outdoor conditions, but not temperature. A water cooled unit’s performance is controlled by the humidity in the air. The hotter and dryer it gets, the better it works. You get greater efficiency and capacity increases automatically. Even when humidity levels increase, we still have the advantage.
WEST is BEST
In the dryer Western regions, plains of Texas, New Mexico, Arizona, Nevada, and California clients have experienced efficiency increases to over 60%. Not only effecting the amount of kWh consumed but in addition, the peak demand requirements when compared to similar air-cooled systems.
Water cooled systems have a 30% to 50% efficiency advantage over conventional air cooled systems because the operating performance of any air conditioning system is determined by the outdoor conditions in which the system operates. Conventional air-cooled equipment is rated by both the old EER (energy efficiency ratio) standard, and the SEER (seasonal energy efficiency ratio).
Industry Ratings
Commercial and water-cooled equipment use the EER standard. There is a two point difference between the two numbers. A 10 EER is the same as a 12 SEER. The SEER rating standard uses 83 degrees as the rating temperature for air cooled equipment. If you have a 12 SEER unit it is a 12 SEER only at 83 degrees. As the outdoor temperature gets hotter the unit will loose two points of SEER for every 10 degree increase.
The Benefits of Cool Water
A water-cooled unit’s efficiency is also affected by outdoor conditions, but not temperature. A water cooled unit’s performance is controlled by the humidity in the air. The hotter and dryer it gets, the better it works. You get greater efficiency and capacity increases automatically. Even when humidity levels increase, we still have the advantage.
WEST is BEST
In the dryer Western regions, plains of Texas, New Mexico, Arizona, Nevada, and California clients have experienced efficiency increases to over 60%. Not only effecting the amount of kWh consumed but in addition, the peak demand requirements when compared to similar air-cooled systems.