Convert Grains per minute to Pounds per hour
Convert Grains per minute (gr/min) to Pounds per hour (lb/h) instantly and accurately.
Conversion Formula
lb/h = gr/min × 0.008571428571
About Grains per minute
The grain per minute (gr/min) equals 6.479891×10⁻⁵/60 ≈ 1.080×10⁻⁶ kg/s. This unit appears in HVAC humidity engineering: moisture added or removed from conditioned air is traditionally expressed in grains of water per pound of dry air per minute in US practice. A whole-house humidifier may evaporate 300-600 gr/min at design load. 1 gr/min ≈ 1.080×10⁻⁶ kg/s.
About Pounds per hour
The pound per hour (lb/h) equals 0.45359237/3600 ≈ 1.260×10⁻⁴ kg/s, the dominant unit in US process engineering and steam-boiler rating. Packaged steam boilers are rated in lb/h of steam output (typical range 100-2 000 lb/h); HVAC cooling-coil latent loads are calculated in lb/h of moisture; flue-gas emission inventories are reported in lb/h per stack. 1 lb/h ≈ 1.260×10⁻⁴ kg/s.
Quick Reference Table
| Grains per minute (gr/min) | Pounds per hour (lb/h) |
|---|---|
| 1 gr/min | 0.00857143 lb/h |
| 2 gr/min | 0.0171429 lb/h |
| 5 gr/min | 0.0428571 lb/h |
| 10 gr/min | 0.0857143 lb/h |
| 25 gr/min | 0.214286 lb/h |
| 50 gr/min | 0.428571 lb/h |
| 100 gr/min | 0.857143 lb/h |