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- Equilibrium_moisture_content abstract "The moisture content of wood below the fibre saturation point is a function of both relative humidity and temperature of surrounding air. The equilibrium moisture content (EMC) is the moisture content at which the wood is neither gaining nor losing moisture; this however, is a dynamic equilibrium and changes with relative humidity and temperature.The moisture content (M) of wood is defined as:where m is the mass of the wood (with moisture) and is the oven-dry mass of wood (i.e. no moisture). If the wood is placed in an environment at a particular temperature and relative humidity, its moisture content will generally begin to change in time, until it is finally in equilibrium with its surroundings, and the moisture content no longer changes in time. This moisture content is the EMC of the wood for that temperature and relative humidity.The Hailwood-Horrobin equation for two hydrates is often used to approximate the relationship between EMC, temperature (T), and relative humidity (h):where Meq is the equilibrium moisture content (percent), T is the temperature (degrees Fahrenheit), h is the relative humidity (fractional) and:This equation does not account for the slight variations with wood species, state of mechanical stress, and/or hysteresis. It is an empirical fit to tabulated data provided in the same reference, and closely agrees with the tabulated data. For example, at T=140 deg F, h=0.55, EMC=8.4% from the above equation, while EMC=8.0% from the tabulated data.".
- Equilibrium_moisture_content thumbnail Hailwood-Horrobin_EMC_graph.svg?width=300.
- Equilibrium_moisture_content wikiPageExternalLink moisture-equilibration.
- Equilibrium_moisture_content wikiPageID "1409530".
- Equilibrium_moisture_content wikiPageRevisionID "601774541".
- Equilibrium_moisture_content hasPhotoCollection Equilibrium_moisture_content.
- Equilibrium_moisture_content subject Category:Timber_seasoning.
- Equilibrium_moisture_content subject Category:Wood.
- Equilibrium_moisture_content comment "The moisture content of wood below the fibre saturation point is a function of both relative humidity and temperature of surrounding air. The equilibrium moisture content (EMC) is the moisture content at which the wood is neither gaining nor losing moisture; this however, is a dynamic equilibrium and changes with relative humidity and temperature.The moisture content (M) of wood is defined as:where m is the mass of the wood (with moisture) and is the oven-dry mass of wood (i.e. no moisture).".
- Equilibrium_moisture_content label "Equilibrium moisture content".
- Equilibrium_moisture_content label "Gleichgewichtsfeuchte".
- Equilibrium_moisture_content sameAs Gleichgewichtsfeuchte.
- Equilibrium_moisture_content sameAs m.04_6tt.
- Equilibrium_moisture_content sameAs Q1449555.
- Equilibrium_moisture_content sameAs Q1449555.
- Equilibrium_moisture_content wasDerivedFrom Equilibrium_moisture_content?oldid=601774541.
- Equilibrium_moisture_content depiction Hailwood-Horrobin_EMC_graph.svg.
- Equilibrium_moisture_content isPrimaryTopicOf Equilibrium_moisture_content.
