What Is This Tool?
This tool converts power values from horsepower (electric), a unit commonly used for electric motor ratings, into kilojoule per hour [kJ/h], a unit measuring energy transfer rates over time. It helps translate motor power into hourly energy consumption or heat generation values.
How to Use This Tool?
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Enter the value in horsepower (electric) to be converted
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Select horsepower (electric) as the input unit
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Choose kilojoule per hour [kJ/h] as the output unit
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Click convert to see the equivalent power expressed in kJ/h
Key Features
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Supports conversion from electric horsepower to kilojoule per hour with defined rates
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Useful for motor specifications, energy auditing, and laboratory measurements
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Browser-based tool requiring no installation
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Simplifies comparisons between electrical and energy-based power units
Examples
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2 horsepower (electric) converts to 5371.2 kilojoule/hour [kJ/h]
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0.5 horsepower (electric) converts to 1342.8 kilojoule/hour [kJ/h]
Common Use Cases
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Determining motor output power for pumps, fans, and compressors
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Sizing controllers and electrical supply capacity in industrial settings
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Expressing heating or cooling rates in building physics
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Tracking metabolic energy expenditure or calorimetry in laboratory studies
Tips & Best Practices
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Ensure power levels are steady since conversion assumes constant output
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Use kilojoule/hour for small-to-moderate power rates typically measured over hours
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Refer to watts or kilowatts for applications involving high power
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Verify units on motor nameplates to avoid inconsistent input data
Limitations
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Assumes constant power without accounting for transient changes
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Kilojoule/hour may not be suitable for very high power applications
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Conversion accuracy depends on exact value definitions without rounding
Frequently Asked Questions
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What is electric horsepower?
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Electric horsepower is a power unit rating electric motors, defined exactly as 746 watts, representing mechanical work output produced by an electric machine.
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What does kilojoule per hour measure?
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Kilojoule per hour measures the rate of energy transfer where 1 kJ/h equals 1000 joules delivered or consumed every hour, useful for small-to-moderate energy rates.
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Why convert horsepower (electric) to kilojoule/hour?
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Converting helps translate motor power ratings into hourly energy transfer rates, aiding assessments of energy use or heat production over time.
Key Terminology
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Horsepower (electric)
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A unit of power used to rate electric motors, defined as exactly 746 watts representing mechanical work from electric machines.
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Kilojoule/hour [kJ/h]
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A power unit representing 1,000 joules transferred or consumed every hour, suited for small to moderate energy rates over hourly periods.