1. What is a kJ per Hour to kW Calculator?

Definition: This calculator converts energy flow in kilojoules per hour (kJ/h) to power in kilowatts (kW).

Purpose: It helps engineers, technicians, and students convert between these common units of energy and power measurement.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{kW} \) — Power in kilowatts (kW)
• \( E_{kJ/h} \) — Energy flow in kilojoules per hour (kJ/h)

Explanation: Since 1 kilowatt equals 3600 kilojoules per hour (1 kW = 1 kJ/s × 3600 s/h), we divide kJ/h by 3600 to get kW.

3. Importance of Power Conversion

Details: Accurate conversion between these units is essential for energy calculations, equipment sizing, and system design in mechanical, electrical, and chemical engineering applications.

4. Using the Calculator

Tips: Simply enter the energy value in kJ/h. The value must be > 0. The result will show the equivalent power in kW with high precision (6 decimal places).

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 3600?
A: Because 1 kW = 1 kJ/s and there are 3600 seconds in an hour, so 1 kW = 3600 kJ/h.

Q2: When would I need this conversion?
A: When working with energy flow rates in heating/cooling systems, power generation, or any process where energy transfer rates are measured.

Q3: What's the difference between kJ/h and kW?
A: kJ/h measures energy flow per time, while kW measures power (energy per time in standard SI units).

Q4: Can I convert kW back to kJ/h?
A: Yes, multiply kW by 3600 to get kJ/h.

Q5: Why show 6 decimal places?
A: For precision in engineering calculations where small differences matter.