The air conditioner is featured with necessary instruments.
Some certain pressure transducers and T-type thermocouples
are fixed at proper sites to measure the pressure
and temperature of the refrigerants and air. The accuracy of
pressure transducers is 0.25%FS and the accuracy of thermocouples
is 0.5 K. Additionally, an electrical power
analyzer with an accuracy of 0.5% is adopted to record the
energy consumption. The uncertainties of cooling capacity
and EER are, respectively, 1.53% and 3.27%.