Unichem Laboratories Interview Questions and Answers

HVAC Supervisor oversees installation, maintenance, and repair of heating, ventilation, and air conditioning systems.

• Supervising HVAC technicians and contractors

• Ensuring compliance with safety regulations and company policies

• Developing maintenance schedules and overseeing repairs

• Troubleshooting HVAC systems and resolving issues

• Training staff on proper HVAC procedures

• Ordering necessary parts and equipment

• Maintaining accurate records of maintenance and repairs

Water cooled chiller is a mechanical device used to remove heat from a liquid via a vapor-compression or absorption refrigeration cycle.

• Removes heat from a liquid through a refrigeration cycle

• Used to cool water for air conditioning systems

• Helps maintain a consistent temperature in a building or industrial process

• Commonly used in large commercial buildings, hospitals, and industrial facilities

Approach temperature in a chiller is the temperature difference between the refrigerant leaving the evaporator and the water entering the condenser.

• Approach temperature is a key parameter in determining the efficiency of a chiller system.

• It is calculated by subtracting the entering water temperature of the condenser from the leaving refrigerant temperature of the evaporator.

• A lower approach temperature indicates better efficiency and performance of the chiller.

• For example, if...read more

District cooling system is a centralized system that provides chilled water for air conditioning to multiple buildings in a district.

• Centralized system for providing chilled water for air conditioning

• Serves multiple buildings in a district

• Reduces energy consumption and environmental impact

• Examples: Dubai District Cooling System, Singapore District Cooling System

A heat exchanger is a device used to transfer heat between two or more fluids, typically to cool or heat a process.

• Heat exchangers can be found in HVAC systems, refrigerators, and industrial processes.

• They work by allowing heat to transfer from one fluid to another without the fluids mixing.

• Common types include shell and tube, plate, and finned tube heat exchangers.

HVAC system stands for Heating, Ventilation, and Air Conditioning system, used to control the temperature, humidity, and air quality in buildings.

• HVAC system controls temperature, humidity, and air quality in buildings

• It includes components like furnaces, air conditioners, heat pumps, and ductwork

• Regular maintenance is important for efficient operation

• Examples of HVAC systems include central air conditioning units and rooftop units

The question is asking about your experience with calibration, loop checking, P&ID interpretation, control valve simulation, installation, termination, and pre-commissioning.

• Discuss your experience with calibration procedures and equipment

• Explain your process for loop checking and troubleshooting

• Demonstrate your ability to interpret P&ID diagrams

• Describe your experience with control valve simulation and installation

• Discuss your experience with pre-commissioning activities

• Prov...read more