The conversion is not direct, since watts are units of power, while BTU/Hr
represents energy per hour of equipment operation. So, in this case, watts will represent the power dissipation of a product.
1 watt = 3.412141633 BTU/Hr
It works both ways, of course:
1 BTU/Hr = 0.29307107 watts
The above is mathematically correct, but I think how it represents the time value is confusing. I've left it for reference purposes.
A Watt is an instantaneous measure of power. It assumes no unit of time. A Watt-Second on the other hand, is 1 Watt of power for 1 Second, which *is* a unit of energy. 1 Watt-Second is equivalent to 1 Joule. A 60 watt lightbulb turned on for exactly 1 second uses 60 Watt-seconds or 60 joules of energy.
BTU on the other hand, is a measure of energy and time is implicit in the unit. 1 BTU is equivalent to approx 1055 Joules.
1 Watt-Second = ~0.00095 BTU.
A 1000 Watt heater, running for 1 hour(3600 seconds) would consume 1KiloWatt-Hour(KWH) of energy. Or 3,600,000 Joules.
1KiloWatt-Hour = 3412 BTU.
OR
1Watt-Hour = 3.412 BTU
While you could divide both sides by Hours and get a comparison of power wherein 1W = 3.412 BTU/hr. I think comparing energy in the forms of KWHs and BTUs is more useful than the other way around.
Chat with our AI personalities
To convert watts per meter squared per degree Celsius to BTU per hour per degree Fahrenheit, you can use the following conversion factors: 1 Watt per meter squared per degree Celsius = 0.317 BTU per hour per foot squared per degree Fahrenheit.
To convert BTU per hour to frigorias per hour, you can use the conversion factor 0.251995760032 BTU per hour is equal to 1 frigoria per hour. Therefore, 3988777 BTU per hour is approximately equal to 15886.05 frigorias per hour.
You can't convert that.* A BTU is a unit of energy. * A watt is a unit of power (energy per unit time).
One BTU per hour is equal to approximately 0.00029307107 kilowatts. To convert 25,000 BTU per hour to cubic meters, you first convert it to watts (25,000 BTU/hr = approximately 7,328 watts). Then you can use the power formula, Power (W) = Volume flow rate (m^3/s) * Density of air (kg/m^3) * Specific heat of air (J/kg*K) * Temperature change (K) to calculate the volume flow rate in cubic meters.
To convert watts to kilowatts, you divide by 1,000. Therefore, 500 watts is equal to 0.5 kilowatts. To convert minutes to hours, you divide by 60. So, 500 watts per minute is equivalent to 0.5 kilowatts per 60 minutes, or 0.5/60 = 0.00833 kilowatts per hour.