A.it has an extremely low specific heat
B.too much pumping power is required
C.it is toxic
D.it does not freeze at -1?C
Related Mcqs:
- Which of the following statements about using water as a heat-exchange fluid in flat-plate collectors is not true?
- 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.
- Which of the following is usually not used as the heat exchange fluid in a flat-plate solar collector?
- 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.
- 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 passes through a maximum with increase in the number of covers (glazings) used 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
- Addition of ethylene glycol into the water causes a depression in
- Which of the following is not a good way to improve the performance of a flat-plate solar collector?
- Which of the following is not a good way to provide freeze protection for a flat-plate collector system?
