Air Humidity Measurement: Difference between revisions
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== Introduction == | == Introduction == | ||
Air is a mixture of gases. The main | Air is a mixture of gases. The main ones are summarized in Table 1. In addition to these, air always contains a small amount of water, which exists in three states of matter: | ||
*solid: ice, hail, snow | *solid: ice, hail, snow | ||
*liquid: rain, fog, dew | *liquid: rain, fog, dew | ||
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|+''Table 1: Composition of | |+''Table 1: Composition of air'' | ||
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Water is the only gas in the atmosphere that is present in its three states | Water is the only gas in the atmosphere that is present in its three states, gas, liquid and solid. For the building trade, this leads to some undesirable phenomena such as condensation, corrosion and frost. | ||
Both temperature and humidity are the main parameters needed to describe ambient conditions and both influence our well-being significantly. | |||
[[category:Climate Measurement]][[category:Humidity Measurement]][[category:Schwarz,Hans-Jürgen]][[category:R-SLaue]][[category:inProgress]] | [[category:Climate Measurement]][[category:Humidity Measurement]][[category:Schwarz,Hans-Jürgen]][[category:R-SLaue]][[category:inProgress]] | ||
Revision as of 19:22, 5 January 2013
Author: Hans-Jürgen Schwarz
English Translation by Sandra Leithäuser
back to Climatic measurements
Measuring humidity overview
- Physical Principles
- Dalton´s Law
- Water Vapor Partial Pressure in the air
- Measured Variables
- Moisture measurement methods
- Comparison of the Measuring Method
- Measuring Humidity in Practice
Introduction
Air is a mixture of gases. The main ones are summarized in Table 1. In addition to these, air always contains a small amount of water, which exists in three states of matter:
- solid: ice, hail, snow
- liquid: rain, fog, dew
- gas: water vapor
| Gas | Symbol | Content in Vol. % |
| Nitrogen Oxigen Argon |
N2 O2 Ar |
78 21 0,8 |
| Krypton Xenon Neon Helium Hydrogen Carbon dioxide Methane Ozone |
Kr Xe Ne He H2 CO2 CH4 O3 |
Trace gases |
Water is the only gas in the atmosphere that is present in its three states, gas, liquid and solid. For the building trade, this leads to some undesirable phenomena such as condensation, corrosion and frost. Both temperature and humidity are the main parameters needed to describe ambient conditions and both influence our well-being significantly.