Calories (th)/hour/square centimeter to Btus (th)/second/square inch Converter (cal (th)/(h·cm²) to Btu (th)/(s·in²))
cal (th)/(h·cm²) × 7.11163489 × 10⁻⁶ = Btu (th)/(s·in²)
Calculation: 1 cal (th)/(h·cm²) × 7.11163489 × 10⁻⁶ = 7.11163489 × 10⁻⁶ Btu (th)/(s·in²)
Common Calorie (th)/hour/square centimeter to Btu (th)/second/square inch Calculations
Quick-lookup reference table showing calculated equivalents for standard increments between Calorie (th)/hour/square centimeter (cal (th)/(h·cm²)) and Btu (th)/second/square inch (Btu (th)/(s·in²)).
| Conversion & Equivalent Value | Scientific Notation |
|---|---|
| 0.001 cal (th)/(h·cm²) 7.111635 × 10⁻⁹ Btu (th)/(s·in²) | 7.112 × 10⁻⁹ |
| 0.01 cal (th)/(h·cm²) 7.111635 × 10⁻⁸ Btu (th)/(s·in²) | 7.112 × 10⁻⁸ |
| 0.1 cal (th)/(h·cm²) 7.111635 × 10⁻⁷ Btu (th)/(s·in²) | 7.112 × 10⁻⁷ |
| 0.5 cal (th)/(h·cm²) 3.555817 × 10⁻⁶ Btu (th)/(s·in²) | 3.556 × 10⁻⁶ |
| 1 cal (th)/(h·cm²) 7.111635 × 10⁻⁶ Btu (th)/(s·in²) | 7.112 × 10⁻⁶ |
| 2 cal (th)/(h·cm²) 1.422327 × 10⁻⁵ Btu (th)/(s·in²) | 1.422 × 10⁻⁵ |
| 5 cal (th)/(h·cm²) 3.555817 × 10⁻⁵ Btu (th)/(s·in²) | 3.556 × 10⁻⁵ |
| 10 cal (th)/(h·cm²) 7.111635 × 10⁻⁵ Btu (th)/(s·in²) | 7.112 × 10⁻⁵ |
| 20 cal (th)/(h·cm²) 0.000142233 Btu (th)/(s·in²) | 1.422 × 10⁻⁴ |
| 25 cal (th)/(h·cm²) 0.000177791 Btu (th)/(s·in²) | 1.778 × 10⁻⁴ |
| 50 cal (th)/(h·cm²) 0.000355582 Btu (th)/(s·in²) | 3.556 × 10⁻⁴ |
| 100 cal (th)/(h·cm²) 0.000711163 Btu (th)/(s·in²) | 7.112 × 10⁻⁴ |
| 250 cal (th)/(h·cm²) 0.00177791 Btu (th)/(s·in²) | 1.778 × 10⁻³ |
| 500 cal (th)/(h·cm²) 0.00355582 Btu (th)/(s·in²) | 3.556 × 10⁻³ |
| 1000 cal (th)/(h·cm²) 0.00711163 Btu (th)/(s·in²) | 7.112 × 10⁻³ |
| Reciprocal & Equivalent Value | Scientific Notation |
|---|---|
| 1 Btu (th)/(s·in²) 140614.642916 cal (th)/(h·cm²) | 1.406 × 10⁵ |
| 5 Btu (th)/(s·in²) 703073.214578 cal (th)/(h·cm²) | 7.031 × 10⁵ |
| 10 Btu (th)/(s·in²) 1406146.429155 cal (th)/(h·cm²) | 1.406 × 10⁶ |
| 50 Btu (th)/(s·in²) 7030732.145775 cal (th)/(h·cm²) | 7.031 × 10⁶ |
| 100 Btu (th)/(s·in²) 1.406146 × 10⁷ cal (th)/(h·cm²) | 1.406 × 10⁷ |
Real-World Context & Everyday Benchmarks
Tap to load into converterTo help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for Calorie (th)/hour/square centimeter (cal (th)/(h·cm²)) and Btu (th)/second/square inch (Btu (th)/(s·in²)):
Calorie (th)/hour/square centimeter References:
- Glass greenhouse passive solar heating transmission flux 60 cal (th)/(h·cm²)
Btu (th)/second/square inch References:
- Gas turbine first-stage stationary nozzle guide vane heat flux 0.5 Btu (th)/(s·in²)
How to Convert Calorie (th)/hour/square centimeter to Btu (th)/second/square inch
Converting Calorie (th)/hour/square centimeter (cal (th)/(h·cm²)) to Btu (th)/second/square inch (Btu (th)/(s·in²)) is a core calculation in Heat Flux Density, which measures the rate of thermal energy transfer radiating or conducting through a unit area per second. This calculation navigates the boundary between the International Metric System (SI) and British Imperial / US Customary engineering standards. In contemporary metrology, Imperial units are defined in terms of exact SI standards via international agreements—notably NIST SP 811 and the 1959 International Yard and Pound Agreement. Exactly 1 Calorie (th)/hour/square centimeter equals 7.111635 × 10⁻⁶ Btu (th)/second/square inch, while 1 Btu (th)/(s·in²) equals 140614.642916 cal (th)/(h·cm²).
