Referring to the illustrated psychrometric...

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Question 1 of 2066636eee28f7522a1c51f12c

Referring to the illustrated psychrometric chart, suppose during the cooling season that air passes over a cooling coil with a mean surface temperature below the dew point temperature, and this results in sensible heat loss and dehumidification. What statement represents the direction of the air conditioning process line? Illustration GS-RA-22

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Question 1 of 20

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🔍 Key Concepts

• Psychrometric chart axes: horizontal = dry bulb (sensible heat/temperature), vertical-ish scale = moisture content (grains of moisture or humidity ratio). • What happens during cooling with dehumidification when coil surface temperature is below the dew point: both temperature and moisture content of the air change. • On the chart, cooling means moving toward lower dry bulb temperature; dehumidification means moving toward lower grains of moisture.

💭 Think About

• If air is cooled and moisture is removed, in which direction must the state point move with respect to both temperature (x-axis) and moisture content (right-hand scale)? • Compare "left or right" with temperature change, and "above or below" with moisture content change—how do these each change during this process? • Visualize the inlet point, then plot where the outlet point must be after losing sensible heat and moisture; connect them to see the line direction.

✅ Before You Answer

• Confirm that lower dry bulb temperature is found toward the left on this specific chart. • Confirm that lower grains of moisture per pound of dry air are found downward on the right-hand vertical scale. • Check that the chosen option shows a line direction consistent with both cooling AND dehumidifying (not just one or the other).

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