How do you calculate latent heat?
Table of Contents
How do you calculate latent heat?
Latent Heat
- is a measure of the heat energy (Q) per mass (m) released or absorbed during a phase change.
- is defined through the formula Q = mL.
- is often just called the “latent heat” of the material.
- uses the SI unit joule per kilogram [J/kg].
How do you solve for latent heat of fusion?
Find the latent heat of fusion, Lf, according to Lf = q ÷ m by dividing the heat, q, absorbed by the ice, as determined in step 3, by the mass of ice, m, determined in step 4. In this case, Lf = q / m = 2293 J ÷ 7.0 g = 328 J/g.
How do you calculate latent heat of steam?
Latent Heat ( he ) = hg – hf = 2676 – 419 = 2257 KJ / Kg. Cp – Specific Heat of Steam at Constant Pressure, which can be considered as 1.860 KJ/Kg. °C, Ts – Temperature of super heated Steam, Tf – Saturation temperature i.e., 100°C.
What is latent heat 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 happens when latent heat is released?
Latent heat of condensation is energy released when water vapor condenses to form liquid droplets. The temperature does not change during this process, so heat released goes directly into changing the state of the substance. It is expressed as kg/mol or kJ/kg.
What are latent heat loads?
Regarding HVAC, latent energy essentially refers to the relative humidity or moisture in the air. A high latent load would mean that the relative humidity was high. However, an air temperature of 28 °C at a relative humidity of 90 \% would feel hot and clammy.
How do you calculate latent?
Ans: Specific latent heat is denoted by L and it is a measure of the heat energy (Q) per mass (m) released or absorbed during a phase change. It can be defined through the formula: Q=mL and its SI unit is Joule per kilogram (J/kg).
What is the formula for latent heat of air?
The formula for latent heat is given by, L = Q / M L = 300 / 5 L = 60 k.cal/kg
What is the difference between latent heat and latent heat?
According to the different phases, it has different names like the heat of condensation, the heat of vaporization, etc. The amount of heat energy absorbed or released for a phase change is known as latent heat. Determine the latent heat of 5 kg substance if the amount of heat for a phase change is 300 k.cal.
What is latlatent heat?
Latent heat is the heat used to convert a solid to a liquid or vapour phase, or a liquid to a vapour phase. The heat of condensation, the heat of vaporization, and so on are some of the names given to it depending on the different phases. The heat or energy consumed or emitted during a phase change of a material is known as latent heat.
What is the formula for heat of condensation?
According to different phase, it has different names like heat of condensation, heat of vaporization etc. The amount of heat energy absorbed or released for a phase change is known as latent heat. The latent heat formula is given by, L = Q / M.