Aarti Industries Process Engineer Interview Questions and Answers

Heat exchanger size is determined by flow rates, temperature changes, and heat transfer requirements.

• Calculate the required heat transfer using Q = mcΔT, where Q is heat transfer, m is mass flow rate, c is specific heat, and ΔT is temperature change.

• Consider the overall heat transfer coefficient (U), which depends on the materials and flow arrangement.

• Use the heat exchanger effectiveness to determine the size base...read more

I have applied my knowledge of chemical engineering principles in designing and optimizing manufacturing processes by analyzing reaction kinetics, heat transfer, and mass transfer.

• Utilizing reaction kinetics to determine optimal reaction conditions for maximum yield

• Applying heat transfer principles to design efficient heat exchangers for temperature control

• Optimizing mass transfer processes to improve separation e...read more

NPSH stands for Net Positive Suction Head in a centrifugal pump.

• NPSH is a measure of how much suction pressure is required at the pump inlet to prevent cavitation.

• It is important to ensure that the NPSH available (NPSHa) is greater than the NPSH required (NPSHr) for the pump to operate efficiently.

• NPSH is affected by factors such as pump speed, fluid properties, and system design.

• Cavitation can occur if the NPSH a...read more

Pumps are mechanical devices used to move fluids by converting mechanical energy into hydraulic energy.

• Types of pumps: centrifugal, positive displacement, diaphragm, gear, and screw pumps.

• Centrifugal pumps are commonly used in water supply systems.

• Positive displacement pumps are ideal for high-viscosity fluids, like in oil extraction.

• Diaphragm pumps are often used in chemical processing for their leak-proof design...read more

Distillation is a separation process that involves heating a liquid mixture to create vapor and then cooling the vapor to get a purified liquid.

• Types of distillation include simple distillation, fractional distillation, and steam distillation.

• Simple distillation is used for separating components with large boiling point differences.

• Fractional distillation is used for separating components with closer boiling point...read more

Types of impellers in centrifugal pumps include closed, open, semi-open, and vortex.

• Closed impeller: all flow enters and exits through the impeller blades

• Open impeller: flow enters through the center and exits along the blades

• Semi-open impeller: flow enters through the eye and exits along the blades

• Vortex impeller: flow enters through the eye and exits through the periphery

• Impeller selection depends on the applica...read more

Chemical Engineering Thermodynamics is the study of energy and its transformations in chemical processes.

• It involves the analysis of heat transfer, work, and energy flow in chemical systems.

• It helps in understanding the behavior of chemical reactions and the design of efficient processes.

• Thermodynamics principles are used to optimize process conditions and maximize energy efficiency.

• Examples include calculating he...read more