Understanding Solar Air Heaters

What is the purpose of a transparent cover in a solar air heater?

• To reflect solar radiation

• To block heat from escaping

• To provide structural stability

• To enhance the area of the absorber section

What is the ideal choice for a transparent cover in a solar air heater?

• Low iron glass

• Transparent plastic sheets

• Plexiglass

• Metal plate

What is the purpose of the absorber in a solar air heater?

• To soak up most of the radiation

• To allow air to come in

• To transfer heat effectively

• To provide thermal insulation

What is the advantage of using tin cans for creating absorber pipes in a solar air heater?

• They are readily available

• They have a thick wall thickness

• They reflect most of the radiation

• They are everlasting

What should be the distance between the absorber plate and the transparent cover for best results?

• 1 inch

• 2 inches

• 3 inches

• 4 inches

What is the purpose of the enclosure in a solar air heater?

• To allow air to come in

• To provide structural stability

• To enhance the area of the absorber section

• To transfer heat effectively

What can be placed in between the enclosure and the absorber pipe to increase the efficacy of the solar air heater?

• Newspaper

• Loft insulation

• Foam

• All of the above

What should be done to the absorber in a solar air heater to make it efficient?

• Paint it with shiny black paint

• Use a thick layer of paint

• Use copper tubing

• Increase the length of the absorber pipes

What is the purpose of the slot cut out at the bottom of the enclosure in a solar air heater?

• To allow air to come in

• To block heat from escaping

• To enhance the area of the absorber section

• To transfer heat effectively