lesson 2

Question 1

Disadvantages of non-concentrating collectors

Answer 1

1. large heat losses by conduction and radiation because of large area
2. no tracking of sun
3. low water temperature achieved

Question 2

advantages of non-concentrating collectors

Answer 2

1. it utilize the beam as well as diffuse radiation for heating
2. less maintenance

Question 3

Factors that affect performance of the system

Answer 3

1. Incident solar radiation
2. Number of covers
3. Spacing
4. Collector tilt
5. Selective surface
6. Inlet temperature
7. Dust on cover plate