10+ Jay Air System Interview Questions and Answers

Logarithmic temperature difference is used to analyze heat exchangers in counter current and co current flow. Graph shows efficiency vs temperature difference.

• Logarithmic temperature difference is a method to analyze heat exchangers in counter current and co current flow

• In counter current flow, the temperature difference decreases along the length of the exchanger, resulting in a steeper curve on the graph

• In co current flow, the temperature difference remains constant along t...read more

Pump flowrate calculation involves using the formula Q= ha

• Calculate the flow rate (Q) by multiplying the head (h) by the area of the pipe (a)

• Ensure units are consistent (e.g. meters for head and square meters for area)

• Consider factors like friction loss and pump efficiency in the calculation

A reboiler is a heat exchanger used in a distillation column to generate vapor from the liquid feed at the bottom of the column.

• Reboilers can be classified into different types such as kettle reboilers, thermosiphon reboilers, and forced circulation reboilers.

• The type of reboiler used depends on factors like the properties of the feed, desired product purity, and energy efficiency.

• For example, a kettle reboiler is commonly used for simple distillation processes, while a force...read more

The two laws of thermodynamics are the first law, which states that energy cannot be created or destroyed, only transferred or converted, and the second law, which states that the entropy of an isolated system always increases over time.

• First law of thermodynamics: Energy cannot be created or destroyed, only transferred or converted.

• Second law of thermodynamics: The entropy of an isolated system always increases over time.

• The first law is often summarized as 'energy conservat...read more

PHE heat load can be calculated by considering the flow rate, specific heat capacity, and temperature difference of the fluids involved.

• Calculate the mass flow rate of the fluids passing through the Plate Heat Exchanger (PHE).

• Determine the specific heat capacity of the fluids.

• Find the temperature difference between the hot and cold fluids.

• Use the formula: Q = m * Cp * ΔT, where Q is the heat load, m is the mass flow rate, Cp is the specific heat capacity, and ΔT is the temper...read more

DP type LT stands for Differential Pressure type Level Transmitter used for measuring level in tanks or vessels.

• DP type LT measures level by detecting the pressure difference between two points in a vessel.

• It consists of two pressure sensors connected to the top and bottom of the tank.

• The configuration involves setting the zero and span points to calibrate the transmitter.

• Commonly used in industries like oil & gas, chemical, and water treatment.

• Example: Rosemount 3051S DP Lev...read more

Installation of DPT in steam line involves proper mounting, calibration, and protection against high temperatures.

• Ensure proper mounting of the differential pressure transmitter (DPT) in the steam line to accurately measure pressure difference.

• Calibrate the DPT regularly to maintain accuracy in steam pressure readings.

• Use heat-resistant materials and insulation to protect the DPT from high temperatures in the steam line.

• Consider installing a steam trap upstream of the DPT to ...read more

The latest update in Bodal Chemicals is the acquisition of a new manufacturing plant in Gujarat.

• Bodal Chemicals recently acquired a new manufacturing plant in Gujarat to expand their production capacity.

• The acquisition is expected to enhance Bodal Chemicals' presence in the market and increase their competitiveness.

• This strategic move aligns with Bodal Chemicals' growth strategy and vision for the future.

Pump flow rate can be calculated by multiplying the pump's displacement per revolution by the pump's speed.

• Calculate the pump's displacement per revolution (in cubic inches or cubic centimeters)

• Determine the pump's speed (in revolutions per minute)

• Multiply the displacement per revolution by the speed to get the flow rate (in cubic inches or cubic centimeters per minute)

Heat transfer is the process of energy moving from a warmer object to a cooler object.

• Heat transfer can occur through conduction, convection, or radiation.

• Conduction is the transfer of heat through direct contact between materials, like a metal spoon heating up in hot soup.

• Convection is the transfer of heat through the movement of fluids, like boiling water in a pot.

• Radiation is the transfer of heat through electromagnetic waves, like the sun warming the Earth.

• Heat transfer i...read more