Convert Boiler Horsepower to Kilocalories per Hour
Convert Boiler Horsepower (BHP) to Kilocalories per Hour (kcal/h) instantly and accurately.
Conversion Formula
kcal/h = BHP × 8435.558103
About Boiler Horsepower
One boiler horsepower (BHP) ≈ 9,810 W = 33,475 BTU/h - the power to evaporate 34.5 lb of water per hour at 212°F, standardised by ASME for rating steam boilers. A small office building needs 10-50 BHP; a hospital or large plant 200-2,000 BHP. Critically, 1 BHP is ~13.1× larger than 1 mechanical horsepower (746 W) - a dangerous confusion when specifying heating equipment. 1 BHP ≈ 9,810.6 W.
About Kilocalories per Hour
One kilocalorie per hour (kcal/h) equals exactly 1.163 W. It is the natural unit for human metabolic rate: sedentary adult ~60-70 kcal/h; walking 250-350 kcal/h; vigorous cycling 500-700 kcal/h; competitive rowing ~1,200 kcal/h. Treadmills and exercise bikes display kcal/h directly. Industrial drying and evaporation calcs in older metric systems (especially Asia) used kcal/h for heat duty; 1 Mcal/h = 1.163 kW. 1 kcal/h = 1.163 W.
Quick Reference Table
| Boiler Horsepower (BHP) | Kilocalories per Hour (kcal/h) |
|---|---|
| 1 BHP | 8435.56 kcal/h |
| 2 BHP | 16871.1 kcal/h |
| 5 BHP | 42177.8 kcal/h |
| 10 BHP | 84355.6 kcal/h |
| 25 BHP | 210889 kcal/h |
| 50 BHP | 421778 kcal/h |
| 100 BHP | 843556 kcal/h |