BTU/hr·ft·°F
Definition: An imperial unit for thermal conductivity, representing British Thermal Units per hour per foot per degree Fahrenheit.
History/origin: Developed during the industrial revolution in the UK and USA. It remains a key legacy unit in the American construction and HVAC industries.
Current use: Predominantly used in the United States for building insulation ratings, boiler specifications, and heat exchanger design.
cal/s·cm·°C
Definition: A metric unit from the CGS system representing calories per second per centimeter per degree Celsius.
History/origin: This unit was widely used in European scientific literature during the 19th and early 20th centuries before the widespread adoption of Joules and Watts.
Current use: Occasionally found in older scientific papers and specific branches of chemistry and specialized material testing.
BTU/hr·ft·°F to cal/s·cm·°C Conversion Table
| BTU/hr·ft·°F [btu_fh] | cal/s·cm·°C [cal_scm] |
|---|---|
| 0.01 btu_fh | 0.00004134 cal_scm |
| 0.1 btu_fh | 0.00041338 cal_scm |
| 1 btu_fh | 0.00413379 cal_scm |
| 2 btu_fh | 0.00826758 cal_scm |
| 3 btu_fh | 0.01240137 cal_scm |
| 5 btu_fh | 0.02066895 cal_scm |
| 10 btu_fh | 0.0413379 cal_scm |
| 20 btu_fh | 0.08267579 cal_scm |
| 50 btu_fh | 0.20668948 cal_scm |
| 100 btu_fh | 0.41337895 cal_scm |
| 1000 btu_fh | 4.13378953 cal_scm |
How to Convert BTU/hr·ft·°F to cal/s·cm·°C
1 btu_fh = 0.00413379 cal_scm
1 cal_scm = 241.90878442 btu_fh
Example: convert 15 btu_fh to cal_scm:
15 btu_fh = 15 × 0.00413379 cal_scm = 0.06200684 cal_scm
Did You Know?
- In the United States, thermal conductivity is often used to calculate "R-value" for home insulation. A lower thermal conductivity means a higher R-value, keeping your home warmer in winter!
- The calorie-based unit was historically used in early thermodynamics research before the Watt-based SI unit became the global scientific standard.