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Use of Temperature, RH
and EMC When Managing
Drying Operations
Cooperation and Teamwork
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Every Leader Is A Boss,
But Not Every Boss Is A Leader
The boss drives his men.
The leader coaches them.
The boss depends on authority.
The leader, goodwill.
The boss says “I.”
The leader says “we.”
The boss says “Be there on time.”
The leader gets there ahead of time.
The boss fixes the blame for the breakdown on you.
The leader fixes the breakdown.
The boss knows how it is done.
The leader shows how.
The boss says “go,”
The leader says “Let’s go.”
The boss uses people.
The leader develops them.
The boss sees today.
The leader looks at tomorrow.
The boss commands.
The leader asks.
The boss never has enough time.
The leader makes time.
The boss is concerned with things.
The leader is concerned with people.
The boss lets his people know where he stands.
The leader lets his people know where to stand.
d
The boss works hard to produce.
The leader works hard to help his people produce.
The boss takes the credit.
The leader gives it.
‐unknown
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Definitions
Moisture Content
Weather professionals define air's moisture content using three specific forms of determination: dew point, relative humidity, and absolute humidity. While each of these values concern moisture content and to some degree have correlations to each other, each of these measurements involves a somewhat different aspect of air's moisture content.
Dew Point
Correctly stated as dew point temperature, the dew point provides an indicator of how much Correctly stated as dew point
temperature the dew point provides an indicator of how much
moisture the air holds. Colder air holds less water vapor than hotter air can, and a location's altitude also has an impact on dew point temperature. Higher altitudes have lower air pressure, which has an impact on how much moisture the air can hold at the same temperature as lower altitudes. For example, at 70 degrees Fahrenheit, the air in Boston can hold more moisture than the air in Denver, Colorado could at the same 70 degree temperature. Dew point temperature is that temperature at which the air in a given locale becomes moisture‐saturated, and must condense back into some liquid form such as dew, fog or even rain showers.
Relative Humidity
Relative humidity also represents the amount of moisture in the air in a ratio to the moisture level at which air would become moisture‐saturated. At 100% relative humidity, the relative humidity corresponds with the dew point temperature. Relative humidity is a measurement of how humid conditions are, whereas dew point temperature is an indicator of the amount of water vapor present in the air.
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EMC by U.S. location
The moisture content of wood should be matched as closely as is practical to the equilibrium moisture
content (EMC) conditions in service. The table below shows the EMC conditions in outdoor exposure in various U.S. cities for each month.
Equilibrium moisture content of wood, exposed to outdoor atmosphere, in U.S. locations
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Defects
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Yard Set‐up
Wind Direction
Species and Thickness in Yard
Utilize Natural Air Flow to Your Advantage
Protect Slower Drying Product With Faster Drying Product
• Use Same Tools in The Yard That Are Used in The Kiln (Hygrometer, Air Flow Meter, etc)
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•
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RH Meter
From The Bottom Up
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Pile Covers
Blow Box
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Burlap/Wax
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Shade Dri
Buildings
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Fans
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Housekeeping
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KILNS FAN SPEED - COST PER HOUR
Fan Speed
$9
$8.26
$8
$7.64
$7.22
$7
$6 91
$6.91
$6.40
$6.58
$6.27
$6
$5.96
$5.67
$5.37
$ PER HOUR
$5
$4.90
$5.11
$4.84
$4.59
$4.34
$4.12
$4
$3.76
$3.90
$3.68
Reverse
$3.49
$3.29
$3.12
$2.87
$3
$2.97
$2.80
$2 65
$2.65
$2.53
$2.21
$2.38
$2.27
$2.15
$2.05
$2
$1.95
$1.69
$1.80$1.88
$1.63$1.71
Forward
$1
$0
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