Shell Tube Evaporator for Air Cooled Chiller

Shell Tube Evaporator for Air Cooled Chiller

Design of Shell-and-Tube Evaporator

Shell: The outer casing that contains the refrigerant and is designed to withstand pressure.

Tubes: Inside the shell, there are multiple tubes through which the chilled liquid flows. The refrigerant evaporates inside these tubes.

Heat Exchanger: The heat transfer occurs between the refrigerant in the tubes and the secondary fluid (like water or glycol) flowing around the tubes.

Functionality

Heat Absorption: The evaporator absorbs heat from the secondary fluid, causing the refrigerant inside the tubes to evaporate.

Phase Change: The refrigerant transitions from a liquid to a gas, effectively removing heat from the system and cooling the fluid.

Operating Principle

Flow Configuration: The evaporator can be designed for either counterflow or parallel flow, optimizing heat exchange efficiency.

Refrigerant Circulation: The refrigerant circulates through the tubes, absorbing heat and lowering the temperature of the secondary fluid.

Benefits

High Efficiency: Shell-and-tube evaporators provide a large surface area for heat transfer, leading to improved efficiency in heat exchange.

Robust Design: They are durable and can handle high pressures and temperatures, making them suitable for various applications.

Easy Maintenance: The modular design allows for easier cleaning and maintenance compared to other types of evaporators.

Applications

Air-Cooled Chillers: Primarily used in systems that require effective cooling for buildings, industrial processes, and HVAC applications.

Refrigeration Systems: Common in commercial refrigeration, food processing, and chemical industries.