Which of the following statements about using water as a heat-exchange fluid in flat-plate collectors is not true?

Renewable Sources of Energy Mcqs
BILAL KHATTAK0

A.It is convenient to obtain and handle
B.It has a large heat capacity
C.A large amount of electric power is required to run the water pump
D.Freeze protection can be obtained by mixing with ethylene glycol

Related Mcqs:

  1. A severe disadvantage of using a mixture of ethylene glycol and water as the heat-exchange fluid for a flat-plate collector is that
  2. Which of the following is usually not used as the heat exchange fluid in a flat-plate solar collector?
  3. 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.
  4. Specific heat is
  5. Evacuated flat-plate collectors are better than non-evacuated ones at high operating temperatures because
  6. 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.
  7. The percentage of water vapour present in the air compared to that required for saturation is the __________?
  8. The percent transmission of incoming solar radiation through the top cover plate of flat-plate collectors is typically
  9. Major modification required to produce temperature of – 200?C in a vapour compression refrigeration system using Freon 12 as refrigerant, is
  10. Which of the following is not a reason why water warms and cools much more slowly than land?

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