1. What Is The Energy Formula?

The energy formula E = P × t × 3600 calculates energy consumption in kilojoules (kJ) based on power in kilowatts (kW) and time in hours. The factor 3600 converts hours to seconds (1 hour = 3600 seconds) and kW to J/s.

2. How Does The Calculator Work?

The calculator uses the energy formula:

Where:

• \( E \) — Energy (kJ)
• \( P \) — Power (kW)
• \( t \) — Time (hours)
• \( 3600 \) — Conversion factor (seconds per hour)

Explanation: This formula converts power consumption over time into total energy used, accounting for unit conversions between kW, hours, and kJ.

3. Importance Of Energy Calculation

Details: Accurate energy calculation is essential for energy management, cost estimation, efficiency analysis, and environmental impact assessment in various applications.

4. Using The Calculator

Tips: Enter power in kilowatts (kW) and time in hours. All values must be valid (power > 0, time > 0). The calculator will compute energy consumption in kilojoules (kJ).

5. Frequently Asked Questions (FAQ)

Q1: Why multiply by 3600 in the formula?
A: We multiply by 3600 to convert hours to seconds (1 hour = 3600 seconds) and kW to J/s (1 kW = 1000 J/s), resulting in energy in kJ.

Q2: Can I use different time units?
A: The calculator requires time in hours. For minutes, divide by 60; for seconds, divide by 3600 before entering the value.

Q3: What are typical power values?
A: Household appliances range from 0.1 kW (LED bulb) to 3 kW (water heater). Industrial equipment can be much higher.

Q4: How accurate is this calculation?
A: The calculation is mathematically precise. Accuracy depends on the precision of your power and time measurements.

Q5: Can this calculate energy costs?
A: To calculate cost, multiply the energy result by your electricity rate (typically in $/kWh, noting that 1 kWh = 3600 kJ).