BTU (IT) per Hour per Square Foot to Watt per Square Meter Conversion
Convert between BTU (IT) per Hour per Square Foot and Watt per Square Meter quickly and accurately.
How to Convert BTU (IT) per Hour per Square Foot to Watt per Square Meter
Conversion Formula
Example
Convert 15 Btu/(h·ft²) to W/m²:
Unit Information
Learn about the heat flux density units you're converting between
BTU (IT) per Hour per Square Foot
Btu/(h·ft²)
Definition
The BTU (IT) per hour per square foot (Btu/(h·ft²)) is an imperial unit of heat flux density equal to approximately 3.155 watts per square meter. It represents the rate of heat energy transfer per unit area, commonly used in building thermal analysis and HVAC applications where hour time units are preferred.
History/Origin
Developed for building thermal analysis and HVAC applications where hour time units are preferred, this unit became standard in building thermal analysis and HVAC system design. It provides a practical measure for heat flux density using familiar imperial and hour units.
Current Use
Commonly used in building thermal analysis, HVAC system design, and thermal engineering applications where hour time units are preferred. It is essential for calculating heat transfer rates, designing thermal insulation, and analyzing thermal performance in building applications.
Multiplier
3.155
Offset
0
Watt per Square Meter
W/m²
Definition
The watt per square meter (W/m²) is the SI unit of heat flux density, representing the rate of heat energy transfer per unit area. It quantifies the thermal energy flow across surfaces, making it essential for thermal analysis, heat transfer calculations, and energy density assessments in engineering applications.
History/Origin
Derived from the fundamental relationship between power and area in thermodynamic systems, this unit became standardized with the adoption of the International System of Units. It provides a consistent measure for heat flux density across different materials and thermal systems, enabling accurate thermal design and analysis.
Current Use
Widely used in thermal engineering, solar energy analysis, building thermal performance, and heat transfer calculations for quantifying energy flux distribution. It is essential for designing thermal management systems, analyzing solar radiation effects, and optimizing thermal insulation in various engineering applications.
Multiplier
1
Offset
0
BTU (IT) per Hour per Square Foot to Watt per Square Meter Conversion Table
| BTU (IT) per Hour per Square Foot [Btu/(h·ft²)] | Watt per Square Meter [W/m²] |
|---|---|
| 1 Btu/(h·ft²) | 3.154591 W/m² |
| 10 Btu/(h·ft²) | 31.545907 W/m² |
| 25 Btu/(h·ft²) | 78.864769 W/m² |
| 50 Btu/(h·ft²) | 157.729537 W/m² |
| 100 Btu/(h·ft²) | 315.459075 W/m² |
| 0 Btu/(h·ft²) | 0E+0 W/m² |
| -10 Btu/(h·ft²) | -31.545907 W/m² |
| -40 Btu/(h·ft²) | -126.18363 W/m² |
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