It takes about 4.18 Joules of energy to heat 1 gram of water by 1 degree Celsius. Therefore, to heat 1 liter (1000 grams) of water by 1 degree Celsius, it would require about 4180 Joules. Converting this to watts depends on the time taken to heat the water.
newtest3
with a fat stick
2.4705 watts/hour
"Watt" is a rate of moving energy. Anynumber of watts can heat your liters,but the less watts you use, the longer the job will take.
It would take approximately 250,000 watts to raise the temperature of 200 liters of water from 83°C to 84°C in one minute. This calculation is based on the specific heat capacity of water and the formula for calculating energy required to raise the temperature of a substance.
It takes approximately 4.184 Joules of heat to raise the temperature of 1 gram of water 1 degree C. 1 Joule is the energy of 1 Watt for 1 second (or 3,600,000 Joules equals 1 Kilowatt-hour). In more real world numbers: It takes 69.7 watts 1 minute to heat a liter of water 1 degree C; or 146.6 watts in 1 minute to heat a gallon of water 1 degree F. A watt is a watt, weather it comes from resistance, radiant or induction. The only variations will come from the efficientcy of the heat source's design and how it is being used.
Assuming you got that number off an electric kettle it is because that is how much power is needed to heat the water. The number of watts actually measure how much energy the kettle is designed to use. Water is very hard to heat compared to other liquids(or to cool). So it takes a lot of watts to get the kettle to heat the water.
It depends on the how many degrees you wish to change the water and the wattage of the heater. Obviously a 1500 watt heater will do it faster than a 1000 watt heater. You might want to begin by looking at the heat transfer formula: heat in joules equals mass times change in temperature times specific heat of the material (water in this case).
Yes
2 liters of hot water will have more heat energy than 1 liter of hot water because there is a greater quantity of water to hold heat energy. The total heat energy in a system is directly proportional to the mass of the substance and its temperature.
amount of energy required to heat 1 liter of water completely depends on the desired change in temperature. q = Cg m ∆T ∆T = q/ (Cg x m) = 4180/(4.18 x 1000) = 1 4180 J would heat 1 liter of water by 1 oC