1. What is a kW per Hour Calculator?

Definition: This calculator estimates the energy consumption in kilowatt-hours (kWh) based on power in kilowatts (kW) over one hour.

Purpose: It helps users understand the energy consumption of electrical devices or systems operating at a constant power level for one hour.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E_{kWh} \) — Energy consumption (kilowatt-hours)
• \( P_{kW} \) — Power (kilowatts)
• \( 1 \) — Time duration (1 hour)

Explanation: The power in kilowatts is multiplied by 1 hour to get the energy consumption in kilowatt-hours.

3. Importance of Energy Calculation

Details: Understanding energy consumption helps in estimating electricity costs, sizing electrical systems, and evaluating energy efficiency.

4. Using the Calculator

Tips: Enter the power in kilowatts. The value must be > 0. The result shows the energy consumed in one hour.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), while kWh measures energy (power × time).

Q2: Can I use this for longer time periods?
A: Yes, multiply the result by the number of hours to get total consumption.

Q3: What's a typical kW value for household appliances?
A: Refrigerators: 0.1-0.2 kW, AC units: 1-5 kW, Electric heaters: 1.5-3 kW.

Q4: How do I convert watts to kilowatts?
A: Divide watts by 1000 (1 kW = 1000 W).

Q5: Does this account for power factor?
A: No, this assumes purely resistive loads. For reactive loads, additional factors apply.