1. What is Room Temperature Calculation?

Definition: This calculator estimates the temperature change in a room based on heat input, air mass, and specific heat capacity.

Purpose: It helps HVAC professionals, engineers, and energy-conscious homeowners understand how heat sources affect room temperature.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Final temperature (°C)
• \( T_0 \) — Initial temperature (°C)
• \( P \) — Power input (W)
• \( t \) — Time duration (s)
• \( m \) — Air mass (kg)
• \( c \) — Specific heat capacity of air (J/kg·K, default 1005)

Explanation: The formula calculates how much a heat source will raise the temperature of the air in a room over time.

3. Importance of Temperature Calculation

Details: Accurate temperature prediction helps in HVAC system design, energy efficiency planning, and thermal comfort assessment.

4. Using the Calculator

Tips: Enter initial temperature, power input, time duration, air mass, and specific heat capacity (default 1005 J/kg·K for dry air). Mass and heat capacity must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I estimate air mass in a room?
A: Multiply room volume (m³) by air density (about 1.2 kg/m³ at 20°C). For example, 5m×4m×3m = 60m³ × 1.2 = 72kg.

Q2: Why 1005 J/kg·K for specific heat?
A: This is the specific heat of dry air at constant pressure. Humid air might be slightly higher (up to 1020 J/kg·K).

Q3: Does this account for heat loss?
A: No, this is an ideal calculation. Real rooms lose heat through walls/windows, so actual temperature rise may be lower.

Q4: Can I use this for cooling calculations?
A: Yes, use negative power values for cooling systems (though real cooling involves humidity changes too).

Q5: How accurate is this calculation?
A: It gives theoretical maximum temperature change. Actual results vary due to heat loss, air mixing, and other factors.