Quick Answer: What Is Latent Heat Load?

How do you calculate latent heat?

Latent Heat Of Fusion FormulaL = specific latent heat of fusion of substance.The total amount of heat absorbed or liberated by the material is.Let c be the specific heat of the metal.Heat gained by the metal.Q = 60 × c × (100 – 20)Q = 60 × c × 80 cal.Heat given is equal to Heat taken.0.5 × 540 = 60 × c ×80..

What is an 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 do you get when you mix sensible and latent heat?

Enthalpy is the sum of the sensible and latent heat in a given air-vapor mix. It is sometimes referred to as the total heat of the air. The units for sensible heat, latent heat, and enthalpy are the same: BTU/lb of dry air.

What is the latent heat of vaporisation?

Latent heat of vaporization is a physical property of a substance. It is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure. It is expressed as kg/mol or kJ/kg.

What are the types of latent heat?

Two common forms of latent heat are latent heat of fusion (melting) and latent heat of vaporization (boiling). These names describe the direction of energy flow when changing from one phase to the next: from solid to liquid, and liquid to gas.

What is a latent load?

Latent cooling load is a measure of the amount of energy that is necessary to dehumidify the air in a building, for example, regardless of the outdoor humidity. Cooling load needs to be considered when a cooling system is being dimensioned. Latent cooling load refers to the wet bulb temperature.

What is the role of latent heat?

Latent heat plays a very important role in thunderstorms and hurricanes. Clouds form when warm air rises and the water vapor it contains condenses onto particles called cloud condensation nuclei. … When the water vapor condenses to form clouds, it releases latent heat into the atmosphere.

Can latent heat be measured?

A thermometer measures temperature. Heat energy or calorific value is measured by a calorimeter. Latent heat is the heat required for phase change. … Thus a thermometer cannot measure any temperature change when heat is supplied during phase change, otherwise known as latent heat.

Is sweating latent heat?

The heat that is absorbed when perspiration evaporates (by breaking bonds between water molecules, thereby increasing its potential energy) is called the latent heat of vaporization. … This seems like a lot of energy!

Why is latent heat hidden?

Latent heat is sometimes called the ‘hidden’ or ‘stored’ heat used to change the state of a substance without a change in temperature. … The temperature does not increase as the water (liquid) starts to evaporate and become water vapour (a gas).

What is the difference between heat and latent heat?

Specific heat is the amount of heat required to raise the temperature of a substance a certain amount. Latent heat is the amount of heat released during a change of state, i.e. the boiling of water or the melting of ice.

What is sensible load and latent load?

The sensible cooling load refers to the dry bulb temperature of the building and the latent cooling load refers to the wet bulb temperature of the building. For summer conditions the humidity influence on the selection of the HVAC equipment and the latent load as well as the sensible load must be calculated.

Can you feel latent heat?

However, although you cannot feel it, the liquid has stored all that latent heat. The only way you will observe the latent heat is if you try to transform the water back to ice. … Heat energy is conserved no matter how the phase change occurs. If you put heat into water, it can evaporate.