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What is the pressure drop across a metering device using R404A if the condensing temperature is 110°F and the evaporator temperature is 25°F?

A. 178 psig
B. 200 psig
C. 210 psig

Answer :

Final answer:

The pressure drop across a metering device using R404A with a condensing temperature of 110°F and an evaporator temperature of 25°F is 178 psig.

Explanation:

The pressure drop across a metering device can be calculated using the formula: ∈P = Pcondensing - Pevaporating, where Pcondensing is the pressure at the condensing temperature and Pevaporating is the pressure at the evaporator temperature.

In this case, the condensing temperature is 110°F, which is equivalent to 298.15K, and the evaporator temperature is 25°F, which is equivalent to 263.15K.

Using the formula, we can calculate the pressure drop: ∈P = 178 psig.

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