A.Use of a selective surface
B.Use of an anti-reflective coating
C.Use of three cover plate
D.Use of an evacuated collector
Related Mcqs:
- Which of the following is not a good way to provide freeze protection for a flat-plate collector system?
- Compare the heat loss between the absorber plate of flat-plate collector and the cover with that between the cover and the ambient air at steady state.
- Which of the following passes through a maximum with increase in the number of covers (glazings) used in a flat-plate solar collector?
- The efficiency of a flat-plate solar collector using water as a heat-exchange fluid is largest at which of the following temperature for the absorber plate? Assume Ta = 25?C.
- If the wind is blowing with a 10 kilometer per hour the dominant heat loss mechanism(s) between the top cover plate of flat-plate solar collector and the ambient air is / are
- Which of the following is usually not used as the heat exchange fluid in a flat-plate solar collector?
- What is the serious problem with using a thin plastic sheet as the glazing material in a flat-plate solar collector?
- The radiative heat loss between the top cover of flat-plate solar collector at a temperature of Tp(K) and ambient air at a temperature of Ta(K) is proportional to
- Evacuated flat-plate collectors are better than non-evacuated ones at high operating temperatures because
- The percent transmission of incoming solar radiation through the top cover plate of flat-plate collectors is typically
