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Any amount of heat added to any material will heat that material. Obviously, the amount of increase in heat is dependent upon the material's specific heat, its mass, and the amount of heat applied.
**Using the assumption that you wish to heat a room of 43200 cu.ft. with 3 air exchanges per hour (average), from 40 degrees to 70 degrees fahrenheit (average for New England, in the fall), then the amount of btu's per hour required would be 311,040 btu/hr.*
* {multiply volume x 0.24 btu/hr (specific heat of air) x 3 air exchanges/ hr x [temperature required - ambient temperature]}.
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To convert BTU to cubic feet per hour, you need to know the specific heat value of the fuel being burned. Once you have that information, you can use it to make the conversion. Without knowing the specific heat value, it is not possible to provide an exact conversion.
To convert cubic feet to gallons of propane, you first need to know the specific gravity of propane. On average, the specific gravity of propane is around 0.504. Therefore, 1400 cubic feet of propane would be approximately 702 gallons (1400 cubic feet / 7.48 gallons per cubic foot).
136 cubic feet / hour = 3.851 cubic metres / hour. 1 metre = 3.28 ft, so 1 cubic metre = 3.28^3 cubic feet. Therefore you divide 136 by 3.23^3
To convert cubic feet per hour to liters per minute, you can use the conversion factor: 1 cubic foot = 28.3168 liters and 1 hour = 60 minutes. So, you can multiply the cubic feet per hour value by 28.3168/60 to get liters per minute.
To convert cubic meters per hour to BTUs per hour, you need to know the type of gas. Multiply the cubic meters per hour by the energy content of the gas in BTUs per cubic meter to get the BTUs per hour.
There are approximately 0.02832 cubic meters per hour in a cubic foot per hour.