Como to Converter Kilowatts
Para Horsepower, BTU/hr, e Mais
Get o FormulasA 10 kW electric motor, a 13.4 hp engine, e a 34,100 BTU/hr heater todos produce o mesmo power. Converting entre estes unidades é essential for comparing equipment, sizing systems, e understanding specifications across diferente industries.
Passo a Passo Conversions
Kilowatts to Horsepower
- Find your power in kilowatts (e.g., 75 kW)
- Multiply by 1.341
- Result: 75 × 1.341 = 100.6 hp
Horsepower to Kilowatts
- Find your power in horsepower (e.g., 200 hp)
- Divide by 1.341 (ou multiply by 0.746)
- Result: 200 ÷ 1.341 = 149.2 kW
Kilowatts to BTU/hour
- Find your power in kilowatts (e.g., 5 kW)
- Multiply by 3,412
- Result: 5 × 3,412 = 17,060 BTU/hr
Comprehensive Tabela de Conversão
| kW | Watts | hp (mech) | PS (métrico) | BTU/hr |
|---|---|---|---|---|
| 0.5 | 500 | 0.67 | 0.68 | 1,706 |
| 1 | 1,000 | 1.34 | 1.36 | 3,412 |
| 2 | 2,000 | 2.68 | 2.72 | 6,824 |
| 5 | 5,000 | 6.71 | 6.80 | 17,060 |
| 10 | 10,000 | 13.41 | 13.60 | 34,120 |
| 25 | 25,000 | 33.53 | 33.99 | 85,300 |
| 50 | 50,000 | 67.05 | 67.98 | 170,600 |
| 100 | 100,000 | 134.10 | 135.96 | 341,200 |
Comuns Aplicações
Elétrico Motors
Motors often list ambos kW e hp:
| Motor Size | kW | hp |
|---|---|---|
| Small pump | 0.37 | 0.5 |
| Fan motor | 0.75 | 1 |
| Industrial pump | 7.5 | 10 |
| Compressor | 22 | 30 |
| Large industrial | 75 | 100 |
HVAC Systems
Heating/cooling capacity often uses BTU/hr ou tons:
- 1 ton of cooling = 12,000 BTU/hr = 3.52 kW
- Residential AC: 2-5 tons (7-17.5 kW)
- Space heater: 1-2 kW (3,400-6,800 BTU/hr)
Potência vs Energia
Don't confuse power (kW) com energy (kWh):
- Potência (kW): Rate of energy use
- Energia (kWh): Total energy consumed over time
Energia = Potência × Tempo
Exemplo: A 2 kW heater corrida for 3 hours uses 6 kWh of energy.
Electricity Cost
Utility bills charge for energy (kWh), not power (kW). A 1 kW device costs o mesmo per hour whether it's a 1 kW heater ou ten 100W bulbs.
Regional Variations
| Region | Potência Unidade | Aplicação |
|---|---|---|
| US/UK | hp (mechanical) | Vehicles, motors |
| Europe | kW, PS | Vehicles, appliances |
| Japan | kW, PS | Mixed usage |
| HVAC (US) | BTU/hr, tons | Heating/cooling |
| HVAC (intl) | kW | Heating/cooling |
| Scientific | W, kW | Todos aplicações |
Conclusão
Converting kilowatts requires diferente factors for diferente target unidades: ×1.341 for horsepower, ×1.360 for métrico horsepower (PS), e ×3,412 for BTU/hour. O kilowatt é o universal scientific unidade, while horsepower dominates automotive aplicações e BTU/hour é padrão for HVAC in o US. Understanding estes conversions helps compare equipment across diferente specification systems.