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What is Close Loop Condensing

We at Thermco Energy Systems have understood the importance of evaporative close loop condensing. A Evaporative Fluid Cooling Tower can either cool the refrigerant directly or sub cooling it,  and then exchange the heat transfer utilizing a water/refrigerant heat exchanger. The Close Loop Condensing application is a part of our Sub Cooling solution. Generally used in the large buildings to cool remotely.

A close loop condenser system as we will refer to in our industry is a cooling system transferring the heat from a medium to a heat sink. This can be configured in a wide variety of designs ranging from fresh-water cooling, through evaporative fluid systems, to air cooling, including some other varies combinations.


The medium or coils as we call them are either cooled by using, forced air, freshwater pond, lake water, river, or Evaporative Fluid Cooling Tower, depending on the availability of resources. With different applications to achieve the removal of heat has it advantages and disadvantages. A wet system would use water and the evaporation process to carry off heat. Dry systems would use forced air in closed non-evaporative cooling system to carry off heat to the atmosphere. 


In air conditioning systems, air is typically distributed over heat exchangers, or coils, in air handling units, or other type of devices which cool the coils in its respective space, and then the cooler fluid is re-circulated back to be cooled again. This process is considered Close Loop Condensing. Utilizing air to cool is less efficient. Large companies, for years, have used water to cool. 


As technology has development in industry chilling the fluid by the use of water cooling instead of air cooling is recognized as most efficient. In this case the condenser does not cool the hot refrigerant with ambient air, but uses a cooling tower. Using this method offers a tremendous reduction in energy consumption and in most cases can also allow a reduction in the size of the condenser.


Some applications can be centralized, where each chiller serves multiple cooling needs, or separated where each application or machine has its own chiller. Each approach has its advantages. It is also possible to have a combination of both types if the cooling requirements are for the same applications. Condensers can be either water cooled, air-cooled, or evaporative cooled.


Evaporative Fluid Coolers, either water cooling the liquid directly or subcooling the fluid has a higher heat rejection at or near the air's wet-bulb temperature rather than the higher, sometimes much higher, dry-bulb temperature, resulting in a reduction in energy consumption to operate. Evaporative Fluid Cooling Towers implement water over the condenser coil to aid in condenser cooling, making the machine more efficient than a traditional air cooled machine.

Additional applications is Sub cooling the businesses other refrigerant equipment and the Pre-Cool Make Up Air.

Thermco Energy Systems