Gas Fitter Practice Test

What are the main components of a gas-fired refrigerator?

1. generator, evaporator, radiator, absorber

2. generator, evaporator, capacitor, absorber

3. generator, evaporator, compressor, absorber

4. generator, evaporator, absorber, condenser

The correct answer is: generator, evaporator, absorber, condenser

A gas-fired refrigerator operates primarily on the principles of thermodynamics and utilizes specific components that enable it to function efficiently without the need for electric power. The correct components of a gas-fired refrigerator include the generator, evaporator, absorber, and condenser. The generator is where the refrigerant is heated, often using gas to create ammonia gas from the ammonium solution. This separation is key to the refrigeration cycle. The evaporator is where the refrigeration effect takes place, absorbing heat from the interior of the refrigerator to keep it cool. The absorber then takes the ammonia gas and dissolves it back into the solution using water, while the condenser plays a crucial role by allowing the ammonia gas to cool and liquefy, ready to return to the generator. This cycle is continuous and essential for the operation of a gas-fired refrigerator, highlighting the importance of each component. In contrast, the other options include terms that do not accurately represent the components of a gas-fired refrigerator, such as the mention of a capacitor or compressor, which are typically found in electric refrigeration systems rather than those that rely on absorption cooling principles.