Convert Nanowatt per square metre to Celsius Heat Unit per hour per square foot
Convert Nanowatt per square metre (nW/m²) to Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) instantly and accurately.
Conversion Formula
CHU/(h·ft²) = nW/m² × 1.761101837e-10
About Nanowatt per square metre
The nanowatt per square metre (nW/m²) equals 10⁻⁹ W/m². Used in astrophysics and cosmology for quantifying extremely weak radiation fields, such as cosmic microwave background intensity and residual thermal emission from near-absolute-zero objects. Relevant in precision cryogenic sensor calibration. 1 nW/m² = 10⁻⁹ W/m² = 10³ pW/m².
About Celsius Heat Unit per hour per square foot
The Celsius heat unit per hour per square foot (CHU/(h·ft²)) equals (9/5)×1055.05585262/(3600×0.09290304) ≈ 5.6783 W/m². The CHU (= 9/5 BTU(IT)) uses a 1 °C temperature interval instead of 1 °F; historically used in UK and Canadian heating engineering. 1 CHU/(h·ft²) ≈ 5.6783 W/m² = (9/5) × BTU(IT)/(h·ft²).
Quick Reference Table
| Nanowatt per square metre (nW/m²) | Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) |
|---|---|
| 1 nW/m² | 1.761 × 10-10 CHU/(h·ft²) |
| 2 nW/m² | 3.522 × 10-10 CHU/(h·ft²) |
| 5 nW/m² | 8.806 × 10-10 CHU/(h·ft²) |
| 10 nW/m² | 1.761 × 10-9 CHU/(h·ft²) |
| 25 nW/m² | 4.403 × 10-9 CHU/(h·ft²) |
| 50 nW/m² | 8.806 × 10-9 CHU/(h·ft²) |
| 100 nW/m² | 1.761 × 10-8 CHU/(h·ft²) |