Sensible Heat:
Refers to the difference in heat content between the supply air and return air.
It is the temperature change felt as air is warmed or cooled.
Formula for Sensible Heat:
Formula: Sensible Heat = CFM × 1.08 × Delta T.
1.08: Constant for standard air (BTUs per pound of air).
Delta T: Temperature difference between supply and return air.
Steps to Calculate Sensible Heat:
Step 1: Obtain CFM value (e.g., 1200).
Step 2: Measure supply and return air temperatures using a thermometer.
Step 3: Subtract return air temperature from supply air temperature to find Delta T (e.g., 120°F - 70°F = 50°F).
Step 4: Multiply CFM by 1.08 and Delta T (e.g., 1200 × 1.08 × 50 = 64,800 BTUs).
Real-World Applications:
Ensures efficient system design and operation.
Helps in troubleshooting HVAC systems.
Important for maintaining occupant comfort.
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