Effective temperature: Difference between revisions
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#<div class="definition"><div class="short_definition">The [[temperature]] at which motionless saturated air would induce, in a sedentary worker wearing ordinary indoor clothing, the same sensation of comfort as that induced by the actual conditions of temperature, [[humidity]], and air movement. Effective temperature is used as a guide in air-conditioning practice, and, on the [[comfort chart]] (American Society of Heating and Air Conditioning Engineers), it appears as a family of curves that serves as one coordinate in defining [[comfort zones]].</div><br/> <div class="paragraph"><br/>''Compare'' [[sensible temperature]], [[cooling temperature]], [[operative temperature]].</div><br/> </div> | #<div class="definition"><div class="short_definition">The [[temperature]] at which motionless saturated air would induce, in a sedentary worker wearing ordinary indoor clothing, the same sensation of comfort as that induced by the actual conditions of temperature, [[humidity]], and air movement. Effective temperature is used as a guide in air-conditioning practice, and, on the [[comfort chart]] (American Society of Heating and Air Conditioning Engineers), it appears as a family of curves that serves as one coordinate in defining [[comfort zones]].</div><br/> <div class="paragraph"><br/>''Compare'' [[sensible temperature]], [[cooling temperature]], [[operative temperature]].</div><br/> </div> | ||
#<div class="definition"><div class="short_definition">In [[phenology]], the [[temperature]] at which plants, especially cereals, begin to grow; generally about 0°C (32°F), for example, winter wheat, to 7°–10°C (45°–50°F), for example, maize.</div><br/> <div class="paragraph"><br/>''See'' [[degree-day]].</div><br/> </div> | #<div class="definition"><div class="short_definition">In [[phenology]], the [[temperature]] at which plants, especially cereals, begin to grow; generally about 0°C (32°F), for example, winter wheat, to 7°–10°C (45°–50°F), for example, maize.</div><br/> <div class="paragraph"><br/>''See'' [[degree-day]].</div><br/> </div> | ||
#<div class="definition"><div class="short_definition">With respect to [[radiation]], the [[blackbody temperature]] that would yield the same amount of radiation as that emitted.</div><br/> <div class="paragraph">The effective temperature of the earth as a whole is about 254 K, corresponding to an average [[emittance]] of 236 W m<sup>-2</sup>.</div><br/> </div> | #<div class="definition"><div class="short_definition">With respect to [[radiation]], the [[temperature|blackbody temperature]] that would yield the same amount of radiation as that emitted.</div><br/> <div class="paragraph">The effective temperature of the earth as a whole is about 254 K, corresponding to an average [[emittance]] of 236 W m<sup>-2</sup>.</div><br/> </div> | ||
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Latest revision as of 15:52, 25 April 2012
effective temperature
- The temperature at which motionless saturated air would induce, in a sedentary worker wearing ordinary indoor clothing, the same sensation of comfort as that induced by the actual conditions of temperature, humidity, and air movement. Effective temperature is used as a guide in air-conditioning practice, and, on the comfort chart (American Society of Heating and Air Conditioning Engineers), it appears as a family of curves that serves as one coordinate in defining comfort zones.
- In phenology, the temperature at which plants, especially cereals, begin to grow; generally about 0°C (32°F), for example, winter wheat, to 7°–10°C (45°–50°F), for example, maize.
See degree-day.
- With respect to radiation, the blackbody temperature that would yield the same amount of radiation as that emitted.
The effective temperature of the earth as a whole is about 254 K, corresponding to an average emittance of 236 W m-2.