Mathematical Conversion Derivation via Coherent SI Base Unit
Under the International System of Quantities (ISQ), dimensional conversion between non-SI units is rigorously resolved by bridging through the coherent SI base unit (watt per square meter (W/m²)) without arbitrary rounding:
1 cal (th)/(h·cm²) = 11.622217 watt per square meter (W/m²)1 Btu (th)/(s·in²) = 1634253.963066 watt per square meter (W/m²)V(Btu (th)/(s·in²)) = V(cal (th)/(h·cm²)) × ( 11.622217 / 1634253.963066 ) = V(cal (th)/(h·cm²)) × 7.111635 × 10⁻⁶Value in Btu (th)/second/square inch = Value in Calorie (th)/hour/square centimeter × 7.11163489 × 10⁻⁶Direct computational formula applied for standard conversion.To convert 50 Calorie (th)/hour/square centimeter (cal (th)/(h·cm²)) to Btu (th)/second/square inch (Btu (th)/(s·in²)): multiply 50 by 7.111635 × 10⁻⁶ to get 0.000355582 Btu (th)/(s·in²). At an industrial engineering scale, 10000 cal (th)/(h·cm²) converts to 0.0711163 Btu (th)/(s·in²).
Inverse check: 1 Btu (th)/(s·in²) = 140614.642916 cal (th)/(h·cm²).Understanding Calorie (th)/hour/square centimeter and Btu (th)/second/square inch
Calorie (th)/hour/square centimeter
cal (th)/(h·cm²)A Calorie (th)/hour/square centimeter (cal (th)/(h·cm²)) is a recognized unit for heat flux density.
Applications & Practical Context
In practical heat flux density terms, a glass greenhouse passive solar heating transmission flux equals 60 cal (th)/(h·cm²).
A physical magnitude of 1 cal (th)/(h·cm²) corresponds to 11.622217 W/m² in standard SI measurement.
1 cal (th)/(h·cm²) = 11.622217 W/m²Btu (th)/second/square inch
Btu (th)/(s·in²)A Btu (th)/second/square inch (Btu (th)/(s·in²)) is an imperial and US customary unit for heat flux density.
Applications & Practical Context
In practical heat flux density terms, a gas turbine first-stage stationary nozzle guide vane heat flux equals 0.5 Btu (th)/(s·in²).
A physical magnitude of 1 Btu (th)/(s·in²) corresponds to 1634253.963066 W/m² in standard SI measurement.
1 Btu (th)/(s·in²) = 1634253.963066 W/m²Domain Metrology & Engineering Applications
Thermal Transmission Flux (q = Q̇ / A)
Rigorously quantified in laboratory and field settings using Schmidt-Boelter heat flux gauges, differential thermopile foil transducers, and calibrated Gardon radiant gauges.
Applied across rocket nozzle combustion chamber analysis, fire resistance testing (ASTM E119), furnace wall heat loss auditing, and hypersonic aerothermal design under international metrology standard ISO 80000-5:2019, ASME PTC 19.3.
Formulas, conversion coefficients, and base definitions on this page strictly adhere to the ISO 80000-5:2019, ASME PTC 19.3 and the BIPM SI Brochure (9th Edition). Governed by Thermal Transmission Flux (q = Q̇ / A) under ISO 80000 dimensional vector [M T⁻³].
Heat Flux Density to Total Thermal Power Bridge (Watts • Kilowatts • Megawatts • BTU/h • Horsepower)
Calculate total continuous heat dissipation power P = q" × A across surface barriers and exchangers, bridging heat flux density [M T⁻³] with thermal power [M L² T⁻³].
P = q" × A
[W/m²] × [m²] → [W]
-
1. Normalize Input to SI Base Unit (W/m²):
q" = 1 cal (th)/(h·cm²) × 11.6222175 = 11.6222175 W/m² -
2. Apply Engineering Parameter (A):
Selected condition: Industrial Hydronic Radiator Panel (8 m²) at A = 8 m² -
3. Execute Governing Physical Law in SI Units:
P = q" × A = (11.6222175 W/m²) × (8 m²) = 92.97774 W -
4. Convert to Standard Engineering Units:
• W: 92.97774 × 1 = 92.9777 W (Watts) • kW: 92.97774 × 0.001 = 0.09298 kW (Kilowatts) • MW: 92.97774 × 1 × 10⁻⁶ = 9.297774 × 10⁻⁵ MW (Megawatts) • hp: 92.97774 × 0.001341 = 0.1247 hp (Horsepower (Mechanical)) • PS: 92.97774 × 0.00136 = 0.1264 PS (Metric Horsepower (PS)) • BTU/h: 92.97774 × 3.4121 = 317.25 BTU/h (BTU per Hour)
| Engineering Substance / Operating Standard | Parameter Value (m²) | Reference State / Condition | Typical Industrial & Engineering Application |
|---|---|---|---|
| Residential Window Glazing (4 m²) | 4 |
4.0 m² | Double-pane exterior window glass aperture |
| Industrial Hydronic Radiator Panel (8 m²) | 8 |
8.0 m² | Convective space heating radiator surface |
| Shell & Tube Heat Exchanger (50 m²) | 50 |
50.0 m² | Industrial process fluid cooling bundle |
| Power Boiler Waterwall (200 m²) | 200 |
200.0 m² | Thermal power plant steam generator wall |
Frequently Asked Questions
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