Frequent question: How many joules does it take to boil a gallon of water?

How much energy does it take to boil 1 gallon of water?

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.

How many joules does it take to boil water?

At 1 atm, water freezes at 0° C and boils at 100° C. The energy required to change water from a liquid to a solid is 333.7 kJ/kg while the energy required to boil water is 2257 kJ/kg.

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

Quantifying Specific Heat

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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.

How much electricity does it take to boil water?

But for simplicity’s sake, let’s return to Earth and a sea-level kitchen. In our kitchen, we need to get those 500 mL of water from room temperature (21C) to boiling (100C) by adding energy – 165,000 Joules (or 0.046 kilowatt hours), to be precise – in the form of heat.

How much energy does it take to evaporate a gallon of water?

It takes 8,092 BTUs to evaporate one gallon of water. Natural gas has a heating value of 1,000 BTUs per cubic foot (1 Therm = 100,000 BTUs). Approximate cost of natural gas is $0.50 per Therm.

How much does a gallon of water weigh?

One US liquid gallon of fresh water weighs roughly 8.34 pounds (lb) or 3.785 kilograms (kg) at room temperature.

How many joules does it take to boil a kettle?

The power reading in watts is the energy in joules transferred electrically in one second by the heating element circuit. For the small kettle the rate is about 1,000 joules per second. For large the kettle it is close to 3,000 joules per second.

How many joules would it take to boil 10 g of water?

It would take 200 J of energy.

When you boil water does it remove oxygen?

no, boiling water simply converts water into its gaseous state. The gas still has Hydrogen and Oxygen in it. If you want to remove Oxygen from water you have to use electrolysis to break the strong molecular bond between Hydrogen and Oxygen.

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How much energy is in a gallon of water?

A brute force approach like this would demand 2.4 kWh of thermal energy for every gallon of water produced (or 633 kWh/m³)!

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

Heating a gallon of water by 1°F with no losses thus takes 8.33 Btu x 1/3413 kWh/Btu = 0.00244 kWh.

How many Joules are in a kW?

Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s) which means that 1 kW = 1000 J/s.

Is it cheaper to boil water by gas or electric?

Because gas is cheaper than electricity, it works out slightly cheaper to boil water on a gas hob than using an electric kettle, as long as you are boiling just the quantity you need and switch off the hob as soon as it has boiled.

Is it cheaper to boil a kettle or run the hot tap?

The high initial price plus installation, running and maintenance costs means that an instant hot water tap will not work out cheaper than a kettle for the majority of households. Although for households who get through large amounts of boiling water will get better value from a tap.

Is it cheaper to boil water in a kettle or microwave?

Microwave is only 60% efficent in using energy relative to what energy goes in and the microwaves that come out. Typically is is operating at about half the efficiency in my kitchen relative to boiling water in a kettle. The kettle wins out.