how many btus to heat 1 gallon of water 1 degree?
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One BTU is the amount of heat energy required to raise one pound of water by 1ºF. Water weighs 8.33 pounds per gallon so we can calculate that one gallon of water requires 8.33 BTU to raise the temperature 1ºF.
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For water at its normal freezing point of 0 ºC, the specific heat of Fusion is 334 J g-1. This means that to convert 1 g of ice at 0 ºC to 1 g of water at 0 ºC, 334 J of heat must be absorbed by the water.
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A 50-gallon hot water heater with 5,500-watt elements set to 120 degrees takes about 1 hour and 20 minutes to heat water coming in to the unit at 60 degrees. Conversely, when the water entering this same tank is 40 degrees, it takes 1 hours, 47 minutes to heat it up.
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1 gallon of water will contain about 1.22 times 10^23 molecules.
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Each pound of ice produces about 0.12 gallons of water. Since it takes 2,100 calories to raise a gallon of water one degree, 0.12 gallons of water will absorb about 12,000 calories in the process of warming from 32° to 80°.
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It takes 100 calories to heat 1 g. water from 0˚, the freezing point of water, to 100˚ C, the boiling point. However, 540 calories of energy are required to convert that 1 g of water at 100˚ C to 1 g of water vapor at 100˚ C. This is called the latent heat of vaporization.
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How many cubic feet of natural gas are in 1 British thermal unit? The answer is: 1 BTU equals 0.0010 cu ft N.G.
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A typical 50-gallon electric tank runs at 4500 watts. From above, heating a gallon of water by 1°F takes 8.33 BTU. Heating from 68°F to 104°F would by a 36°F rise, or 36 x 8.33 = 300 BTU to heat 1 gallon of water.
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Quantitative experiments show that 4.18 Joules of heat energy are required to raise the temperature of 1g of water by 1°C.
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The specific heat capacity of water is 4,200 Joules per kilogram per degree Celsius (J/kg°C). This means that it takes 4,200 J to raise the temperature of 1 kg of water by 1°C.
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Cost to heat water a 40-gallon tank with electricity Annual consumption is figured in therms as 41,045 Btu/EF x 365/100,000, or 149.8 therms at 100% efficiency. A 2008 EPA report showed yearly energy use figures as follows: 2195 kWh for a 50-gallon air-based heat pump with a 2.00 energy factor.
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BTU (British Thermal Unit) For W to BTU/h conversions, 1 W is equal to 3.41 BTU/h.
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What is a BTU? A BTU (British Thermal Unit) describes the amount of energy to raise 1 lb of water 1 degree Fahrenheit in one hour. Water equals 8.3 lbs per gallon. To boil one gallon of water starting 70°F in 1 hour you will need 8.3 x (212-70) = 1,178.6 BTUs.
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One gallon of propane has 91,502 BTUs (or British thermal units).
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A basic rule of thumb is that it takes 30 BTUs for every 1,000 square feet. At the most basic level, if you have a 1,000 square foot house, you'll look for a furnace that has 30,000 BTU output.
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More information from the unit converter How many btu in 1 gram calorie? The answer is 0.0039673727240424.
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Cast iron radiators require about 14 liters of hot water per kW of heat output (1 KW or kilowatt = 3,412 BTUs) For North Americans, 1 gallon = 4.546 liters. Fan coil heaters use about 8 liters of water per KW of heat output.