潜热和明智的热量之间的差异

潜热与明智的热量

当系统的能量因系统及其周围环境之间的温度差而变化时，我们说能量已作为热量转移（Q）。传热是从高温到低温的，这是根据温度梯度的。

Latent Heat

当物质发生相变时，能量被吸收或释放为热。潜热是在相变时从物质中吸收或释放的热量。当吸收或释放时，这种热量变化不会导致温度变化。相位变化意味着固体进入气态或液体进入固相，反之亦然。这是一种自发的转换，在给定压力的特征温度下发生。因此，潜热的两种形式是融合的潜热和蒸发的潜热。融化或冷冻期间会发生潜在的融合热。在沸腾或凝结期间，蒸发的潜热发生。当将气体转换为液体或液体为固体时，相变为释放热量（放热）。从固体到液体或液体再到气体时，相变的相变会吸收能量/热量（吸热）。 For example, in the vapor state, water molecules are highly energetic. And there are no intermolecular attraction forces. They move around as single water molecules. Compared to this, liquid state water molecules have low energies. However, some water molecules are capable of escaping to the vapor state if they have high kinetic energy. At normal temperature, there will be equilibrium between the vapor state and liquid state water molecules. But, when heating at the boiling point, most of the water molecules will be released to the vapor state. So, when water molecules are evaporating, the hydrogen bonds between the water molecules have to be broken. For this, energy is needed, and this energy is known as the latent heat of vaporization. For water, this phase change occurs at 100°C (boiling point of water). However, when this phase change occurs at this temperature, heat energy is absorbed by water molecules, to break the bonds, but it will not increase the temperature more.

特定的潜在热量是指完全将相位转换为物质单位质量的另一个阶段所需的热能量。

显热

明智的热是在热力学反应过程中传递能量的一种形式，这会导致温度变化。物质的明智热可以通过以下公式计算。

q = mc∆t

Q =明智的热量

M =物质的质量

C =特定的热容量

∆T =由热能引起的温度变化

What is the difference between Latent Heat and Sensible Heat? •潜热不会影响物质的温度，而明智的热量会影响温度并升高或降低。 •在相变时吸收潜热或释放。明智的热是在任何热力学过程中释放或吸收的热量，而不是相变。 •例如，当在25°C至100°C的水中加热水时，提供的能量会导致温度升高。因此，该热量称为明智的热量。但是，当100°C的水蒸发时，不会导致温度升高。此刻吸收的热量称为潜热。