Condenser is crucial for cold storage but do you know ‘how does a condenser work in cold storage.’ The main function of a condenser is to allow temperature refrigerant vapor and high pressure to condense and release heat.
What is the use of a condenser?
A condenser carries out a change of phase at high pressure and temperature from gas to liquid. The condenser pipes should be robust to bear temperature and pressure gradients. It is the reason you must know which company makes cold storage and buy high-quality condenser pipes. Condenser pipes liquefy and cool the high pressure into vapor.
How does a condenser work in cold storage?
A condenser is good at heat exchange efficiency. It acts as a heat sink determining the cold storage plant efficiency. The cold storage plant working is as follows:
- The compressor in cold storage compresses refrigerant vaporized to high temperature and high pressure, raising the refrigerant boiling point.
- The condenser liquefies the refrigerant vapor to a high-temperature and high-pressure state. Here heat rejection takes place.
- The condenser collects condensate in a reservoir and passes through an expansion valve. In this process, the temperature and pressure decrease from the earlier state.
- The liquid refrigerant low-pressure allows the passing of the heat of refrigerated space hot air, and it starts evaporating the refrigerant liquid. Thus the cooling is felt, and the atmosphere heat decreases.
- Blowers circulate to store vegetables and fruits in the chilled air and keep them fresh.
Contact NSSPL, their technicians and engineers can give a clear briefing on the condenser working.
Working of condensers
Condenser design is in such a way that from a working fluid, they transfer heat to the surrounding air or a secondary fluid. The condenser during the phase changes relies on the heat transfer efficiency during the vapor condensation into liquid.
Condenser Fan
A condenser fan is on frost-free refrigerators. In the cabinet bottom, there is the condenser coil. The fan draws cool air through the front grille, while the same is in circulation through condenser coils. It is also out of the front grille into the room.
Copper Tubing
Copper Condenser Tubes are in evaporators and condensers in sugar refineries. Deoxidized copper transfer heat from steam to air or water due to its excellent resistance to corrosion.
Functions of condenser types:
The condenser is in three types evaporative, air-cooled, and water-cooled.
Air-cooled Condenser
This condenser type uses air to reject heat from the system, and it is an external fluid. They have copper coils and are into two subsets, natural and forced convection.
- Natural Convection- Here, the air contacts warm coils and absorbs the refrigerant heat within the coil, thereby increasing the air temperature. The warm air becomes lighter and goes up, replacing it with cold air, and the heat eliminates. Thus the cycle becomes continuous, and the refrigerant loses heat.
- Forced Convection- A blower or a fan removes heat here from the refrigerant coils. The forced convection condenser types are in water coolers, air conditioners, and packaged air condition plants.
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Water-cooled condenser
This condenser type removes heat using water as the fluid. These condensers are suitable in places having no shortage of water supply. They are in three kinds:
- Double tube- These condensers are inside a refrigerant tube and have water. The water absorbs the heat of the refrigerant. However, the cooling process is natural convection as the refrigerant tube contacts natural air circulation. Double-tube condensers were a thing of the past. It had several gaskets and flanges in the heat exchangers that frequently had maintenance issues.
- Shell and Coil Condensers– In this condenser a finned water tubing coil is in a welded shell. The hot refrigerant flows within the shell, while there is the circulation of cool water within the coil. It is inexpensive and compact.
- Shell and Tube Condensers– In this condenser type, rejecting heat is through a cylindrical shell featuring a water tube. Here the water pumping is through the pipes, and the refrigerant flows in the shell. These condensers are easy to maintain as the fins installation in pipes assures better heat transfer.
There are horizontal shell and tube condensers widely used. However, the tube and vertical shell condensers are useful in large-capacity systems with ammonia. Thus, it allows tube cleaning with running plants.
Evaporative Condensers
This condenser type is a mix of water and air-cooled. It uses water and air as its condensing medium. The water spray evaporates over coils, and the required heat for vaporizing is from the refrigerant heat. These condensers are in places facing water scarcity. Here the water drops into a sump, making up for the evaporated amount.
Wrapping up
Condensers are in different types helping to remove heat. Learning ‘how does a condenser work in cold storage’ is indispensable for any cold storage owner. None of these condenser types has an advantage over the other.
Know the functioning and its merits by contacting NSSPL!
