Convert kWh to BTU/hr Calculator by Tons of Concrete

Energy Conversion Formula:

\[ Q_{btu} = \frac{E_{kWh} \times 3412}{t} \]

BTU per Hour: BTU/h

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1. What is a kWh to BTU/hr Calculator?

Definition: This calculator converts energy consumption in kilowatt-hours (kWh) to British Thermal Units per hour (BTU/h).

Purpose: It helps compare electrical energy usage with thermal energy systems and is useful for HVAC sizing and energy efficiency analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q_{btu} = \frac{E_{kWh} \times 3412}{t} \]

Where:

\( Q_{btu} \) — BTU per hour (BTU/h)
\( E_{kWh} \) — Energy consumption (kWh)
\( t \) — Time period (hours)
3412 — Conversion factor (BTU per kWh)

Explanation: The formula converts the total energy used (in kWh) to equivalent thermal energy (BTU), then divides by time to get the rate per hour.

3. Importance of Energy Conversion

Details: Converting between electrical and thermal energy units is essential for system comparisons, equipment sizing, and energy efficiency calculations.

4. Using the Calculator

Tips: Enter the energy consumption in kWh and the time period in hours. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why 3412 as the conversion factor?
A: 1 kWh equals exactly 3412.14 BTU, as defined by the International System of Units.

Q2: When would I need this conversion?
A: When comparing electrical appliances to gas-powered systems, or sizing HVAC equipment based on electrical usage data.

Q3: What if my time period isn't in hours?
A: Convert your time to hours first (e.g., 30 minutes = 0.5 hours, 1 day = 24 hours).

Q4: Can I convert BTU/h back to kWh?
A: Yes, use the inverse formula: \( E_{kWh} = (Q_{btu} \times t) / 3412 \).

Q5: Does this account for efficiency differences?
A: No, this is a direct unit conversion. Actual system performance depends on equipment efficiency.