Ellora Project Consultants Interview Questions and Answers

Air conditioning systems work by removing heat from indoor air and transferring it outside, cooling the air in the process.

• Air conditioning systems use refrigerant to absorb and release heat.

• The refrigerant circulates between the indoor and outdoor units, absorbing heat indoors and releasing it outdoors.

• The indoor unit blows air over cold coils to cool it, then circulates the cooled air throughout the space.

• The outdoor unit releases the absorbed heat outside, completing the c...read more

An air conditioning system is a technology that cools and dehumidifies indoor air for comfort and/or to maintain a specific temperature.

• Air conditioning systems use refrigerants to absorb and release heat.

• They consist of components such as compressors, condensers, evaporators, and expansion valves.

• Examples include central air conditioning systems, window units, and split systems.

AHU stands for Air Handling Unit. It is a device used to regulate and circulate air as part of a heating, ventilation, and air conditioning (HVAC) system.

• AHU is responsible for filtering, heating, cooling, humidifying, dehumidifying, and distributing air throughout a building.

• It typically consists of a blower, heating or cooling elements, filters, dampers, and sound attenuators.

• Examples of AHU include rooftop units, packaged units, and ducted split systems.

Sensible heat is heat that causes a change in temperature, while latent heat is heat that causes a change in state.

• Sensible heat is the heat that can be felt and measured with a thermometer.

• Latent heat is the heat absorbed or released during a change of state without a change in temperature.

• Examples of latent heat include the heat absorbed during evaporation of water or the heat released during condensation of steam.

Yes, a heat load sheet is a document used to calculate the amount of heating or cooling required for a space.

• Gather information on the building's dimensions, insulation, windows, and occupancy

• Calculate the heat gain or loss from each component using relevant formulas

• Sum up the total heat load to determine the HVAC system capacity needed

• Include factors like climate, equipment, and ventilation in the calculations

Types of chillers include air-cooled chillers, water-cooled chillers, absorption chillers, and centrifugal chillers.

• Air-cooled chillers use air to remove heat from the refrigerant.

• Water-cooled chillers use water to remove heat from the refrigerant.

• Absorption chillers use a heat source to drive the refrigeration cycle.

• Centrifugal chillers use a rotating impeller to compress the refrigerant.