An air conditioner with a fixed-restriction metering device is operating with an evaporator saturation temperature of 40°F and a suction line temperature of 42°F. The factory-specified superheat for the current operating condition is 12°F. After checking the airflow and determining that it is within specifications, the technician should:
A) Recover charge because the system is overcharged.
B) Add charge because the system is undercharged.
C) Leave the charge alone because it is cooling even better than factory specifications.
D) Move some of the charge from the low side of the system to the high side of the system to balance the charge.
A
You might also like to view...
A refrigerator is to cool 2 kg of water (at atmospheric pressure) from 40°C to 5°C. The coefficient of performance of the refrigerator is 3.10. Determine the work needed to operate the refrigerator during this cooling process.
Given: Water; m = 2 kg; T1 = 40°C; T2 = 5°C; B= 3.10 Assume: The water behaves as an incompressible substance with constant specific heats: c = 4.18 kJ/kg-K. For the water as a system, W = ?KE = ?PE = 0
Vents prevent trap seals from draining by _____.
a. decreasing air pressure b. equalizing air pressure c. limiting water pressure d. increasing air pressure
Individuals who give advice on the conservation of soil and water are Forest Service researchers
Indicate whether the statement is true or false
Convert the following absolute uncertainties to relative uncertainties.
a. 20.9 ± 0.4 b. 15.1 ± 0.8 c. 388 ± 23 d. 2.465 ± 0.009