It's been a lot of calculations! 😱 We can disagree on many things, but we certainly agree that using the BTU water calculator is more straightforward than all those water heating formulas. Celsius (rounded) Celsius (fan oven) 350☏. If you want to convert 350 degrees F to celsius, heres the conversion guide: Fahrenheit. Then, the total heat needed to take those 2 kilograms of water from -20 to 200☌ is the sum of the five heats: Its often referred to as the magic number for baking. Sensible heat, to take the steam from 100 to 200☌:.Latent energy, to evaporate the water at 100☌:.Sensible heat, to take the liquid water from 0 to 100☌:.Sensible heat, to take the ice from -20 to 0☌:.Heating 2 kg of water from -20 to 200☌ involves various steps and types of heat:

We need 1996 J to heat 1 kg of steam by one degree (Celsius or Kelvin).Īs 1 kg of water represents 1 liter, 4190 J is also energy to heat 1 litre of water by 1 degree (liquid water).We need 4190 J to heat 1 kg of liquid water by one degree (Celsius or Kelvin).We need 2108 J to heat 1 kg of ice water by one degree (Celsius or Kelvin).The specific heat capacity is a material property, which equals 2108 J/(kg K) for ice water, 4190 J/(kg K) for liquid water and 1.996 J/(kg K) for steam.Therefore, we need 2264705 J to evaporate 1 kg of water (something that occurs at 100 ☌). Enthalpy of vaporization is a material property that equals 2264705 J/kg for water. If the phase change involves evaporation (converting liquid water to steam), the specific latent heat is called enthalpy of vaporization or latent heat of vaporization.Therefore, we need 334000 J of heat to melt 1 kg of water (which occurs at 0 ☌). Enthalpy of fusion is a material property that equals 334000 J/kg for water.

If the phase change involves melting (converting ice to liquid water), the specific latent heat is called enthalpy of fusion or latent heat of fusion.

There are some essential points to consider about the terms of the previous equations: The total heat ( Q total) is then the sum of the quantities associated with the latent and sensible heat: On the other side, taking it from 20 to 200☌ involves sensible and latent heat, as at some intermediate point (100☌), we require some additional energy (latent heat) to evaporate the water. For example, under atmospheric conditions, taking water from 20 to 30☌ only involves sensible heat.

Convert watts to temperature calculator