1. What is Cooling Degree Days?

Cooling Degree Days (CDD) is a measurement designed to quantify the demand for energy needed to cool buildings. It is based on how much the average temperature exceeds a base temperature, typically 65°F.

2. How Does the Calculator Work?

The calculator uses the CDD formula:

Where:

• \( T_{avg} \) — Average temperature (°F)
• \( Base \) — Base temperature (typically 65°F)

Explanation: The formula calculates how many degrees the average temperature exceeds the base temperature. If the average temperature is below the base, the result is zero.

3. Importance of CDD Calculation

Details: CDD is crucial for energy companies to predict cooling demand, for HVAC system sizing, and for analyzing energy consumption patterns in buildings.

4. Using the Calculator

Tips: Enter the average temperature in °F and the base temperature (default is 65°F). The calculator will compute the cooling degree days.

5. Frequently Asked Questions (FAQ)

Q1: Why is 65°F typically used as the base temperature?
A: 65°F is considered the temperature at which buildings typically require neither heating nor cooling to maintain comfort.

Q2: Can I use different base temperatures?
A: Yes, the calculator allows you to input any base temperature that suits your specific application or regional climate.

Q3: How is CDD used in energy forecasting?
A: Energy companies use CDD data to predict electricity demand for air conditioning, which helps in grid management and pricing.

Q4: What's the difference between CDD and HDD?
A: CDD measures cooling demand when temperatures are above the base, while HDD (Heating Degree Days) measures heating demand when temperatures are below the base.

Q5: Can CDD be calculated for Celsius temperatures?
A: Yes, but the base temperature would need to be adjusted (typically 18.3°C instead of 65°F).