The function of condenser in refrigeration cooling system is _________.
to reject heat out of the system
Understanding the Function of a Condenser in a Refrigeration System
A refrigeration cooling system works by moving heat from a cold place to a warmer place. This process requires different components, and each has a specific job. The condenser is a crucial part of this system.
Let's look at the role of the condenser in the typical vapor compression refrigeration cycle:
- Evaporator: The refrigerant absorbs heat from the space to be cooled, turning into a low-pressure vapor.
- Compressor: The compressor increases the pressure and temperature of the refrigerant vapor.
- Condenser: The high-pressure, high-temperature refrigerant vapor flows into the condenser. Here, it releases the absorbed heat (from the evaporator) plus the heat added by the compressor to the surrounding environment (like air or water). As it loses heat, the refrigerant cools down and changes phase from a vapor back into a liquid. This process of releasing heat is called heat rejection.
- Expansion Valve (or Throttle Valve): The high-pressure liquid refrigerant passes through the expansion valve, which reduces its pressure, causing it to become a low-pressure liquid-vapor mixture before entering the evaporator again.
Based on this cycle, the primary function of the condenser is where the refrigerant gets rid of the heat it collected from the cold space. This heat is rejected to the outside environment, allowing the cycle to continue and cool the desired space.
Analyzing the Options:
- to give external work to the system: This is incorrect. Work is typically put *into* the system by the compressor.
- to convert liquid refrigerant into vapour refrigerant: This process happens in the evaporator, not the condenser. The condenser converts vapor into liquid.
- to reject heat out of the system: This aligns perfectly with the function of the condenser in the refrigeration cycle. It's where heat leaves the refrigerant and the overall system.
- to give heat into the system: Heat is added to the system in the evaporator (from the space being cooled). The condenser removes heat from the system.
Therefore, the function of the condenser in a refrigeration cooling system is to reject heat out of the system.
Important Questions from Vapour Compression (V-C) Cycle
A refrigeration plant works on an ideal vapour-compression refrigeration cycle with refrigerant as R-12 and develops a refrigeration capacity of 10 TR. If the refrigeration effect produced is 100 kJ/kg, what will be the mass flow rate of the refrigerant? [Assuming, 1 TR = 3.5 kW]
In vapour compression refrigeration system, the effect of liquid refrigerant under cooling is to
If vapour is NOT superheated after compression, it is called ________.
The amount of heat removed in the evaporator per unit mass flow of refrigerant is called:
In a vapor compression system, the highest temperature of the refrigerant during the cycle occurs after
