Talk:Units for Moisture Measurement
From Saltwiki
I would rather call this article Parameters for Moisture Measurement
Author: Hans-Jürgen Schwarz
back to Moisture Maybe rather Material Moisture Content?
Key parameters
Commonly used parameters are:
- Mass related moisture content
- Volume related moisture content
- Saturation humidity: maximum capillary moisture content /absorption at atmospheric pressure or vacuum (by immersion)
- Equilibrium moisture content: moisture absorption due to hygroscopicity
- Maximum degree of pore filling
- Hygroscopicity related degree of pore filling
Parameter | Equation | Explanation |
Mass related material moisture content u_{m} in [M%] |
Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle u_m=\frac{m_W}{m_T}\cdot 100=\frac{m_F-m_T}{m_T}\cdot 100} | m_{W} = Mass of water sorbed by the sample in [g] m_{F} = Mass of the humid sample in [g] at sample collection m_{T} = Mass of the dry sample in [g] (from the moment of drying up to a constant weight) |
Volume related material moisture content u_{v }in [Vol%] |
Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle u_V=\frac{V_W}{V_T}\cdot 100=u_m \cdot\frac{\rho_T}{\rho_W}} | V_{W} = Volume of the water sorbed by the sample in [cm³] V_{T} = Volume of the dry sample at sample collection in [cm³] u_{m} = Mass related moisture content in [M.%] Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \rho} _{T }= Density of the dry sample in [g/cm³] Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \rho} _{W }= Density of the water in [g/cm³] |
Saturation humidity of a material u_{s} in [M%] |
Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle u_S=\frac{m_F_S-m_T}{m_T}\cdot 100} | m_{FS} = Mass of the moisture saturated sample [g] m_{T} = Mass of the dry sample in [g] |
Hygroscopicity related equilibrium moisture content of a material u_{A} in [M%] |
Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle u_A=\frac{m_F_A-m_T}{m_T}\cdot 100} | m_{FA} = Mass of a sample after hygroscopic moisture absorption m_{T} = Mass of the dry sample in [g] |
Total degree of pore filling PFG_{G }in [M%] | Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle PFG_G=\frac{u_m}{u_S}\cdot 100} | u_{m} = Mass related moisture content in M.% u_{s} = Saturation humidity in [M%] |
Hygroscopicity related degree of pore filling PFG_{H} in [M%] |
Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle PFG_H=\frac{u_A}{u_S}\cdot 100} ] | u_{A} = Hygroscopicity related equilibrium moisture content in M.% u_{s} = Saturation moisture content in [M%] |
--SLeithaeuser 21:59, 27 January 2013 (CET)