Calories (it)/hour/square centimeter to Btus (th)/second/square inch Converter (cal/(h·cm²) to Btu (th)/(s·in²))
cal/(h·cm²) × 7.11639889 × 10⁻⁶ = Btu (th)/(s·in²)
Calculation: 1 cal/(h·cm²) × 7.11639889 × 10⁻⁶ = 7.11639889 × 10⁻⁶ Btu (th)/(s·in²)
Common Calorie (IT)/hour/square centimeter to Btu (th)/second/square inch Calculations
Quick-lookup reference table showing calculated equivalents for standard increments between Calorie (IT)/hour/square centimeter (cal/(h·cm²)) and Btu (th)/second/square inch (Btu (th)/(s·in²)).
| Conversion & Equivalent Value | Scientific Notation |
|---|---|
| 0.001 cal/(h·cm²) 7.116399 × 10⁻⁹ Btu (th)/(s·in²) | 7.116 × 10⁻⁹ |
| 0.01 cal/(h·cm²) 7.116399 × 10⁻⁸ Btu (th)/(s·in²) | 7.116 × 10⁻⁸ |
| 0.1 cal/(h·cm²) 7.116399 × 10⁻⁷ Btu (th)/(s·in²) | 7.116 × 10⁻⁷ |
| 0.5 cal/(h·cm²) 3.558199 × 10⁻⁶ Btu (th)/(s·in²) | 3.558 × 10⁻⁶ |
| 1 cal/(h·cm²) 7.116399 × 10⁻⁶ Btu (th)/(s·in²) | 7.116 × 10⁻⁶ |
| 2 cal/(h·cm²) 1.42328 × 10⁻⁵ Btu (th)/(s·in²) | 1.423 × 10⁻⁵ |
| 5 cal/(h·cm²) 3.558199 × 10⁻⁵ Btu (th)/(s·in²) | 3.558 × 10⁻⁵ |
| 10 cal/(h·cm²) 7.116399 × 10⁻⁵ Btu (th)/(s·in²) | 7.116 × 10⁻⁵ |
| 20 cal/(h·cm²) 0.000142328 Btu (th)/(s·in²) | 1.423 × 10⁻⁴ |
| 25 cal/(h·cm²) 0.00017791 Btu (th)/(s·in²) | 1.779 × 10⁻⁴ |
| 50 cal/(h·cm²) 0.00035582 Btu (th)/(s·in²) | 3.558 × 10⁻⁴ |
| 100 cal/(h·cm²) 0.00071164 Btu (th)/(s·in²) | 7.116 × 10⁻⁴ |
| 250 cal/(h·cm²) 0.0017791 Btu (th)/(s·in²) | 1.779 × 10⁻³ |
| 500 cal/(h·cm²) 0.0035582 Btu (th)/(s·in²) | 3.558 × 10⁻³ |
| 1000 cal/(h·cm²) 0.0071164 Btu (th)/(s·in²) | 7.116 × 10⁻³ |
| Reciprocal & Equivalent Value | Scientific Notation |
|---|---|
| 1 Btu (th)/(s·in²) 140520.509887 cal/(h·cm²) | 1.405 × 10⁵ |
| 5 Btu (th)/(s·in²) 702602.549436 cal/(h·cm²) | 7.026 × 10⁵ |
| 10 Btu (th)/(s·in²) 1405205.098872 cal/(h·cm²) | 1.405 × 10⁶ |
| 50 Btu (th)/(s·in²) 7026025.494362 cal/(h·cm²) | 7.026 × 10⁶ |
| 100 Btu (th)/(s·in²) 1.405205 × 10⁷ cal/(h·cm²) | 1.405 × 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 (IT)/hour/square centimeter (cal/(h·cm²)) and Btu (th)/second/square inch (Btu (th)/(s·in²)):
Calorie (IT)/hour/square centimeter References:
- Clear sky solar radiation energy flux per hour 86 cal/(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 (IT)/hour/square centimeter to Btu (th)/second/square inch
Converting Calorie (IT)/hour/square centimeter (cal/(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 (IT)/hour/square centimeter equals 7.116399 × 10⁻⁶ Btu (th)/second/square inch, while 1 Btu (th)/(s·in²) equals 140520.509887 cal/(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/(h·cm²) = 11.630003 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/(h·cm²)) × ( 11.630003 / 1634253.963066 ) = V(cal/(h·cm²)) × 7.116399 × 10⁻⁶Value in Btu (th)/second/square inch = Value in Calorie (IT)/hour/square centimeter × 7.11639889 × 10⁻⁶Direct computational formula applied for standard conversion.To convert 120 Calorie (IT)/hour/square centimeter (cal/(h·cm²)) to Btu (th)/second/square inch (Btu (th)/(s·in²)): multiply 120 by 7.116399 × 10⁻⁶ to get 0.000853968 Btu (th)/(s·in²). At an industrial engineering scale, 240 cal/(h·cm²) converts to 0.00170794 Btu (th)/(s·in²).
Inverse check: 1 Btu (th)/(s·in²) = 140520.509887 cal/(h·cm²).Understanding Calorie (IT)/hour/square centimeter and Btu (th)/second/square inch
Calorie (IT)/hour/square centimeter
cal/(h·cm²)A Calorie (IT)/hour/square centimeter (cal/(h·cm²)) is a recognized unit for heat flux density.
Applications & Practical Context
In practical heat flux density terms, a clear sky solar radiation energy flux per hour equals 86 cal/(h·cm²).
A physical magnitude of 1 cal/(h·cm²) corresponds to 11.630003 W/m² in standard SI measurement.
1 cal/(h·cm²) = 11.630003 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/(h·cm²) × 11.63000308 = 11.63000308 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 = (11.63000308 W/m²) × (8 m²) = 93.040025 W -
4. Convert to Standard Engineering Units:
• W: 93.040025 × 1 = 93.04 W (Watts) • kW: 93.040025 × 0.001 = 0.09304 kW (Kilowatts) • MW: 93.040025 × 1 × 10⁻⁶ = 9.304002 × 10⁻⁵ MW (Megawatts) • hp: 93.040025 × 0.001341 = 0.1248 hp (Horsepower (Mechanical)) • PS: 93.040025 × 0.00136 = 0.1265 PS (Metric Horsepower (PS)) • BTU/h: 93.040025 × 3.4121 = 317.47 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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Explore interconnected physical dimension converters within the Thermodynamics & Heat cluster (ISO 80000-5:2019).