How many watts does it take to evaporate water?

After some research, I found that it takes approx. 2.3 Megajoules to evaporate 1 kilogram of water which is @ room temp. Since the mass of room temp water = approx. 1Kg, this means it would take approx. 7,500 watts-hours to completely evaporate 1 liter of water in 5 minutes.

What is the formula for evaporation?

The Penman formula for the evaporation rate from a lake is simplified to the following: E 0 = 700 T m / ( 100 − A ) + 15 ( T − T d ) ( 80 − T ) ( mm day − 1 ) where Tm = T + 0.006h, h is the elevation (metres), T is the mean temperature, A is the latitude (degrees) and Td is the mean dew-point.

How do you calculate heat of evaporation?

Use the formula q = m·ΔHv in which q = heat energy, m = mass, and ΔHv = heat of vaporization.

How do you calculate evaporation time?

This reflects the volume of liquid that has evaporated. For example, 500 mL – 495 mL = 5 mL. Divide the volume of liquid that evaporated by the amount of time it took to evaporate. In this case, 5 mL evaporated in an hour: 5 mL/hour.

How do you calculate evaporation loss in reservoirs?

In this method the evaporation is determined by the equation : E = P+I-O+U+S, where, E = evaporation P = precipitation on the water surface I = surface inflow O = surface outflow U = underground inflow or outflow and S = change in storage.

What is the formula to calculate the heating time of water?

The formula to calculate the heating time of water is as follows: and the result is the heating time in seconds. 4168 is the constant for the heat capacity of water and means that it takes 4168 joules of energy to increase the temperature of 1 kilogram of water by 1 degree Celsius. The heating power is in watts in the formula.

How many joules does it take to heat 1 kg of water?

4186 is the constant for the heat capacity of water and means that it takes 4186 joules of energy to increase the temperature of 1 kilogram of water by 1 degree Celsius. The heating power is in watts in the formula. A watt is defined as joules per second, e.g. 1W = 1 j/s = 1 joule per second.

What is the equation for time and Watts?

The equation for time is: Where:t= time (s)J= energy (joules)W= power (W) Go to the SI Units Explained Page. The equation for watts is: Where:W= power (watts)J= energy (joules)t= time (s) Power, energy and time calculators. More SI Unit Calculators.

What is the constant for the heat capacity of water?

4168 is the constant for the heat capacity of water and means that it takes 4168 joules of energy to increase the temperature of 1 kilogram of water by 1 degree Celsius. The heating power is in watts in the formula.

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