What is the specific latent heat of fusion of water?
334
Specific latent heat
| Substance | Specific latent heat of fusion (kJ/kg) | Specific latent heat of vaporisation (kJ/kg) |
|---|---|---|
| Water | 334 | 2,260 |
| Lead | 22.4 | 855 |
| Oxygen | 13.9 | 213 |
What is the latent heat of fusion of water at 1 atm?
Latent Heat of Fusion and Vaporisation
| Substance | Specific latent heat of fusion kJ.kg-1 | Specific latent heat of vaporisation kJ.kg-1 |
|---|---|---|
| Water | 334 | 2258 |
| Ethanol | 109 | 838 |
| Ethanoic acid | 192 | 395 |
| Chloroform | 74 | 254 |
What is heat fusion of water?
The heat of fusion of water is unusually high. The heat of fusion is the quantity of heat necessary to change 1 g of a solid to a liquid with no temperature change (Weast, 1964, p. F-44). It is also a latent heat and is sometimes called the latent heat of fusion.
Is latent heat of fusion?
The latent heat associated with melting a solid or freezing a liquid is called the heat of fusion; that associated with vaporizing a liquid or a solid or condensing a vapour is called the heat of vaporization.
What is latent heat explain with example?
For example, when a pot of water is kept boiling, the temperature remains at 100 °C (212 °F) until the last drop evaporates, because all the heat being added to the liquid is absorbed as latent heat of vaporization and carried away by the escaping vapour molecules. …
What is latent heat and its types?
Latent heat is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process. Two common forms of latent heat are latent heat of fusion (melting) and latent heat of vaporization (boiling).
What is the example of latent heat?
For example, when a pot of water is kept boiling, the temperature remains at 100 °C (212 °F) until the last drop evaporates, because all the heat being added to the liquid is absorbed as latent heat of vaporization and carried away by the escaping vapour molecules.
What are three types of latent heat?
There are three different types of latent heats, Latent Heat of Fusion, Latent Heat of Vaporization, Latent Heat of Sublimation.
What is latent heat of fusion and cite an example?
For example, the latent heat of fusion of one kilogram of water, which is the amount of heat energy that must be supplied to convert 1 kg of ice without changing the temperature of the environment (which is kept at zero degrees celsius) is 333.55 kilojoules.
How do you calculate latent heat?
Latent heat calculation. All we need to know to compute the latent heat is the amount of substance and its specific latent heat. The formula is: Q = m * L, where. m [kg] is the mass of the body, L [kJ/kg] is the specific latent heat, Q [J] is the heat absorbed or released depending on the direction of the transition.
What is the cause of latent heat?
Sensible heat causes change in temperature due to contact with colder or warmer air of surfaces . Latent heat is the energy absorbed by or released from a substance during a phase change from a gas to a liquid or a solid or vice versa.
What is the formula of latent heat?
Answer: The latent heat is given by the equation: Q= m L. substituting the value of m, and the specific latent heat. Q= 0.5 Kg * 334 KJ/Kg = 167 KJ = 167000 J. This is the amount of energy released when water is melting at 0 °C.
What are the applications of latent heat?
Application of latent heat thermal energy storage in buildings: State-of-the-art and outlook Introduction. Thermal energy storage for space heating and cooling of buildings is becoming increasingly important due to the rising cost of fossil fuels and environmental concerns. Operative principles of applying PCMs in buildings. As we know, many factors influence the indoor air temperature of a building. PCMs and thermophysical properties.
