Referring to the illustrated psychrometric...

Referring to the illustrated psychrometric chart, suppose during the heating season where steam is injected into the air stream, this results in sensible heat gain and humidification. What statement represents the direction of the air conditioning process line? Illustration GS-RA-22

🔍 Key Concepts

• Sensible heat gain on a psychrometric chart (what happens to dry‑bulb temperature and which axis that affects) • Humidification vs dehumidification (what happens to grains of moisture / humidity ratio) • How a combined heating + humidifying process appears as a diagonal line between two points on the chart

💭 Think About

• On this chart, if the air is gaining sensible heat, which direction must the process move along the dry‑bulb temperature axis? • If steam is injected, is moisture content increasing or decreasing, and along which axis is that shown? • If both temperature and moisture content are increasing at the same time, where must the outlet point lie relative to the inlet point?

✅ Before You Answer

• Confirm which way dry‑bulb temperature (°F) increases along the bottom axis (left to right or right to left). • Confirm which way grains of moisture per pound of dry air increase along the right‑hand axis (upward or downward). • Combine those two directions to decide where the coil outlet must be located (right/left and above/below) relative to the coil inlet.