1. What is Air Conditioning Design Calculation?

Definition: This calculator estimates the required cooling power (in kW) for an air conditioning system based on room area and energy efficiency.

Purpose: It helps HVAC professionals and homeowners determine the appropriate AC unit size for optimal cooling performance and energy efficiency.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{kW} \) — Cooling power (kilowatts)
• \( A_{room} \) — Room area (square meters)
• \( EER \) — Energy Efficiency Ratio (dimensionless)
• 44.6 — Conversion factor (W/m² to BTU/h·ft²)
• 3412 — Conversion factor (BTU/h to kW)

Explanation: The formula converts room area to cooling load and adjusts for the AC unit's efficiency.

3. Importance of Proper AC Sizing

Details: Correct sizing ensures energy efficiency, proper humidity control, and prevents short cycling or insufficient cooling.

4. Using the Calculator

Tips: Enter the room area in square meters and the EER (default 3.5 for standard units). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is EER?
A: Energy Efficiency Ratio measures how efficiently an AC unit converts electricity to cooling (higher is better).

Q2: What's a typical EER value?
A: Standard units range 8-12, while high-efficiency units can reach 14+. The default 3.5 accounts for conversion factors.

Q3: Does this include heat load factors?
A: This is a basic calculation. For precise sizing, consider insulation, windows, occupancy, and other heat sources.

Q4: How do I convert to tons of cooling?
A: 1 ton ≈ 3.517 kW. Divide the result by 3.517 to get tons.

Q5: What if my room has high ceilings?
A: Multiply the area by (actual height/2.4m) before calculation to account for extra volume.