A solar water heating system with an SEF of 2.5 costs $2,500.00 fully installed and operational. What is the payback period when compared to a conventional electric water heater with an EF of .90 that costs $275.00 installed? (12.03 = a constant for the average kWh/day of electricity used in electric water heaters and 12ยข = 2014 national average cost of electricity in kWh)
A) 8.42 years B) 2.78 years C) 6.67 years D) 10.38 years
C
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Why, after the crushing defeat of its candidate in 1964, was the conservative right in America able to achieve a landslide victory for Ronald Reagan in 1980? Was this victory the result of a difference between Barry Goldwater and Ronald Reagan or of changes that had occurred in America and the world in the intervening 16 years? Explain.
What will be an ideal response?
In nature, beneficial mycorrhizae form with the roots of ________
A) grasses B) legumes C) coniferous trees D) broad leaf trees E) all of the above
When using negative logic ________
A) HIGH = 1 and LOW = 0 B) HIGH = 0 and LOW = 1 C) LOW = -1 and HIGH = 1 D) HIGH = 0 and LOW = -1
The TXV sensing bulb is mounted ____.
A. on the liquid line between the condenser and the TX valve B. at the inlet to the condenser C. on the suction line between the evaporator and the compressor D. on the compressor discharge line