Air Cooled Condenser
An air cooled condenser is the one wherein the removal of heat is done by air. It consists of steel or copper tubing through which the refrigerant streams. The size of the cylinder, for the most part, goes from 6mm to 18mm outside diameter, depending upon the size of the condenser. Copper tubes have excellent heat transfer capacity. We use steel tubes in the ammonia refrigeration system. The tubes are usually provided with plate-type fins to increase the surface area for heat transfer. Generally, fins are of aluminum because of its lightweight. The balance separating is very wide to decrease dust obstructing.
Working Of Air Cooled Condenser
Now we will discuss the working
- The condenser with a single row of tubing gives the most productive warmth move. Air temperature rises after passing through each row of tubes. The temperature difference between the air and vapour refrigerant decreases in each row of tubbing and therefore each row becomes less effective..
- Single column condenser requires more space than the multi-line condenser. The single line condenser is typically utilized in little limit refrigeration framework, for example, residential fridges, coolers, water coolers, and room forced air systems.
- The air cooled condenser may have at least two columns of tubbing, however, the condenser with up to six lines of tubbing is normal. A few condensers have seven or eight lines.
- Anyway in excess of eight columns of tubbing are typically not effective. This is on the grounds that the air temperature will be excessively near the condenser temperature to ingest any more warmth in the wake of going through eight columns of tubbing.
Types of Air Cooled Condenser
- Natural convection air cooled condenser- In this condenser, the warmth moves from the condenser coils to the air by normal convection. As the air interacts with warm condenser tubes. it retains the warmth from the refrigerant and accordingly the temperature of the air increments. The warm air, being lighter, the ascent up and cold air from underneath ascends to remove the warmth from the condenser. This cycle continues in the regular convection air cooled condenser. Since the pace of warmth transfer in characteristic convection condenser is slower subsequently they require an enormous surface territory when contrasted with the constrained convection condenser. The normal convection condenser is utilized distinctly in little capacity applications, for example, residential fridges freeze, water coolers, and room forced air systems.
- Forced condition air cooled condenser- the fan uses to force the air over the condenser coils to increase its heat transfer capacity.
1. Base mounted condenser- using propeller fans are mounted on the same base of the compressor, motor receiver, and other controls.
2. Remote condenser- uses on system above 10 tonnes and are available up to 125 tonnes.