Exterior Interior Interview Questions and Answers

Heat exchanger is a device used to transfer heat between two or more fluids of different temperatures.

• Types of heat exchangers include shell and tube, plate and frame, and finned tube.

• The type of fluid being used determines the material of construction for the heat exchanger.

• Baffles are plates or rods placed inside the heat exchanger to direct the flow of fluid and increase heat transfer efficiency.

Centrifugal pump is a mechanical device used to transport fluids by converting rotational kinetic energy to hydrodynamic energy.

• Centrifugal pump consists of an impeller, casing, and inlet/outlet ports.

• The impeller rotates and creates a centrifugal force that moves the fluid towards the outlet.

• NSPH stands for Net Positive Suction Head and is a measure of the pressure required at the inlet to prevent cavitation.

• Cavitation occurs when the pressure at the inlet drops below the va...read more

Reflux ratio is the ratio of liquid reflux to the distillate and affects the separation efficiency of a distillation column.

• Reflux ratio is a key parameter in distillation column design and operation.

• It is defined as the ratio of liquid reflux to the distillate.

• Increasing the reflux ratio increases the purity of the distillate but decreases the distillate flow rate.

• Decreasing the reflux ratio decreases the purity of the distillate but increases the distillate flow rate.

• Optima...read more

Reflux ratio is the ratio of liquid reflux to the distillate. Optimum reflux ratio is the minimum reflux ratio that gives the desired purity.

• Minimum reflux ratio is the ratio at which the desired purity is achieved.

• Reflux ratio is important in distillation process to achieve desired purity.

• Optimum reflux ratio is the minimum reflux ratio that gives the desired purity.

• Reflux ratio can be calculated using the McCabe-Thiele method.

• Reflux ratio affects the efficiency of the disti...read more

Pump is a mechanical device that moves fluids from one place to another. Valve is a device that controls the flow of fluids.

• Types of pumps include centrifugal, positive displacement, and axial flow pumps.

• Types of valves include gate, globe, ball, and butterfly valves.

• Pumps are used in various applications such as water supply, oil and gas, and chemical processing.

• Valves are used in industries such as power generation, oil and gas, and water treatment.

A distillation column is a vertical vessel used for separating a mixture of liquids into its individual components.

• It works on the principle of differential boiling points of the components in the mixture.

• The mixture is heated and vaporized, then the vapor rises up the column and condenses on the trays or packing material.

• The condensed liquid is then collected and separated into its individual components.

• Distillation columns are commonly used in the chemical, petrochemical, a...read more

T-x-y diagram is a graph that shows the phase behavior of a mixture of three components.

• T-x-y diagram is used in chemical engineering to analyze the behavior of a mixture of three components.

• It shows the relationship between temperature, composition, and pressure.

• The diagram is used to determine the conditions under which a mixture will be in a single phase or multiple phases.

• It is also used to determine the composition of each phase in a mixture.

• An example of a T-x-y diagram...read more