HVAC 1

What is cold?

• More cold energy

• More heat energy

• Less cold energy

• Less heat energy

Which method being used in air-conditioning system in order to transfer the heat?

• Evaporation

• Vaporization

• Condensation

• None of the above

"The process of which liquid change into gas at below it's boiling point".

Above statement is correct to to determine the process of...

• Evaporation

• Vaporization

• Condensation

• None of the above

Which of the following statements is NOT correct about refrigerant R134a?

• It has a high boiling point

• It is non flammable

• It is non explosive

• More environmental friendly

Which statement about evaporator is correct?

• Change refrigerant from gas into liquid

• Part of high pressure circuit

• Located in the aircond housing

• Located in front of radiator

Which statement about receiver/drier is NOT correct?

• Storage of refrigerant is gaseous form

• Act as a filter

• Absorb moisture from the aircond system

• Located next to condenser

The expansion valve is regulated by the _____ of the cold liquid refrigerant, and the _____ in the circuit

• less, length

• pressure, length

• pressure, temperature

• temperature, pressure

Which of the following is correct statement about aircond compressor

• Driven by flywheel

• Often comes in 2 different types

• Compress liquid states of refrigerant

• Converts low pressure liquid to high pressure liquid

Which of the following statement is NOT correct about condenser?

• Located in front of radiator

• Refrigerant absorb heat from the surrounding here

• Convert gaseous refrigerant into liquid

• Part of high pressure circuit

Which of the statement about complete air-conditioning circuit below is correct?

• Heat being absorb by refrigerant at evaporator

• Heat being absorb by refrigerant at condenser

• Compressor can compress liquid

• Receiver/drier store refrigerant in gaseous state