Duty of Condenser in Cooling System
In the cooling system, the heat that the cooler receives from the evaporator and the heat that is added to the compressor during the compression process is taken out of the system by the condenser
Thus, by becoming liquid, the refrigerant is pressurized and expanded again by means of expansion valve and brought into the state where the heat can be taken from the evaporator.
Working Principle of Condenser
The heat exchange in the condenser can be considered to occur in 3 phases:
- Heat transfer
- Condensation of refrigerant
Approximately 85% of the condenser area serves condensation, which is the main task of the condenser. 5% of the whole area serves to remove the heat and 10% of the area serves for subcooling.In air-cooled condensers, it is often necessary to use refrigerating storage (receiver) to obtain and store condensing refrigerant from the condenser. The aim here is not to waste the useful area of the condenser for storing liquids. If possible, only the overcooled part should be filled with liquid.
- There are two types of condensers, air-cooled and water-cooled.
Air Cooled Condensers
Vertical Type Condensers
Horizontal Type Condensers
V Type Condensers
Water Cooled Condensers;
Soldered Plate Heat Exchangers and Their Working Principle
The cooler exchanger enters the upper right inlet as hot gas and begins to condense on the surfaces of the pipes. The refrigerant is condensed from the lower right outlet.
In the picture, the light and dark blue arrows in the closed condenser show the location of the cooler fluid (like water-glycol) connections. The light and dark red arrows indicate the cooler connections.
Shell Type Heat Exchangers and Working Principle
The cooler shell enters the tube heat exchanger as hot gas through the lower left inlet and begins to condense on the surfaces of the pipes. The refrigerant is condensed from the lower right outlet.
In the picture, the closed shell tube heat exchanger shows the location of the light green cooler and the light blue arrows show fluid cooler (like water-glycol) connections.
Consider the following, when choosing the installation location:
The air passing through the condenser must be freely distributed and should not encounter with back pressure (the wall just in front of the fan, etc.).
At the same time, the heated air coming out of the condenser must be avoided by choosing the installation location, which will cause the condenser to bypass again.