How many BTU's does it take to boil a gallon of water?

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.

People also ask, how many BTUs does it take to boil one pound of water?

lbs of water x temperature rise = BTUs required for one hour (1 lb of water x 1 degree Fahrenheit) = 1 BTU for 1 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.

How many kilowatts does it take to heat a gallon of water?

Energy required to heat one gallon of water, and one tank of water. Heating a gallon of water by 1°F with no losses thus takes 8.33 lbs x 1 Btu/lb = 8.33 Btu's. Heating a gallon of water by 1°F with no losses thus takes 8.33 ÷ 100,000 = 0.00008.33 therms. One kWh is 3413 Btu's, so one Btu is 1/3413 = 0.000293 kWh.

How many BTU's do I need for my hot water heater?

A common input is 34,000 BTUs on a 40-gallon tank and 36,000 BTUs on a 50-gallon tank. The higher the BTU input and efficiency, the faster the recovery. Electric water heaters typically have one 5,500-watt or two 4,500-watt elements.

How many BTU's are in one pound of steam?

1 pound of steam is equal to 970 BTU (or an easy to remember rule of thumb is 1 pound of steam is equal to 1000 BTU. 1 pound of water is equal to a 16 oz tall boy (by volume)….when you heat that tall boy hot enough to make steam it expands almost 1700 times its original volume.

How many Btu are in a gallon of propane?

1 gallon of heating oil = 138,500 Btu (distillate fuel with 15 to 500 parts per million sulfur content)
1 barrel of residual fuel oil = 6,287,000 Btu.
1 cubic foot of natural gas = 1,037 Btu.
1 gallon of propane = 91,333 Btu.

Can Steam be hotter than 212 degrees?

After water changes from a liquid to a gas (at 212 degrees Fahrenheit) it can actually heat up much hotter than that. In the gas form, water molecules are spread out and have a lot of room to move and get much hotter than the other two phases (liquid and ice). And water freezes at 32 degrees Fahrenheit.

Is steam hotter than boiling water?

In the case of supercooling, boiling water would also be hotter than steam at the same pressure. The opposite would be true for superheated steam. Pro tip: don't do it - your eggs will always be undercooked! Water boils at a lower temperature at elevation because the atmospheric pressure is lower.

What is the temperature of steam at 150 psi?

Saturated Steam Temperatures

Pressure	Temperature	Temperature
(p.s.i)	(°F)	(°C)
10	239.4	115.2
15	249.8	121.0
20	258.8	126.0

How many Btus does it take to evaporate a gallon of water?

Latent heat is the amount of heat that one pound of water will absorb when it goes from a liquid to a vapor. This number varies slightly with pressure, but is about 970 Btu's per pound at one atmosphere. In other words, it takes 970 Btu's to evaporate one pound of water.

What is the latent heat of vaporization of water?

It is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure. When a material in liquid state is given energy, it changes its phase from liquid to vapor; the energy absorbed in this process is called heat of vaporization (or evaporation).

What is the C of water?

The specific heat of water is 1 calorie/gram °C = 4.186 joule/gram °C which is higher than any other common substance. As a result, water plays a very important role in temperature regulation.

Why does the temperature of h20 not increase when it is boiling?

For instance, when water is boiling, adding heat does not increase its temperature. This happens at the boiling temperature of every substance that can vaporize. At the boiling temperature, adding heat energy converts the liquid into a gas WITHOUT RAISING THE TEMPERATURE.

Why does the temperature of boiling water stay the same?

Temperature and Boiling. When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. In addition, gas molecules leaving the liquid take away heat energy. Therefore the temperature of the liquid remains constant during boiling.

How do you evaporation and boiling differ?

Evaporation and boiling are both processes that take place in liquids where a change of state occurs liquid → gas. When evaporation occurs, particles only change into gas at the surface of the liquid. When boiling occurs particles change from liquid to gas throughout the whole liquid.

What is the difference between evaporation and boiling point?

Evaporation usually occurs on the surface. Evaporation may occur when the partial pressure of vapor of a substance is less than the equilibrium vapour pressure. Boiling is a phase transition from the liquid phase to gas phase that occurs at or above the boiling temperature.

Why is evaporation different from boiling?

Evaporation is a free surface process. Boiling is an entire bulk process that gets triggered from the solid interfaces and phase change occurs at the free surfaces. Boiling happens at a given temperature when the saturation vapour pressure of the liquid equals the atmospheric pressure.

What is the differences between evaporation and boiling?

Evaporation may occur when the partial pressure of vapor of a substance is less than the equilibrium vapour pressure.Boiling is a phase transition from the liquid phase to gas phase that occurs at or above the boiling temperature. Originally Answered: What is the main difference between boiling and evaporation?

What are the factors affecting the rate of evaporation?

The rate of evaporation is affected by the following factors:

Temperature: The rate of evaporation increases with an increase in temperature.
Surface area: The rate of evaporation increases with an increase in surface area.
Humidity: The amount of water vapour present in the air is called humidity.

How many BTU's does it take to boil a gallon of water?

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