What is latent heat of condensation?
As the latent heat of steam at atmospheric pressure is 2257 kJ/kg the amount of flash steam produced will be 299/2257 = 0.133 kg/kg of condensate.
What is the formula for latent heat of condensation?
Q2. What is the Specific Latent Heat of a Material? 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).
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.Apr 24, 2016
How do you calculate the heat of condensation in a steam?
Calculate the total condensed liquid flow based on the heat load from the process reactor. This is determined by dividing the total heat removed by the system by the latent heat contained in the steam. The calculation is 30,000 / 794, which is 37.8 lb/hr of liquid condensate.Mar 13, 2018
What is latent heat of fusion and vaporization?
Latent heat of fusion is the amount of heat that a solid substance requires to change its phase from solid phase to liquid phase at a constant temperature while Latent heat of vaporization is the amount of heat that a liquid substance requires to change its phase from the liquid phase to vapor phase at a constant ...May 28, 2018
Is latent heat of vaporization same as latent heat of condensation?
The latent heat of condensation has the same value as the latent heat of vaporization, but heat is released in the change in phase from vapor to liquid.
What is L * latent heat?
latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature. ... The latent heat is normally expressed as the amount of heat (in units of joules or calories) per mole or unit mass of the substance undergoing a change of state.Nov 6, 2021
What is latent heat of condensation Upsc?
So latent heat of condensation is the heat released when gases turn into liquid.
What is the formula for latent heat of vaporization?
Hence, we can conclude that The specific latent heat (L) of a material: It is a measurement of the amount of heat energy (Q) emitted or absorbed per mass (m) during a phase shift. The formula Q = mL is used to describe it.
What is mean by latent heat of steam?
Latent heat of steam is commonly known as the latent heat of vaporization. Latent heat of vaporization is the amount of heat required to convert 1 Kg of liquid to vapour or steam. The value of latent heat is the property of the individual substance and it varies depending on the substance.
What is VF and VG in steam table?
vf = Specific volume of saturated water (liquid). vg = Specific volume of saturated steam (gas).
What is steam condensation?
What is Condensate? Condensate is the liquid formed when steam passes from the vapor to the liquid state. In a heating process, condensate is the result of steam transferring a portion of its heat energy, known as latent heat, to the product, line, or equipment being heated.
What happens to the steam during condensation?
Like the phase change from ice to water, the process of evaporation is also reversible. The same amount of heat that produced the steam is released back to its surroundings during condensation, when steam meets any surface at a lower temperature.
How do you convert steam to condensate?
Latent Heat vs.
In steam-using industries, Latent Heat refers to the energy required to transform water into steam, also known as the Enthalpy or Heat of Vaporization. By absorbing this Latent Heat, water becomes steam, and by releasing it, steam reverts to high temperature water (condensate).
What is the cause of latent heat?
- The heat that causes these changes is called latent heat. ... During the cooling cycling, condensation forms within the unit due to the removal of latent heat from the air.
Why is latent heat referred to as hidden heat?
- So the substance was gaining energy but it was "hidden" from observers because the temperature was not rising. That is why they called the heat they transferred to the substance during phase changes "latent heat" (i.e. hidden heat).
What process releases latent heat energy?
- Latent heat is thermal energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process — usually a first-order phase transition.
What exactly is latent heat of steam?
- Latent heat of steam is defined as the amount of heat required to change a unit mass of waster from 100 degree Celsius to steam at the same temperature . The latent heat of Vaporization for steam is 2.26 * 106 J kg -1 or 540 Cal g -1.
What is the difference between saturated steam and latent heat?What is the difference between saturated steam and latent heat?
Steam generated here is called saturated steam though, heat energy which make saturated water into saturated steam is called latent heat. Latent heat depends on pressure and it becomes lower as pressure becomes higher. Latent heat becomes zero when pressure reaches 22.06Mpa.
Is heat of condensation the same as latent heat?Is heat of condensation the same as latent heat?
The heat of condensation is a heat of state change. It is the same amount of energy as latent heat and two to five times larger compered with sensible heat. KENKI DRYER uses saturated steam as its heat source and it is a dryer using heat of condensation. It hits steam indirectly to materials to be dried.
What is the latent heat of condensation at 16 MPa?What is the latent heat of condensation at 16 MPa?
Latent heat of condensation – water at 16 MPa (pressure inside a pressurizer) hlg = – 931 kJ/kg The heat of condensation diminishes with increasing pressure, while the boiling point increases. It vanishes completely at a certain point called the critical point.
What is the amount of condensate produced from a flash of steam?What is the amount of condensate produced from a flash of steam?
It must therefore get rid of 721−422, i.e. 299 kJ surplus heat; a flash of steam is the inevitable result. As the latent heat of steam at atmospheric pressure is 2257 kJ/kg the amount of flash steam produced will be 299/2257 = 0.133 kg/kg of condensate.