What Is This Tool?
This converter allows you to transform rates of energy transfer expressed in kilojoules per hour into thermochemical calories per hour, facilitating specialized power measurements in scientific and physiological contexts.
How to Use This Tool?
-
Enter the power value in kilojoule per hour.
-
Select kilojoule/hour as the source unit and calorie (th)/hour as the target unit.
-
Click convert to get the equivalent value in calorie (th)/hour.
Key Features
-
Converts kilojoule/hour to calorie (th)/hour accurately using defined conversion rates.
-
Suitable for low-level power rate measurements in calorimetry, metabolism, and building physics.
-
Web-based and user-friendly interface for quick unit conversions.
Examples
-
2 kJ/h converts to approximately 478.01 cal (th)/h.
-
0.5 kJ/h converts to about 119.50 cal (th)/h.
Common Use Cases
-
Expressing heating or cooling rates in building physics over hourly periods.
-
Measuring metabolic or exercise energy expenditure expressed as energy per hour.
-
Laboratory calorimetry involving chemical reactions or sample heat release.
-
Thermal management for small devices using non-SI thermal units.
Tips & Best Practices
-
Ensure you use the thermochemical calorie definition exactly when converting.
-
Understand that this conversion best applies to low power rates.
-
Remember that calorie (th)/hour is a non-SI unit, appropriate mainly in niche scientific contexts.
Limitations
-
Both units represent low power levels; conversion precision depends on context relevance.
-
Calorie (th)/hour is not widely used outside specialized scientific fields.
-
Conversion relies on the exact calorie (th) definition and may not be valid for other calorie types.
Frequently Asked Questions
-
What does kilojoule per hour measure?
-
Kilojoule per hour measures the rate of energy transfer corresponding to 1,000 joules delivered or consumed every hour.
-
When should I use calorie (th)/hour units?
-
Calorie (th)/hour units are used mainly for reporting small heat-transfer rates in calorimetry and metabolic rate studies.
-
Is calorie (th)/hour an SI unit?
-
No, calorie (th)/hour is a non-SI unit mainly used in specific scientific fields rather than general engineering.
Key Terminology
-
Kilojoule/hour (kJ/h)
-
A power unit measuring energy transfer of 1,000 joules delivered every hour, useful for small-to-moderate energy rates.
-
Calorie (th)/hour [cal (th)/h]
-
A unit of power indicating heat transfer rate equal to one thermochemical calorie per hour, commonly used in calorimetry and metabolic studies.
-
Thermochemical calorie
-
A precise calorie definition equivalent to exactly 4.184 joules, used in the calorie (th)/hour power unit.