The steam grid humidifier works by A) Boiling water in a pan ...

[nevelica]

The steam grid humidifier works by
 
  A) Boiling water in a pan to steam
  B) Passing air over a wetted element
  C) Spraying water through nozzles and atomizing it to steam
  D) Introducing live steam into the air stream through a grid of orifices

Question 2

Poorly maintained humidifiers can become indoor air quality concerns because of
 
  A) mold and mildew growth
  B) increased static discharge around all electrical connections
  C) unintended chemical reactions with HFC refrigerants
  D) increased outgassing of volatile organic compounds

[Brummell1998]

Answer to Question 1

D

Answer to Question 2

A

[nevelica]

Thank you!

[Brummell1998]

Always glad to help...