The pressure of a saturated refrigerant can accurately be predicted:
A) By multiplying the refrigerant's molecular weight times the average molecular kinetic speed.
B) By comparing its temperature to the corresponding pressure on a pressure-temperature chart.
C) By multiplying the ratio of liquid to vapor times the refrigerant's base saturation temperature.
D) Only if the amount of refrigerant in the system is known.
B
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The median annual earnings of wastewater treatment plant operators was _______ in May 2010
A) 40,770 B) 55,460 C) ?59,770 D) 77,400
The Dark Age of Greece is so-called because
a. it was primitive. b. during this period Greece endured an agrarian crisis. c. the Greece of this period left few material traces. d. the polis did not yet exist in Greece.
As the refrigerant passes through the condenser, it ________________
A) Condenses from a gas to a liquid B) Gives up latent heat to the air flow C) Is cooled by ambient air D) All of these
A process stream refers to the flow of a __________.
A. gas B. liquid C. both a and b