Referring to the illustrated psychrometric...

Question 1 / 2066636eee28f7522a1c51f129

Question 1 of 2066636eee28f7522a1c51f129

Referring to the illustrated psychrometric chart, suppose during the cooling season that air passes over a cooling coil with a mean surface temperature above the dew point temperature, and this results in sensible heat loss with no change in moisture content. What statement represents the direction of the air conditioning process line? Illustration RA-0022

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66636eee28f7522a1c51f129

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🔍 Key Concepts

• Sensible heat loss vs latent heat (moisture removal) on a psychrometric chart • What it means on the chart when there is no change in moisture content (humidity ratio / grains of moisture stay constant) • How cooling without dehumidification is shown in terms of dry‑bulb temperature and process line direction

💭 Think About

• On this chart, which axis represents dry‑bulb temperature and which side/scale represents grains of moisture per pound of dry air? • If the air is cooled but no moisture is removed (coil warmer than the dew point), which property is changing and which stays fixed on the chart? • When one property changes while the other stays fixed, does the process line move horizontally or vertically, and in which direction does it move when the air is being cooled?

✅ Before You Answer

• Identify which way you move on the chart when humidity ratio (grains of moisture) is constant – this is critical before choosing an option. • Confirm that a cooling process must show a change in dry‑bulb temperature toward a lower value on the x‑axis. • Verify that the chosen option matches both: constant moisture content and decreasing dry‑bulb temperature.

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Question 1 of 20

The air conditioning process line is vertical with the coil outlet above the coil inlet.

The air conditioning process line is vertical with the coil outlet below the coil inlet.

The air conditioning process line is horizontal with the coil outlet to the left of the coil inlet.

The air conditioning process line is horizontal with the coil outlet to the right of the coil inlet.

Question 1 / 2066636eee28f7522a1c51f129

Question 1 of 2066636eee28f7522a1c51f129

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Question 1 of 20

66636eee28f7522a1c51f129

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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