水蒸气的定义: 1. Definition of Water Vapor:
- 水蒸气是指以气态形式存在的水分子。
- Water vapor refers to water molecules in gaseous form.
- 水蒸气是无色、无味、无臭的气体。
- Water vapor is a colorless, tasteless, and odorless gas.
2. 水蒸气的产生: 2. Generation of water vapor:
- 在常温下,液态水表面会发生蒸发,产生水蒸气。 - At room temperature, liquid water evaporates on its surface to produce water vapor.
- 水蒸气是通过热量供给而产生的。 - Water vapor is produced by supplying heat.
3. 饱和水蒸气: 3. Saturated water vapor:
- 当空气中水蒸气达到最大含量时,称为饱和水蒸气。 - When the water vapor content in the air reaches the maximum, it is called saturated water vapor.
- 饱和水蒸气压力随温度升高而增大。 - The saturated water vapor pressure increases with increasing temperature.
4. 相对湿度: 4. Relative humidity:
- 相对湿度是指空气中水蒸气压力与饱和水蒸气压力的比值,以百分比表示。 - Relative humidity refers to the ratio of the water vapor pressure in the air to the saturated water vapor pressure, expressed as a percentage.
- 相对湿度反映了空气中水蒸气含量的多少。 - Relative humidity reflects the amount of water vapor in the air.
5. 露点温度: 5. Dew point temperature:
- 露点温度是指空气中水蒸气开始凝结成液态水的温度。 Dew point temperature is the temperature at which water vapor in the air begins to condense into liquid water.
- 当温度降到露点温度时,水蒸气就会凝结成水滴。 - When the temperature drops to the dew point, water vapor condenses into water droplets.
6. 水蒸气在工程中的应用:
6. Application of water vapor in engineering:
- 水蒸气广泛应用于工业生产、发电、供暖等领域。
- Water vapor is widely used in industrial production, power generation, heating and other fields.
- 水蒸气的温度和压力是重要的工艺参数。
- The temperature and pressure of the steam are important process parameters.
水蒸气的基本性质和概念是理解热量传递、相变等热力学过程的基础。掌握这些知识对于工程应用很重要。 The basic properties and concepts of water vapor are the basis for understanding thermodynamic processes such as heat transfer and phase change. Mastering this knowledge is important for engineering applications.
