1. What is Condensate from Cooling Coil?

Definition: This calculator estimates the amount of water (condensate) that forms when warm, humid air passes over a cooling coil.

Purpose: It helps HVAC professionals determine the condensate production rate for proper drain sizing and water management.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Condensate — Water removal rate (gallons per hour)
• Air Flow — Air volume flow rate (cubic feet per minute)
• Humidity In — Entering air moisture content (grains per pound)
• Humidity Out — Leaving air moisture content (grains per pound)
• Density — Water density (pounds per gallon, default 8.33)

Explanation: The formula calculates how much moisture is removed from the air and converts it to gallons per hour.

3. Importance of Condensate Calculation

Details: Proper condensate calculation ensures adequate drain sizing, prevents overflow, and helps maintain system efficiency.

4. Using the Calculator

Tips: Enter the air flow rate, entering and leaving humidity levels, and water density (default 8.33 lb/gal). All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the 7000 factor in the formula?
A: This converts grains to pounds (7000 grains = 1 pound) and adjusts units to gallons per hour.

Q2: Where do I find humidity values?
A: Use psychrometric charts or measurements from a hygrometer. Typical values range from 30-120 gr/lb.

Q3: Why is water density important?
A: It converts the weight of condensate to volume. The default assumes water at 60°F (8.33 lb/gal).

Q4: What if my humidity out is higher than humidity in?
A: This would indicate no condensation (result will be negative or zero). Check your measurements.

Q5: How accurate is this calculation?
A: It provides a good estimate but actual results may vary based on coil efficiency and air distribution.