Calculadora de Dimensionamento de Aquecedor — Formula
## Water Heater Sizing
**Daily Demand = Occupants x Gallons per Person**
**BTU/hr = Demand x 8.33 x Temp Rise / Recovery Hours**
The constant 8.33 is the weight of one gallon of water in pounds. Tank size is rounded up to the nearest standard 10-gallon increment.
**Daily Demand = Occupants x Gallons per Person**
**BTU/hr = Demand x 8.33 x Temp Rise / Recovery Hours**
The constant 8.33 is the weight of one gallon of water in pounds. Tank size is rounded up to the nearest standard 10-gallon increment.
Exemplo Resolvido
A household of 4 using 20 gallons each, 70 degF rise, 1-hour recovery.
- Daily demand = 4 x 20 = 80 gal
- Tank size = round up to 80 gal
- BTU = 80 x 8.33 x 70 / 1 = 46,648 BTU/hr