1. What is a Room Heating Calculator kW?

Definition: This calculator estimates the heating power required to raise the temperature of a room by a specified amount.

Purpose: It helps HVAC professionals and homeowners determine the appropriate heating capacity needed for a space.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( kW \) — Heating power required (kilowatts)
• \( Volume \) — Room volume (cubic meters)
• \( \Delta T \) — Desired temperature increase (°C)
• \( SHC_{air} \) — Specific heat capacity of air (kJ/m³·°C, typically 1.2)

Explanation: The formula calculates the energy needed to heat the air volume, then converts it to kilowatts.

3. Importance of Heating Calculation

Details: Proper heating estimation ensures comfort, energy efficiency, and correct sizing of heating equipment.

4. Using the Calculator

Tips: Enter the room volume in cubic meters, desired temperature increase, and specific heat capacity (default 1.2 kJ/m³·°C). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical SHC for air?
A: The specific heat capacity of air is approximately 1.2 kJ/m³·°C at standard conditions.

Q2: How do I calculate room volume?
A: Multiply length × width × height of the room in meters.

Q3: What temperature difference should I use?
A: This depends on how much you need to raise the temperature (e.g., from 10°C to 20°C would be ΔT=10).

Q4: Does this account for heat loss?
A: No, this is the theoretical heating requirement. Actual needs may be higher due to insulation quality and heat loss.

Q5: How do I convert to BTU/h?
A: Multiply kW result by 3412 to get BTU/h.