Using Pre Cooling Misting Systems for Air-Conditioning Units & Buildings
In the hot weather, there is a more extensive use of air-conditioning units for both residences and other buildings. However, in days in extreme heat, it becomes more difficult for an air conditioning system or unit to circulate enough cool air to where it is needed. This is because the air-conditioner has to significantly increase its effort to drive cool air through the system to compensate for the extreme heat outdoors that will pushes itself indoors. This results in a substantial increase in the usage of electricity as well as shortening the lifespan of the air conditioning unit. Over a period of time, extreme heat causes the eventual shut down of the air conditioning units, due to excessive loads on the condensing coil.
Outdoor cooling misting systems have proved to be an effective way to “pre-cool” the air as it enters the air conditioning unit. The air-conditioning unit being cooled by a misting system will operate more efficiently and prolong the life of the air-conditioning unit. Pre-cooling misting systems can reduce the temperature of the air-conditioning units by approximately 30%, resulting in substantial improvements in the operating performance of the air conditioning units.
Pre-cooling with misting systems is accomplished by quick absorption of heat by the mist before air enters the air-conditioning units. These cooling results are caused by “flash evaporation”.
Even in parts of the country with high humidity, misting systems can be very effective at reducing energy usage in air conditioning units. Misting systems are safe and effective in all climate conditions including high humidity environments.
Through the process of flash evaporation, misting vapor evaporates almost immediately causing no water buildup problems for the coils of the air-conditioning units. For immediate evaporation of the mist at light commercial or residential sites, a low pressure (typically 180 psi) mid-pressure pump can accomplish the job. However, for immediate evaporation of mists in buildings and other industrial sites, it important to use high-pressure, (1000psi) industrial pumps since these air conditioning units are configured differently.
Many commercial and industrial buildings have different electrical rates for peak hours and non-peak hours. Since the key variables that drive peak time electric demand, such as temperature cannot be precisely known ahead of time, pre-cooling of building and air-conditioning units can assure saving on utility costs now matter when the units are used. Misting systems can also be used to pre-cool AC-refrigeration units, towers, transformers and direct heat exchange pre-cooling stations.
Pre-cooling misting systems have been used in various applications, including the following:
- School Systems
- Office Complexes
- Movie Complexes
- Shopping Centers
- Casinos Factories
- Manufacturing Plants
- Oil Companies
- Convention Centers
- Wine Companies
- Hotel Resorts
- Airport Terminals
- Military Bases
- Shopping Centers
- Office Buildings
The main benefit of using pre-cooling misting system for industrial and commercial air-conditioning units is the reduction in energy costs of up to 30%. The other major benefit is the prolonging of the lifespan of the air-conditioning unit. Pre-cooling systems allow air conditioning units to operate at peak capacity even in excessive heat.