📐 Mathematical Formula & Derivation
\text{BTU}_{hr} = A_{m^2} \times H_{m} \times K_{insulation} \times F_{sun} + (N_{people} \times 600) 🔬 Engineering Methodology & Benchmark Analysis
Sizing an air conditioner or heat pump solely by square footage ignores ceiling height and building envelope losses. A room with 3.5-meter ceilings holds 35% more air volume than a standard 2.6-meter room.
Furthermore, oversized HVAC units short-cycle: they cool the air too rapidly without running long enough to remove indoor humidity, leaving rooms clammy and wearing out compressors prematurely. 1,000 BTU/hr equals 0.293071 kW of thermal energy.
🛠️ Step-by-Step Engineering Calculation Guide
- Conditioned Floor Area (Square Meters — m²): Configure "Conditioned Floor Area (Square Meters — m²)" (default benchmark: 40) or select an industry preset.
- Ceiling Height (Meters): Configure "Ceiling Height (Meters)" (default benchmark: 2.7) or select an industry preset.
- Building Envelope Insulation & Window Glazing: Configure "Building Envelope Insulation & Window Glazing" (default benchmark: 1) or select an industry preset.
- Solar Heat Gain & Room Orientation: Configure "Solar Heat Gain & Room Orientation" (default benchmark: 1) or select an industry preset.
- Typical Number of Occupants in Space: Configure "Typical Number of Occupants in Space" (default benchmark: 3) or select an industry preset.