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Please answer the following questions in \"Energy Efficiency
Basics\" multiple choice:
السؤال 16
A 20 kW electric...
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Electrical Engineering
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Please answer the following questions in \"Energy EfficiencyBasics\" multiple choice:
السؤال 16
A 20 kW electric roof top A/C unit (RTU) is 10 years old, andhas a COP of 2.0 . It operates at full load for 3,000 hours a year.The electric cost is $0.10 per kWh. If this to unit to be replacedwith a new 20 kW, what is the minimum value of COP for the new unitto reach an annual savings of $1,500?
3.5
4.0
4.5
Can not be determined
السؤال 18
The refrigerant (R-134a) is the new replacement of therefrigerant (R-22) as it is less harmful to the environment.
True
False
السؤال 19
The Level-1 ASHRAE energy audit is sometimes called thecomprehensive audit, detailed audit or technical analysisaudit
True
False
Answer & Explanation
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4.4 Ratings (600 Votes)
ANSWER 16 COP HEAT REMOVEDQ ELECTRICAL WORK INPUT W QW FOR OLD 20 kW AC RTU WHICH OPERATES FOR 3000 HOURS A YEAR ELECTRICAL WORK INPUT W POWER
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