1. A convector relies mainly on natural convection currents to deliver heat. Why does placing furniture directly in front of the convector reduce its heat output?
- A. It blocks cool air from entering the bottom and warm air from leaving the top, stopping the air current
- B. It forces the radiator steam trap to close early, which then prevents the condensate from draining out
- C. The radiant waves from the warm fins are reflected straight back into the closed metal cabinet
- D. The added mass cools the steam inside the finned tube before it is able to fully condense to water
Show the answer and explanation
Answer: A. A convector heats air by natural convection: cool air enters the open bottom, is warmed by the finned tube, and rises out the top grille. Blocking the cabinet interrupts this air circulation, so less air is heated and the output drops.