Types of heat

For example, when a pot of water on the 32F is placed on the stove is heated so that the temperature rises from 32to 212 FF is a reasonable process of heating. The temperature changed, but the state (liquid). Not boiling happened. Latent heat is the energy of molecular separation and arrangements. It cannot be measured with a thermometer. Latent heat of change causes a change of state at a constant temperature.

If a pot of water on 212F heats up, it comes to a boil. As heat is added, it will continue to cook until all the water turns into vapor (gas). Until it boils, temperature stays at 212F. This covert heating process. The temperature does not change, but changes its state from liquid to gas. As we saw earlier, a lot of energy will go to the branch and rearranging molecules of water to the liquid in the gas. Characteristics of the refrigerant is its ability to boil; that is, to change from liquid to gas at low temperature. The total heat of the material is its reasonably plus latent heat. The total amount of thermal energy, of any material, or change if the temperature or state changes. Liquids and gases contain both sensible and latent heat.

For example, the water at 32F contains explicit heat necessary to warm solid water (ice), to its melting point (32F). It also contains latent heat required to melt 32F ice in 32F water.

Both sensible and latent heat to enter a space and become a cooling load which must be removed by refrigeration equipment in order to maintain comfort. When it's 95F on the street, the heat from out in the fresh air and indoors through the roof, ceiling, walls, Windows and doors of the building. This adds explicit heat to the air, raising its temperature. Radiant heat also adds the sensible heat in the air, like sunlight penetrates through the window and is absorbed by objects inside. Sensible heat is added to the air of people, lighting and cooking. Latent heat is added something that turns water into steam cooking, for instance. Although such latent heat additions are not raise the temperature of the air in the room, they increase its relative humidity. The total amount of heat entering a space-the total cooling load for this space. It contains sensible heat (actual load on the cooling system) plus latent cooling load).

Sensible heat in a warm house moves in the cold refrigerant cooling coil as air flows over it. Coil provides cooling capacity, as it removes the physical heat from the air, reducing the temperature of air of 80F to 53 F. This process also removes the latent heat from the air as water vapor in the air changes the state of the fluid and condenses on the cold surfaces of the heat exchanger. It's the same thing we see when water vapour condenses on the outside of a glass of iced tea. The air coming from the coil, not only colder, but also drier than when he entered. This process allows the air to absorb as sensible and latent heat, when he gets into space.

Heating coils add sensible heat to the air. In such cases, the coil provides heating power. For example, the return of the air heated premises in a 70F heated to 953F as the heat from the fluid inside the coil is held to the cooler air flowing through the coil.

Latent heat transfer is mainly of mechanical refrigeration systems heat transfer. This close-up look cooling coil shows how the cooling air is. The liquid refrigerant into the internal heat exchanger pipes boils at a fairly constant temperature. As a refrigerant flows through the coil pipe, more and more liquid refrigerant boils away until all this gas. Latent heat required to boiling refrigerant is taken from the air into the refrigerant, thus cooling the air. This boiling process called evaporation in the refrigeration business. The coil where evaporation is called the evaporator. Latent heat transfer occurs at low temperature, due to the nature of low pressure refrigerant in this part of the system. This chart shows how the hidden transfer of the heat is used for heating the air.

Refrigerant in the outdoor coil condenses (gas-to-liquid) at a relatively constant temperature. As a refrigerant flows through the coil, more and more it is condensed from the gas in the liquid until it is completely liquid.

Latent heat required for the condensation of the gas deviates from the refrigerant in the air heating the air. In the refrigeration business, this process is called condensation. Coil where condensation occurs is called the condenser.The temperature at which condensation occurs is higher than the temperature of evaporation, as the pressure in the condenser higher than in the evaporator...