Author Question: Why does a heat pump need two metering devices? A) One metering device is used for first-stage ... (Read 85 times)

shenderson6 · **on:** Jul 24, 2018

Why does a heat pump need two metering devices?

A) One metering device is used for first-stage heat and another for auxiliary heat.
B) Two metering devices provide increased refrigerant flow at low ambient temperatures in heat.
C) One metering device is used for the refrigerant circuit and another for the heat strips.
D) One metering device is used for the cooling cycle and one for the heating cycle.

Question 2

What type of measurement is a grain?

A) A grain is equal to one drop of water.
B) A grain is a small measurement of weight.
C) A grain is a small measurement of volume.
D) A grain is theoretically extrapolated by multiplying the cube root of the wet-bulb measurement times the dry-bulb temperature measurement.