What is sensible heat?
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Sensible heat is used in contrast of latent heat. It is the heat exchanged by a system in which the exchange of heat of the system. Specific heat is an important physical property of matter. The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. The temperature of matter is a direct measure of the motion of the molecules: The greater the motion, the higher the temperature. The relationship between heat energy and temperature change is usually expressed in the form of specific heat. Given more energy the molecules will get more…
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What is latent heat?
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To understand the concept of latent heat, we must first review phase changes. Phase changes refer to a change in matter from one state to another without changing its chemical properties. Water is a great example to demonstrate this phenomena, when freezing liquid water create ice, it release quite a lot energy. The released energy helps liquid water to become solid ice during the and it keeps at 0℃.Heat energy plays an important role in changing matter from one state to another. When thermal energy is applied on a matter, normally the temperature of the matter changes, but it stays constant during…
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What is a phase change material (PCM)?
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Phase change materials ( PCM ) are substances which can absorb a large amount of latent heat energy during its physical phase change process of melting and freezing. Many materials are naturally phase change materials. So what is a PCM? A PCM what we commonly refer is engineered phase change materials which are modified by additives for better nucleation and distribution. Water is a famous PCM example, when it freezes, it releases quite a lot energy in the form of latent heat at a relatively constant temperature around 0°C. Conversely, the ice absorbs a large amount of heat to melt to 0°C ice…
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