The main energy consumers in a water-cooled air conditioning system are the chiller, recirculating pumps, tower fans, and air handler fans.
and minimize energy costs by keeping the evaporator and condenser heat exchange surfaces clean and corrosion free.
A chiller transfers the heat “picked up” from the building by the chilled water system to the cooling tower, where it is discharged to the atmosphere.
temperature of the condensed refrigerant has a corresponding vapor pressure called the condensing pressure or condenser head pressure.
pressure that is higher than it should be for a specific load condition.
Deposition (fouling) on the condenser tubes reduces transfer, increases the condenser head pressure, and results in higher energy costs.
products, and suspended solids scrubbed from the air.
increased energy use depends on compressor type, actual operating head pressure, and percent operating load.
scale composition. It becomes clear that good microbiological control is vital for efficient chiller operation.
In diagnosing a high head pressure condition, all of these factors should be investigated as possible causes.
water. Again, the compressor must work harder, which increase energy requirements.