1. What is the Room Heating Calculation?

The room heating calculation estimates the required heating power (in kW) to maintain a desired temperature in a space, accounting for room volume, temperature difference, and air change rate.

2. How Does the Calculator Work?

The calculator uses the heating equation:

Where:

• \( volume_{m^3} \) — Room volume in cubic meters
• \( \Delta T \) — Temperature difference between desired and outside temperature (°C)
• \( air\ changes \) — Air changes per hour (1/h)
• 3412 — Conversion factor (BTU to kW)

Explanation: The equation calculates the heat energy needed to compensate for heat loss through ventilation and maintain the desired temperature.

3. Importance of Heating Calculation

Details: Proper heating calculation ensures comfortable indoor temperatures, energy efficiency, and correct sizing of heating equipment.

4. Using the Calculator

Tips: Enter room volume in cubic meters, temperature difference in °C, and air changes per hour. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I determine air changes per hour?
A: This depends on room ventilation. Typical values range from 0.5 (tight building) to 2 (well-ventilated) changes per hour.

Q2: What temperature difference should I use?
A: Use the difference between your desired indoor temperature and the lowest expected outdoor temperature.

Q3: Does this account for heat loss through walls/windows?
A: This calculation focuses on ventilation heat loss. For complete heat loss calculation, include building envelope factors.

Q4: What's the 3412 conversion factor?
A: This converts BTU/h to kW (1 kW = 3412 BTU/h), as the formula is derived from British thermal units.

Q5: Should I add a safety factor?
A: It's common to add 10-20% to the calculated value to account for unexpected heat losses.